The weight debate.

Area of Science:

• Critical care medicine
• Clinical pharmacology
• Patient safety

Background:

• Therapeutic interventions in critical care are frequently dosed based on patient body size.
• Accurate dosing is crucial for treatment efficacy and preventing adverse events like overdose.
• Critically ill patients often have altered body compositions, making total body weight an unreliable dosing metric.

Purpose of the Study:

• To review various size descriptors used in critical care.
• To examine the origin and calculation of these descriptors.
• To analyze the role of size descriptors in dosing common critical care therapies and identify future research directions.

Main Methods:

• Literature review of size descriptors used in critical care.
• Analysis of the calculation and application of these descriptors.
• Examination of their impact on drug dosing for common critical care therapies.

Main Results:

• Several size descriptors, including predicted weights derived from sex, weight, and height, are utilized.
• These predicted weights aim to minimize dosing errors associated with total body weight in critically ill populations.
• The review explores the current application and potential future research avenues for size descriptors in critical care.

Conclusions:

• Size descriptors are essential for optimizing drug dosing in critical care.
• Utilizing predicted weights can enhance therapeutic precision and patient safety.
• Further research is warranted to refine and validate these descriptors for broader clinical application.