The proportion of normal myocardial perfusion imaging results increased from 53% in 2000 to 62% in 2023 despite stable pretest probability (20% to 21%).
Have the rates of normal myocardial perfusion imaging scans and pretest probability changed over time between 2000 and 2023?
The proportion of normal myocardial perfusion imaging scans significantly increased over 23 years despite unchanged pretest probability, suggesting a need for better patient preselection to reduce unnecessary diagnostic tests.
Absolute Event Rate: 0% vs 0%
Abstract Introduction A high proportion of patients referred for coronary artery disease (CAD) testing with myocardial perfusion imaging (MPI) have normal test results. With decreasing prevalence of CAD and overestimation of pre-test probability (PTP) by existing models, normal tests results have continuously increased over time. Purpose This study aimed to evaluate temporal trends of normal scan results over 23 years in a large referral center in Switzerland. Material 0.001) (figure 1). SRS and SSS, but not SDS decreased over time (figure 2). In multivariate regression analysis, the year of exam was a significant predictor for normal MPI (OR 1.026 (95% CI 1.023-1.029), p 0.001). PTP remained unchanged over time (20% in 2000 vs. 21% in 2023) (figure 1). Conclusion The proportion of normal scan results significantly increased over 23 years, whereas PTP remained unchanged. To counter this trend and reduce unnecessary diagnostic tests, patient preselection must further be optimized.
Schneider et al. (Sat,) reported a other. The proportion of normal myocardial perfusion imaging results increased from 53% in 2000 to 62% in 2023 despite stable pretest probability (20% to 21%).