A nurse assesses a blowing, swooshing sound at the cardiac apex in a client with a history of rheumatic fever. What should the nurse conclude from this finding?
There is a narrowed or incompetent heart valve
Cardiac output is abnormally low
The left atrium is mildly enlarged
The client has increased pulmonary artery pressure
The Correct Answer is A
Choice A reason: A blowing or swooshing sound is the classic description of a heart murmur, which indicates turbulent blood flow. In a client with a history of rheumatic fever, this is frequently caused by mitral regurgitation (an incompetent valve) or mitral stenosis (a narrowed valve) resulting from chronic valvular scarring.
Choice B reason: While valvular dysfunction can eventually lead to heart failure and reduced cardiac output, the sound itself does not quantify the volume of blood pumped per minute. Assessing cardiac output requires more invasive monitoring or echocardiographic measurements of stroke volume and heart rate, rather than simple auscultation of a murmur.
Choice C reason: Left atrial enlargement is a common secondary consequence of mitral valve disease, especially mitral stenosis. However, the blowing sound heard during auscultation is the direct acoustic representation of the valvular defect itself (the turbulence), not the structural size of the atrium, which is better visualized through an echocardiogram.
Choice D reason: Increased pulmonary artery pressure, or pulmonary hypertension, typically manifests as a loud or accentuated S2 heart sound (specifically the P2 component). While severe mitral valve disease can lead to pulmonary hypertension over time, the "blowing, swooshing" sound at the apex specifically identifies the valvular turbulence rather than the pressure dynamics.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Assessment of thoracic excursion or chest expansion is a vital part of the respiratory exam. The nurse should feel the hands move apart symmetrically as the client inhales deeply. This indicates that the musculoskeletal structures, the pleural membranes, and the underlying lung parenchyma are expanding uniformly on both the left and right sides of the thorax.
Choice B reason: Pain during expansion, or pleuritic pain, is a pathological finding that suggests inflammation of the parietal pleura. A student or new nurse should recognize that a normal assessment is painless. Feeling pain during this maneuver indicates a need for further investigation into conditions such as pleurisy, pulmonary embolism, or rib fractures.
Choice C reason: Crepitus is a tactile "crunching" or "popping" sensation caused by air trapped in the subcutaneous tissues, often referred to as subcutaneous emphysema. While this is an important finding to document if present, it is an abnormal condition resulting from trauma or air leaks and is not a feature of a normal respiratory assessment.
Choice D reason: A total lack of movement of the rib cage during deep inspiration would indicate severe respiratory compromise, such as neuromuscular paralysis or advanced restrictive lung disease. The goal of the assessment is to quantify the degree and symmetry of movement; therefore, "no movement" would be a critical clinical finding rather than an expected result.
Correct Answer is D
Explanation
Choice A reason: Increasing Low-Density Lipoprotein (LDL) levels is detrimental to cardiovascular health, as LDL is the primary carrier of cholesterol that contributes to plaque formation. Effective weight management aims to decrease LDL and increase High-Density Lipoprotein (HDL) to minimize the risk of atherosclerosis and subsequent coronary artery disease.
Choice B reason: Weight management does not reduce the need for physical activity; rather, regular exercise is a fundamental component of maintaining a healthy weight. Suggesting that weight loss negates the need for activity is medically inaccurate and counterproductive to improving overall cardiovascular endurance and metabolic efficiency.
Choice C reason: Promoting the buildup of fatty deposits, or atherogenesis, is the primary mechanism of heart disease. Weight management is intended to prevent this process by reducing circulating triglycerides and cholesterol, thereby maintaining the patency of the coronary arteries and ensuring adequate myocardial perfusion and oxygenation.
Choice D reason: Reduction in adipose tissue leads to decreased systemic vascular resistance and lower circulating blood volume, which directly reduces blood pressure. This alleviation of afterload decreases the workload and oxygen demand of the myocardium, effectively reducing heart strain and the risk of developing hypertensive heart disease.
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