Correct Answer: C

Rationale: Inability to lie supine is a characteristic sign of lower respiratory infection. This positioning preference is often seen in patients with lower respiratory infections due to discomfort or difficulty breathing when lying flat on their back. While cough and fever are common symptoms associated with respiratory infections, they are not specific to lower respiratory infections. Inability to eat may indicate general illness or discomfort but is not a specific indicator of lower respiratory infection.

Correct Answer: B

Rationale: Multivitamins are not typically considered a non-pharmacological technique for lowering blood pressure. While dietary changes, smoking cessation, and limiting caffeine intake can positively impact blood pressure levels, multivitamins are generally not specifically recommended as a primary intervention for this purpose. Dietary changes can include reducing salt intake and increasing potassium-rich foods, which are known to help manage blood pressure. Smoking cessation is crucial due to the negative impact of smoking on blood pressure and overall cardiovascular health. Limiting caffeine intake is advised as excessive caffeine consumption can lead to a temporary increase in blood pressure. Therefore, focusing on lifestyle modifications like healthy eating, smoking cessation, and caffeine reduction is more effective in managing blood pressure than relying on multivitamins.

Correct Answer: B

Rationale: The correct answer is B. If a new mother observes that her baby has six to eight wet diapers a day, it indicates that the baby is getting enough breast milk. This is a crucial indicator of adequate milk intake and hydration in infants. Conversely, choices A, C, and D are incorrect. A baby sleeping through the night, crying frequently, or being awake and alert are not reliable indicators of sufficient breast milk intake. It is essential for new mothers to track their baby's diaper output to ensure they are receiving the necessary nutrition.

Correct Answer: C

Rationale: The correct answer is C. Ear cartilage folded over, lanugo present over much of the body, and slow recoil time are all characteristics of a preterm infant. A is incorrect because full sole creases, nails extending beyond the fingertips, and scarf sign showing the elbow beyond the midline are features of a term infant. B is incorrect as testes located in the upper scrotum, rugae covering the scrotum, and vernix covering the entire body are also indicative of a term infant. D is incorrect because a 1 cm breast bud, peeling skin and veins not visible, and rapid recoil of legs and arms to extension are characteristics seen in a more mature infant, not a preterm newborn.

Correct Answer: D

Rationale: Secretory diarrhoea is not a clinical type but a distinct mechanism of diarrhoea characterized by increased electrolyte secretion. Acute watery, bloody, and persistent diarrhoea are recognized clinical types associated with different underlying causes and pathophysiologies. Acute watery diarrhoea is common in infectious gastroenteritis, bloody diarrhoea can be caused by inflammatory conditions or infections, and persistent diarrhoea typically lasts for more than 14 days due to various reasons like infections, malabsorption, or inflammatory bowel diseases.