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Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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Cardiovascular System Abnormal Findings I: Inspection and Palpation01:29

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In a cardiovascular examination, inspection and palpation are crucial for identifying abnormalities.
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Pulse01:16

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When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
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Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a...
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Pulse amplitude and quality01:17

Pulse amplitude and quality

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Pulse amplitude is a crucial indicator of cardiac health because it provides valuable insights into the strength of left ventricular contractions and the overall uniformity of blood circulation within the vasculature. The strength of the pulse is directly related to the force with which the heart contracts and the volume of blood being pumped.
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Pulsus Alternans: Caught in Action.

Emre Aslanger1, Burcu Aggül2, Duygu Genç Albayrak2

  • 1Department of Cardiology, Başakşehir Pine and Sakura City Hospital, Health Sciences University, Istanbul, Turkey.

Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions
|November 19, 2024
PubMed
Summary

Pulsus alternans, characterized by alternating strong and weak heartbeats, signals severe left ventricular dysfunction. This study presents a case offering insights into the initiation mechanism of this critical cardiac condition.

Keywords:
heart catheterizationheart failurehemodynamicsphysical examinationpulsus alternans

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Area of Science:

  • Cardiology
  • Physiology
  • Medical Diagnostics

Background:

  • Pulsus alternans is an arterial pulse waveform exhibiting alternating strong and weak beats with a regular rhythm.
  • Its presence, detected via physical examination or catheterization, signifies severe left ventricular (LV) dysfunction and portends a poor prognosis.
  • The precise underlying mechanism of pulsus alternans has been a subject of ongoing scientific debate.

Observation:

  • This study presents a case study featuring a classic example of pulsus alternans.
  • The provided tracing offers visual evidence of the condition's characteristic pattern.
  • The case is intended to shed light on the potential initiation mechanisms involved.

Findings:

  • The presented tracing visually confirms the alternating pattern of strong and weak arterial pulses.
  • The case offers preliminary clues that may contribute to understanding how pulsus alternans is initiated.
  • Further analysis of such tracings could elucidate the complex pathophysiology.

Implications:

  • Understanding the initiation mechanism of pulsus alternans is crucial for improving diagnosis and patient outcomes.
  • This research may guide future studies investigating severe left ventricular dysfunction.
  • Identifying the mechanisms can lead to targeted therapeutic strategies for patients with poor prognosis.