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EDITORIAL
An introduction to peer review
p. 437
Lakshmi Narayana Yaddanapudi, Sandhya YaddanapudiDOI :10.4103/0970-9185.169047 PMID :26702196
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REVIEW ARTICLES
Small is the new big: An overview of newer supraglottic airways for children
p. 440
Rakhee GoyalDOI :10.4103/0970-9185.169048 PMID :26702197Almost all supraglottic airways (SGAs) are now available in pediatric sizes. The availability of these smaller sizes, especially in the last five years has brought a marked change in the whole approach to airway management in children. SGAs are now used for laparoscopic surgeries, head and neck surgeries, remote anesthesia; and for ventilation during resuscitation. A large number of reports have described the use of SGAs in difficult airway situations, either as a primary or a rescue airway. Despite this expanded usage, there remains little evidence to support its usage in prolonged surgeries and in the intensive care unit. This article presents an overview of the current options available, suitability of one over the other and reviews the published data relating to each device. In this review, the author also addresses some of the general concerns regarding the use of SGAs and explores newer roles of their use in children.
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Topical anesthesia
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Mritunjay Kumar, Rajiv Chawla, Manish GoyalDOI :10.4103/0970-9185.169049 PMID :26702198Topical anesthetics are being widely used in numerous medical and surgical sub-specialties such as anesthesia, ophthalmology, otorhinolaryngology, dentistry, urology, and aesthetic surgery. They cause superficial loss of pain sensation after direct application. Their delivery and effectiveness can be enhanced by using free bases; by increasing the drug concentration, lowering the melting point; by using physical and chemical permeation enhancers and lipid delivery vesicles. Various topical anesthetic agents available for use are eutectic mixture of local anesthetics, ELA-max, lidocaine, epinephrine, tetracaine, bupivanor, 4% tetracaine, benzocaine, proparacaine, Betacaine-LA, topicaine, lidoderm, S-caine patch™ and local anesthetic peel. While using them, careful attention must be paid to their pharmacology, area and duration of application, age and weight of the patients and possible side-effects.
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COMMENTARY
Ropivacaine: Is it a good choice for spinal anesthesia?
p. 457
Medha MohtaDOI :10.4103/0970-9185.169050 PMID :26702199
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Endotracheal tube leak: What should we do?
p. 459
Nishkarsh GuptaDOI :10.4103/0970-9185.169051 PMID :26702200
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ORIGINAL ARTICLES
Systematic review of use of β-blockers in sepsis
p. 460
Cyril Jacob Chacko, Shameer GopalDOI :10.4103/0970-9185.169063 PMID :26702201Background and Aims: We proposed a review of present literature and systematic analysis of present literature to summarize the evidence on the use of β-blockers on the outcome of a patient with severe sepsis and septic shock.
Material and Methods: Medline, EMBASE, Cochrane Library were searched from 1946 to December 2013. The bibliography of all relevant articles was hand searched. Full-text search of the grey literature was done through the medical institution database. The database search identified a total of 1241 possible studies. The citation list was hand searched by both the authors. A total of 9 studies were identified.
Results: Most studies found a benefit from β-blocker administration in sepsis. This included improved heart rate (HR) control, decreased mortality and improvement in acid-base parameters. Chronic β-blocker usage in sepsis was also associated with improved mortality. The administration of β-blockers during sepsis was associated with better control of HR. The methodological quality of all the included studies, however, was poor.
Conclusion: There is insufficient evidence to justify the routine use of β-blockers in sepsis. A large adequately powered multi-centered randomized controlled clinical trial is required to address the question on the efficacy of β-blocker usage in sepsis. This trial should also consider a number of important questions including the choice of β-blocker used, optimal dosing, timing of intervention, duration of intervention and discontinuation of the drug. Until such time based on the available evidence, there is no place for the use of β-blockers in sepsis in current clinical practice.
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Hyperbaric spinal ropivacaine in lower limb and hip surgery: A comparison with hyperbaric bupivacaine
p. 466
Feroz Ahmad Dar, Mohsin Bin Mushtaq, Umar Mushtaq KhanDOI :10.4103/0970-9185.169064 PMID :26702202Background and Aims: Bupivacaine is more cardiotoxic than ropivacaine. Ropivacaine provides effective spinal anesthesia for lower limb and hip surgeries. This prospective study was designed to compare the efficacy and safety of intrathecal hyperbaric ropivacaine with hyperbaric bupivacaine for patients undergoing limb and hip surgeries.
Material and Methods: Two hundred patients aged 40-75 years, with American Society of Anesthesiologists I and II of either gender were randomly divided into Group R (Ropivacaine) and Group B (Bupivacaine) to receive an intrathecal injection of 3 ml of hyperbaric ropivacaine 0.5% or 3 ml of hyperbaric bupivacaine 0.5%, respectively. Onset and duration of sensory blockade were determined using the pinprick method by a three-point scale at T-10 dermatome. Onset and duration of motor block were assessed by modified Bromage scale. Duration of postoperative analgesia, hemodynamic changes, central nervous system and cardiovascular system toxicity or any adverse effects were observed.
