00:00 / 00:00
Bundle branch block
Pulseless electrical activity
Atrioventricular nodal reentrant tachycardia (AVNRT)
Premature atrial contraction
Long QT syndrome and Torsade de pointes
Premature ventricular contraction
Rheumatic heart disease
Atrial septal defect
Coarctation of the aorta
Patent ductus arteriosus
Ventricular septal defect
Hypoplastic left heart syndrome
Tetralogy of Fallot
Total anomalous pulmonary venous return
Transposition of the great vessels
Pericarditis and pericardial effusion
Aortic valve disease
Mitral valve disease
Pulmonary valve disease
Tricuspid valve disease
Coronary steal syndrome
Polycystic kidney disease
Renal artery stenosis
Peripheral artery disease
Subclavian steal syndrome
Superior mesenteric artery syndrome
Human herpesvirus 8 (Kaposi sarcoma)
Chronic venous insufficiency
Deep vein thrombosis
Acyanotic congenital heart defects: Pathology review
Aortic dissections and aneurysms: Pathology review
Atherosclerosis and arteriosclerosis: Pathology review
Cardiac and vascular tumors: Pathology review
Cardiomyopathies: Pathology review
Coronary artery disease: Pathology review
Cyanotic congenital heart defects: Pathology review
Dyslipidemias: Pathology review
Endocarditis: Pathology review
Heart blocks: Pathology review
Heart failure: Pathology review
Hypertension: Pathology review
Pericardial disease: Pathology review
Peripheral artery disease: Pathology review
Shock: Pathology review
Supraventricular arrhythmias: Pathology review
Valvular heart disease: Pathology review
Vasculitis: Pathology review
Ventricular arrhythmias: Pathology review
0 / 5 complete
0 / 1 complete
for coronary steal syndrome p. 308
coronary steal syndrome p. 308
Coronary steal syndrome is a condition that occurs due to dilation of coronary arteries in the presence of coronary artery disease, which is when there’s a partial or complete blockage in the lumen of another coronary artery.
The result is a redirection of blood flow from heart muscle supplied by the blocked artery, to other regions of the heart.
Coronary steal syndrome is a finding observed during a pharmacological cardiac stress test, which is used to diagnose coronary artery disease.
Now, the heart pumps out blood for all of our organs and tissues to use - but the heart also needs blood.
So it also pumps blood to itself, through the coronary arteries on the outside of the heart.
And coronary arteries are linked to one another through teeny tiny blood vessels called collateral vessels, which are normally in an inactive state, meaning blood doesn’t flow through them.
Now, with coronary artery disease, there’s ischemia, or reduced blood flow to the region of myocardium supplied by that artery.
In this context, collateral circulation may become active. For example, let’s say two coronary arteries,
A and B, are linked by a collateral vessel, and coronary artery B has developed a block.
As a result of ischemia, in the myocardium supplied by coronary artery B, the myocardial cells don’t receive enough oxygen, which is called hypoxia.
In response to hypoxia, myocardial cells release signalling molecules called cytokines, which cause dilation of the segment of coronary artery B beyond the blockage.
Latest on COVID-19
Nurse Practitioner (NP)
Physician Assistant (PA)
Create custom content
Raise the Line Podcast
Copyright © 2024 Elsevier, its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Cookies are used by this site.
Terms and Conditions
USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.