Correct Answer: A

Rationale: The correct answer is A: Isoproterenol 0.2 to 0.6 mg IV bolus. Isoproterenol is a non-selective beta-adrenergic agonist that can worsen graft rejection in heart transplant patients. The appropriate intervention for bradyarrhythmia in posttransplant patients is external pacemaking or pharmacological agents like atropine or epinephrine. Isoproterenol should be avoided due to its potential to stimulate the immune system and increase the risk of rejection. It is crucial to choose interventions that address the bradycardia without compromising the patient's transplant graft.

Correct Answer: B

Rationale: The correct answer is B: Face presentation. Vaginal delivery is possible in face presentation as the baby's head is extended, allowing for descent through the birth canal. Brow presentation (A) and shoulder presentation (C) may require cesarean delivery due to the atypical presentation of the baby. Unstable lie (D) refers to the baby being in a transverse position, which also necessitates a cesarean section. Face presentation is the only option where vaginal delivery may be possible due to the extended position of the baby's head.

Correct Answer: C

Rationale: The correct answer is C: Funic cord prolapse. Funic cord prolapse is characterized by the fetal umbilical cord being alongside the presenting part. This type of cord prolapse is a more specific term used to describe the exact position of the cord in relation to the presenting part. The other choices are incorrect because: - A: Occult umbilical cord prolapse refers to a hidden or concealed cord prolapse, where the cord is not visible externally. - B: Overt umbilical cord prolapse is when the cord is visible externally before the presenting part. - D: Complete cord prolapse implies that the entire cord has descended through the cervix before the presenting part, not just alongside it. Therefore, the correct choice is C as it accurately describes the specific positioning of the umbilical cord in relation to the presenting part during cord prolapse.

Correct Answer: A

Rationale: The correct answer is A: Symptom are absent and abnormal specific laboratory results. Chemical diabetes mellitus refers to a condition where there are abnormal specific laboratory results indicating diabetes without the presence of any symptoms. This classification is based on objective data from laboratory tests rather than subjective symptoms. Choices B, C, and D are incorrect as they do not align with the definition of chemical diabetes mellitus, which focuses on laboratory results rather than symptoms, congenital abnormalities, or pregnancy outcomes.

Correct Answer: B

Rationale: Step 1: Hyperemesis gravidarum is characterized by severe nausea and vomiting during pregnancy. Step 2: Inability to eat or retain food all through is a hallmark feature due to excessive vomiting. Step 3: This leads to dehydration, electrolyte imbalances, and weight loss. Step 4: Pallor, cyanosis, weakness, and smaller fundal height are not specific to hyperemesis gravidarum. Summary: Choice B is correct as it directly relates to the primary symptom of excessive vomiting in hyperemesis gravidarum, while the other choices are not specific to this condition.