Key result
Ruptured chordae tendineae is associated with V1 P-wave terminal negativity in ~73% of patients.
Why the study?
The clinical, hemodynamic, and electrocardiographic characteristics of mitral regurgitation secondary to ruptured chordae tendineae were not well described.
What are the electrocardiographic and hemodynamic findings in patients with mitral regurgitation secondary to ruptured chordae tendineae?
Observational (n=11)
What are the electrocardiographic and hemodynamic findings in patients with mitral regurgitation secondary to ruptured chordae tendineae?
A large terminal negative force in the P wave in lead V1 is a useful clinical indicator of increased left atrial pressure in recent-onset mitral regurgitation due to ruptured chordae tendineae.
ECG left atrial overload signs may occur despite normal LA size in chordae rupture; leaves open diagnostic role in mitral regurgitation.
The clinical, hemodynamic, and electrocardiographic findings in 11 patients with mitral regurgitation secondary to ruptured chordae tendineae are presented. Left atrial overloading, as manifested by a large terminal negative force in the P wave of lead V1, was present in 8 of the 11 patients. Six of the eight patients with this atrial abnormality had a normal size or minimally enlarged left atrium on chest x-ray films and angiography. Left ventricular hypertrohpy was present in 7 of the 11 patients and appeared to be related to the duration of cardiac symptoms. It is concluded that a large terminal negative force in the P wave in lead V1 is a useful clinical indicator of increased left atrial pressure in mitral regurgitation of recent onset. The electrocardiographic finding of left atrial overloading is to be expected in most cases of mitral regurgitation secondary to rupture of the chordae tendineae.
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Cooksey et al. (1976) conducted an observational in Mitral regurgitation secondary to ruptured chordae tendineae (n=11). Mitral regurgitation secondary to ruptured chordae tendineae was evaluated on Left atrial overloading (large terminal negative force in P wave of lead V1). A large terminal negative force in the P wave of lead V1, indicating left atrial overloading, was present in 8 of 11 patients with mitral regurgitation secondary to ruptured chordae tendineae.
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