title: Intravenous line diameter: is bigger really better?
abstract: OBJECTIVE
  To determine whether the size of an intravenous catheter influences the cannulation success rate and procedure duration among military medics.
  
  
  METHODS
  According to a prospective, randomized, controlled crossover study design, 114 military medic cadets were paired and inserted 14-gauge (14G) and 16G intravenous catheters into veins in the antecubital fossa. Success rate and procedure duration were determined.
  
  
  RESULTS
  The overall success rate for 14G and 16G catheters was 80 and 86%, respectively. Average procedure duration was 33 +/- 14.7 and 35.2 +/- 14.9 seconds, respectively. No significant differences were found in either success rate or procedure duration between the examined catheter sizes.
  
  
  CONCLUSIONS
  Successful intravenous cannulation was unaffected by catheter size. Therefore, 14G intravenous catheters are recommended for use by military medics on the battlefield.
authors.affiliation: Department of Urology, Assaf-Harofe Medical Center, Zrifin, Israel.
authors.forename: D
authors.initials: D
authors.lastname: Leibovici
authors.forename: O N
authors.initials: ON
authors.lastname: Gofrit
authors.forename: B
authors.initials: B
authors.lastname: Fredman
authors.forename: J
authors.initials: J
authors.lastname: Shemer
authors.forename: Y
authors.initials: Y
authors.lastname: Noga
authors.forename: R J
authors.initials: RJ
authors.lastname: Heruti
authors.forename: M
authors.initials: M
authors.lastname: Stein
mesh_terms: D000328:Adult; D000488:Allied Health Personnel; D002404:Catheterization; D002983:Clinical Competence; D018592:Cross-Over Studies; D004867:Equipment Design; D006801:Humans; D007557:Israel; D008297:Male; D008889:Military Personnel; D011446:Prospective Studies