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Related Concept Videos

Cardiac Output II: Effect of Stroke Volume on Cardiac Output01:22

Cardiac Output II: Effect of Stroke Volume on Cardiac Output

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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.
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
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Related Experiment Video

Updated: Feb 18, 2026

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects
11:12

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

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Visual field defect after ischemic stroke-impact on mortality.

K M Sand1, H Naess2,3, L Thomassen1,2

  • 1Department of Neurology, Institute for Clinical Medicine, University of Bergen, Bergen, Norway.

Acta Neurologica Scandinavica
|November 18, 2017
PubMed
Summary
This summary is machine-generated.

Visual field defects (VFD) after ischemic stroke significantly increase mortality risk. Addressing VFD is crucial for selecting thrombolysis candidates and guiding rehabilitation.

Keywords:
hemianopiaischemic strokemortalityvisual field defects

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Area of Science:

  • Neurology
  • Ophthalmology
  • Public Health

Background:

  • Visual field defects (VFD) are common after ischemic stroke.
  • The impact of VFD on long-term outcomes, particularly mortality, requires further investigation.

Purpose of the Study:

  • To determine the association between visual field defects (VFD) and mortality in patients following an ischemic stroke.

Main Methods:

  • A cohort study comparing ischemic stroke patients with VFD (n=506) to those with normal visual fields (n=2041) from the NORSTROKE Registry (2006-2013).
  • Mortality data were collected until April 2015.
  • Cox regression analysis was used to adjust for multiple confounding factors.

Main Results:

  • Patients with VFD were older, had higher cardiovascular morbidity, and presented with more severe stroke deficits (higher NIHSS and mRS scores, lower Barthel Index).
  • Kaplan-Meier analysis indicated increased mortality in the VFD group.
  • Adjusted Cox regression revealed a significantly higher hazard ratio for mortality in patients with VFD (HR 1.30, P=0.007).

Conclusions:

  • Visual field defects following ischemic stroke are an independent predictor of increased mortality.
  • Clinical management should consider VFD when deciding on thrombolysis and planning rehabilitation strategies.