Assessment of myocardial perfusion in patients after the arterial switch operation

Journal Article · Fri Feb 01 00:00:00 EST 1991 · Journal of Nuclear Medicine; (USA)

OSTI ID:5893541

Vogel, M; Smallhorn, J F; Gilday, D; Benson, L N; Ash, J; Williams, W G; Freedom, R M ^[1]

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

In 21 patients who had undergone the arterial switch operation, the adequacy of myocardial perfusion was evaluated by thallium-201 computed scintigraphy 2.6 +/- 2 (0.3-7) yr after surgery. Fourteen patients had undergone the arterial switch procedure after pulmonary artery banding and seven as a primary repair. Isoproterenol stress increased the heart rate by at least 55%. Tomographic imaging was performed at peak stress and 3 hr later in the reperfusion phase. Nine patients had perfusion defects. The perfusion defects were located at the left ventricular apex in four (with extension to the inferolateral wall in one), left ventricular anterolateral wall in two, ventricular septum in one, left ventricular inferior wall in one, and right ventricular free wall in one. Some of these defects could be due to myocardial damage at the time of surgery, but these results also raise concern about long-term adequacy of myocardial perfusion following the arterial switch procedure.

• OSTI ID: 5893541
• Journal Information: Journal of Nuclear Medicine; (USA), Vol. 32:2; ISSN 0161-5505
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
CARDIOVASCULAR DISEASES
DIAGNOSIS
HEART
SCINTISCANNING
CORONARIES
EXERCISE
PATIENTS
THALLIUM 201
ARTERIES
BETA DECAY RADIOISOTOPES
BLOOD VESSELS
BODY
CARDIOVASCULAR SYSTEM
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ORGANS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
THALLIUM ISOTOPES
550601* - Medicine- Unsealed Radionuclides in Diagnostics