Results: The mean onset of sensory block (6 ± 1.3 min vs. 3 ± 1.1 min; P < 0.001) and motor block (13 ± 1.6 min vs. 9 ± 1.3 min; P < 0.05) was significantly slower in ropivacaine group as compared to bupivacaine group. The total duration of sensory block was significantly shorter in the ropivacaine group (160 ± 12.9 min) than in the bupivacaine group (260 ± 16.1 min; P < 0.05). The mean duration of motor block was also shorter in the ropivacaine group compared to bupivacaine group (126 ± 9.2 min vs. 174 ± 12.6 min; P < 0.05). Quality of anesthesia was comparable in two groups (P = 0.04).
Conclusion: We conclude that hyperbaric bupivacaine used intrathecally has a faster onset of sensory block and prolonged duration of analgesia compared to hyperbaric ropivacaine.
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Ropivacaine 0.025% mixed with fentanyl 3.0 μg/ml and epinephrine 0.5 μg/ml is effective for epidural patient-controlled analgesia after cesarean section
p. 471
Shaul Cohen, Renu Chhokra, Mark H Stein, John T Denny, Shruti Shah, Adil Mohiuddin, Rotem Naftalovich, Rong Zhao, Anna Pashkova, Noah Rolleri, Arpan G Patel, Christine W Hunter-FratzolaDOI :10.4103/0970-9185.169065 PMID :26702203Background and Aims: We aimed to determine the ropivacaine concentration that provided adequate analgesia with early ambulation and minimal urinary retention or other side-effects when used with fentanyl and epinephrine for patient-controlled epidural analgesia (PCEA) after elective cesarean section.
Material and Methods: Forty-eight patients were randomized to four groups in a double-blinded fashion. All groups received an initial 10 ml/h of epidural study solution for 24 h. The solution contained: 0.2, 0.1, 0.05, or 0.025% ropivacaine for Groups I-IV, respectively, with fentanyl 3.0 μg/ml and epinephrine 0.5 μg/ml. Patients could administer additional PCEA doses of 4 ml of their study solution with a lock-out time of 10 min. Overall satisfaction, side-effects, motor block, neurologic function, and pain using Visual Analog Scale were assessed.
Results: Patients in all groups showed no difference in sedation, pruritus, nausea, vomiting, and uterine cramps. Pain scores at rest were lower for Group IV than Groups I-III (P < 0.001). Twelve, five, one, and zero patients could not ambulate in Groups I-IV, respectively. Nine, nine, two, and zero (III <I and II, P = 0.02; IV P = 0.001) patients reported urinary retention in Groups I-IV, respectively. Overall satisfaction scores were high for all groups. Neonatal behavior score was similar and high in all groups.
Conclusion: 0.025% ropivacaine PCEA combined with fentanyl and epinephrine provided effective pain relief after cesarean section with early ambulation and without sensory loss, urinary retention, or increase of side-effects.
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Continuous spinal analgesia with levobupivacaine for postoperative pain management: Comparison of 0.125% versus 0.0625% in elective total knee and hip replacement: A double-blind randomized study
p. 478
Alessandro D'Ambrosio, Savino Spadaro, Chiara Natale, Antonella Cotoia, Michele Dambrosio, Gilda CinnellaDOI :10.4103/0970-9185.169066 PMID :26702204Background and Aims: Continuous spinal anesthesia (CSA) has not been widely used for postoperative analgesia, mainly to avoid complications from the subarachnoid injection. Recently, the introduction of low caliber CSA catheters (Spinocath ® ), has allowed to decrease anesthetics doses and volumes with good analgesia and reduced complications. The aim of this present study was to compare two concentrations of levobupivacaine administered through CSA for postoperative pain management after major orthopedic surgery. Secondary outcomes were adverse events associated with CSA.
Material and Methods: Thirty-two patients were randomized to receive sufentanil 1 mcg/h plus levobupivacaine 0.125%-1 ml/h (Group A 0.125 ) or 0.0625%-2 ml/h (Group B 0.0625 ) for postoperative analgesia through CSA catheter, connected to the elastomeric pump over 48 h. The quality of analgesia was assessed based on pain intensity by Visual Analogic Scale (VAS). Sensory and motor function, hemodynamic, and respiratory parameters were recorded for 96 h after surgery, after which the catheter was removed. In addition, joint mobility was assessed, and any side effects were noted.
