Tuberculosis
Tuberculosis is a disease caused by infection with the bacterium Mycobacterium tuberculosis. Approximately 10 million per year develop tuberculosis globally, and an estimated 1.7 billion people have latent tuberculosis. It is the second most common cause of death from...
Addison’s Disease
Addison’s disease (primary adrenal insufficiency) is caused by the underproduction of the steroid hormones by the adrenal glands. Glucocorticoid, mineralocorticoid and sex steroid production are all affected. It is more common in women than in men and most commonly...
Hyperaldosteronism
Hyperaldosteronism occurs when there are excessive circulating levels of aldosterone. Hyperaldosteronism can be subdivided into two main types: Primary hyperaldosteronism (~95% of cases) Secondary hyperaldosteronism (~5% of cases) Primary hyperaldosteronism is...
Test Your ECG Knowledge – Waves, Segments and Intervals
Test your knowledge of the ECG waves, segments and intervals with these questions. 1. Which single statement regarding the p wave on the ECG is true? A. It is normally between 120 and 150 ms in duration B. It is positive in lead AVR C. It represents atrial...
Test Your ECG Knowledge – Rate, Rhythm & Axis
Test your knowledge of the ECG rate, rhythm and axis with these questions. 1. Which of the following is the usual paper speed of an ECG? A. 10 mm/secB. 25 mm/secC. 50 mm/secD. 75 mm/secE. 100 mm/sec Show Answer Answer: B. 25 mm/sec The usual paper speed of an...Products
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