Echocardiographic abnormalities in acute rheumatic fever

Area of Science:

• Pediatric Cardiology
• Rheumatic Heart Disease
• Diagnostic Imaging

Background:

• Acute rheumatic fever can lead to significant cardiac complications, including valve regurgitation and congestive heart failure.
• Serial assessment of cardiac function is crucial for managing pediatric rheumatic heart disease.

Purpose of the Study:

• To evaluate echocardiographic parameters, specifically velocity of circumferential fiber shortening and left atrial dimension, in children with acute rheumatic fever.
• To correlate these echocardiographic findings with the presence and severity of congestive heart failure.

Main Methods:

• Serial echocardiography was performed on two groups of children with acute rheumatic fever.
• Group I: valve regurgitation without congestive heart failure (n=6).
• Group II: valve regurgitation with congestive heart failure (n=7).

Main Results:

• Initial velocity of circumferential fiber shortening was elevated in Group I (1.90 circ/sec) and decreased in Group II (1.18 circ/sec).
• Left atrial dimension was mildly increased in Group I and significantly increased in Group II.
• Rebound in velocity of circumferential fiber shortening during corticosteroid withdrawal suggested impaired contractility in Group II.

Conclusions:

• Echocardiographic parameters, velocity of circumferential fiber shortening and left atrial dimension, can differentiate severity of carditis in acute rheumatic fever.
• These measurements facilitate serial assessment and monitoring of cardiac status in affected children.
• Echocardiography is a valuable tool for assessing carditis severity in acute rheumatic fever.