Q WAVE REGRESSION AS A PREDICTOR FOR MYOCARDIAL VIABILITY

Eman Sayed Mohamed,

Abstract


Coronary artery disease is the most common cause of heart failure in the Western world. Left ventricular impairment is the single most important predictor of mortality after myocardial infarction. The prognosis of patients with severe impairment is poor, but may be improved by revascularizRtion if the impaired myocardium is viable
(Brookes et al., 1995 and Allman et at., 20.02). However,
perioperative mortality is high in this group of patients who do not demonstrate significant viable myocardium (Senior and Lahiri,
2001).
Clinical decision making for the selection of patients with CAD
and depressed left ventricular function for coronary revascularization
is very critical but at times difficult. There is strong evidence of an increased event rate (myocardial infarction, death, unstable angina) in one fourth of patients with viable myocardium who are treated medically compared with only one sixteenth after revascularization
(Al-Khouri and Narula, 2000). DocumentatiOn of the presence of
viable myocardium best allows identification of patients who are most
likely to benefit from coronary revascularlzation as evident by postoperative improvement in LV systolic function, exercise capacity, quality of life, or survival. On the other hand, identi(ying patients who . would not demonstrate significant improvement is equally important
in view of the high morbidity and mortality rates associated with
surgery in such patients (Al-Khouri and Narula, 2000).
Currently, detection of viable m 'ocardiurn has become an important component of the assessment of patients with CAD and depressed LV function. The most frequently used diagnostic methods for this are echocardiographic or scintigraphic techniques; unfortunately, these techniques are operator sensitive or expensive
{Mobilia et al., 2000).


Other data

Title Q WAVE REGRESSION AS A PREDICTOR FOR MYOCARDIAL VIABILITY
Other Titles تراجع موجة كيو كوسيلة للتكهن بعيوشة عضلة القلب
Authors Eman Sayed Mohamed
Issue Date 2002
URI http://research.asu.edu.eg/handle/123456789/172833

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