Results: VAS score was ≤30 mm in 25 patients. Three patients in Group A 0.125 and 4 in Group B 0.0625 (NS), received a rescue dose of levobupivacaine. Median VAS in Group A 0.125 was lower than in Group B 0.0625 on T 1 h (8 ± 11 vs 16 ± 11; P < 0.05), and on T 4 h (11 ± 8 vs 18 ± 1; P < 0.05). All patients remained hemodynamically stable. There were no significant differences between groups for postoperative joints mobility.
Conclusion: Levobupivacaine at a dose of 1.25 mg/h administered by CSA provides good quality analgesia independent of concentration and solution volume in patients undergoing total knee and hip replacement.
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Effect of clonidine and/or fentanyl in combination with intrathecal bupivacaine for lower limb surgery
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Ravanjit Singh, Sandeep Kundra, Shikha Gupta, Anju Grewal, Anurag TewariDOI :10.4103/0970-9185.169069 PMID :26702205Background and Aims: Various adjuncts to local anesthetics have been used with the purpose of improving the quality of subarachnoid block. This randomized double-blind study was conducted to evaluate the efficacy of adding clonidine to bupivacaine and bupivacaine-fentanyl combination.
Material and Methods: A total of 100 patients scheduled for surgery under spinal anesthesia were randomly allocated into four groups (n = 25 each) to receive intrathecal bupivacaine 7.5 mg plus normal saline 0.5 ml (group BS), intrathecal bupivacaine 7.5 mg, and fentanyl 25 μg (group BF), intrathecal bupivacaine 7.5 mg and clonidine 75 μg (group BC), intrathecal bupivacaine 7.5 mg, clonidine 37.5 μg, and fentanyl 12.5 μg (group BCF). The time of onset and duration of sensory block, highest dermatome level of sensory block, time of onset of motor block, time to complete motor block recovery and duration of spinal anesthesia, intraoperative and postoperative hemodynamics and side effects if any were recorded. VAS, total number of patients who were administered supplemental analgesic in each group and the total amount of supplemental analgesic administered in the next 24 h was quantified and documented in all the groups.
Results: The time of onset of sensory block (min) in groups BS, BC, BCF, and BF was 10.80 ± 2.26, 10.20 ± 1.00, 10.00 ± 0.00, and 13.80 ± 2.61 respectively, thus onset of sensory block was significantly earlier in groups BC and BCF. Similarly, onset of motor block was also quicker in groups BC and BCF. Time of requirement of supplemental analgesia was 135.20 ± 12.70 min, 199.2 ± 21.92 min, 209.80 ± 26.32 min, and 208.00 ± 26.58 min in groups BS, BF, BC, and BCF respectively. Intraoperative and postoperative changes in heart rate, mean arterial blood pressure, oxygen saturation, and respiratory rate were comparable. Sedation scores were significantly higher in group BC. Pruritus was only observed in groups BF and BCF. Mean nausea vomiting scores were comparable in all groups.
Conclusion: We conclude that the addition of clonidine in doses of 75 μg and 37.5 μg to low-dose bupivacaine and bupivacaine-fentanyl prolongs the sensory and motor block while increasing the duration of postoperative analgesia without significant side-effects.
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Comparison of different routes of administration of clonidine for analgesia following anterior cruciate ligament repair
p. 491
Neeru Sahni, Nidhi B Panda, Kajal Jain, Yatinder Kumar Batra, Mandeep Singh Dhillon, Pushpa JagannathDOI :10.4103/0970-9185.169070 PMID :26702206Background and Aims: A high percentage of patients undergoing arthroscopic repairs on day care basis complain of inadequate postoperative pain relief. Clonidine was evaluated for the best route as an adjuvant in regional anesthesia in anterior cruciate ligament (ACL) repair to prolong analgesia.
Material and Methods: A prospective randomized double-blinded study was planned in a tertiary care hospital in North India in which 85 American Society of Anesthesiologists I and II patients undergoing ACL repair were enrolled. All groups received 0.5% hyperbaric bupivacaine intrathecally as in control group C. Group IT received intrathecal 1 μg/kg of clonidine along with hyperbaric bupivacaine, group IA received 0.25% bupivacaine and 1 μg/kg clonidine intra-articularly, and group NB received 0.25% bupivacaine and 1 μg/kg clonidine in femoro-sciatic nerve block (FSNB). Postoperative pain free interval and block characteristics were the primary outcomes studied.
Results: Pain-free duration was 546.90 (±93.66) min in group NB (P < 0.001) in comparison to 234.90 (±20.99), 367.80 (±47.40) and 172.20 (±54.82) min in groups IA, IT and C, respectively. Sensory block and motor blockade in NB were 474.90 (±43.80) and 267.40 (±34.59) min, respectively, and were significantly prolonged (P > 0.001) in comparison to other groups. The mean rescue analgesic requirement and cumulative frequency of rescue analgesia were least in group NB, followed by groups IT, IA and C.
