Pulsus paradoxus

Area of Science:

• Cardiology
• Pulmonology
• Internal Medicine

Background:

• Pulsus paradoxus is a clinical finding with significant diagnostic implications.
• Understanding its mechanisms is crucial for accurate patient assessment.
• It is frequently encountered in conditions like cardiac tamponade and acute asthma.

Purpose of the Study:

• To review the causes, pathophysiology, detection, and clinical importance of pulsus paradoxus.
• To highlight its role in diagnosing various medical conditions.
• To emphasize its value in clinical practice and medical education.

Main Methods:

• A comprehensive literature search was conducted using PubMed, EMBASE, and CINAHL databases.
• Search terms included "Pulsus paradoxus," "cardiac tamponade," "acute asthma," and "ventricular interdependence."
• All study types were included to provide a broad overview.

Main Results:

• Pulsus paradoxus is defined as an inspiratory fall in systolic blood pressure exceeding 10 mm Hg.
• Key pathophysiological mechanisms include exaggerated intrapleural pressure swings and biventricular interactions.
• The sign demonstrates high sensitivity in diagnosing cardiac tamponade.

Conclusions:

• Pulsus paradoxus is a valuable physical examination finding.
• It is particularly useful in the diagnosis of cardiac tamponade and assessing acute asthma severity.
• Clinical skills, including the detection of pulsus paradoxus, remain essential in medical education and practice.