A nurse is reviewing the EKG strip of a client who has prolonged vomiting. Which of the following abnormalities on the client's EKG should the nurse interpret as a sign of hypokalemia?
Inverted P wave
Wide ORS
Elevated ST segment
Abnormally prominent U wave
The Correct Answer is D
A. Inverted P wave: An inverted P wave may indicate atrial depolarization abnormalities but is not typically associated with hypokalemia. It can be seen in conditions such as atrial enlargement or atrial ischemia. However, in hypokalemia, the P wave may become flattened or have a decreased amplitude, but it is less likely to be inverted.
B. Wide QRS: A wide QRS complex may indicate conduction abnormalities or bundle branch blocks, but it is not specifically associated with hypokalemia. Wide QRS complexes are more commonly seen in conditions such as bundle branch blocks or electrolyte imbalances like hyperkalemia. Hypokalemia tends to cause a prolongation of the QT interval rather than widening of the QRS complex.
C. Elevated ST segment: An elevated ST segment is typically associated with myocardial injury or infarction, not hypokalemia. It can be indicative of conditions such as myocardial ischemia or pericarditis. In hypokalemia, ST segment changes are more likely to be flattened or depressed rather than elevated.
D. Abnormally prominent U wave: An abnormally prominent U wave is a classic EKG finding in hypokalemia. Hypokalemia prolongs the repolarization phase of the cardiac action potential, leading to the appearance of U waves following the T wave. These U waves can become more pronounced as potassium levels decrease. Therefore, an abnormally prominent U wave is a significant indicator of hypokalemia on an EKG, especially in a patient with prolonged vomiting, which can lead to potassium depletion. Thus, it is the most pertinent abnormality to interpret in this context.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Black-colored stools: Black-colored stools are not an expected side effect of IV rifampin. Black stools can result from gastrointestinal bleeding or the consumption of certain foods or medications, but they are not directly related to rifampin administration.
B. Staining of teeth: Staining of teeth, often described as orange or red discoloration, is a well-known side effect of rifampin when taken orally. However, this side effect is typically associated with long-term oral use rather than IV administration. IV rifampin is not expected to cause staining of teeth.
C. Red-colored urine: Rifampin can cause red-orange discoloration of bodily fluids, including urine, sweat, saliva, and tears. This phenomenon is harmless and reversible but can be alarming to patients. It is important to educate clients about this potential side effect to alleviate concerns.
D. Constipation: Constipation is not a common side effect of rifampin. While gastrointestinal disturbances such as nausea, vomiting, and diarrhea can occur with rifampin therapy, constipation is not typically reported. If a client experiences persistent constipation while taking rifampin, other factors should be considered and evaluated.
Correct Answer is D
Explanation
A. Rotate assignment of daily caregivers: Consistency in caregivers is important for individuals with Alzheimer's disease to build trust and rapport. Rotating caregivers frequently may disrupt the client's routine and lead to increased confusion and anxiety.
B. Provide an activity schedule that changes from day to day: Consistency and routine are beneficial for individuals with Alzheimer's disease as they provide structure and predictability. A consistent activity schedule helps the client feel more secure and can reduce agitation and behavioral issues.
C. Limit time for the client to perform activities: While it may be necessary to pace activities based on the client's abilities and fatigue level, arbitrarily limiting time for the client to perform activities can be counterproductive. Instead, individualizing the pace of activities based on the client's preferences and abilities is more beneficial.
D. Talk the client through tasks one step at a time: Individuals with Alzheimer's disease often experience cognitive impairment, including difficulty with memory, attention, and problem-solving. Breaking tasks down into manageable steps and providing clear, simple instructions can help the client understand and complete activities of daily living more effectively. This intervention supports the client's independence and reduces frustration.
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