Introduction Intravenous propofol anesthesia is widely used in painless endoscopy. However, propofol injection pain is a common adverse effect. This study investigated the effects of nalbuphine and lidocaine in reducing propofol-induced injection pain. Methods In this double-blind, randomized study, 330 patients were randomly divided into three groups by using a random number table: the nalbuphine group (N), lidocaine group (L), and control group (C). The N, L, and C groups received either 0.1 mg/kg nalbuphine, 0.5 mg/kg lidocaine, or an equivalent volume of normal saline, respectively, as pretreatment drug. Then propofol was manually injected. The primary outcome of this study was the incidence of propofol-induced injection pain, and secondary outcomes included the severity of propofol-induced injection pain, vital signs, and adverse events, including hypotension, bradycardia (< 50 beats/min), hypoxemia (SpO 2 < 90%), drowsiness, physical movement, and cough. Results The percentages of patients with propofol injection pain were higher in group C than in group N and group L (64, 34, and 27%, respectively, p < 0.05). The percentage of patients with severe pain after propofol injection was significantly higher in group C than in group N and group L (12, 1, and 0%, respectively, p < 0.05). The doses of propofol in group C and group L were significantly higher than that in group N. More patients suffered hypoxemia in group N than in group C and group L. Then, less patients got physical movement and cough in group N. Conclusions Pretreatment with nalbuphine 0.1 mg/kg was effective in reducing propofol-induced injection pain and propofol consumption. Propofol combined with nalbuphine can be safely and effectively used during gastroscopy. Trial Registration Chinese Clinical Trial Registry; ChiCTR1900025438.
Background: Sufentanil-induced cough is frequent during the induction of anesthesia. The aim of this research was to assess the influence of pretreatment with nalbuphine on sufentanil-induced cough. Patients and Methods: A total of 210 American Society of Anesthesiologists (ASA) I-II patients who are 18-70 years old and scheduled for elective surgery were randomly divided into two groups. Group N was pretreated with 0.3 mg/kg nalbuphine at 150 s before induction with sufentanil, and Group C received the same volume of normal saline as the placebo. We assessed the incidence and severity of cough 2 minutes after sufentanil administration. We also recorded the hemodynamic changes and side effects of sufentanil after sufentanil administration. Results: No patients had cough in group N, and 30 patients had cough in group C (degree of cough: mild 8; moderate 10; severe 12). The incidence and severity of cough in group N were significantly lower than those in group C. Conclusion: Pretreatment with 0.3 mg/kg nalbuphine significantly suppressed the incidence and intensity of sufentanil-induced cough.
Objective This study was performed to compare the performance of rotational versus standard insertion of the i-gel® (Intersurgical, Wokingham, Berkshire, England) in patients of advanced age. Methods This single-center, randomized, double-blind trial involved 140 patients of advanced age undergoing general anesthesia. The patients were randomized into the standard group and rotational group. The primary objective of this study was to compare the success rate of the first attempt. The secondary outcome indicators were the insertion time and postoperative complications. Results The placement success rate on the first attempt was significantly higher in the rotational group than in the standard group (92% vs. 73%, respectively). The overall success rate was 100% for the rotational method and 95% for the standard method. The mean ± standard deviation insertion times were similar (15 ± 7.34 vs. 14 ± 7.26 s, respectively). The incidence rates of blood staining of the i-gel®, hoarseness, and sore throat did not increase with the rotational technique and were not significantly different from those of the standard method. Conclusion Compared with the standard method, the rotational method of i-gel® insertion had a higher success rate and did not increase the insertion time and complications in patients of advanced age. Trial registration: This trial was registered at the Chinese Clinical Trial Registry (ChiCTR2000038763, Date of registration: 30/09/2020).
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