Related Experiment Videos
Plasma calcium in acute myocardial infarction
Annals of Clinical Biochemistry
|January 1, 1977
Summary
Plasma calcium levels may appear to fall in acute myocardial infarction patients due to decreased albumin levels, not true hypocalcaemia. Bed rest may influence these changes.
Area of Science:
- Cardiology
- Clinical Biochemistry
Background:
- Acute myocardial infarction (AMI) can affect electrolyte balance.
- Plasma calcium is crucial for cardiac function and is often bound to albumin.
Purpose of the Study:
- To investigate plasma calcium changes in patients with acute myocardial infarction.
- To determine if changes in plasma albumin influence calcium measurements.
- To explore the potential impact of immobility on these findings.
Main Methods:
- Plasma calcium and albumin levels were monitored in 18 AMI patients over several days.
- Calcium values were corrected for albumin levels.
- Comparison with three patients experiencing myocardial ischemia.
Main Results:
- A decrease in plasma calcium was observed in 13 out of 18 AMI patients.
- Plasma albumin levels also decreased concurrently in these patients.
- Correcting calcium for albumin eliminated the apparent hypocalcaemia, suggesting it was albumin-related. Similar trends were seen in myocardial ischemia patients.
Conclusions:
- The apparent fall in plasma calcium in AMI patients is likely an artifact due to decreased albumin levels.
- Hypocalcaemia is not a significant direct consequence of acute myocardial infarction.
- Confinement to bed may contribute to the observed changes in both calcium and albumin levels.