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Left main coronary artery disease in adults younger than 50 years: a comparison with older patients
G A Stouffer1, L Mott, A Brizolara
1Division of Cardiology, University of Texas Medical Branch, Galveston, Texas 77555-1064, USA. rastouff@utmb.edu
Insights
Left main coronary artery (LMCA) disease presents similarly across age groups, with no differences in symptoms or cardiac function. However, younger patients show distinct risk factors like higher tobacco use and lower rates of diabetes and hypertension.
Area of Science:
- Cardiology
- Vascular Medicine
Background:
- Left main coronary artery (LMCA) disease is a critical condition requiring prompt diagnosis and treatment.
- Understanding age-related variations in clinical presentation is essential for effective management.
Purpose of the Study:
- To investigate whether clinical signs and symptoms of significant LMCA disease differ between younger and older adult patients.
- To analyze age-associated differences in risk factor profiles for LMCA disease.
Main Methods:
- Retrospective analysis of 100 patients with > or =50% stenosis in the LMCA.
- Comparison of clinical presentation, electrocardiographic findings, left ventricular function, and risk factors between patients <50 years and those >=50 years.
Main Results:
- No significant differences were observed in initial symptoms, electrocardiographic findings, or left ventricular function between younger and older patient groups.
- Severe atherosclerosis was prevalent in both age cohorts.
- Younger patients exhibited a higher prevalence of tobacco use (79% vs. 39%) and lower rates of diabetes mellitus (10% vs. 34%) and hypertension (38% vs. 73%) compared to older patients.
Conclusions:
- Age does not appear to influence the clinical presentation or cardiac impact of LMCA disease.
- Distinct risk factor profiles exist for LMCA disease in younger versus older individuals, highlighting the need for age-specific preventive strategies.
Abstract:
Left main coronary artery (LMCA) disease is a potentially lethal disease that can be effectively treated if it is recognized expeditiously. To determine whether clinical signs and symptoms vary with age, we examined data from 100 patients with angiographically significant LMCA disease (> or =50% stenosis). The majority of patients had myocardial infarction (32%) or Braunwald class I unstable angina (46%). There were no differences in initial symptoms, electrocardiographic findings (normal or only nonspecific changes in 52% of patients), or left ventricular function (normal or only mildly impaired in 76% of patients) between younger patients (< 50 yr; n = 29) and older patients (n = 71). Severe atherosclerosis was common in both groups. Risk factor profiles were different, however, in that diabetes mellitus (10% vs. 34%; P = 0.028) and hypertension (38% vs. 73%; P = 0.002) were less common and tobacco use was more common (79% vs. 39%; P <0.001) in younger patients. In summary, age influenced the risk factors associated with but not the clinical signs and symptoms of LMCAD.
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