Effect of perioperative magnesium sulfate and labetalol infusion on peripheral perfusion and postoperative pain in nasal surgery: a randomized controlled trial

Comparison of labetalol and lidocaine in induction of controlled hypotension in tympanoplasty: a randomized clinical trial

OBJECTIVES

This study aimed to compare the efficacy of labetalol and lidocaine in tympanoplasty surgery, specifically evaluating their impact on hemodynamic changes and perioperative outcomes.

METHODS

A randomized controlled trial was conducted with 64 patients scheduled for tympanoplasty. Patients were randomly assigned to receive either 0.5-2 mg/min labetalol or 1.5 mg/kg/h lidocaine 1% to achieve controlled hypotension during surgery. The efficacy of the drugs was assessed by comparing the Mean Arterial Pressure (MAP), surgeon's satisfaction, time to target MAP, bleeding volume, postoperative pain scores, the need for analgesic medication in recovery, sedation, and other additional parameters.

RESULTS

The hemodynamic parameters showed a similar trend over time in both the labetalol and lidocaine groups. The median bleeding volume in the labetalol group (10 cc) was lower than that in the lidocaine group (30 cc), although this difference was not statistically significant (p = 0.11). Similarly, surgeon's satisfaction level, pain intensity, and sedation level in the recovery room did not show statistically significant differences between the two groups (p > 0.05). The duration of surgery, recovery stay, and extubation time also did not significantly differ between the groups. Both medications took approximately the same time (20 min) to reach the target MAP and exhibited comparable hemodynamic responses (p > 0.05).

CONCLUSION

Both labetalol and lidocaine effectively achieved controlled hypotension during tympanoplasty surgery, thereby improving surgical conditions. The choice of medication should be based on individual patient characteristics and the anesthesiologist's judgment.

LEVEL OF EVIDENCE

II.

Peripheral intravenous infusion for children based on computer digital video technology

PURPOSE

Intravenous infusion techniques often take a long time and require continuous monitoring of the infusion, and the needle must be removed promptly at the end of the injection, placing a burden on the patient, family and medical workers. Thus, this paper presents a droplet flow rate monitoring system based on an embedded system.

METHODS

In our retrospective study, according to different intervention measures, 80 patients were divided into two groups to compare the improvement of children's adverse psychological conditions. The patients were divided into control and intervention groups, with 40 patients in each group. Patients in the intervention group received psychological care and Online Real-Time Fusion Method to monitor the infusion state. Patients in the control group received routine infusions. Computer digital video technology and online real-time fusion algorithm were utilized to determine whether the parameters of the intravenous infusion model were optimized. The model's accuracy was used to evaluate whether the success rate of one-time needle insertion was improved.

RESULTS

The system can also be used for other monitoring. It is simple and convenient to set up and dismantle. The system can significantly relieve medical workers and patients. It was found that the observation group is significantly better than the control group in terms of psychological improvement (P<0.05). Comparing the patient's satisfaction, the difference between the two groups was statistically significant.

CONCLUSION

When administering intravenous infusions in children, applying various forms of psychological interventions and giving emotional support can significantly improve their compliance and their mental state. It is of great significance to enhance the effect of infusions in patients.