Echocardiographic analysis of regional left ventricular wall motion in children after the arterial switch operation for complete transposition of the great arteries

Journal Article · Tue May 01 04:00:00 EDT 1990 · Journal of the American College of Cardiology; (USA)

DOI:https://doi.org/10.1016/S0735-1097(10)80033-6· OSTI ID:6870018

Vogel, M; Smallhorn, J F; Trusler, G A; Freedom, R M ^[1]

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1. Univ. of Toronto, Faculty of Medicine, Ontario (Canada)

Regional left ventricular wall motion was assessed by two-dimensional echocardiography in 21 patients with complete transposition of the great arteries at a mean of 2.2 years (range 0.3 to 7) after an arterial switch operation. Fourteen patients had undergone a two-stage and seven patients a primary repair. Twenty patients were found to have echocardiographic images adequate for wall motion analysis. The results of these studies were correlated with thallium-201 myocardial perfusion scans. Left ventricular wall motion was assessed by measuring regional area change in parasternal and apical views. After planimetry of an end-systolic and an end-diastolic frame, the ventricle was divided into eight equal segments and the percent area change was calculated. Both a fixed reference and a floating system correcting for translation and rotation were applied. The measurements in the patient group were compared with normal age-matched values previously obtained in 55 normal infants and children. Wall motion abnormalities, found in seven patients, were located at the apex in three, at the inferior septum and anterolateral wall in one and the inferior, anterolateral and lateral walls in one patient each. All had a myocardial perfusion defect in a corresponding anatomic location. One patient with a small reversible perfusion defect at the basilar septum had normal regional wall motion. The sensitivity of detecting impairment of myocardial perfusion was 0.95. Wall motion abnormalities were found only in patients who had undergone a two-stage repair. Echocardiographic wall motion analysis can be used as a screening method to identify patients with suspected myocardial ischemia after the arterial switch operation.

• OSTI ID: 6870018
• Journal Information: Journal of the American College of Cardiology; (USA), Journal Name: Journal of the American College of Cardiology; (USA) Vol. 15:6; ISSN 0735-1097; ISSN JACCD
• Country of Publication: United States
• Language: English

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62 RADIOLOGY AND NUCLEAR MEDICINE
AGE GROUPS
ARTERIES
BETA DECAY RADIOISOTOPES
BLOOD VESSELS
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
CHILDREN
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DIAGRAMS
DISEASES
ELECTROCARDIOGRAMS
ELECTRON CAPTURE RADIOISOTOPES
HEART
HEAVY NUCLEI
ISCHEMIA
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEDICINE
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SURGERY
THALLIUM 201
THALLIUM ISOTOPES
VASCULAR DISEASES