qfatima
Forum Newbie
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can any one tell me most imp differentiating points between restrictive cardiomyopathy n constrictive pericarditis.
thanks
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| yash12
Forum Newbie
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I will try to diffrentiate both of them on the same points :
Constrictive;
Extra sounds in diastole Early S3, high pitched "pericardial knock". No S4
Restrictive:
Later S3, low pitched, "triple rhythm". S4 in some cases
Constric./Restric:
Mitral or tricuspid regurgitation Usually absent in other case it is present
Constric.
ECG P waves reflect intra-atrial conduction delay. Atrioventricular or intraventricular conduction defects rare
Restr.-ECG- P waves reflect right or left atrial hypertrophy or overload. Atrioventricular or intraventricular conduction defects not unusual
Constr.- CX-ray - Pericardial calcification in 20-30%
Restr.-Pericardial calcification rare
Const.-Dip-plateau waveform in the right ventricular pressure waveform End diastolic pressure more than one third of systolic pressure in many cases
Restri.-End diastolic pressure often less than one third of systolic pressure
Constr- Paradoxical pulse Often present in another case it is absent
Constr.- MR/CT imaging Shows thick pericardium in most cases but in restric. it is rare
Constr.- Endomyocardial biopsy Normal, or non-specific abnormalities but in Restrictive-Shows amyloid in some cases
Const.- Past medical history Previous pericarditis, cardiac surgery, trauma, radiotherapy, connective tissue disease in Rest. all these are rare
There are many more 
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| doyoudig
Forum Guru
Topics: 144
Posts: 613
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also differentiated by Cardiac Muscle Mass
Normal in - Constrictive
Abn in - Restrictive
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| qfatima
Forum Newbie
Topics: 10
Posts: 20
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thanks
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