The therapeutic response to antidepressant drugs is usually over a period of:

Correct Answer: B

Rationale: The correct answer is B (2-3 weeks) because antidepressants typically require time to build up in the body and affect neurotransmitter levels. It takes time for the brain to adapt to the medication and for changes in mood to become noticeable. A: 2-3 days is too short for significant effects. C: 24 hours is not enough time for the medication to take full effect. D: 2-3 months is too long for most individuals to wait for improvement.

Correct Answer: D

Rationale: The correct answer is D because cocaine intoxication presents with a variety of symptoms including clouding of consciousness, lightness of body, feeling of flight, wave warmth, physical bliss, motionlessness, clear consciousness, improved mood, influx of physical and spiritual forces, locomotive and speech excitation, and reappraisal of personality. These symptoms collectively represent the typical effects of cocaine intoxication. Choices A, B, and C each only describe a subset of the symptoms and experiences associated with cocaine intoxication, whereas choice D encompasses all the possible manifestations. Therefore, the correct answer is D as it includes all the symptoms that can be observed during cocaine intoxication.

Correct Answer: C

Rationale: The correct answer is C: Desoxiribonuclease. Desoxiribonuclease is an enzyme that breaks down DNA, not disulfide bonds of proteoglycans. A: Acetylcysteine breaks disulfide bonds, reducing sputum viscosity. B: Ambroxol disrupts disulfide bonds, aiding in sputum clearance. D: Bromhexin also works by disrupting disulfide bonds, facilitating mucus clearance.

Correct Answer: A

Rationale: The correct answer is A: Radioactive phosphorus 32. Radioactive phosphorus 32 depresses erythrogenesis by inhibiting DNA synthesis in rapidly dividing cells like erythroblasts. Ferrous sulfate (B) is an iron supplement that promotes erythropoiesis. Molgramostim (C) is a granulocyte-macrophage colony-stimulating factor, which stimulates white blood cell production, not erythrogenesis. Folic acid (D) is essential for DNA synthesis and red blood cell production, so it would not depress erythrogenesis.

Correct Answer: C

Rationale: Rationale: C is the correct answer because cardiac glycoside-induced ventricular tachyarrhythmias are more common in patients with hypokalemia, not hyperkalemia. This is due to the increased sensitivity of the myocardium to glycosides in the setting of low potassium levels. A: Lidocaine is not the drug of choice for treating these arrhythmias; instead, antiarrhythmic medications like phenytoin or amiodarone are preferred. B: Digibind (Digoxin-specific antibody) is used in severe cases to reverse the effects of cardiac glycosides. D: Patients with heart failure or preexisting heart damage are at higher risk for developing these arrhythmias due to impaired cardiac function and increased susceptibility to glycoside toxicity.