Restlessness,anxiety,orthostatic hypotension generalized seizures severe tremor vivid hallucination and psychosis are possible symptoms of:

Correct Answer: B

Rationale: Step 1: Restlessness, anxiety, orthostatic hypotension, seizures, tremor, hallucination, and psychosis are symptoms commonly associated with withdrawal from a substance. Step 2: Withdrawal occurs when a person stops using a substance they have developed a physical dependence on. Step 3: Tolerance refers to the body's decreased response to a substance over time, not withdrawal symptoms. Step 4: Drug interactions between barbiturate and diazepam would not typically cause the wide range of symptoms mentioned. Step 5: Therefore, the correct answer is B (Withdrawal) as it aligns with the symptoms described.

Correct Answer: B

Rationale: The correct answer is B: Aluminium hydroxide. It causes constipation by absorbing water in the intestines, leading to hardened stools. Sodium bicarbonate (A) is an antacid and can cause diarrhea. Calcium carbonate (C) and magnesium oxide (D) are also antacids that can lead to diarrhea due to their laxative effect by increasing water in the intestines.

Correct Answer: C

Rationale: The correct answer is C: Heart failure. Fibrinolytic drugs are not typically used in the treatment of heart failure because they are primarily used to dissolve blood clots. In central deep venous thrombosis (A), multiple pulmonary emboli (B), and acute myocardial infarction (D), the formation of blood clots is a major concern, making fibrinolytic drugs an appropriate treatment option to break down these clots and restore blood flow. In contrast, heart failure does not involve the presence of blood clots, so fibrinolytic drugs would not be effective in managing this condition.

Correct Answer: D

Rationale: Diltiazem is a calcium channel blocker that acts by inhibiting slow calcium channels in the SA and AV nodes, leading to decreased conduction velocity and reduced contractility of the heart muscle. This results in slowing of the heart rate and can be used to treat conditions such as supraventricular tachycardia. A: Quinidine is a Class I antiarrhythmic drug that works by blocking sodium channels. B: Adenosine acts on adenosine receptors and is used for the termination of supraventricular tachycardia. C: Flecainide is a Class Ic antiarrhythmic drug that blocks sodium channels. Therefore, the correct answer is Diltiazem (D) as it specifically targets calcium channels in the SA and AV nodes, distinguishing it from the other choices.

Correct Answer: B

Rationale: Step 1: Clonidine is a centrally acting alpha-2 adrenergic agonist. Step 2: Sedative and hypnotic effects are common side effects of clonidine due to its action on the central nervous system. Step 3: Parkinson’s syndrome (Choice A) is not an unwanted effect of clonidine. Step 4: Agranulocytosis and aplastic anemia (Choice C) are rare but serious adverse effects, not typically associated with clonidine. Step 5: Dry cough and respiratory depression (Choice D) are not common side effects of clonidine. Step 6: Therefore, the correct answer is B, as sedative and hypnotic effects are expected with clonidine use, making them unwanted effects.