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Prognostic implications of left ventricular function in endomyocardial disease in infants and children
Insights
Assessing chronic endomyocardial disease in children requires careful hemodynamic analysis. While left ventricular end-diastolic volume showed no prognostic difference, lower ejection fractions and higher left ventricular end-diastolic pressure indicated poorer outcomes.
Area of Science:
- Pediatric Cardiology
- Cardiovascular Physiology
- Clinical Investigation
Background:
- Chronic endomyocardial disease presents a significant challenge in pediatric populations.
- Understanding hemodynamic predictors of clinical course is crucial for patient management.
Purpose of the Study:
- To analyze hemodynamic factors from cardiac catheterization in pediatric patients with chronic endomyocardial disease.
- To correlate these factors with subsequent clinical outcomes, including survival and heart failure status.
Main Methods:
- Cardiac catheterization was performed on 40 infants and children with chronic endomyocardial disease.
- Hemodynamic parameters including left ventricular end-diastolic volume (LVEDV), ejection fraction (EjF), and left ventricular end-diastolic pressure (LVEDP) were measured.
- Patients were followed for 2 months to 11 years to assess clinical condition.
Main Results:
- No significant difference in LVEDV was observed among asymptomatic survivors, survivors with heart failure, and nonsurvivors.
- Ejection fractions were depressed in most patients and significantly lower in those who died.
- LVEDP was significantly higher in nonsurvivors compared to asymptomatic survivors, but with considerable overlap.
Conclusions:
- Left ventricular pressure-volume loops offer a potentially improved method for assessing left ventricular function and estimating stroke work.
- While LVEDP and EjF show prognostic trends, left ventricular pressure-volume loops may provide a more comprehensive assessment of hemodynamic status and clinical outcome in pediatric endomyocardial disease.
Abstract:
Hemodynamic factors measured at cardiac catheterization in 40 infants and children with chronic endomyocardial disease were analyzed in regard to subsequent clinical condition. The patients were followed for periods ranging from 2 months to 11 years (average 4.3 years) after initial cardiac catheterization. There were no statistically significant differences in left ventricular end-diastolic volume among survivors with no symptoms, survivors with persistent congestive heart failure, and nonsurvivors. Ejection fractions were depressed in about four fifths of patients with chronic endomyocardial disease and were significantly lower in the group of patients who died subsequently. LVEDP in patients who did not survive was significantly higher than in asymptomatic survivors, but there was too much overlapping of individual values to be of prognostic value. Left ventricular pressure-volume loops appeared to offer an improved, although more tedious, method of assessing LV function. In addition to offering information on LVEDV, LVEDP, and EjF, LV stroke work may easily be estimated from pressure-volume loops. There was generally good correlation between hemodynamic status assessed from pressure-volume loops and subsequent clinical outcome.