Conclusion: Clonidine is safe and effective adjuvant with bupivacaine in prolonging analgesia through various routes employed for post knee surgery pain. The maximum prolongation of analgesia is achieved through FSNB with a risk of prolonging postanesthesia care unit stay.
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Effect of buprenorphine as an adjunct with plain local anesthetic solution in supraclavicular brachial plexus block on quality and duration of postoperative analgesia
p. 496
Surekha Patil, Debasis Debata, Chaula Doshi, Varsha Vyas, Sapna SinhaDOI :10.4103/0970-9185.169072 PMID :26702207Background and Aims: Supraclavicular brachial plexus block is ideal for upper limb surgical procedures. Buprenorphine, an agonist antagonist opioid has been used as an adjunct to prolong analgesia. We aimed to evaluate the quality and duration of postoperative analgesia by addition of buprenorphine to local anesthetic solution.
Material and Methods: A prospective, randomized, double-blind control study was conducted on 50 healthy patients of ASA Grade I/II of age group 20-70 years scheduled for orthopedic and reconstructive surgery of upper limb under supraclavicular brachial plexus block. Patients were allocated into two groups, 25 in each group viz.: Group B (buprenorphine group) received 20 ml 0.5% bupivacaine + 15 ml 2% lignocaine with adrenaline (1:200,000) + 4 ml normal saline + 1500 units hyaluronidase + 3 μg/kg buprenorphine diluted to 1 ml normal saline. Group C (control group) received 20 ml 0.5% bupivacaine + 15 ml 2% lignocaine with adrenaline (1:200,000) + 4 ml normal saline + 1500 units hyaluronidase + 1 ml normal saline. The parameters observed were onset and duration of sensory and motor block, quality and duration of analgesia and side-effects.
Results: The mean duration of postoperative analgesia was significantly longer in Group B (16.04 ± 3.19 h) than in Group C (6.20 ± 0.74 h). There was no difference between two groups on mean onset of sensory block. The mean duration motor block was significantly longer in Group B (4.93 ± 0.94 h) than in Group C (2.25 ± 0.62 h) [P < 0.05]. The mean duration of sensory block was also significantly longer in Group B (5.71 ± 0.94 h) than in Group C (4.94 ± 0.70 h) with P < 0.05.
Conclusion: Addition of 3 μg/kg buprenorphine to 0.5% bupivacaine for supraclavicular brachial plexus block prolonged duration of postoperative analgesia and sensory blockade without an increase in side effects.
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Incident reporting by acute pain service at a tertiary care university hospital
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Aliya Ahmed, Muhammad YasirDOI :10.4103/0970-9185.169074 PMID :26702208Background and Aims: Provision of effective and safe postoperative pain management is the principal responsibility of acute pain services (APSs). Continuous quality assurance is essential for high-quality patient care. We initiated anonymous reporting of critical incidents by APS to ensure continuous quality improvement and here present prospectively collected data on the reported incidents. Our objective was to analyze the frequency and nature of incidents and to see if any harm was caused to patients.
Material and Methods: Data were collected from January 1, 2012 to September 30, 2013. An incident related to pain management was defined as "An incident that occurs in a patient receiving pain management supervised by APS, and causes or has the potential to cause harm or affects patient safety." A form was filled including incident type, personnel involved, any harm caused, and steps taken to rectify it. Frequencies and percentages were computed for categorical variables.
Results: A total of 2042 patients were seen and 442 (21.64%) incidents reported during the study period, including documentation errors (136/31%), noncompliance with protocols (113/25.56%), wrong combination of drugs (56/12.66%), premature discontinuation (74/16.72%), prolonged delays in change of syringes (27/6.10%), loss to follow-up (19/4.29%), administration of contraindicated drugs (9/2.03%), catheter pull-outs (6/1.35%), and faulty equipment (2/0.45%). Steps were taken to rectify the errors accordingly. No harm was caused to any patient.
Conclusion: Reporting of untoward incidents and their regular analysis by APS is recommended to ensure high-quality patient care and to provide guidance in making teaching strategies and guidelines to improve patient safety.
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Different mechanical properties in Seldinger guide wires
p. 505
Wolfram SchummerDOI :10.4103/0970-9185.169076 PMID :26702209Background and Aims: Most central venous catheters are placed using Seldinger guide wires. EN ISO 11070 is the guideline for testing guide wire flexing performance and tensile strength, and we can safely assume that guide wires in use meet these requirements. Unfortunately, EN ISO 11070 guidelines do not reflect the clinical requirements and we continue to see mechanical failures and their associated complications.
