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1 Oral Medicine
In a patient with suspected acute coronary syndrome, which of the following ECG changes is most indicative of an ST-elevation myocardial infarction (STEMI)?1) ST depression in leads II, III, and aVF2) ST elevation in leads I and aVL3) ST elevation in leads V1-V4 with reciprocal depression in leads II, III, and aVF4) ST elevation in leads II, III, and aVF
In a patient with a suspected STEMI, the characteristic ECG findings include ST elevation in the anterolateral leads (I, aVL, V1-V6) and reciprocal ST depression in the inferior leads (II, III, aVF). The pattern of ST elevation in the anterolateral leads with reciprocal depression in the inferior leads is most indicative of a STEMI affecting the anterolateral wall of the heart.
2 Oral Medicine
What is the most common cause of respiratory alkalosis?1) Hyperventilation2) Metabolic acidosis3) Respiratory acidosis4) Excessive ingestion of antacids
Respiratory alkalosis is most commonly caused by hyperventilation, which can occur due to anxiety, pain, fever, hypoxia, and certain neurological conditions.
3 Oral Medicine
What is the genetic pattern of inheritance for Huntington's disease?(1) Autosomal recessive(2) Autosomal dominant(3) X-linked recessive(4) X-linked dominant
Huntington's disease is an autosomal dominant disorder. This means that a single copy of the defective gene, inherited from either parent, is sufficient to cause the disease. Each offspring of an affected individual has a 50% chance of inheriting the gene and developing the disease.
4 Oral Medicine
The pathogenesis of hypocromic anaemia in lead poisoning is due to
1. Inhibition of enzymes involved in heme biosynthesis2. Binding of lead to transferrin, inhibiting transport of iron3. Binding of lead to cell membrane of erythroid precursors4. Binding of lead to ferretin inhibiting their breakdown into hemosiderin
5 Oral Medicine
Which of the following is a risk factor for developing atherosclerosis?1) High HDL cholesterol2) Low LDL cholesterol3) High triglycerides4) Low triglycerides
High triglycerides are a risk factor for atherosclerosis as they contribute to the formation of lipid-rich plaques in the arterial walls.
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