NURS MISC - NCLEX RATIONALES.

NURS MISC - NCLEX RATIONALES/NURS MISC - NCLEX RATIONALES. 1. Cardiac dysrhythmias are a risk for clients taking haloperidol and other conventional antipsychotic medications. The client should be monitored for changes in vital signs, tachycardia, and ECG changes, including prolonged QT interval, while taking haloperidol. There is a risk for cardiac arrest due to torsades de pointes. 2. Body weight is the most reliable indicator of fluid loss for infants and young children. 3. Measles, mumps rubella (MMR) is correct. A 1-year-old child should receive the first of two doses of the MMR vaccine. Diphtheria, tetanus and acellular pertussis (DTaP) is incorrect. By 1 year of age, the child should have already received three doses of DTaP: at 2 months, 4 months, and 6 months. The child should receive a fourth dose at 15 months of age.