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Left ventricular function in ischaemic heart disease. A review
Insights
Left ventriculography reveals key abnormalities in ischaemic heart disease. Abnormal ventricular responses to exercise indicate ischaemia and can improve with revascularization surgery.
Area of Science:
- Cardiology
- Diagnostic Imaging
Background:
- Left ventriculography is crucial for assessing ischaemic heart disease.
- Coronary arteriography aids in identifying aneurysms associated with blocked arteries.
Purpose of the Study:
- To discuss the clinical significance of left ventriculography findings in ischaemic heart disease.
- To correlate imaging findings with acute and chronic ischaemia.
Main Methods:
- Utilizing left ventriculography and coronary arteriography to detect aneurysms.
- Observing localized abnormal contractions at rest and during stress (exercise or atrial pacing).
Main Results:
- Aneurysms are identified by obliterated supplying arteries.
- Abnormal contractions at rest suggest myocardial infarction.
- Ischaemia is indicated by abnormal ventricular response to exercise, even without angina.
Conclusions:
- Left ventriculography effectively identifies infarcts and acute ischaemia.
- Exercise-induced ischaemia can be detected non-invasively.
- Successful revascularization surgery can reverse abnormal ventricular responses.
Abstract:
The clinical significance of the abnormalities seen at left ventriculography in ischaemic heart disease is discussed. Aneurysms may be recognized when left ventriculography is combined with coronary arteriography to show the characteristic obliteration of the supplying artery. Localized areas of abnormal contraction seen at rest are almost certainly indicative of infarcts. Similar areas provoked by exercise or atrial pacing represent the site of acute ischaemia. The ischaemic ventricle may be recognized by abnormal response to exercise, even in the absence of angina. The abnormal response may be reversed by successful revascularization surgery.