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Grading the severity of congestive heart failure in infants
R D Ross1, R O Bollinger, W W Pinsky
1Department of Pediatrics, Children's Hospital of Michigan, Wayne State University School of Medicine, Detroit.
Insights
Identifying congestive heart failure (CHF) in infants requires specific clinical indicators. Key signs include feeding issues, abnormal breathing patterns, and hepatomegaly for accurate diagnosis and severity grading.
Area of Science:
- Pediatric Cardiology
- Neonatal Health
Background:
- Congestive heart failure (CHF) in infants presents diagnostic challenges.
- Accurate identification of CHF indicators is crucial for timely intervention.
Purpose of the Study:
- To identify the most accurate clinical and historical variables for defining and grading CHF severity in infants.
- To establish objective criteria for pediatric cardiologists assessing infant CHF.
Main Methods:
- Four pediatric cardiologists evaluated 41 infants (median age 2.5 months) for CHF presence and severity.
- Assessment included feeding habits, respiratory/heart rates, perfusion, edema, and hepatomegaly.
- Statistical analysis identified sensitive and specific variables for CHF diagnosis.
Main Results:
- Feeding volume (<3.5 oz/feed), respiratory rate (>50/min), abnormal respiratory pattern, diastolic filling sounds, and hepatomegaly were most sensitive/specific for CHF presence (p<0.0001).
- Moderate to severe CHF correlated with reduced feeding volume/time, elevated respiratory rate, abnormal patterns, and moderate hepatomegaly.
- Severe CHF was associated with high heart rate (>170/min), decreased perfusion, and severe hepatomegaly.
Conclusions:
- Accurate grading of infant CHF severity necessitates a detailed assessment of specific historical and clinical variables.
- Established criteria aid in differentiating between mild, moderate, and severe cases of congestive heart failure in neonates.
Abstract:
To determine which variables most accurately define congestive heart failure (CHF) in infants, 41 patients (median age 2.5 months) were graded by four pediatric cardiologists for the presence and severity of CHF based on the following variables: amount of formula consumed per feeding, feeding time, history of diaphoresis or tachypnea, growth parameters, respiratory and heart rates, respiratory pattern, perfusion, presence of edema, diastolic filling sounds, and hepatomegaly. There were 19 patients graded as having no CHF, nine as mild, seven moderate, and six severe CHF. The most sensitive and specific variables (p less than 0.0001) for the presence of CHF were a history of less than 3.5 oz/feed, respiratory rate greater than 50/min, an abnormal respiratory pattern, diastolic filling sounds, and hepatomegaly. Moderate to severe CHF was present when patients took less than 3 oz/feed or greater than 40 min/feed, had an abnormal respiratory pattern with a resting respiratory rate greater than 60/min, and had a diastolic filling sound and moderate hepatomegaly. Severe CHF was accompanied by a heart rate greater than 170/min, decreased perfusion, and severe hepatomegaly. Thus, the grading of the severity of CHF in infants should include an accurate description of these historical and clinical variables.