A patient presents with atrial fibrillation, a heart rate of 156 beats/min, and a blood pressure of 124/76 mm Hg. The physician orders diltiazem, a calcium channel blocker, to be given slowly by intravenous push
Why did the physician choose this medication to treat this patient's atrial tachyarrhythmia? a. Diltiazem decreases the calcium influx into the AV nodal tissue and decreases the speed of impulse conduction.
b. Diltiazem increases the calcium influx into the AV nodal tissue and decreases the speed of impulse conduction.
c. Diltiazem decreases the calcium influx into the myocardial tissue and decreases the strength of heart contraction.
d. Diltiazem increases the calcium influx into the myocardial tissue and decreases the strength of heart contraction.
A
Calcium channel–blocking drugs, such as verapamil and diltiazem, inhibit the inward Ca++ current into pacemaker tissue, especially the AV node. For this reason, they are used therapeutically to slow the rate of atrial tachydysrhythmias and protect the ventricle from excessive atrial impulses.
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Why should the nurse caution the client who has received a heart transplant to change positions slowly?
A. Rapid position changes can create shear forces and disrupt vascular sutures. B. The new vascular connections are more sensitive to position changes, leading to increased intravascular pressure. C. The new heart is denervated and unable to respond to decreases in blood pressure caused by position changes. D. The recovering heart diverts blood flow away from the brain when the client stands, increasing the risk for stroke.
The pediatric nurse is talking with a 15-year-old girl who is seeking treatment at the clinic for her acne
The nurse discovers that the patient works at a fast-food restaurant 3 days a week after school and uses an oil-based foundation as part of her makeup regimen. The nurse's best advice for the patient would be: A) "Wash your face three times in a day and use a water-based moisturizer." B) "Wash your face twice a day with mild soap and use as little makeup as possible." C) "Wash your face only at night and apply your makeup as usual in the morning." D) "Wash your face with an astringent cleanser and apply a fragrant lotion at bedtime."
Which of the following statements is an accurate nursing diagnosis?
A. Poor parenting abilities related to the lack of sleep B. disturbed body image , possibly related to recent childbirth. C. Risk for ineffective breastfeeding related to poor infant latch. D. Sleep deprivation, potential related to frequent infant feeding schedule.
As dose level rises, it is likely that the effect produced by the drug
A. rises as well B. rises then falls C. falls then rises D. remains the same