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Low serum testosterone and increased mortality in men with coronary heart disease
Chris J Malkin1, Peter J Pugh, Paul D Morris
1Department of Cardiology, Royal Hallamshire Hospital, Sheffield, UK
Insights
Testosterone deficiency is common in men with coronary disease and significantly increases mortality risk. Further research into testosterone replacement therapy is warranted to improve survival outcomes.
Area of Science:
- Cardiology
- Endocrinology
- Men's Health
Background:
- Coronary disease is a leading cause of mortality.
- Testosterone deficiency is increasingly recognized as a potential health concern.
Purpose of the Study:
- To determine the prevalence of testosterone deficiency in men with coronary disease.
- To investigate the impact of serum testosterone levels on survival in this cohort.
Main Methods:
- A longitudinal follow-up study was conducted.
- 930 men with coronary disease were recruited between 2000 and 2002.
- Follow-up averaged 6.9 years, assessing all-cause and vascular mortality.
Main Results:
- The prevalence of testosterone deficiency was 20.9% (bio-available testosterone) or 16.9% (total testosterone).
- Men with testosterone deficiency had significantly higher mortality rates (21% vs. 12%).
- Low bio-available testosterone was an independent predictor of mortality, alongside left ventricular dysfunction.
Conclusions:
- Testosterone deficiency is prevalent in men with coronary disease.
- Low testosterone levels are associated with significantly worse survival outcomes.
- Prospective trials are needed to evaluate testosterone replacement therapy's effect on survival.
Background:
To examine the effect of serum testosterone levels on survival in a consecutive series of men with confirmed coronary disease and calculate the prevalence of testosterone deficiency.
Design:
Longitudinal follow-up study.
Setting:
Tertiary referral cardiothoracic centre. Patients 930 consecutive men with coronary disease referred for diagnostic angiography recruited between June 2000 and June 2002 and followed up for a mean of 6.9±2.1 years.
Outcome:
All-cause mortality and vascular mortality. Prevalence of testosterone deficiency.
Results:
The overall prevalence of biochemical testosterone deficiency in the coronary disease cohort using bio-available testosterone (bio-T) <2.6 nmol/l was 20.9%, using total testosterone <8.1 nmol/l was 16.9% and using either was 24%. Excess mortality was noted in the androgen-deficient group compared with normal (41 (21%) vs 88 (12%), p=0.002). The only parameters found to influence time to all-cause and vascular mortality (HR ± 95% CI) in multivariate analyses were the presence of left ventricular dysfunction (3.85; 1.72 to 8.33), aspirin therapy (0.63; 0.38 to 1.0), β-blocker therapy (0.45; 0.31 to 0.67) and low serum bio-T (2.27; 1.45 to 3.6).
Conclusions:
In patients with coronary disease testosterone deficiency is common and impacts significantly negatively on survival. Prospective trials of testosterone replacement are needed to assess the effect of treatment on survival.
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