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Related Concept Videos

Pulse01:16

Pulse

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.
The pulse serves as a clinical indicator...
Pulse01:05

Pulse

The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls between...
Pulse amplitude and quality01:17

Pulse amplitude and quality

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.
A weak or absent pulse may indicate reduced cardiac output or poor left ventricular contraction, which can be signs of cardiovascular dysfunction or...
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

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 stethoscope.
Cardiovascular System Abnormal Findings I: Inspection and Palpation01:29

Cardiovascular System Abnormal Findings I: Inspection and Palpation

In a cardiovascular examination, inspection and palpation are crucial for identifying abnormalities.
Abnormal findings observed during an inspection

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Related Experiment Video

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Quantitative Autonomic Testing
11:40

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Published on: July 19, 2011

Finger pulse volume in patients with panic attacks.

P Bharathi1, P Sembulingam, K Sembulingam

  • 1P. Bharathi, Department of Psysiology, Sri Ramachandra Medical College & Research Institute, Porur, Madras -600116.

Indian Journal of Psychiatry
|July 22, 2011
PubMed
Summary
This summary is machine-generated.

Peripheral blood flow, measured by Finger Pulse Volume (FPV), is significantly altered in untreated panic attack patients during stress. Untreated patients exhibit increased FPV at rest and during recovery compared to treated individuals.

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Area of Science:

  • Cardiovascular Physiology
  • Psychophysiology
  • Clinical Psychology

Background:

  • Panic attacks are associated with physiological changes.
  • Peripheral blood flow regulation may be implicated in panic disorder.

Purpose of the Study:

  • To investigate peripheral blood flow alterations in panic attack patients under induced stress.
  • To compare these changes between untreated patients, treated patients, and controls.

Main Methods:

  • Nine patients with a history of panic attacks were recruited.
  • Mental stress was induced via arithmetic calculation and hyperventilation.
  • Finger Pulse Volume (FPV) was measured to assess peripheral blood flow.

Main Results:

  • Untreated patients showed significant alterations in FPV post-mental stress compared to controls and treated patients.
  • Increased FPV was observed in untreated patients at rest and during recovery after stress.
  • These findings suggest a distinct peripheral blood flow response in untreated panic disorder.

Conclusions:

  • Peripheral blood flow regulation is notably different in untreated panic attack patients during stress.
  • Treatment may normalize or alter the stress-induced peripheral hemodynamic response.
  • Further research is warranted to explore the mechanisms underlying these FPV changes in panic disorder.