What is the definition of aortic stenosis?
A. Aortic stenosis is a congenital abnormality that occurs predominantly in infants and children. B. Most cases of aortic stenosis in older adults result from fibrosis and calcification of normal three cusp aortic valve. C.
What causes most cases of aortic stenosis in older adults?
Most cases of aortic stenosis in older adults result from fibrosis and calcification of normal three cusp aortic valve. Aortic stenosis is a congenital abnormality that occurs predominantly in infants and children. True or false?
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What is the treatment of choice for aortic stenosis?
Aortic valve replacement is often needed to treat aortic valve stenosis. In aortic valve replacement, your surgeon removes the damaged valve and replaces it with a mechanical valve or a valve made from cow, pig or human heart tissue (biological tissue valve).
What medications should be avoided with aortic stenosis?
Antihypertensive treatment with β-blockers has generally been avoided in patients with severe aortic stenosis (AS) due to the concerns for inducing left ventricular dysfunction and hemodynamic compromise in the presence of severe outflow tract obstruction.
Can aortic stenosis be treated with medication?
Medications. No pill can cure or even improve your aortic stenosis.
Why are vasodilators contraindicated in aortic stenosis?
Background: Vasodilators are considered to be contraindicated in patients with severe aortic stenosis because of concern that they may precipitate life-threatening hypotension. However, vasodilators such as nitroprusside may improve myocardial performance if peripheral vasoconstriction is contributing to afterload.
Can you give beta blockers in aortic stenosis?
β‐Blockers may be used if patients develop arrhythmias and may be the drug of choice if patients with aortic stenosis develop hypertension.
Are diuretics contraindicated in aortic stenosis?
Diuretics may relieve the symptoms of pulmonary congestion but it is important to appreciate that patients with severe aortic stenosis are dependent on adequate filling pressures and excessive diuretic treatment may be hazardous.
Are ACE inhibitors contraindicated in aortic stenosis?
Conventionally angiotensin-converting enzyme (ACE) inhibitors are contraindicated in patients with aortic stenosis.
Why are nitrates not given in aortic stenosis?
Nitrates are contraindicated in severe aortic stenosis because of the theoretical yet unproven risk of precipitating profound hypotension.
Can you give digoxin in aortic stenosis?
Patients with aortic stenosis who are not candidates for surgery and present with pulmonary congestion may be treated with digoxin. Digoxin can also be used as an inotropic agent to control the ventricular rate in patients with atrial fibrillation.
Is dobutamine contraindicated in aortic stenosis?
The medication is contraindicated in patients with acute myocardial infarction, unstable angina, left main stem disease, severe hypertension, arrhythmias, acute myocarditis or pericarditis, hypokalemia and idiopathic hypertrophic sub-aortic stenosis.
Why is afterload reduction contraindicated in aortic stenosis?
Traditionally, antihypertensive agents were considered contraindicated in AS. The rationale was that any reduction in postvalvular cardiac afterload and systemic vascular resistance could cause severe diastolic hypotension, resulting in decreased myocardial perfusion and imbalance in myocardial supply and demand.
Is metoprolol good for aortic stenosis?
Metoprolol Reduces Hemodynamic and Metabolic Overload in Asymptomatic Aortic Valve Stenosis Patients.
What causes aortic stenosis in older adults?
Most cases of aortic stenosis in older adults result from fibrosis and calcification of normal three cusp aortic valve. C. The same risk factors that predispose to coronary artery disease may also promote the degenerative changes in the aortic valve responsible for the valve fibrosis and calcification.
Which dissection extends the entire length of the artery?
D. Aortic wall dissection may extend the entire length of the artery.
Which sac impairs filling in diastole?
B. Compression of the heart by the blood on the pericardial sac, which impairs filling in diastole
What is the term for a condition that might result from reperfusion edema following bypass surgery?
a condition which might result from reperfusion edema following bypass surgery, causing ischemia due to compression, and which might call for treatment by fasciotomy is called
What is the diameter of a patient's abdominal aorta?
your measurement of a patient's abdominal aorta gives a diameter of 6.5. The probable management of this patient would involve
Why are prerupture AAAs discovered?
most prerupture AAAs are discovered because of abdominal symptoms or distal emboli. the risk of claudication id diabetic patients is. greater than 4 times the risk in the general population. select the entity that is NOT a risk factor in peripheral arterial occlusive diesease. hypolipidemia.
What are the symptoms of arterial occlusion?
the most common presenting symptoms in acute arterial occlusion include. paralysis, pulselessness, pallor, paresthesias. patients with advanced peripheral arterial vascular occlusive disease exhibit which of the following skin changes. shiny, scaly skin, dependent rubor, pallor on elevation.
What is the vascular disease that presents as back, abdominal, of flank pain?
hypolipidemia. the vascular disease that presents as back, abdominal, of flank pain is. abdominal aortic aneurysm. Takaysau's arteritis is most often found in. young women. common signs of advanced arterial insufficiency of the lower extremity include.
Can a Doppler beam be attenuated?
the doppler beam may be attenuated if. the sound beam must pass through scar tissue, a hematoma, or excessive fat and the vessel has calcific plaque on the anterior wall. with severe lower extremity arterial occlusive disease, the doppler waveforms distally.
Does pulse volume show dicrotic notch?
pulse volume recordings demonstrate a lack of dicro tic notch in the recordings at the high, decreased pulses at the upper calf, and flat tracings at the ankle. The most likely interpretation of this study is
What causes aortic stenosis in older adults?
Most cases of aortic stenosis in older adults result from fibrosis and calcification of normal three cusp aortic valve.
Why is a bicuspid valve susceptible to fibrosis?
Persons with a bicuspid aortic valve are susceptible to fibrosis and calcification of the valve because of the unusual stresses placed on the valve caused by its bicuspid configuration. Most cases of aortic stenosis in older adults result from fibrosis and calcification of normal three cusp aortic valve.
What happens if an atheromatous plaque ruptures?
An unstable atheromatous plaque may rupture and discharge atheromatous debris into the lumen of a coronary artery.
What is the best way to restore blood flow to the heart muscle?
Administration of drugs to dissolve a thrombosis that plugs a coronary artery (thrombolytic therapy) is a more effective method of restoring blood flow to the heart muscle than is coronary angioplasty.
How long does aspirin affect platelets?
The effect of aspirin on platelet function persists for the entire 10-day life span of the platelets.
What is the term for the acute process of heart muscle degeneration?
a. atherosclerosis is acute process of heart muscle degeneration
How long can cardiac cells stand ischemic conditions?
a. cardiac cells can w/stand ischemic conditions for about 60mins