A nurse is assessing a client who has tension pneumothorax. Which of the following findings should the nurse expect following tracheal deviation?
Respiratory alkalosis
Increased venous return
Decreased cardiac output
Dilated ventricles
The Correct Answer is C
Choice A Reason:
Respiratory alkalosis is incorrect. Tension pneumothorax typically leads to respiratory distress and hypoxemia rather than respiratory alkalosis. The respiratory alkalosis may occur initially due to hyperventilation in response to hypoxemia but would not be directly related to tracheal deviation.
Choice B Reason:
Increased venous return is incorrect. Tension pneumothorax actually leads to decreased venous return due to compression of the great vessels in the thorax, particularly the superior vena cava and the inferior vena cava. This compression results from the increased pressure within the thorax, which impedes blood flow back to the heart.
Choice C Reason:
Decreased cardiac output is incorrect. Tension pneumothorax can indeed lead to decreased cardiac output due to compression of the heart and the great vessels by the accumulating air in the pleural space. This compression decreases venous return and impairs cardiac function.
Choice D Reason:
Dilated ventricles is incorrect. As mentioned earlier, tension pneumothorax can lead to compression of the heart, including the ventricles. This compression can cause dilatation of the ventricles, particularly the right ventricle, due to increased afterload and decreased venous return.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A Reason:
Myelogram is not appropriate. This imaging test involves injecting contrast dye into the spinal canal to visualize the spinal cord and nerve roots. While it may help identify certain spinal cord abnormalities, it is not typically used as a primary diagnostic tool for multiple sclerosis.
Choice B Reason:
Brain natriuretic peptide (BNP) is not appropriate. This blood test measures the level of BNP, a hormone produced by the heart, which can be elevated in conditions such as heart failure. It is not used in the diagnosis of multiple sclerosis.
Choice C Reason:
Troponin level is not appropriate. Troponin is a protein released into the bloodstream during a heart attack or other heart-related conditions. This test is used to diagnose heart muscle damage and is not relevant to the diagnosis of multiple sclerosis.
Choice D Reason:
Lumbar puncture is appropriate. Also known as a spinal tap, a lumbar puncture involves collecting cerebrospinal fluid (CSF) from the spinal canal for analysis. In the diagnosis of multiple sclerosis, analysis of CSF can help identify certain abnormalities, such as an elevated level of immunoglobulin G (IgG) or the presence of oligoclonal bands, which are often indicative of inflammation in the central nervous system. Therefore, a lumbar puncture is commonly ordered to assist with the diagnosis of multiple sclerosis.
Correct Answer is ["B","D","E"]
Explanation
Choice A Reason:
Metoprolol is incorrect. Metoprolol is a beta-blocker medication commonly used to treat conditions such as hypertension, angina, and heart failure. However, in the context of neurogenic shock following a spinal cord injury, the use of beta-blockers such as metoprolol is generally contraindicated. Beta-blockers antagonize the effects of sympathetic activation, leading to a reduction in heart rate and myocardial contractility, which can exacerbate hypotension and bradycardia, the hallmarks of neurogenic shock. Therefore, the nurse would not anticipate a prescription for metoprolol in the management of neurogenic shock.
Choice B Reason:
Lactated Ringers intravenous fluid is correct. Fluid resuscitation with isotonic crystalloid solutions such as lactated Ringers is essential to restore intravascular volume and improve perfusion.
Choice C Reason:
Furosemide is incorrect. Furosemide is a loop diuretic medication commonly used to treat conditions such as heart failure, edema, and hypertension by promoting diuresis and reducing fluid volume. However, in the context of neurogenic shock, the use of diuretics such as furosemide is generally not indicated unless there is concurrent volume overload. Neurogenic shock is characterized by hypotension due to vasodilation and decreased systemic vascular resistance, often leading to relative hypovolemia rather than volume overload. Therefore, administering furosemide could further decrease intravascular volume, exacerbating hypotension and compromising perfusion. As a result, the nurse would not anticipate a prescription for furosemide in the management of neurogenic shock.:
Choice D Reason:
Dopamine is correct. Dopamine is a vasopressor medication that acts to increase vascular tone and blood pressure by stimulating alpha-adrenergic receptors. It is commonly used in the management of neurogenic shock to augment blood pressure.
Choice E Reason:
Epinephrine is correct. Epinephrine is a potent vasopressor that acts on both alpha and beta-adrenergic receptors, leading to vasoconstriction and increased cardiac output. It is used in the treatment of refractory hypotension in neurogenic shock.
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