Correct Answer: B

Rationale: The correct statement the nurse should make is that dehydration can increase the risk of preterm labor. Dehydration reduces amniotic fluid and uterine blood flow, potentially leading to preterm contractions. Choice A is incorrect because dehydration is not treated with calcium supplements but rather with adequate fluid intake. Choice C is incorrect as dehydration does not directly increase gastroesophageal reflux. Choice D is incorrect as dehydration is not caused by decreased hemoglobin and hematocrit levels but rather by insufficient fluid intake or excessive fluid loss.

Correct Answer: B

Rationale: The correct answer is B: aPTT. The activated partial thromboplastin time (aPTT) is monitored to assess the therapeutic effect of heparin and to adjust the infusion rate if needed. Monitoring hemoglobin levels (choice A) is important for assessing anemia but is not specific to heparin therapy. INR (choice C) is used to monitor the effects of warfarin, not heparin. Platelet count (choice D) is important to monitor for heparin-induced thrombocytopenia, but aPTT is the primary laboratory value used to monitor heparin therapy.

Correct Answer: C

Rationale: The correct answer is C. This statement indicates a need for further teaching because antibiotics are ineffective against viral infections. It is important to educate the participant that antibiotics are only effective against bacterial infections, not viral ones. Choices A, B, and D are correct statements that promote good hygiene practices and infection prevention during pregnancy.

Correct Answer: C

Rationale: The correct answer is C: "Avoid drinking more than 1 liter of fluid per day." Clients with heart failure are typically advised to limit their fluid intake to around 1 liter per day to prevent fluid overload, which can worsen their condition. Choices A, B, and D are incorrect because they suggest fluid intakes that are higher than the recommended limit, which could lead to fluid retention and exacerbate heart failure symptoms.

Correct Answer: C

Rationale: The correct answer is C: Diaphoresis. Diaphoresis, which is excessive sweating, is a common response to acute pain due to increased sympathetic nervous system activity. Options A and B, Bradycardia and Hypotension, are unlikely findings in a client experiencing acute pain as pain usually triggers an increase in heart rate (tachycardia) and blood pressure. Option D, Hyperactive bowel sounds, is not typically associated with acute pain.