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Τετάρτη 19 Σεπτεμβρίου 2018

Ultrasound-Assisted Technology Versus the Conventional Landmark Location Method in Spinal Anesthesia for Cesarean Delivery in Obese Parturients: A Randomized Controlled Trial

BACKGROUND: Spinal anesthesia, which is commonly used in cesarean deliveries, is often difficult to perform in obese parturients because of poorly palpable surface landmarks and positioning challenges. This study aimed to evaluate the benefits of ultrasound-assisted technology for performing spinal anesthesia in obese parturients. METHODS: Parturients with a body mass index (BMI) ≥30 kg/m2 scheduled for elective cesarean delivery were randomized to undergo spinal anesthesia using the conventional landmark location technique (landmark group, n = 40) or prepuncture ultrasound examination (ultrasound group, n = 40). All participants underwent spinal anesthesia in the lateral position. The primary outcome was the first-attempt success rate. Secondary outcomes were the number of skin punctures and needle passes, procedure times, patient satisfaction, changes in the intended interspace, and incidence of complications. RESULTS: The ultrasound group had a significantly higher first-attempt success rate (87.5% vs 52.5%; P = .001), fewer cases requiring >10 needle passes (1 vs 17; P 10 needle passes (P = .231), spinal injection time (P = .081), or total procedure time (P = .729); however, more time was required to identify the needle insertion site in the ultrasound group (P 10 needle passes (P ≤ .01), and shorter procedure times, including the time required to identify the needle insertion site (P

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