Using oxygen delivery targets to optimize resuscitation in critically ill patients

Area of Science:

• Critical care medicine
• Cardiovascular physiology
• Hemodynamic monitoring

Background:

• Hemodynamic optimization using fluid and inotropic therapies in critically ill patients is a long-standing area of research with ongoing controversy.
• Over 25 years of research have yielded inconsistent findings, necessitating a review of the current evidence and evolving concepts.

Purpose of the Study:

• To review the current evidence base for fluid and inotropic therapies in hemodynamic optimization.
• To describe the evolution of hemodynamic optimization concepts in critically ill patients.

Main Methods:

• Review of existing literature on fluid and inotropic therapies for hemodynamic optimization.
• Analysis of recent developments and their impact on clinical practice and research design.

Main Results:

• Inconsistent results from numerous small trials continue to fuel debate.
• Recent developments include targeted optimization during resuscitation, cautious dosing, and improved understanding of mechanistic effects.
• Pulmonary artery catheter use has been confirmed not to increase mortality.

Conclusions:

• Advances in understanding have guided the design of large-scale randomized trials.
• The definitive value of hemodynamic optimization is anticipated to be established in the near future (within 5 years).