Material and Methods: This in vitro study was performed in an accredited laboratory. With regard to flexing, we: (1) Established the minimum flexing performance needed to meet clinical requirements, (2) developed flexing performance tests which mimic clinical requirement, and (3) evaluated the mechanical properties of various guide wires relative to these requirements. With regard to tensile strength, we used the testing method prescribed in ISO 11070, but did not end the test at 5 Newton (N). We continued until the guide wire was damaged, or we reached maximum tractive force. We then did a wire-to-wire comparison. We examined two basic wire constructions, monofil and core and coil.
Results: Tensile strength: All wires tested, except one, met EN ISO 11070 requirements for 5 N tensile strength. The mean of the wire types tested ranged from 15.06 N to 257.76 N. Flexing performance: None of the wires kinked. The monofil had no evidence of bending. Two core/coil wires displayed minor bending (angle 1.5°). All other wires displayed bending angles between 22.5° and 43.0°.
Conclusion: We recommend that: (1) Clinicians use guide wires with high-end mechanical properties, (2) EN ISO 11070 incorporate our flexing test into their testing method, raise the flexing requirement to kink-proof, (3) and raise the tensile strength requirement to a minimum of 30 N, and (3) all manufacturers and suppliers be required to display mechanical properties of all guide wire, and guide wire kits sold.
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Pretreatment with nitrous oxide enhances induction of anesthesia with sevoflurane: A randomized controlled trial
p. 511
Argyro Fassoulaki, Chryssoula StaikouDOI :10.4103/0970-9185.169079 PMID :26702210Background and Aims: Inhalation anesthesia with sevoflurane may be enhanced by several drugs or techniques. The aim of the present study was to investigate the effect of nitrous oxide (N 2 O) pretreatment on the speed of anesthesia induction with sevoflurane.
Material and Methods: Eighty patients scheduled for hysteroscopy under general anesthesia were randomly assigned to inhale for 10 min before induction 50% N 2 O in oxygen or air via a facemask. Anesthesia was induced with 7-8% sevoflurane in oxygen via a facemask. Bispectral index (BIS), end-tidal carbon dioxide (EtCO 2 ) tidal volume, respiratory rate, oxygen saturation (SpO 2 ), and heart rate were recorded every minute during the 10 min pretreatment periods and every 30 s during the first 300 s of induction with sevoflurane. During induction of anesthesia inspired and end-tidal sevoflurane concentrations were also recorded.
Results: During the 10 min of inspired 50% N 2 O or air BIS, EtCO 2 , tidal volume, respiratory rate and heart rate values did not differ between the two groups except for the SpO 2 , which was higher in the N 2 O group (P < 0.001). During induction of anesthesia the N 2 O group exhibited lower BIS values (P = 0.001), being significant at 60-150 s (P < 0.001, P < 0.001, P = 0.002, P = 0.014) as well as at 270 s (P = 0.004). EtCO 2 and tidal volume were consistently lower in the N 2 O group (P = 0.001, P = 0.041 respectively) and respiratory rate was higher (P = 0.007).
Conclusion: Our results show that pretreatment of the patients with 50% N 2 O for 10 min enhances the speed of induction with sevoflurane as assessed by the BIS monitoring.
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Comparison of ventilatory efficacy and airway dynamics between ProSeal laryngeal mask airway and endotracheal tube in adult patients during general anesthesia
p. 517
Sudheesh Kannan, SS Harsoor, L Sowmiya, SS Nethra, D DevikaRani, M SatheshaDOI :10.4103/0970-9185.169081 PMID :26702211Background and Aims: Studies have demonstrated minimal hemodynamic variation and postoperative complications with ProSeal laryngeal mask airway (PLMA) compared to endotracheal tube (ETT). Hence, a study was conducted to compare the ventilatory parameters and airway dynamics required to maintain normocarbia and stable hemodynamics with PLMA and ETT.
Material and Methods: A prospective, randomized, single blinded study was conducted on 60 patients aged 20-40 years of American society of anesthesiologists class I and II, divided into Group PLMA and Group ETT. Standard anesthesia protocol was instituted. Group PLMA received PLMA sizes as per manufacturer's recommendations and group ETT received appropriate sized cuffed ETT. Patients were initially ventilated at 14 bpm, I:E ratio 1:2, tidal volume (Vt) 6 ml/kg and later adjusted to maintain end tidal carbon dioxide (EtCO 2 ) between 35 and 40 mmHg. Peak airway pressure (Ppeak), compliance (Compl.), Vt, airway resistance (R aw ), hemodynamic parameters, oxygen saturation (SpO 2 ) and EtCO 2 were recorded throughout surgery. Postoperative complications if any, were noted.
Results: Demographic parameters, R aw , EtCO 2 , SpO 2 were comparable between groups. Ppeak was lower and Vt needed to maintain EtCO 2 of 35-40 mmHg was lesser in Group PLMA. Compl was low for 5 min after insertion of PLMA. Heart rate was significantly reduced at 1 min post insertion; blood pressures were significantly lower upto 2 min after insertion and post removal in group PLMA. Incidence of cough was significantly lower in group PLMA.
