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Related Concept Videos

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Coronary Circulation01:21

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The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
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Antianginal Drugs: Calcium Channel Blockers and Ranolazine01:25

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Angina pectoris, a primary symptom of ischemic heart disease, requires careful pharmacological interventions. In this context, calcium channel blockers (CCBs) and ranolazine have emerged as crucial pharmacotherapeutic agents, providing deep insights into the complexities of angina management.
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Antihypertensive Drugs: Action of Calcium Channel Blockers01:18

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Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
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Imbalances in Cardiac Output01:23

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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
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Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
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Related Experiment Video

Updated: May 12, 2025

Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders
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Intracoronary Acetylcholine Provocation Testing for Assessment of Coronary Vasomotor Disorders

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Multivessel Coronary Artery Spasm.

Mohammad Ahmed1, Muhammad Soofi1, Maulin Patel1

  • 1Penn State Heart and Vascular Institute, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA.

JACC. Case Reports
|May 9, 2025
PubMed
Summary
This summary is machine-generated.

Coronary artery spasm (CAS) can cause recurrent cardiac arrest. A left stellate ganglion block effectively treated a severe multivessel CAS case refractory to medical therapy.

Keywords:
Prinzmetal anginacardiac arrestcoronary artery spasmcoronary vasospasm

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Area of Science:

  • Cardiology
  • Vascular Medicine
  • Neurology

Background:

  • Coronary artery spasm (CAS) involves reversible narrowing of coronary arteries due to smooth muscle hypercontractility.
  • Recurrent cardiac arrest is a critical condition often requiring advanced interventions.

Observation:

  • A 47-year-old woman with a history of cardiac arrests presented after experiencing multiple life-threatening events.
  • She required defibrillator shocks and extracorporeal membrane oxygenation due to hemodynamic instability.
  • Coronary angiography revealed severe multivessel CAS, which responded to intracoronary nitroglycerin.

Findings:

  • The patient's severe multivessel CAS was successfully treated with intracoronary nitroglycerin.
  • A left stellate ganglion block was performed, leading to the patient's recovery and decannulation.
  • She was discharged on oral vasodilators for management of recurrent CAS.

Implications:

  • Multivessel coronary artery spasm leading to cardiac arrest is a rare but serious clinical presentation.
  • Left stellate ganglion block offers a potential therapeutic option for refractory CAS.
  • This case highlights the importance of considering CAS in patients with recurrent unexplained cardiac arrest.