Iron deficiency anemia leads to pallor, fatigue, dizziness, exertional dyspnea and other symptoms of tissue ischemia. It’s:

Correct Answer: A

Rationale: The correct answer is A: TRUE. Iron deficiency anemia leads to symptoms like pallor, fatigue, dizziness, exertional dyspnea due to decreased oxygen-carrying capacity in the blood. Iron is essential for hemoglobin production, which carries oxygen to tissues. Other choices are incorrect: B is false because iron deficiency anemia does lead to these symptoms. C is incorrect because not all symptoms listed are present in every case of iron deficiency anemia. D is incorrect because the symptoms mentioned are associated with iron deficiency anemia.

Correct Answer: D

Rationale: The correct answer is D: Propranolol. Propranolol is a non-selective beta-blocker, affecting both beta1 and beta2 receptors. In contrast, choices A, B, and C are cardioselective beta1-adrenoceptor-blocking drugs. Metoprolol, Talinolol, and Atenolol specifically target beta1 receptors in the heart, making them suitable for angina treatment. Propranolol, being non-selective, may lead to unwanted side effects related to beta2 receptor blockade, such as bronchoconstriction and peripheral vasoconstriction. Therefore, for angina patients, cardioselective beta1 blockers are preferred to minimize potential adverse effects.

Correct Answer: B

Rationale: The correct answer is B: Vasoconstrictors. Vasoconstrictors are used to increase blood pressure in chronic hypotension by constricting blood vessels, thus raising blood pressure. Positive inotropic drugs (A) increase the strength of the heart's contractions, which is not the primary concern in hypotension. Plasmoexpanders (C) are used to increase blood volume, not necessarily blood pressure. Analeptics and tonics (D) are more commonly used for conditions like fatigue or depression, not specifically for chronic hypotension.

Correct Answer: A

Rationale: The correct answer is A: Elderly patients (over 45 years). Radioiodines are suitable for elderly patients due to their slower metabolism, which allows for better uptake and retention of the radioiodine in the thyroid gland. This results in more effective treatment of conditions like hyperthyroidism or thyroid cancer. Pregnant women, nursing mothers, and younger patients should avoid radioiodine therapy due to potential risks to the fetus, infant, and developing thyroid gland, respectively. Overall, the slower metabolism in elderly patients makes them the most suitable candidates for radioiodine therapy.

Correct Answer: A

Rationale: Rationale: 1. During acute inflammation, the initial response is vasodilation and increased capillary permeability. 2. This leads to increased blood flow, redness, heat, and swelling at the site of injury. 3. The purpose is to deliver immune cells and proteins to the affected area to fight off pathogens. 4. Infiltration of leukocytes and phagocytic cells occurs after vasodilation in the exudation phase. 5. Tissue degeneration and fibrosis occur in the later stages of chronic inflammation, not in the acute phase. 6. Choice A is correct as it specifically describes the characteristics of the acute, transient phase of inflammation. Summary: - Choice A is correct as it accurately describes the characteristics of acute inflammation. - Choices B, C, and D are incorrect as they describe phases or processes that occur in chronic inflammation or are not specific to the acute phase.