A nurse and a newly licensed nurse are providing care for a client who has distributive shock. How should the nurse explain the pathophysiology of distributive shock to the newly licensed nurse?
"Distributive shock occurs due to loss of myocardial contractility."
"Distributive shock occurs due to loss of blood volume."
"Distributive shock occurs due to systemic vasodilation."
"Distributive shock occurs due to increased systemic vascular resistance."
The Correct Answer is C
A. "Distributive shock occurs due to loss of myocardial contractility": This statement is incorrect. Distributive shock is not primarily caused by loss of myocardial contractility. Instead, distributive shock is characterized by widespread vasodilation, which leads to inadequate tissue perfusion despite normal or high cardiac output.
B. "Distributive shock occurs due to loss of blood volume": This statement is inaccurate. Distributive shock is not primarily caused by loss of blood volume. While hypovolemia (loss of blood volume) can lead to shock, distributive shock specifically involves excessive vasodilation, resulting in a relative hypovolemia due to pooling of blood in the expanded vascular bed.
C. "Distributive shock occurs due to systemic vasodilation": This statement is correct. Distributive shock, also known as vasodilatory shock, occurs due to widespread vasodilation of the systemic vasculature. This vasodilation leads to a decrease in systemic vascular resistance, which results in the redistribution of blood flow away from vital organs and tissues, leading to inadequate tissue perfusion and shock.
D. "Distributive shock occurs due to increased systemic vascular resistance": This statement is incorrect. Distributive shock is characterized by decreased systemic vascular resistance due to vasodilation, not increased systemic vascular resistance. Increased systemic vascular resistance is more commonly associated with conditions such as hypertension or obstructive shock.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Pericardiocentesis: Pericardiocentesis is a procedure used to drain fluid from the pericardial sac, typically performed in cases of pericardial effusion or cardiac tamponade. It is not indicated for the treatment of hypertrophic cardiomyopathy (HCM), which involves structural abnormalities of the heart muscle rather than pericardial fluid accumulation.
B. Septal myectomy: Septal myectomy is a surgical procedure performed to treat hypertrophic obstructive cardiomyopathy (HOCM), a subtype of hypertrophic cardiomyopathy characterized by thickening of the interventricular septum and dynamic left ventricular outflow tract obstruction. Septal myectomy involves the surgical removal of a portion of the hypertrophied septum to relieve left ventricular outflow tract obstruction and improve symptoms.
C. Pericardial window: A pericardial window is a surgical procedure used to create a communication between the pericardial sac and the pleural space, typically performed in cases of recurrent pericardial effusion or tamponade to prevent fluid re-accumulation. It is not indicated for the treatment of hypertrophic cardiomyopathy.
D. Synchronized electrical cardioversion: Synchronized electrical cardioversion is a procedure used to restore normal sinus rhythm in patients with certain types of cardiac arrhythmias, such as atrial fibrillation or atrial flutter. It is not typically indicated for the treatment of hypertrophic cardiomyopathy, although patients with HCM may develop arrhythmias as a complication.
Correct Answer is B
Explanation
A. Severe myopia: Severe myopia, or nearsightedness, is not a typical manifestation of Meniere's disease. Meniere's disease primarily affects the inner ear and is characterized by symptoms related to balance and hearing rather than vision.
B. Vertigo: Meniere's disease is a disorder of the inner ear that causes episodes of vertigo, which is a sensation of spinning or dizziness. Vertigo is a hallmark symptom of Meniere's disease and is often accompanied by nausea, vomiting, and a feeling of fullness or pressure in the affected ear.
C. Anosmia: Anosmia refers to a loss of the sense of smell and is not typically associated with Meniere's disease. Meniere's disease primarily affects the vestibular system (balance) and auditory system (hearing) rather than the sense of smell.
D. Photopsia: Photopsia refers to the perception of flashes of light in the visual field and is not a typical manifestation of Meniere's disease. Meniere's disease primarily affects the inner ear and is not directly related to visual disturbances.
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