Ultrasound-guided low thoracic paravertebral block versus peritubal infiltration for percutaneous nephrolithotomy: a prospective randomized study
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The aim of this study was to investigate the efficacy of peritubular infiltration and ultrasound-guided low thoracal paravertebral block in patients undergoing percutaneous nephrolithotomy (PCNL). Sixty patients, American Society of Anesthesiologists I–II, between the ages of 18 and 65 years undergoing PCNL were randomized into three groups. Group peritubal infiltration (Pi, n = 20) received infiltration along the nephrostomy tube 20 ml 0.25% bupivacaine, in 6 and 12 o’clock position. Group paravertebral block (Pv, n = 20) received single-shot paravertebral block with 20 ml 0.25% bupivacaine at the level of T8–T9. Group control (C, n = 20): no intervention is performed. Postoperative opioid consumption and pain scores, opioid-related side effects, and additional analgesic requirement were recorded. The fentanyl consumption in Group Pv was significantly lower in comparison to Group C in all time intervals (p < 0.05). In the comparison of Group Pv and Group Pi, fentanyl consumptions in the postoperative 0–4th hours (100.00 ± 50.65 and 145.00 ± 61.55, respectively), 4–8th hours (50.00 ± 64.88 and 121.25 ± 56.93 respectively), and in the total of 24 h (197.50 ± 133.74 and 368.75 ± 116.66 respectively) were significantly lower in Group Pv (p < 0.05). The dynamic VAS scores analyzed at the 1st and 2nd hours were significantly lower in Group Pv than Group Pi (p < 0.05). Eight patients in Group C, two patients in Group Pi and 1 patient in Group Pv required additional analgesics and the difference was significant (p < 0.05). Paravertebral block achieved more effective analgesia by reducing postoperative opioid consumption and VAS scores comparison to the control and peritubal infiltration groups in patients undergoing percutaneous nephrolithotomy.
KeywordsUltrasound Paravertebral block Peritubal infiltration Percutaneus nephrolithotomy
Special thanks to “Ufuk Demir, Omer Doymus, and Mursel Ekinci” for their guidance and supports.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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