Electrocardiographic left axis deviation: Does it have a relationship with inferolateral perfusion defects?
Küçük Resim Yok
Tarih
2003
Yazarlar
Dergi Başlığı
Dergi ISSN
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Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Isolated reversible inferolateral perfusion defect is usually considered as true defect and not associated with false positive results due to attenuation artifact or technical processing. In order to investigate the diagnostic value of inferolateral reversible perfusion defect in predicting significant coronary artery stenosis we undertook a clinical study. We retrospectively and prospectively collected records of patients who underwent coronary angiography and demonstrated inferolateral reversible perfusion defect (n=21). Patients were divided into two groups according to presence or absence of significant CAD. Both groups were also compared according to their clinical characteristics, electrocardiographic QRS axis deviation and risk factors. Only 7 (33 %) patients had significant coronary artery disease (CAD) involvement. Left circumflex artery stenosis was detected in 6 (86 %) of 7 patients with CAD. Patients with CAD complained of anginal chest pain (86%) more frequently than patients without CAD (64%) (p=0.314). Since all patients with CAD had at least two-coronary risk factors, it determined the association of CAD with inferolateral reversible perfusion defect (p=0.015). It showed 100% sensitivity and negative predictive value for predicting CAD. Abnormal leftward mean QRS axis deviation on surface ECG was detected in 19 out of 21 study subjects (90%). Predicting CAD involvement in a patient with inferolateral reversible perfusion defect is more accurately established when the patient has multiple coronary risk factors. Leftward mean QRS axis deviation causing a change in heart position may cause a shift of usually observed inferior diaphragmatic attenuation to the inferolateral region and be responsible for reversible perfusion defects.
Açıklama
Anahtar Kelimeler
Artifact; Inferolateral Perfusion Defect; Ischemia; Left Axis, Adult; Aged; Angina Pectoris; Angiocardiography; Article; Clinical Feature; Controlled Study; Coronary Artery Circumflex Branch; Coronary Artery Disease; Coronary Artery Obstruction; Coronary Risk; Diagnostic Accuracy; Diagnostic Value; Diaphragm; Disease Association; Ecg Abnormality; Exercise Test; Female; Heart Muscle Perfusion; Human; Information Processing; Major Clinical Study; Male; Medical Record; Prediction; Qrs Complex; Sensitivity Analysis; Single Photon Emission Computer Tomography
Kaynak
Mediterranean Journal of Pacing and Electrophysiology
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
5
Sayı
4
