Podcast
Questions and Answers
What ECG abnormality would you expect to see in a 23-year-old woman with severe vomiting and diarrhoea and a serum potassium of 2.6 mmol/L?
What ECG abnormality would you expect to see in a 23-year-old woman with severe vomiting and diarrhoea and a serum potassium of 2.6 mmol/L?
- Tented T waves (correct)
- S-T depression
- Prolonged P-R interval
- Wide QRS complex
In dextrocardia, where is the apex beat of a normal heart usually felt?
In dextrocardia, where is the apex beat of a normal heart usually felt?
- Upper back
- Right side of the chest (correct)
- Left side of the chest
- Lower abdomen
Which heart sound is produced by the closure of the atrioventricular (mitral and tricuspid) heart valves?
Which heart sound is produced by the closure of the atrioventricular (mitral and tricuspid) heart valves?
- Heart sound II (S2)
- Heart sound IV (S4)
- Heart sound III (S3)
- Heart sound I (S1) (correct)
Which heart sound is known as the 'dub' sound heard during cardiac auscultation?
Which heart sound is known as the 'dub' sound heard during cardiac auscultation?
What ECG abnormality would you expect to see in a 23-year-old woman with severe vomiting and diarrhoea and a serum potassium of 2.6 mmol/L?
What ECG abnormality would you expect to see in a 23-year-old woman with severe vomiting and diarrhoea and a serum potassium of 2.6 mmol/L?
What is the hallmark ECG finding in hyperkalemia?
What is the hallmark ECG finding in hyperkalemia?
Which of the following heart sounds is produced by the closure of the atrioventricular (mitral and tricuspid) heart valves?
Which of the following heart sounds is produced by the closure of the atrioventricular (mitral and tricuspid) heart valves?
In dextrocardia, where is the apex beat of a normal heart usually felt?
In dextrocardia, where is the apex beat of a normal heart usually felt?
What is the hallmark ECG finding in hyperkalemia?
What is the hallmark ECG finding in hyperkalemia?
Which of the following is indicative of severe dehydration in a patient?
Which of the following is indicative of severe dehydration in a patient?
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Study Notes
Electrocardiogram (ECG) Abnormalities
- In a 23-year-old woman with severe vomiting and diarrhoea and a serum potassium of 2.6 mmol/L, the expected ECG abnormality is a prolonged PR interval, flattened or inverted T waves, and a widened QRS complex.
- The hallmark ECG finding in hyperkalemia is a widened QRS complex.
Heart Sounds
- The heart sound produced by the closure of the atrioventricular (mitral and tricuspid) heart valves is the S1 sound, also known as the 'lub' sound.
- The S2 sound, also known as the 'dub' sound, is produced by the closure of the semilunar (aortic and pulmonary) valves.
Dextrocardia
- In dextrocardia, the apex beat of a normal heart is usually felt on the right side of the chest.
Dehydration
- Severe dehydration in a patient is indicated by a serum potassium level of 2.6 mmol/L.
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