A nurse is assessing the respiratory pattern of an older adult client who is receiving end-of-life care.
Which of the following assessment findings should the nurse identify as Cheyne-Stokes respirations?
Rapid respirations that are unusually deep and regular.
Breathing ranging from very deep to very shallow with periods of apnea.
Shallow to normal breaths alternating with periods of apnea.
An inability to breathe without dyspnea unless sitting upright.
The Correct Answer is B
Assessment of respiratory patterns in terminal patients involves identifying neurological and metabolic shifts. This scenario requires knowledge of breathing cycles, specifically the crescendo-decrescendo pattern and apnea associated with brainstem dysfunction or advanced heart failure during end-of-life care.
Choice A rationale
Kussmaul respirations involve deep, rapid breathing typically seen in metabolic acidosis. This pattern is a compensatory mechanism to expel excess carbon dioxide, lowering arterial acidity, and is distinct from the cyclic apnea seen in terminal brain injury.
Choice B rationale
Cheyne-Stokes is characterized by rhythmic waxing and waning of breathing depth followed by apnea. It occurs due to delayed feedback in the respiratory center, often seen in stroke, traumatic brain injury, or profound heart failure.
Choice C rationale
Biot respirations involve clusters of shallow breaths followed by irregular periods of apnea. This occurs with damage to the medulla oblongata and lacks the rhythmic, gradual increase and decrease in depth seen in the Cheyne-Stokes pattern.
Choice D rationale
Orthopnea is the physical inability to breathe comfortably while lying flat. It is common in congestive heart failure and pulmonary edema, requiring the patient to sit upright to decrease venous return and improve diaphragmatic excursion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
This scenario requires the application of therapeutic communication principles, specifically validation. Validating feelings involves acknowledging the client's emotional state without dismissing it. Nurses must distinguish between open-ended exploration, false reassurance, and self-disclosure to effectively support patients experiencing acute psychological distress.
Choice A rationale
Validation occurs when the nurse acknowledges the client's subjective experience. Myocardial infarction triggers significant anxiety regarding mortality. Acknowledging that the situation is frightening provides empathy and validates the client's feelings without being dismissive or providing false reassurance.
Choice B rationale
Asking why is often perceived as accusatory and may put the client on the defensive. It requires the client to analyze their emotions logically during a crisis, which can block further therapeutic communication and effective emotional expression.
Choice C rationale
This statement provides false reassurance. In a clinical setting, nurses cannot guarantee specific outcomes. This approach shuts down the client's expression of fear by shifting the focus to clinical actions rather than acknowledging the emotional reality.
Choice D rationale
This is an example of self-disclosure. By focusing on the nurse's own hypothetical feelings, the conversation shifts away from the client. Therapeutic communication must remain client-centered rather than focusing on the nurse's personal perspectives or reactions.
Correct Answer is B
Explanation
Managing hepatic encephalopathy requires understanding the biochemical role of ammonia in brain toxicity. Knowledge of the enterohepatic circulation and the pharmacological action of osmotic laxatives is necessary to facilitate the excretion of nitrogenous wastes and improve neurological status.
Choice A rationale
Loop diuretics are used to treat ascites or edema but do not directly lower serum ammonia. Excessive diuresis can actually trigger hepatic encephalopathy by causing dehydration and electrolyte imbalances, such as hypokalemia, which increases renal ammonia production and toxicity.
Choice B rationale
Lactulose is a disaccharide that acidifies the colon, converting ammonia into non-absorbable ammonium ions. This osmotic effect also promotes bowel movements, facilitating the rapid excretion of these toxins from the gut, thereby reducing blood ammonia levels and confusion.
Choice C rationale
Restricting fluids does not lower ammonia and can worsen hepatic encephalopathy by causing dehydration and constipation. Adequate hydration and bowel motility are necessary to ensure that nitrogenous wastes are flushed from the gastrointestinal tract effectively to prevent systemic accumulation.
Choice D rationale
Protein breakdown in the gut by bacteria produces ammonia. Increasing protein intake in a client with end stage cirrhosis would likely worsen encephalopathy by providing more nitrogenous substrate for ammonia synthesis, further elevating toxic levels in the blood.
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