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Updated: Jun 8, 2026

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
Published on: January 20, 2023
Further cautions for the use of ventilatory-induced changes in arterial pressures to predict volume responsiveness
1Royal Victoria Hospital, 687 Pine Avenue West, Montreal, Quebec, Canada. sheldon.magder@muhc.mcgill.ca
Abstract:
Variations in systemic arterial pressure with positive-pressure breathing are frequently used to guide fluid management in hemodynamically unstable patients. However, because of the complex physiology that determines the response, there are important limitations to their use. Two papers in a previous volume add pulmonary hypertension as limitations. Uncritical use of ventilatory-induced changes in arterial pressure can lead to excessive volume therapy and potential clinical harm, and they must be used with respect and thought.
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