Evaluation of formulas for optimal positioning of central venous catheters

Chest. 1995 Jun;107(6):1662-4. doi: 10.1378/chest.107.6.1662.


Objective: To evaluate the accuracy of formulas designed to estimate the optimum intravenous length of central venous catheters.

Design: A prospective study of catheter insertion sites to evaluate the accuracy of predetermined formulas that predict the intravascular insertion length required to avoid intracardiac catheter tip placement.

Setting: A 320-bed tertiary hospital.

Patients: Critically ill patients requiring central venous access for therapy or monitoring.

Main results: The formulas accurately predicted required intravascular length of the central venous catheter in 217 of 228 (95%) cases. The formula for predicting catheter length was most accurate when the subclavian vein was used. It was least accurate when the right internal jugular vein was selected.

Conclusions: The formulas can accurately predict the required length of catheters and thereby reduce the possibility of complications and save time and expense.

MeSH terms

  • Catheterization, Central Venous / methods*
  • Female
  • Humans
  • Male
  • Prospective Studies