مقایسه نتایج روش تزریق منفرد با روش چند تزریقی در ایجاد بی‌حسی منطقه‌ای اینفراکلاویکولار با هدایت اولتراسونوگرافی در بیماران تحت اعمال جراحی اندام فوقانی

Aim and Background: Nowadays, ultrasound-guided infraclavicular block has led to impressive results in improving upper extremity anesthesia and patient satisfaction.The aim of this study was to compare the results of infraclavicular block as single injection versus multiple injectons in upper extremity surgery. Methods and Materials: In this randomized clinical trial, patients undergoing upper limb surgery were enrolled.After localizing the axillary artery under the guide of ultrasound 30 ml lidocaine (1.5%) was injected in the single injection group. In the multiple injections group, 10 ml lidocaine was injected in posterior, medial and latral position. Findings: The mean duration of procedure in single injection and multiple injections groups were 3.29 ± 1.21 minutes and 4.81 ± 1.90 minutes, respectively. The mean time to reach complete anesthesia, was not siginificantly different between the groups. In Single injection group, all patients achieved complete anesthesia after 15 minutes of injection. However partial anesthesia was observed in one case in the multiple injections group. Conclusions: Single injection ultrasound-guided infraclavicular block is a fast, simple and safe method of anesthesia for upper extremity surgery. Regarding its simplicity and effectiveness, this technique is preferred to multiple injections technique.