To analyze and assess the feasibility of combined application of Cardiopulmonary Exercise Testing (CPET) and Myocardial Perfusion Imaging (MPI) for predicting the perioperative main adverse cardiovascular events (MACEs) rate in high⁃risk coronary artery disease patients before major non⁃cardiac surgery.
Methods
2
We reviewed 61 patients with high⁃risk coronary artery who underwent a major non⁃cardiac surgery. Both CPET and MPI were preoperatively applied
which did not suggest exact myocardial ischemia. MACEs were observed in their perioperative period
which include new⁃onset arrhythmias
congestive heart failure
acute myocardial infarction (AMI)
coronary artery revascularization for narrowed vessels
non⁃lethal cardiac arrest
and cardiac death.
Results
2
Among the 61 patients
25 patients were found at least one of the coronary arteries with stenosis degree exceeding 70% based on coronary computed tomographic angiography (CTA)
while 36 patients were found all coronary arteries with stenosis degree below 70%. There were 4 patients
assessed as high risk by CPET and MPI (peakVO
2
≥15 ⁃
<
20 mL•min
-1
·kg
-1
and MPI indicating mild myocardial ischemia
or peakVO
2
<
15 mL•min
-1
·kg
-1
)
and the remaining 57 patients were considered at low risk. There was no significant consistency between the results of the two examinations and the degree of coronary stenosis (
P
>
0.05). Postoperatively
at least one MACE happened in only three patients
with one patient experiencing acute myocardial infarction and undergoing coronary revascularization
one patient developing congestive heart failure
and one patient having new⁃onset arrhythmia. No death case were found. Among the high⁃risk group
one patient was diagnosed with perioperative acute myocardial infarction and underwent coronary intervention
while two patients in the low⁃risk group experienced heart failure and arrhythmia during the perioperative period
respectively.
Conclusion
2
The application of Cardiopulmonary Exercise Testing and Myocardial Perfusion Imaging for preoperative assessment of cardiac function in patients with high⁃risk coronary artery disease undergoing major non⁃cardiac surgery to predict the risk of perioperative cardiovascular events is feasible. However
due to the small sample size of this study
further exploration is needed to validate the conclusion.
关键词
Keywords
references
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