Conclusion: ProSeal laryngeal mask airway maintains adequate ventilation at lower Vts and minimal peak pressures, has lesser hemodynamic variations and lower incidence of postoperative cough compared to ETT.
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Can low dose of propofol effectively suppress fentanyl-induced cough during induction of anaesthesia? A double blind randomized controlled trial
p. 522
Abolfazl Firouzian, Seyed Abdollah Emadi, Afshin Gholipour Baradari, Robabeh Mousavi, Alieh Zamani KiasariDOI :10.4103/0970-9185.169082 PMID :26702212Background and Aims: Fentanyl-induced cough (FIC) is often seen after intravenous (IV) administration of fentanyl during the induction of general anesthesia.The aim of this study was to evaluate the effectiveness of low dose of propofol in suppressing of FIC during induction of anesthesia.
Material and Methods: In a prospective double-blind randomized controlled trial, a total of 240 patients, American Society of Anesthesiologists physical status Class I and II, scheduled for elective surgery were randomly assigned into two equally sized groups (n = 120). Patients in Group A received low dose of propofol (10 mg) and patients in Group B received the same volume of normal saline (control group). Two minutes later, all patients were given fentanyl (2 μg/kg) over 2 s through the peripheral IV line in the forearm. The vital sign profiles and frequency and intensity of cough were recorded within 2 min after fentanyl bolus by a nurse blinded to study design. Data were analyzed using independent t -test, paired t -test and Chi-square test.
Results: The incidences of FIC were 9.2% and 40.8% in Group A (propofol) and Group B (placebo) respectively (P = 0.04). Furthermore, there was a significant difference in the intensity of cough between Groups A and B (P < 0.0001). The hemodynamic value (systolic blood pressure, diastolic blood pressure, heart rate, mean arterial pressure and saturation of oxygen) were similar, and there was no significant difference between two groups in the baseline value or after propofol or placebo injection.
Conclusions: Administration low dose of propofol (10 mg) may effectively reduce the FIC frequency and intensity during induction of anesthesia without hemodynamic disturbances.
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Prevention of hypotension associated with the induction dose of propofol: A randomized controlled trial comparing equipotent doses of phenylephrine and ephedrine
p. 526
Muhammad Farhan, Muhammad Qamarul Hoda, Hameed UllahDOI :10.4103/0970-9185.169083 PMID :26702213Background and Aims: Propofol, the most commonly used intravenous (IV) anesthetic agent is associated with hypotension on induction of anesthesia. Different methods have been used to prevent hypotension but with variable results. The objective of this study was to evaluate efficacy of equipotent doses of phenylpehrine and ephedrine in preventing the hypotensive response to the induction dose of propofol.
Material and Methods: One hundred thirty five adult patients were randomised to one of the study groups: "propofol-saline (PS)," "propofol-phenylephrine (PP)" or "propofol-ephedrine (PE)" by adding study drugs to propofol. Anesthesia was induced with a mixture of propofol and the study drug. Patients were manually mask-ventilated for 5 min using 40% oxygen in nitrous oxide and isoflurane at 1%. A baseline mean arterial pressure (MAP) was recorded prior to induction of anesthesia. Systolic, diastolic and mean blood pressure and heart rate were recorded every minute for up to 5 min after induction. Hypotension was defined as a 20% decrease from the baseline MAP.
Results: There were no significant demographic differences between the groups. Overall incidence of hypotension in this study was 38.5% (52/135). Rate of hypotension was significantly higher in group PS than group PP (60% vs. 24.4% P = 0.001) and group PE (60% vs. 31.1% P = 0.005). In contrast, a significant difference in rate of hypotension was not observed between groups PP and group PE.
Conclusion: In equipotent doses, phenylephrine is as good as ephedrine in preventing the hypotensive response to an induction dose of propofol.
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The analgesic efficacy of continuous transversus abdominis plane block in renal transplant recipients
p. 531
Beena Kandarp Parikh, V Waghmare, Veena R Shah, P Modi, S Rizvi, S Khemchandani, B Butala, G ParikhDOI :10.4103/0970-9185.169084 PMID :26702214Background and Aims: Transversus abdominis plane (TAP) block is suitable for operations where parietal pain is a major cause of pain. Renal transplant recipients are ideally suited to gain maximum benefit from TAP block as the incision classically involves the lower abdomen. This study was conducted to evaluate the analgesic efficacy of continuous TAP block in transplant recipients.
