Placental parasitation is associated with

Correct Answer: D

Rationale: Placental parasitation is associated with Malaria prenatally because the Plasmodium parasite can infect the placenta through the bloodstream, leading to severe complications for both the mother and the fetus. This infection can result in low birth weight, preterm birth, and even stillbirth. Candidiasis, Tuberculosis, and Multiple gestation are not directly associated with placental parasitation. Candidiasis is a fungal infection, Tuberculosis is a bacterial infection, and Multiple gestation refers to carrying more than one fetus during pregnancy. Therefore, the correct answer is D, Malaria prenatally, due to the direct impact of Plasmodium parasite on the placenta and its implications on pregnancy outcomes.

Correct Answer: A

Rationale: The correct answer is A: Low ACTH and low cortisol. In a patient with an adrenal tumor causing Cushing's syndrome, the tumor itself produces excess cortisol independently of ACTH regulation. Therefore, ACTH levels are low due to negative feedback from high cortisol levels. As a result, cortisol levels are high, while ACTH levels are low. Explanation for other choices: B: Low ACTH and high cortisol - This suggests primary adrenal insufficiency (Addison's disease), not Cushing's syndrome. C: High ACTH and low cortisol - This suggests secondary adrenal insufficiency, not Cushing's syndrome. D: High ACTH and high cortisol - This is contradictory and not physiologically possible in the context of an adrenal tumor causing Cushing's syndrome.

Correct Answer: D

Rationale: The correct answer is D - All of the above. Braxton Hicks contractions can be differentiated from true labor by timing, intensity, and duration. Timing refers to the regularity of contractions, intensity relates to the strength of contractions, and duration indicates how long contractions last. By considering all three factors together, one can determine whether contractions are Braxton Hicks (practice contractions) or true labor contractions. Choices A, B, and C alone provide only partial information, which may lead to misinterpretation. Therefore, choosing all three factors collectively (D) is essential for accurate differentiation.

Correct Answer: A

Rationale: Neonatal injury to nerve roots C8 & T1 leads to Klumpke's palsy due to damage to the lower brachial plexus. This results in weakness of the hand and forearm muscles. Erb's palsy is from injury to C5-C6 roots causing upper brachial plexus damage. Phrenic injury affects the diaphragm due to C3-C5 roots. Radial palsy involves the radial nerve, typically from injury at the spiral groove of the humerus. Therefore, the correct answer is A as it directly correlates with the specific nerve roots affected in Klumpke's palsy.

Correct Answer: C

Rationale: The correct answer is C because living wills are typically not honored for terminally ill patients with impaired cognition. Firstly, living wills require the patient to be of sound mind to make decisions. Secondly, in the case of a cognitively impaired patient, their ability to express their wishes and understand the implications may be compromised. Therefore, healthcare providers may not be able to honor the living will accurately. Choices A, B, and D are incorrect because A) competency can be determined by healthcare professionals, B) impaired cognition can lead to incompetence, and D) informed consent requires the patient to understand the decision-making process.

Correct Answer: C

Rationale: Step 1: In normal labor, the cervix undergoes effacement and dilation. Step 2: A short and thin cervical canal indicates progression towards labor. Step 3: Long and thick cervical canal suggests a delay in labor progress. Step 4: Choice C, short and thin cervical canal, is indicative of abnormal labor. Summary: A, B, and D do not reflect changes in the cervix seen in labor, making them incorrect choices.

Correct Answer: A

Rationale: The correct answer is A because the Brain Trauma Foundation recommends intracranial pressure monitoring for patients with traumatic brain injury and a GCS of 3 to 8, regardless of the head CT findings. Intracranial pressure monitoring helps in the management of elevated intracranial pressure, which can be life-threatening. Abnormal head CT findings may indicate the need for immediate intervention, but intracranial pressure monitoring is still recommended for all patients in this GCS range to guide treatment decisions. Choices B, C, and D are incorrect because hypotension, age > 40 years old, and bradycardia are not factors that would exclude a patient from needing intracranial pressure monitoring in the presence of a GCS of 3 to 8.

Correct Answer: A

Rationale: Placenta praevia is classified into four types based on the degree of coverage of the cervix by the placenta. Complete placenta praevia, where the internal os is completely covered by the placenta, is referred to as Type 4. This is the correct answer as it accurately describes the specific condition. Choices B, C, and D are incorrect as they do not correspond to the classification system for placenta praevia.

Correct Answer: D

Rationale: The correct answer is D, "All of the above." Fetal macrosomia, malpresentation, and pelvic abnormalities are all known causes of obstructed labor. Fetal macrosomia refers to a large baby, which can lead to difficulty in passing through the birth canal. Malpresentation occurs when the baby is not positioned optimally for delivery, such as breech or transverse positions. Pelvic abnormalities, such as a contracted pelvis, can impede the baby's passage during labor. Therefore, selecting option D is appropriate as it encompasses all the major causes of obstructed labor. Choices A, B, and C are not individually comprehensive enough to cover all potential causes of obstructed labor.