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A Semi-Automated and Reproducible Biological-Based Method to Quantify Calcium Deposition In Vitro
Published on: June 2, 2022
Relation between serum calcium levels and mortality in patients with coronary artery disease
Shao-di Yan1, Yong Peng2, Wei Liu2
1Laboratory of Cardiovascular Diseases, West China Hospital, Sichuan University, Chengdu, China.
Insights
Higher serum calcium levels were associated with reduced in-hospital and long-term mortality in patients with coronary artery disease (CAD). This finding suggests serum calcium is a key predictor for cardiovascular outcomes.
Area of Science:
- Cardiology
- Biochemistry
- Clinical Medicine
Background:
- Calcium plays a vital role in numerous biological processes, particularly those implicated in cardiovascular disease (CVD).
- Understanding the prognostic value of serum calcium in patients with established coronary artery disease (CAD) is crucial for risk stratification.
Purpose of the Study:
- To investigate the association between baseline serum calcium levels and both short-term (in-hospital) and long-term mortality in patients diagnosed with CAD.
Main Methods:
- A cohort of 3109 patients with confirmed CAD was analyzed.
- Patients were stratified into quartiles based on admission serum calcium levels.
- Multivariable Logistic and Cox regression analyses were employed to assess in-hospital and long-term mortality, respectively.
Main Results:
- The mean serum calcium level was 2.20±0.15 mmol/L.
- Patients in the upper quartiles of serum calcium exhibited significantly lower in-hospital mortality (HRs ranging from 0.223 to 0.391) and long-term mortality (HRs ranging from 0.476 to 0.614) compared to the lowest quartile.
- These associations remained consistent across subgroups, including stable CAD, acute coronary syndrome (ACS), and discharged patients.
Conclusions:
- Serum calcium is an independent predictor of both in-hospital and long-term mortality in patients with CAD.
- Further research is needed to elucidate the underlying mechanisms and explore potential benefits of calcium supplementation in hypocalcemic patients.
Objectives:
Calcium has a critical role in a spectrum of biological processes related to cardiovascular disease. This study aimed to evaluate associations of baseline serum calcium levels with both short-term and long-term outcomes in CAD patients.
Materials And Methods:
3109 consecutive patients with angiography confirmed CAD, admitted to West China hospital of Sichuan University between July 2008 and September 2012 were enrolled and were categorized into quartiles according to admission serum calcium to determine the association of serum calcium level with in-hospital and long-term mortality by multivariable Logistic and Cox regression analysis respectively.
Results:
The admission serum calcium was normally distributed with a mean level of 2.20±0.15 mmol/L. A total of 259 deaths, including 58 in-hospital deaths, occurred during a mean follow-up of 20 months. Patients in the upper quartiles of serum calcium, as compared to the lowest quartile of serum calcium, were presented with lower in-hospital mortality [HR was 0.391 (95% CI: 0.188-0.812), 0.231(95% CI: 0.072-0.501) and 0.223 (95% CI: 0.093-0.534) for three upper quartiles versus lowest quartile respectively] and long-term mortality [HR was 0.614 (95% CI: 0.434-0.869), 0.476(95% CI: 0.294-0.698) and 0.553 (95% CI: 0.349-0.777) respectively]. Similar association between serum calcium and long-term mortality as showed in total cohort were also obtained when restricting analyses to subgroups: stable CAD patients, ACS patients and discharged patients.
Conclusions:
As a widely available clinical index, serum calcium was an independent predictor of both in-hospital and long-term mortality among CAD patients. Further studies are warranted to determine mechanisms and whether patients with hypocalcaemia could benefit from calcium supplement.
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