Material and Methods: In a prospective double-blind study, 40 chronic renal failure patients undergoing open renal transplant were randomly divided into two groups. At the end of surgery during closure, a multiorifice epidural catheter was placed in TAP plane. Study group (Group S) received Inj bupivacaine bolus 1 mg/kg (0.25%) followed by infusion 0.25 mg/kg (0.125%) through the catheter, whereas control group (Group C) received normal saline through the catheter. Inj pentazocine (0.3 mg/kg) was given as rescue analgesic at visual analogue score (VAS) > 3 in any group at rest or on movement. The analgesic efficacy was judged by VAS, time of first rescue analgesic, and total analgesic consumption in 24 h.
Results: Patients in Group S had significant lower VAS scores, longer time to first rescue analgesic (270 ± 347.96 vs. 42.85 ± 32.27 min) and lower pentazocine consumption (9.75 ± 13.95 vs. 56.42 ± 12.46 mg) in 24 h. There was significant sedation in Group C.
Conclusion: The TAP catheter technique for postoperative pain control after renal transplant has proved to be effective in relieving the postoperative pain after renal transplant with less pentazocine requirement and less sedation.
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Incidence of cesarean section and analysis of risk factors for failed conversion of labor epidural to surgical anesthesia: A prospective, observational study in a tertiary care center
p. 535
Samina Ismail, Shakaib Chugtai, Alia HussainDOI :10.4103/0970-9185.169085 PMID :26702215Background and Aims: This study aimed to analyze the effect of labor epidural (LE) on the incidence of cesarean section (CS) and assess the risk factors involved in failed conversion of LE to surgical anesthesia for CS.
Material and Methods: A prospective observational study of 18 months from January 2012 to June 2013 was conducted on all patients who had delivered in the labor room suit of our hospital. The data collected for all 4694 patients included their demographics, parity and mode of delivery. In addition a predesigned proforma, with additional information was used for 629 parturient with LE.
Results: During the study period, total numbers of deliveries performed in our hospital were 4694, with an epidural rate of 13.4% (629/4694). No significant difference (P = 0.06) was observed in the rate of CS among women with or without LE (28 % [n = 176/629] vs. 31.7 % [n = 1289/4065]), however, a statistically significant difference (P < 0.01) was observed in the rate of assisted delivery in patients receiving LE as compared to those delivering without it (8.7% [n = 55/629] vs. n = 3.7% [154/4065]).
For 176 patients requiring CS, LE utilization for surgical anesthesia was 52.8% (93/176) and factors identified for not utilizing LE in 47% (83/176) were; failure to achieve surgical anesthesia in 6.8% (12/176), emergency CS in 28.4% (50/176), patient preference in 6.8% (12/176) and inadequate labor pain relief with LE in 5.1% (9/176) patients. Non-obstetric anesthesiologists were involved in 59% (49/83) of cases where LE was not used for CS.
Conclusion: LE had no effect on the rate of CS; however it significantly increased (P < 0.01) the rate of assisted delivery. Factors like inadequate LE, emergency situations and non-obstetric anesthesiologists can all be responsible for failed conversion of LE to surgical anesthesia for CS.
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Comparison between intrathecal isobaric ropivacaine-fentanyl and bupivacaine-fentanyl in elective infraumbilical orthopedic surgery: A randomized controlled study
p. 542
Amitava Layek, Souvik Maitra, Nitish K Gozi, Sulagna Bhattacharjee, Sugata Pal, Suvadeep Sen, Avijit HazraDOI :10.4103/0970-9185.169086 PMID :26702216Background and Aims: We aimed to evaluate and compare the block characteristics and duration of analgesia of intrathecal isobaric ropivacaine-fentanyl and bupivacaine-fentanyl combination in adult patients undergoing lower limb orthopedic surgery.
Material and Methods: Seventy-four American Society of Anesthesiologists' I and II adult patients undergoing lower limb orthopedic surgery under subarachnoid block were randomized to receive either 3 ml 0.5% isobaric ropivacaine and 25 mcg fentanyl (Group R) or 3 ml 0.5% isobaric bupivacaine and 25 mcg fentanyl (Group B). The hemodynamic profiles, maximum upper level of sensory block height, time to reach peak block height, two dermatome regression time, and duration of motor block were recorded.
Results: There was no statistically significant difference regarding the hemodynamic parameters between the groups. The median (range) peak sensory block height was T7 (T4-T9) in Group R and T7 (T4-T10) in Group B. Time to reach peak block height (13.2 ± 2.3 min in Group R vs. 13.7 ± 2.2 min in Group B; P = 0.385) was similar between the groups. Two dermatome regression time in sensory block (median 120 min vs. 85 min; P < 0.001) and duration of motor block (median 245 min vs. 150 min; P < 0.001) was significantly higher in Group B. The duration of analgesia (median 360 min vs. 245 min; P < 0.001) was significantly higher in the bupivacaine group.
Conclusion: Intrathecal isobaric bupivacaine-fentanyl combination produces a significantly longer duration of analgesia, sensory block and motor block than isobaric ropivacaine-fentanyl combination. As ropivacaine has a shorter duration of sensory and motor block, it may be preferred in day care surgery.
