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    Comparison of the effects of two different low-doses of isobaric bupivacaine on intraoperative hemodynamics under spinal anaesthesia during caesarean section: a randomized controlled trial
    (IMR Press Limited, 2023) Dostbil, Ayşenur; Atalay, Canan; İnce, İlker; Aksoy, Mehmet; Özmen, Özgur; Kasali, Kamber; Yapca, Ömer Erkan; Küçün, Tuğberk; Aksoy, Ayşe Nur; Şenocak, Gamze Nur Cimilli
    Background: The objective of this study was to conduct a randomized controlled trial in order to examine the hemodynamic impacts of two different doses of intrathecal isobaric bupivacaine (5 mg and 7 mg) when combined with 15 μg fentanyl in the context of patients undergoing caesarean section under combined spinal epidural anesthesia. Methods: Eighty patients with American Society of Anesthesiologists physical status I and II, aged between 16-50 years, who would undergo elective caesarean section under combined spinal epidural anaesthesia were randomly allocated to Group A and Group B (n = 40, for each group). Group A patients received a solution containing 5 mg isobaric bupivacaine + 15 μg fentanyl (1.3 mL), while Group B patients received a solution containing 7 mg isobaric bupivacaine + 15 μg fentanyl (1.7 mL) intrathecally. Incidences of hypotension, intraoperative systolic blood pressure, diastolic blood pressure, heart rate, motor block resolving time, and analgesia duration were recorded. Results: Group A had a substantially lower incidence of hypotension than Group B (p = 0.022). Patients in Group B had significantly lower systolic blood pressure values at the 6th, 8th, 10th, 12th, 14th, 15th, and 30th minutes of the surgery compared to Group A (p = 0.012, p = 0.014, p = 0.005, p = 0.016, p < 0,001, p = 0.002, and p = 0.011; respectively). Both groups had similar diastolic blood pressure and heart rate values during surgery (p > 0.05). The motor block resolving time and analgesia duration were longer in Group B compared to Group A (p < 0.001 for both). Two (5%) patients in Group A and ten (25%) patients in Group B experienced postoperative itching (p = 0.012). Conclusions: We concluded that combining 5 mg isobaric bupivacaine with 15 mcg of fentanyl administered intrathecally provides adequate anaesthesia while maintaining better hemodynamic stability in patients undergoing caesarean section.
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    Comparison of the postoperative analgesic efficacy of serratus anterior plane block with different types of blocks for video-assisted thoracoscopic surgery: A systematic review and meta-analysis of randomized controlled trials
    (Baycinar Medical Publishing, 2024) Dostbil, Aysenur; Kasali, Kamber; Aydin, Yener; Ince, Ilker; Ulas, Ali Bilal; Yilmaz, Mehmet Akif; Ceren, Muhammed; Eroğlu, Atilla; Ozgodek, Habip Burak; Ozkal, Mirac Selcen; Elsharkawy, Hesham
    Background: The study aimed to compare the analgesic efficacy of single-shot serratus anterior plane block (SAPB) for video-assisted thoracoscopic surgery (VATS) with other regional block techniques. Methods: In this meta-analysis, randomized controlled trials published in the PubMed, Scopus, Web of Science, ClinicalKey, and PROSPERO electronic databases between March 24, 2014 and March 24, 2024 comparing the analgesic efficacy of SABP with other regional blocks in adult patients undergoing VATS were reviewed. Results: Nine randomized controlled trials consisting of a total of 537 participants (287 males, 250 females; mean age: 55.2±13.1 years) were included in this meta-analysis. Serratus anterior plane block was compared with erector spinae plane block (ESPB), local infiltration anesthesia (LIA), and thoracic paravertebral block (TPVB). The postoperative 24-h cumulative opioid consumption was statistically significantly higher in SAPB than in ESPB (standardized mean difference [SMD]=1.98; 95% confidence interval [CI], 0.23 to 3.73; Z=2.22; p=0.03; I2=97%; random effects model) and TPVB (SMD=0.63; 95% CI, 0.31 to 0.96; Z=3.84; p<0.001; I2=0%; fixed effects model) and lower than in LIA (SMD=–1.77; 95% CI, –2.24 to –1.30; Z=7.41; p<0.001; I2=0%; fixed effects model). Active pain scores 2 h postoperatively were statistically significantly lower in SAPB than in LIA (SMD=–2.90; 95% CI, –5.29 to –0.50; Z=2.37; p=0.02; I2=93%; random-effects model). At 12 h postoperatively, both passive pain scores (SMD=0.37; 95% CI, 0.07 to 0.66; Z=2.41; p=0.02; I2=0%; fixed effects model) and active pain scores (SMD=0.55; 95% CI, 0.25 to 0.85; Z=3.60; p<0.001; I2=0%; fixed effects model) were statistically significantly lower in ESBP than in SAPB. There was no difference between SAPB and the other groups in terms of the incidence of postoperative nausea and vomiting. Conclusion:After a comprehensive evaluation of postoperative analgesic effects, it appears that ESBP and TPVB may be better than SABP, and SABP may be better than LIA for analgesia of patients undergoing VATS. Further studies are required to determine the optimal regional analgesia technique in VATS.