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Ischemic Stroke ll: Pathophysiology

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...

Ischemic Stroke l: Introduction

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.

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Monitoring Astrocyte Reactivity and Proliferation in Vitro Under Ischemic-Like Conditions

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Pituitary function and IGF-I levels following ischemic stroke.

Sandra Boehncke¹, Hanns Ackermann, Klaus Badenhoop

¹Department of Internal Medicine 1, Division of Endocrinology, Diabetes and Metabolism, Stroke Unit, J.W. Goethe University, Frankfurt/M., Germany. Sandra.Boehncke@kgu.de

Cerebrovascular Diseases (Basel, Switzerland)

|December 8, 2010

Summary

This summary is machine-generated.

Ischemic stroke can cause pituitary dysfunction, particularly impaired growth hormone response and secondary adrenal failure. Post-stroke patients should be screened for pituitary issues to ensure comprehensive care.

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Area of Science:

Neuroendocrinology
Stroke Medicine
Neurology

Background:

Pituitary dysfunction is a recognized complication of traumatic brain injury and subarachnoid hemorrhage.
Limited data exist on pituitary dysfunction following ischemic stroke.

Purpose of the Study:

To investigate the prevalence of pituitary dysfunction in patients after ischemic stroke.
To assess stroke severity, patient outcomes, and the incidence of anxiety and depression in this cohort.

Main Methods:

Prospective study of patients 66-274 days post-ischemic stroke.
Pituitary function evaluated using combined releasing hormone testing (GHRH, CRH).
Stroke severity assessed by NIHSS (National Institute of Health Stroke Scale); outcomes and psychological status were also evaluated.

Main Results:

82% of patients exhibited some degree of pituitary dysfunction.
Predominant dysfunctions included impaired growth hormone response (79.5%) and secondary adrenal failure (14.6%).
Abnormal anxiety and depression were observed in 28.3% and 32.7% of patients, respectively. Neurological deficit improvement correlated with baseline NIHSS, not pituitary function.

Conclusions:

Ischemic stroke can lead to pituitary dysfunction, notably impaired growth hormone response and secondary adrenal failure.
Routine pituitary testing is recommended for patients who have experienced a stroke.