All About Cardiovascular System and Disorders

Hypercalcemia manifests in the ECG as shortening of QT interval due to a short or even absent ST segment. Absent ST segment with the upslope of T wave

ST segment prolongation without changes in the T wave is the hallmark of hypocalcemia. ECG changes and clinical features of hypocalcemia are due to lowering of ionized calcium

Tall peaked T waves in hyperkalemia is due to the enhanced outward potassium current IKr. QRS widening is due to the reduced Vmax as the intracellular negativity

Prolongation of action potential duration in hypokalemia is due to inhibition of the outward potassium current. IKr, the rapid component of the delayed rectifier potassium current, is markedly

ECG showing right ventricular apical pacing in VVI mode with very wide QRS due left ventricular myocardial damage and associated coarse atrial fibrillation.

DAPT study has shown that extended (30 months) dual antiplatelet therapy after drug eluting stents can reduce myocardial infarction and stent thrombosis at a cost of higher bleeding

Many physicians used to give supplemental oxygen in patients presenting with acute myocardial infarction to the emergency department. The AVOID study has questioned this conventional wisdom of using

According to J-CTO score score, the probability of guide wire crossing an easy lesion in thirty minutes is: a) 90% b) 80% c) 70% d) 60%

Gene responsible for familial WPW syndrome: a) KCNJ5 b) HERG c) PRKAG2 d) None of the above

Ellis-van Creveld syndrome is an autosomal recessive disorder with single atrium as the hallmark cardiovascular defect, seen in 60% of the cases.