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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.
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Cardiac output (CO) is an integral aspect of human physiology, reflecting the heart's efficiency and responsiveness to the body's needs. It represents the volume of blood that the left or right ventricle ejects into the aorta or pulmonary trunk each minute. The CO is calculated by multiplying the heart rate (HR)—the number of heartbeats per minute—by the stroke volume (SV)—the amount of blood pumped out with each heartbeat.
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Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
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Updated: Jan 27, 2026

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke

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[Acute ischaemic stroke - Update].

Mirjam R Heldner1, Johannes Kaesmacher2, Pasquale Mordasini2

  • 11 Departement für Neurologie, Inselspital, Universitätsspital und Universität Bern.

Therapeutische Umschau. Revue Therapeutique
|April 3, 2019
PubMed
Summary
This summary is machine-generated.

Intravenous thrombolysis and endovascular therapy are safe and effective for acute ischemic stroke patients. These treatments can reduce disability rates, even with potential bleeding complications.

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Area of Science:

  • Neurology
  • Cardiovascular Medicine
  • Emergency Medicine

Background:

  • Acute ischemic stroke requires timely intervention to restore blood flow and minimize brain damage.
  • Current treatments include intravenous thrombolysis and endovascular therapy, with ongoing research to optimize their use.

Purpose of the Study:

  • To review the latest evidence on intravenous thrombolysis and endovascular therapy for acute ischemic stroke.
  • To evaluate extended treatment windows and different thrombolytic agents.
  • To assess the impact of anesthesia on endovascular therapy outcomes.

Main Methods:

  • Review of recent clinical studies and trials.
  • Analysis of data concerning treatment efficacy and safety.
  • Comparison of outcomes based on varying treatment parameters and patient selection.

Main Results:

  • Intravenous thrombolysis with rt-PA and tenecteplase are effective within extended time windows (>4.5 hours) and for unknown onset times.
  • Endovascular therapy shows efficacy in treatment windows of >6-24 hours and for unknown onset times.
  • Outcomes are influenced by the choice of anesthesia (general vs. conscious sedation) during endovascular procedures.

Conclusions:

  • Patient selection is crucial for the safety and efficacy of thrombolysis and endovascular therapy in acute ischemic stroke.
  • Despite bleeding risks, these interventions can significantly lower disability rates.
  • Further research is refining treatment protocols for improved patient outcomes.