A nurse caring for a client receiving doxycycline for the treatment of Lyme's Disease. Which statement below should be included in the client's teaching plan?
Regular sun exposure is needed to maximize drug efficacy
Avoid water while taking this medication
Take this medication with antacids to relieve gastrointestinal symptoms
Avoid dairy products when taking this medication
The Correct Answer is D
A. Regular sun exposure is needed to maximize drug efficacy: This is incorrect; in fact, doxycycline can cause photosensitivity, and sun exposure should be minimized.
B. Avoid water while taking this medication: Water should be taken with doxycycline to help prevent esophageal irritation.
C. Take this medication with antacids to relieve gastrointestinal symptoms: Antacids can also interfere with doxycycline absorption, so they should be avoided.
D. Avoid dairy products when taking this medication: Dairy products can bind to doxycycline and reduce its absorption in the gastrointestinal tract, which decreases its effectiveness. The client should avoid dairy when taking the medication.
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Correct Answer is D
Explanation
A. Tendon rupture: Tendon rupture is not a side effect associated with estrogen blockers.
B. Phlebitis: While thromboembolic events are a risk, phlebitis (inflammation of a vein) is not a typical concern.
C. Increased risk of lymphomas: Estrogen blockers are not known to increase the risk of lymphomas.
D. Thromboembolic events: Estrogen blockers, such as tamoxifen, are associated with an increased risk of thromboembolic events (e.g., deep vein thrombosis, pulmonary embolism).
Correct Answer is ["A","C"]
Explanation
A. Fluoroquinolones: Fluoroquinolones, such as ciprofloxacin and levofloxacin, are known to have the potential to prolong the QT interval, increasing the risk of arrhythmias like Torsades de Pointes.
B. Penicillins: Penicillins do not typically cause QT prolongation. Their adverse effects are more likely to include allergic reactions or gastrointestinal disturbances.
C. Macrolides: Macrolides, such as azithromycin and erythromycin, are associated with QT interval prolongation and an increased risk of cardiac arrhythmias.
D. Beta-Lactams: Beta-lactams, which include penicillins and cephalosporins, are not commonly associated with QT prolongation. They are more likely to cause allergic reactions.
E. Cephalosporins: Cephalosporins are not typically associated with QT prolongation. They share a similar beta-lactam structure to penicillins.