A nurse is collecting data from a client who has heart failure prior to the administration of furosemide. For which of the following findings should the nurse withhold the medication?
Blood pressure of 80/40 mm/Hg
Oxygen saturation of 95%
Serum sodium level of 140 mEq/L
Serum potassium level of 4.8 mEq/L
The Correct Answer is A
A. A blood pressure of 80/40 mm/Hg indicates hypotension, which is a contraindication for administering furosemide. The medication can further lower blood pressure and increase the risk of adverse effects.
B. An oxygen saturation of 95% is within normal limits and does not indicate a need to withhold furosemide.
C. A serum sodium level of 140 mEq/L is normal and would not warrant withholding the medication.
D. A serum potassium level of 4.8 mEq/L is also normal and safe for furosemide administration, as the medication may cause potassium loss but does not require withholding if the level is within range.
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Correct Answer is C
Explanation
A. Wearing low-heeled shoes is advisable to promote better posture and alignment, so this statement is appropriate.
B. Carrying heavy objects close to the body is a recommended practice for preventing back injury, indicating correct understanding.
C. Sitting with knees lower than hips can lead to poor posture and increased strain on the lower back, indicating a need for further clarification. The correct position should have the knees level or slightly higher than the hips.
D. Strengthening abdominal muscles is beneficial for back support and injury prevention, indicating the client understands the concept.
Correct Answer is A
Explanation
A. A positive result in a Tensilon test is indicated by a temporary improvement in muscle strength following the administration of edrophonium (Tensilon), which confirms the diagnosis of myasthenia gravis.
B. A "pill-rolling" tremor is associated with Parkinson's disease and is not a relevant finding in myasthenia gravis or the Tensilon test.
C. The Tensilon test assesses muscle strength rather than electrical charge in the muscle; therefore, an increase in electrical activity is not a relevant measure for this test.
D. No change in muscle strength indicates a negative result for myasthenia gravis, suggesting that the test did not confirm the diagnosis.