The outcome in patients with dilated cardiomyopathy can be predicted using 2 scores calculated from electrocardiographic and clinical findings.
First Principal Component Axis (I)
prolongation of the QRS interval
left axis deviation
high grade ventricular arrhythmia
NYHA functional classification
I or II
cardiothoracic ratio in percent
>= 55 to < 65%
left ventricular end diastolic pressure in mm Hg
< 18 mm Hg
>= 18 mm Hg
ejection fraction in percent
Second Principal Component Axis (II)
• The representation of the ">" and "<" in the original tables differs from the expected manner (being placed to the left or right of the number); the directions above are hopefully correct.
first principal component axis score (I) =
= SUM(scores for all 9 parameters)
second principal component axis score (II) =
= SUM(scores for all 6 parameters)
• If the first principal component axis score is <= 0, then the patient has a good chance for survival. Patients with the first principal component axis score > 0 have a high risk of death.
• For those patients with poor prognosis, if the second principal component axis score is >=0 then sudden death is more likely; if the second principal component axis score is < 0, then severe refractory heart failure can be expected.
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Purpose: To predict the prognosis for a patient with dilated cardiomyopathy based on electrocardiographic and clinical findings.
Objective: criteria for diagnosis, severity, prognosis, stage