Correct Answer: C

Rationale: Placenta previa is a condition in pregnancy where the placenta implants low in the uterus, partially or completely covering the cervix. This can lead to painless, bright red vaginal bleeding in the third trimester. However, in some cases, placenta previa can also present with sudden onset of severe lower abdominal pain and signs of shock, such as syncope, pallor, and abdominal distention due to concealed bleeding. In severe cases, the bleeding can be significant and life-threatening for both the mother and the baby. It is important to promptly diagnose and manage placenta previa to prevent complications.

Correct Answer: D

Rationale: In a situation where a nurse administers the wrong medication to a patient resulting in harm, both the nurse and the physician can be held liable for their respective roles in the error. The nurse is responsible for administering the incorrect medication, which is a violation of their duty to provide safe and appropriate care. However, the physician is also responsible because they failed to review the patient's documentation indicating the allergy to the medication before ordering it. As healthcare professionals, both the nurse and the physician have a duty of care to ensure patient safety, and in this case, both individuals failed in their responsibilities, leading to the harm caused to the patient. Therefore, both the nurse and the physician can be held accountable for the error.

Correct Answer: C

Rationale: The primary nursing care delivery model is represented by option C, where the nurse performs all tasks needed by the individual patient to optimize health. In this model, the nurse is responsible for coordinating and providing comprehensive care to a specific group of patients throughout their stay. The primary nurse establishes a close relationship with the patient and takes accountability for their care, ensuring continuity, communication, and personalized attention. This approach emphasizes the importance of the nurse-patient relationship and holistic care delivery, which can lead to improved patient outcomes and satisfaction.

Correct Answer: C

Rationale: The clinical presentation of fever, malaise, maculopapular rash starting on the face and spreading to the trunk and extremities, along with leukopenia and thrombocytopenia, is highly suggestive of Rocky Mountain spotted fever (RMSF) caused by Rickettsia rickettsii. RMSF is a tick-borne illness transmitted by the American dog tick, Rocky Mountain wood tick, and brown dog tick. The constellation of symptoms described aligns well with the typical presentation of RMSF. Borrelia burgdorferi causes Lyme disease, which presents with erythema migrans but does not typically cause leukopenia or thrombocytopenia. Plasmodium falciparum is the causative agent of severe malaria and would present with symptoms such as cyclic fevers, anemia, and jaundice but not the described rash distribution.

Correct Answer: D

Rationale: The aim of pelvic muscle exercises for a patient with urinary incontinence is to strengthen the muscles that control the vagina and urethra. These exercises, known as Kegel exercises, target the pelvic floor muscles that support the pelvic organs and help in controlling urinary function. Strengthening these muscles can help improve bladder control and reduce or eliminate urinary incontinence. Exercises that target the perineal area can also be beneficial in managing urinary incontinence, but the main focus is on strengthening the muscles that control the vagina and urethra.