The carotid artery and stroke

D G Sherman1

  • 1Division of Neurology, University of Texas Health Science Center, San Antonio.

American Family Physician
|November 1, 1989
PubMed

Insights

Carotid artery atherosclerosis is a major stroke cause. Treatment decisions for carotid stenosis depend on symptoms, severity, and lesion characteristics, balancing surgery against risk factor management and antithrombotic therapy.

Area of Science:

  • Neurology
  • Vascular Medicine
  • Cardiovascular Science

Background:

  • Carotid artery atherosclerosis is a primary cause of stroke.
  • Other stroke causes include cardiac emboli and intracranial arterial disease.

Purpose of the Study:

  • To outline the diagnostic and therapeutic considerations for carotid artery stenosis.
  • To identify patient subgroups who may benefit from carotid endarterectomy versus medical management.

Main Methods:

  • Review of clinical guidelines and evidence for carotid artery stenosis management.
  • Analysis of patient criteria for surgical intervention (e.g., symptomatic stenosis >75%, ulcerated lesions).
  • Emphasis on risk factor modification and antithrombotic therapy for asymptomatic cases.

Main Results:

  • Symptomatic patients with severe carotid stenosis (≥75%) are candidates for carotid endarterectomy.
  • Ulcerated or less stenotic lesions unresponsive to medical therapy may also warrant consideration for surgery.
  • Asymptomatic carotid stenosis management primarily involves antithrombotic therapy and risk factor control.

Conclusions:

  • Carotid endarterectomy is indicated for specific symptomatic severe carotid stenosis.
  • Medical management, including antithrombotics and risk factor control, is the mainstay for asymptomatic carotid stenosis.
  • Comprehensive evaluation for all potential stroke mechanisms is crucial in patients presenting with transient ischemic attacks or stroke.

Related Concept Videos

The Arch of Aorta01:10

The Arch of Aorta

The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...
Arteries of the Head and Neck01:26

Arteries of the Head and Neck

The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
Atherosclerosis IV: Nursing Management01:23

Atherosclerosis IV: Nursing Management

Nursing management for a patient with arteriosclerosis involves a comprehensive approach focusing on lifestyle modification, disease monitoring, education, and symptomatic care. Here is an overview of effective nursing strategies:Assessment and Monitoring: Initial and ongoing assessments are crucial. Nurses must document the patient's medical history, including any hypertension, diabetes, hyperlipidemia, and other cardiovascular diseases. Assessments also cover family history and lifestyle...
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
Ischemic Stroke l: Introduction01:15

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.
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...