Objective We aimed to study the performance evaluation indicators of central venous pressure (CVP) measuring system for ICU patients in clinical trials and discuss its impact factors.Methods Ac-cording to the performance evaluation indicators of CVP measuring system based on the Delphi method,a form was created to evaluate the continuous CVP monitoring of 197 ICU patients and then the data were collected.A comparative analysis was performed to verify the factors affecting the performance of CVP measuring system.Results The performance of CVP measuring system was affected by the number of threeway switches,vasoactive drugs and positive end-expiratory pressure,the statistical value was 8.577,-6.773and 3.244.There were no statistically significant differences with respect to performance evaluation indicators of CVP measuring system among the patients with different body positions.Conclusions The performance evaluation indicators of CVP measuring sys-tem proves to be feasible and practical by clinical empirical research.Their influencing factors were dis-cussed and they offer a valuable reference for the determination of the performance of CVP measuring sys-tem in clinical practice.

Objective To explore the clinical efficacy of high-frequency electric snare device under elec-tronic laryngoscope in the treatment of epiglottic cyst.Methods A total of 100 patients with definitely diag-nosed epiglottic cyst receiving outpatient operation treatment in the First Affiliated Hospital of Gannan Medi-cal University from April 2021 to March 2023 were selected as the research subjects and included into the ob-servation group and control group according to the visiting order,50 cases in each group.The observation group was treated with high-frequency electric snare for epiglottic cyst resection under electronic laryngo-scope,and the control group was treated with laryngeal tissue forceps under electronic laryngoscope for uncov-ering operation of epiglottic cyst.The operation time,intraoperative blood loss volume,pain degree within postoperative 24 h,pain duration,complete resection rate and recurrence rate in postoperative 3 months were compared between the two operation methods.Results The operation time,intraoperative blood loss volume,VAS score within postoperative 24 h and pain duration in the observation group were significantly less than those in the control group,the complete resection rate was significantly higher than that in the control group,and the differences were statistically significant (P<0.05).The two groups were followed up for 3 months. Only 2 cases in the control group relapsed,which were epiglottic multiple cyst,and the recurrence rate had no statistical difference between the two groups (P>0.05).No dyspnea,massive bleeding and epiglottic adhesion appeared.Conclusion The high-frequency electric snare device under electronic laryngoscope for treating epi-glottic cyst has the advantages of short operation time,less blood loss,postoperative light pain and high com-plete resection rate.