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Perioperative myocardial infarction diagnosed by /sup 99m/Tc stannous pyrophosphate myocardial scintigrams

Journal Article · · Circulation; (United States)
OSTI ID:7106945
; ; ; ; ; ;

Two groups of patients have been studied using /sup 99m/Tc stannous pyrophosphate myocardial imaging prior to and 3 to 5 days after myocardial revascularization. The first group consisted of 48 patients undergoing revascularization, including 26 with unstable angina and seven with concomitant valve replacement. There were 3 deaths (6 percent), and the incidence of perioperative infarction by electrocardiogram (ECG) and enzyme analysis was 6/48 (12 percent), while 15 of 48 (31 percent) had positive myocardial scintigrams. The second group of 29 patients included one nonischemic death (3 percent) that was excluded. The operative technique was changed (optical magnification used, silastic tapes avoided, venting avoided, while aortic cross clamping was used frequently). In this latter group two of 29 (7 percent) had ECG evidence of infarction while four of 28 (14 percent) had positive scintigrams, compared to the previous incidence of 31 percent. The imaging technique is simple, reliable, and probably more sensitive in the postoperative setting than ECG and enzyme analysis. It appears useful in evaluating the influence of changes in operative technique on myocardial preservation.

Research Organization:
Univ. of Texas, Dallas
OSTI ID:
7106945
Journal Information:
Circulation; (United States), Journal Name: Circulation; (United States) Vol. 54:6; ISSN CIRCA
Country of Publication:
United States
Language:
English

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Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
COUNTING TECHNIQUES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
HEART
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MUSCLES
MYOCARDIAL INFARCTION
MYOCARDIUM
NUCLEI
ODD-EVEN NUCLEI
ORGANS
OXYGEN COMPOUNDS
PATIENTS
PHOSPHORUS COMPOUNDS
PYROPHOSPHATES
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
TECHNETIUM 99
TECHNETIUM ISOTOPES
YEARS LIVING RADIOISOTOPES