Question 62 · LEK · ECG
The QT interval in the following ECG (speed 25 mm/s) should be classified as:

- A. normal.
- B. shortened.
- C. prolonged.
- D. undetermined because T waves are negative.
- E. undetermined because it differs between various leads.
Hint
Compare the distance from the start of QRS to the end of the T wave with the RR interval at this fairly slow heart rate.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Internal medicine
- The most common clinical sign of pulmonary embolism is:
- The first disorder caused by an overdosage of sodium bicarbonate is:
- A woman came to the ER department because of abdominal pain, frequent (8 daily) painful defecation of bloody stool, high fever, tachycardia and…
- Unconscious patients suspected of meningitis should be:
- A patient diagnosed with STEMI myocardial infarction, with severe chest pain, no symptoms of cardiovascular failure, no dyspnea and hypoxemia does…
- A classic triad of symptoms in pulmonary embolism, occurring in 25% of patients, includes: