The MOST common cause of sleeping difficulty in the first 2 months of life is

Correct Answer: B

Rationale: Colic is a common cause of sleep disturbance in young infants.

Correct Answer: C

Rationale: During heparin therapy, the laboratory test that is monitored is the partial thromboplastin time (PTT). Heparin acts by potentiating the activity of antithrombin III, leading to the inhibition of both thrombin and factor Xa. The PTT measures the intrinsic pathway of coagulation and is prolonged with heparin due to its anticoagulant effect. Monitoring the PTT helps to ensure that the patient is within the therapeutic range of anticoagulation to prevent clot formation without increasing the risk of bleeding complications. Plasma fibrinogen, prothrombin time (PT), and international normalized ratio (INR) are not routinely monitored during heparin therapy.

Correct Answer: C

Rationale: Feeling very sad or withdrawn for more than 2 months is part of the Mental Health Action Signs, but the phrase 'for more than 2 months' is not accurate as symptoms lasting 2 weeks can already be significant.

Correct Answer: A

Rationale: Kidney involvement due to amyloid deposition is the most serious complication in FMF.

Correct Answer: A

Rationale: Kidney involvement due to amyloid deposition is the most serious complication in FMF.