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Related Concept Videos

Blood Pressure01:24

Blood Pressure

11.0K
The movement of blood in a human body, commonly referred to as blood flow, is determined by the volume of blood that traverses a certain section of the bodily system per unit time. It is the rhythmic contraction of the heart's ventricles that primarily instigates this movement. As the ventricles contract, blood is forced into the prominent arteries, which then flow from areas of greater pressure to lower pressure areas. This movement continues into smaller arteries and arterioles and...
11.0K
Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

1.5K
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
1.5K
Regulation of Stroke Volume01:27

Regulation of Stroke Volume

5.6K
The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
5.6K
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

3.9K
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...
3.9K
Blood Pressure Imbalances and Circulatory Shock01:24

Blood Pressure Imbalances and Circulatory Shock

1.8K
Disorders affecting blood volume, vascular tone, or vascular function can disrupt vascular homeostasis, including conditions like hypertension, hemorrhage, and shock.
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...
1.8K
Alterations in Blood Pressure01:30

Alterations in Blood Pressure

2.4K
Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart...
2.4K

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Related Experiment Video

Updated: Mar 26, 2026

Real-Time Monitoring and Modulation of Blood Pressure in a Rabbit Model of Ischemic Stroke
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Real-Time Monitoring and Modulation of Blood Pressure in a Rabbit Model of Ischemic Stroke

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Blood Pressure in Acute Ischemic Stroke.

Michael McManus1, David S Liebeskind2

  • 1Neurovascular Imaging Research Core & UCLA Stroke Center, University of California, Los Angeles, CA, USA.

Journal of Clinical Neurology (Seoul, Korea)
|February 3, 2016
PubMed
Summary

Blood pressure management in acute stroke is critical, as both low and high readings correlate with worse outcomes. Further research is needed to establish optimal blood pressure targets for acute ischemic stroke patients.

Keywords:
acute ischemic strokeblood pressure augmentation and strokehypertensionhypotensionpermissive hypertension

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Area of Science:

  • Neurology
  • Cardiovascular Medicine
  • Critical Care Medicine

Background:

  • Hypertension affects up to 84% of acute stroke patients.
  • Abnormal blood pressure (low or severely elevated) is linked to poorer stroke outcomes.
  • Malignant blood pressure trends are observed during the acute-to-subacute stroke transition.

Purpose of the Study:

  • To review blood pressure trends in acute stroke patients.
  • To evaluate the safety and efficacy of blood pressure modulation in acute ischemic stroke.
  • To provide a framework for future research in stroke neurology.

Main Methods:

  • Literature review of studies on blood pressure in acute stroke.
  • Analysis of trends in blood pressure during stroke phases.
  • Evaluation of existing randomized controlled trials on blood pressure modulation.

Main Results:

  • Outcomes are worse in acute stroke patients with low or severely elevated blood pressure.
  • Physiologic data suggest blood pressure modulation is important for cerebral blood flow.
  • Randomized controlled trials have not provided robust evidence for blood pressure modulation in acute ischemic stroke.

Conclusions:

  • Blood pressure management is crucial in acute stroke care.
  • Despite evidence, robust clinical trial data for blood pressure modulation in acute ischemic stroke is lacking.
  • Further research is needed to define optimal blood pressure targets and interventions.