B R Jones1, M S Scheller. 1. Department of Anesthesiology, School of Medicine, University of California, San Diego.
Abstract
STUDY OBJECTIVE: To determine the increase in flow of a hydratable enlarging intravenous (IV) catheter in anesthetized patients. DESIGN: A randomized, nonblinded study, with standard Teflon IV catheters used as controls. SETTING: Operating room at a university medical center. PATIENTS: Thiry adult patients receiving general anesthesia for lower extremity surgery. INTERVENTIONS: An IV catheter was placed in the upper extremity, and flow measurements were made by measuring the time for infusion of 250 ml of normal saline within 1 minute after placement and at 1 hour after placement. MEASUREMENTS AND MAIN RESULTS: The enlarging catheters had a statistically significant average flow increase of 26% after 1 hour indwelling time. The standard Teflon catheters had no statistically significant change in flow after 1 hour. The percentage increase in flow for the enlarging catheters was not as great as previously seen in vitro. CONCLUSIONS: Flow through enlarging IV catheters placed in anesthetized patients increases after 1 hour. The percentage increase in flow is not as great as previously seen in vitro and may be due to skin, vein, and subcutaneous tissues preventing complete expansion.
RCT Entities:
STUDY OBJECTIVE: To determine the increase in flow of a hydratable enlarging intravenous (IV) catheter in anesthetized patients. DESIGN: A randomized, nonblinded study, with standard Teflon IV catheters used as controls. SETTING: Operating room at a university medical center. PATIENTS: Thiry adult patients receiving general anesthesia for lower extremity surgery. INTERVENTIONS: An IV catheter was placed in the upper extremity, and flow measurements were made by measuring the time for infusion of 250 ml of normal saline within 1 minute after placement and at 1 hour after placement. MEASUREMENTS AND MAIN RESULTS: The enlarging catheters had a statistically significant average flow increase of 26% after 1 hour indwelling time. The standard Teflon catheters had no statistically significant change in flow after 1 hour. The percentage increase in flow for the enlarging catheters was not as great as previously seen in vitro. CONCLUSIONS: Flow through enlarging IV catheters placed in anesthetized patients increases after 1 hour. The percentage increase in flow is not as great as previously seen in vitro and may be due to skin, vein, and subcutaneous tissues preventing complete expansion.
Authors: Rishabh Tennankore; Margaret Brunette; Tyler Cox; Rigoberto Vazquez; Ariella Shikanov; Michael L Burns; Brian Love Journal: J Mater Sci Mater Med Date: 2021-04-23 Impact factor: 3.896
Authors: Rigoberto Vazquez; Rishabh Tennankore; Ariella Shikanov; Leonard A Mermel; Brian Love; Michael L Burns Journal: Health Sci Rep Date: 2021-07-01