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Low serum testosterone and myocardial infarction in geriatric male inpatients
Insights
Low serum testosterone levels are linked to myocardial infarction and heavy drinking in older men. Formerly heavy drinkers may benefit from routine testosterone testing.
Area of Science:
- Endocrinology
- Cardiology
- Geriatrics
Background:
- Serum testosterone levels can decline with age and may be influenced by various health factors.
- Myocardial infarction (MI) and heavy alcohol consumption are significant health concerns in elderly populations.
Purpose of the Study:
- To investigate the association between serum testosterone levels and medical/behavioral factors in elderly males.
- To determine if testosterone levels can predict myocardial infarction in this demographic.
Main Methods:
- A survey of 71 males (aged 46-89) in an extended care facility assessed serum testosterone, medical history, and behavioral factors.
- Statistical analysis was used to identify correlations and predictive values.
Main Results:
- Lower testosterone levels were associated with a history of myocardial infarction (P < .002) and heavy drinking (P < .006).
- A testosterone level of ≤438 ng/dl effectively identified patients with MI (86.2% sensitivity).
- Testosterone influenced MI incidence in a threshold manner, independent of alcohol exposure below 438 ng/dl.
Conclusions:
- Serum testosterone determination is recommended for formerly heavy drinkers due to frequent low levels.
- Testosterone levels may serve as a biomarker for myocardial infarction risk in elderly men.
Abstract:
A survey of serum testosterone levels and a range of medical and behavioral factors was conducted on 71 males aged 46 to 89 years in an extended care medical facility. Histories of myocardial infarction or heavy drinking were separately associated with diminished testosterone levels (P less than .002 and P less than .006, respectively). No other factor was associated with testosterone level, including age and mobility. A testosterone level of no more than 438 ng/dl best discriminated patients with myocardial infarction (P less than .005, sensitivity 86.2%, and selectivity 50%). Increased incidence of myocardial infarction appeared to be influenced by testosterone in a threshold manner, since the incidence did not rise further with lesser testosterone levels once the level was below 438 ng/dl. The incidence of myocardial infarction among patients with testosterone levels below this threshold was unaffected by their exposure to alcohol. Among the 21 formerly heavy drinkers, many (62%) showed testosterone levels less than or equal to 300 ng/dl. Formerly heavy drinkers should be routinely considered for serum testosterone determination.