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 A
Explanation
A. Measure the circumference of both upper arms: This is the priority action. Swelling above the PICC insertion site could indicate infiltration or another complication. Measuring the circumference of both upper arms allows the nurse to assess the extent of swelling and monitor for any changes over time, providing valuable information for further intervention and evaluation.
B. Notify the provider who inserted the PICC line: This is an important action, but it may not be the first step. Before notifying the provider, the nurse should gather objective data by assessing the client's condition, such as measuring arm circumference, to provide a comprehensive report to the provider.
C. Remove the PICC line: This is not the first action to take. Removing the PICC line should only be considered after thorough assessment and under the direction of a healthcare provider, especially if there are signs of complications such as swelling.
D. Apply a cold pack to the client's upper arm: While applying a cold pack may help reduce swelling in some cases, it is not the priority action in this situation. The nurse should first assess the extent of swelling and gather additional data before implementing interventions such as cold therapy.
Correct Answer is B
Explanation
Rationale:
A) Administer ibuprofen as needed for pain: Ibuprofen is not typically recommended for pain relief in infants under 6 months old due to the risk of adverse effects, such as gastrointestinal irritation and renal impairment. Additionally, surgical repair of a cleft lip is not typically associated with severe postoperative pain requiring ibuprofen in infants.
B) Encourage the parents to rock the infant: This is the correct intervention. Rocking or gentle movement can provide comfort to infants postoperatively and may help soothe them. It can also promote bonding between the infant and parents, which is important for emotional support during the recovery period.
C) Offer the infant a pacifier: Pacifiers can be soothing for infants and may help provide non-nutritive sucking comfort. However, it's essential to ensure that the pacifier does not interfere with wound healing or exacerbate discomfort related to the cleft lip repair. Therefore, while offering a pacifier may be appropriate, it should be done with caution and under the guidance of the surgical team.
D) Position the infant on her abdomen: Placing the infant on her abdomen (prone position) is not recommended postoperatively, especially after cleft lip repair surgery. The supine position is typically preferred to reduce the risk of aspiration and ensure adequate airway patency. Additionally, the prone position may put pressure on the surgical site and cause discomfort.
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