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TUTORIAL
Basics, common errors and essentials of statistical tools and techniques in anesthesiology research
p. 547
Sukhminder Jit Singh BajwaDOI :10.4103/0970-9185.169087 PMID :26702217
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FORUM ARTICLE
Acute pain services in India: A glimpse of the current scenario
p. 554
Parmanand N Jain, Sumitra G Bakshi, Raghu S ThotaDOI :10.4103/0970-9185.169088 PMID :26702218Background and Aims: Acute postoperative pain is still a neglected and unresolved issue in day to day practice. Acute pain services were conceived three decades ago to form a dedicated team to monitor pain assessment and treatment as per laid down pain protocols and guidelines. The concept of acute pain service (APS) is slowly evolving in India.
Material and Methods: This nationwide questionnaire survey was conducted to identify the status of postoperative pain, the prevalent treatment practices, and the prevalence of acute pain services in India. An electronic communication was sent to 4000 Indian Society of Anesthesiologists life members.
Results: We received only 146 responses mainly from faculties/consultants from few corporate hospitals or medical colleges. About 68 APSs were functioning, however, 20 APS do not have any training programs and 34 have no written protocols. Anesthesiologists were involved in postoperative pain management only when epidural analgesia was employed.
Conclusion: This survey found that majority of anesthesiologists agree to establish an APS, however administrative issues seem to be a major barrier.
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CASE REPORTS
Anesthetic management of parturient with thoracic kyphoscoliosis, malaria and acute respiratory distress syndrome for urgent cesarean section
p. 558
Ravindra Kr Pandey, Meenu M Batra, Vanlal Darlong, Rakesh Garg, Jyotsna Punj, Sri KumarDOI :10.4103/0970-9185.169090 PMID :26702219The management of cesarean section in kyphoscoliotic patient is challenging. The respiratory changes and increased metabolic demands due to pregnancy may compromise the limited respiratory reserves in such patients. Presence of other comorbidities like malaria and respiratory tract infection will further compromise the effective oxygenation. We report a case of kyphoscoliosis along with malaria and acute respiratory distress syndrome for urgent cesarean section.
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Fluoroscopically-guided epidural blood patch for spontaneous intracranial hypotension
p. 560
Manish Shah, David M Giampetro, Paul Kalapos, Julia C CaldwellDOI :10.4103/0970-9185.169091 PMID :26702220We present three patients with spontaneous intracranial hypotension who failed conservative treatment and were treated with image-guided epidural blood patch close to the cerebrospinal fluid (CSF) leak site. Each patient achieved significant long-term improvement of clinical symptoms and CSF leak related image findings.
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LETTERS TO EDITOR
All that appears well is not well: A novel method to detect an unusual manufacturing defect of the endotracheal tube
p. 562
Ritu Sachdeva, Nidhi BhatiaDOI :10.4103/0970-9185.169092 PMID :26702221
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Difficult airway after late postoperative bleeding in a case of total thyroidectomy, tracheal resection and reconstruction
p. 563
Mukul Chandra Kapoor, Shaloo Garg, Binita Jaiswal, Sharan Choudhri, Prashant SaxenaDOI :10.4103/0970-9185.169096 PMID :26702222
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Unrecognized epiglottic cyst: Cause of difficult mask ventilation
p. 566
Kavitha Jayaram, Indira Gurajala, Srikanth Diddi, Gopinath RamachandranDOI :10.4103/0970-9185.169097 PMID :26702223
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High arch palate: A bane for ProSeal laryngeal mask airway but a boon for I-gel
p. 568
Renu Bala, Amarjyoti Hazarika, Mihir Prakash Pandia, Niraj KumarDOI :10.4103/0970-9185.169098 PMID :26702224
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Unusual airway foreign body: Vigilance is the price of safety
p. 568
Sushma Barde, Preety Mittal Roy, Sangeeta Khanna, Yatin MehtaDOI :10.4103/0970-9185.169099 PMID :26702225
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Ultrasound: An ode to perioperative complicated malaria
p. 570
Sukhen Samanta, Sujay Samanta, Kajal Jain, Bireswar Sinha, Rudrashish HaldarDOI :10.4103/0970-9185.169100 PMID :26702226
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A child with Jervell and Lange-Nielsen syndrome for permanent pacemaker implantation and sympathectomy: Anesthesia management and considerations
p. 573
Abhijit S Nair, Anand M Nirale, Thota Gopal, K SriprakashDOI :10.4103/0970-9185.169101 PMID :26702227
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Mirror therapy: An adjunct to conventional pharmacotherapy in phantom limb pain
p. 575
Rashmi Datta, Mridul DharDOI :10.4103/0970-9185.169102 PMID :26702228
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INDEX
Index
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