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Year : 2018  |  Volume : 34  |  Issue : 3  |  Page : 314-317

Ceftriaxone concentration at the surgical site following systemic and isolated upper limb injection

1 Department of Anaesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
2 Department of Pharmacology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
3 Department of Orthopaedics, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India

Correspondence Address:
Stalin Vinayagam
FR4, Sri Anbalaya Apartments, 17th Cross Street, Krishna Nagar, Puducherry - 605 008
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/joacp.JOACP_28_18

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Background and Aims: This study was conducted to find out the equipotent dose of isolated upper limb injection of ceftriaxone in the upper limb (IUL) surgeries under tourniquet that would attain a peak bone marrow concentration (Cmax) similar to systemic (ST) 1 g injection. Material and Methods: Patients were allocated into two groups – ST and IUL. ST group (n = 5) received 1 g of ceftriaxone 20 min before tourniquet inflation, and IUL group received calculated dose (n = 5 in each dosage, i.e., 200, 100, 75, and 50 mg) diluted in 50 mL of normal saline distally after tourniquet inflation. Venous and bone marrow samples were collected at various time intervals intra- and post-operatively. Ceftriaxone concentration was analyzed by high-performance liquid chromatography. Results: There was no significant difference between Cmax following ST 1 g injection and IUL injection with 75 mg (155.8 ± 2.1 vs 158.5 ± 3.1 μg/mL, respectively; P = 0.1). There was significant difference in area under curve (AUC) and t½ between ST 1 g injection and IUL injection with 75 mg of ceftriaxone (AUC 1285 ± 67 vs 784.4 ± 28 μg/mL/h, respectively; P < 0.001), (t½ 5.2 ± 0.5 vs 4.7 ± 0.3 h, respectively; P < 0.001). None of the patients in the ST and IUL groups had post-operative infection up to a period of 1 week duration. Conclusion: IUL injection with 75 mg of ceftriaxone can be equipotent and as effective as ST 1 g injection in upper limb orthopedic surgeries under tourniquet.

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