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[Paradoxical pulse]

V Mooser1, C Regamey, J C Stauffer

  • 1Clinique de médecine interne, Hôpital cantonal, Fribourg.

Schweizerische Rundschau Fur Medizin Praxis = Revue Suisse De Medecine Praxis
|February 8, 1994
PubMed
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Pulsus paradoxus, a key sign of cardiac tamponade, is assessed noninvasively at the bedside. Understanding its physiological basis and diagnostic accuracy, alongside echocardiography, aids in diagnosing hemodynamic compromise.

Area of Science:

  • Cardiology
  • Physiology

Background:

  • Pulsus paradoxus is a critical clinical sign in cardiac tamponade.
  • It is observed in patients with low cardiac output.
  • Bedside examination is crucial for its detection.

Purpose of the Study:

  • To review the definition and noninvasive measurement of pulsus paradoxus.
  • To discuss the physiological mechanisms underlying pulsus paradoxus in tamponade.
  • To evaluate the diagnostic utility of pulsus paradoxus and echocardiography.

Main Methods:

  • Review of existing literature on pulsus paradoxus.
  • Discussion of physiological fluctuations in blood pressure during respiration.
  • Presentation of echocardiography's role in diagnosing cardiac tamponade.

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Main Results:

  • Pulsus paradoxus definition and noninvasive measurement techniques are detailed.
  • Mechanisms exaggerating pulsus paradoxus in tamponade are explained.
  • The sensitivity and specificity of pulsus paradoxus are discussed.

Conclusions:

  • Pulsus paradoxus is an important bedside sign for cardiac tamponade.
  • Echocardiography is a sensitive and accurate tool for evaluating hemodynamic compromise in pericardial effusion.