A nurse is teaching several newly licensed nurses about cardiac valve replacement. Which of the following should the nurse include in the teaching?
The aortic and mitral valves are the most commonly replaced valves.
Mitral valve insufficiency occurs during the diastolic phase of the cardiac cycle.
Inadequate closure of the tricuspid valve causes overload in the left ventricle.
Aortic stenosis increases right ventricular systolic pressure and decreases afterload.
The Correct Answer is A
A. The aortic and mitral valves are the most commonly replaced valves: This statement is accurate. The aortic and mitral valves are indeed the most commonly replaced valves in cardiac valve replacement surgeries. Aortic valve replacement is commonly performed for conditions such as aortic stenosis or regurgitation, while mitral valve replacement is often indicated for mitral regurgitation or stenosis.
B. Mitral valve insufficiency occurs during the diastolic phase of the cardiac cycle: This statement is incorrect. Mitral valve insufficiency, also known as mitral regurgitation, occurs during the systolic phase of the cardiac cycle. It involves the backflow of blood from the left ventricle into the left atrium during ventricular systole, leading to volume overload of the left atrium and potentially causing symptoms such as dyspnea and fatigue.
C. Inadequate closure of the tricuspid valve causes overload in the left ventricle: This statement is incorrect. Inadequate closure of the tricuspid valve leads to regurgitation of blood from the right ventricle back into the right atrium during ventricular systole. This condition, known as tricuspid regurgitation, causes volume overload in the right atrium and ventricle, rather than overload in the left ventricle.
D. Aortic stenosis increases right ventricular systolic pressure and decreases afterload: This statement is partially correct. Aortic stenosis indeed increases left ventricular systolic pressure and decreases afterload, not right ventricular pressure. The increased afterload on the left ventricle can lead to left ventricular hypertrophy and eventually heart failure. However, aortic stenosis does not directly affect right ventricular systolic pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Myopia: Myopia refers to nearsightedness, which is caused by refractive errors in the eye and is not associated with Meniere's disease. Myopia results in difficulty seeing distant objects clearly.
B. Vertigo: Vertigo is a hallmark symptom of Meniere's disease and is caused by an excessive accumulation of endolymph fluid in the inner ear. Vertigo presents as a sensation of spinning or dizziness, often accompanied by nausea, vomiting, and imbalance.
C. Photophobia: Photophobia refers to sensitivity to light, which can be associated with various eye conditions but is not a typical manifestation of Meniere's disease. Photophobia may occur in conditions such as migraine headaches or certain eye infections.
D. Presbycusis: Presbycusis refers to age-related hearing loss, which typically occurs gradually over time and is not directly associated with Meniere's disease. Meniere's disease is characterized by sudden episodes of vertigo, hearing loss, tinnitus, and a sensation of fullness or pressure in the ear.
Correct Answer is ["A","B","C","D"]
Explanation
All of the following should be included in the teaching:
A. Living a sedentary lifestyle: Sedentary behavior, characterized by physical inactivity, is a risk factor for various cardiovascular conditions, including atrial fibrillation. Regular exercise is important for maintaining heart health and reducing the risk of atrial fibrillation.
B. Family history of atrial fibrillation: A family history of atrial fibrillation increases an individual's risk of developing the condition. Genetic factors play a role in predisposing individuals to atrial fibrillation, and having a close relative with the condition can elevate one's risk.
C. History of thyroid disease: Thyroid disorders, particularly hyperthyroidism (overactive thyroid), are associated with an increased risk of atrial fibrillation. Thyroid hormones influence heart rate and rhythm, and imbalances can predispose individuals to atrial fibrillation.
D. Recent influenza infection: Infections, particularly respiratory infections such as influenza, can trigger episodes of atrial fibrillation in susceptible individuals. The inflammatory response and physiological stress associated with infections can disrupt normal heart rhythm and precipitate atrial fibrillation episodes.
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