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Left ventricular diastolic dysfunction in patients with angina decubitus
1Cardiovascular Institute, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing.
Insights
Patients experiencing angina decubitus exhibit impaired left ventricular diastolic function and reduced ventricular compliance. This study highlights diastolic dysfunction as a key factor in angina decubitus episodes.
Area of Science:
- Cardiology
- Cardiovascular Physiology
Background:
- Angina decubitus is a chest pain symptom often associated with cardiac conditions.
- Understanding the underlying mechanisms of angina decubitus is crucial for effective management.
Purpose of the Study:
- To investigate the relationship between left ventricular diastolic dysfunction and angina decubitus.
- To identify potential pathophysiological links between diastolic abnormalities and chest pain during recumbency.
Main Methods:
- Comparative study involving three groups: healthy controls, coronary artery disease patients without angina decubitus, and patients with angina decubitus and preserved ejection fraction.
- Left ventriculography (LVG) was performed to assess left ventricular function, including first 1/3 filling fraction (1/3FF) and end-diastolic pressure (LVEDP).
Main Results:
- A significantly reduced left ventricular first 1/3 filling fraction (1/3FF) was observed in patients with angina decubitus compared to controls and CAD patients without angina decubitus (P < 0.01).
- Left ventricular end-diastolic pressure (LVEDP) significantly increased post-LVG in angina decubitus patients (P < 0.01), indicating impaired ventricular compliance.
- No significant changes in LVEDP were noted before and after LVG in control or non-angina decubitus CAD groups.
Conclusions:
- Patients with angina decubitus demonstrate significant abnormalities in left ventricular diastolic filling.
- A decrease in left ventricular compliance is a characteristic finding in patients suffering from angina decubitus.
Objective:
To investigate the relationship between left ventricular diastolic dysfunction and episodes of angina decubitus.
Methods:
The study population consisted of three groups, groups I (20 controls) had no cardiovascular diseases. Group II (20 patients) had coronary artery disease (CAD) without angina decubitus. Group III (24 cases with ejection fraction (EF) > 45%) were selected from 26 patients with angina decubitus.
Results:
Left ventriculography (LVG) showed that left ventricular (LV) first 1/3 filling fraction (1/3FF) was significantly reduced in groups III as compared with groups II and I (P < 0.01). Left ventricular end-diastolic pressure (LVEDP) significantly increased in patients with angina decubitus after LVG as compared with that before LVG (P < 0.01). However, there were no statistically differences in LVEDP, before and after LVG in both groups II and I.
Conclusions:
Patients with angina decubitus have abnormalities of LV diastolic filling and decrease in LV compliance.
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