Appropriateness of the request for preoperative cardiological evaluation in non-cardiac surgery: 8-year experience in a high-volume cardiological center

Abstract

In the last decades the population undergoing non-cardiac surgery has become more numerous and complex. Cardiovascular perioperative complications represent at least one third of the perioperative deaths. Despite the pivotal role of the cardiologist in the perioperative management, current guidelines are often hardly useful in different settings of clinical practice. Local clinical protocols contribute to fill these gaps, to define the role of each specialist in the perioperative context and to achieve the best medical outcome. This single-center retrospective study analyzes the background of 33 463 preoperatory cardiologic visits, the adherence to scientific evidence in our institute and the impact of the implementation of a shared clinical protocol (CP) in terms of reduction of inappropriate requests of cardiological evaluations. Among all the patients, the mean age was 59 ± 18 years, 52.8% were male. Hypertension was the most prevalent disease followed by diabetes, chronic coronary syndrome and atrial fibrillation. The "low-risk surgery" category was the most represented (56.2%) and the vast majority of patients (70.1%) was totally free from predictors of perioperative cardiovascular events. After the introduction of the CP, the number of inappropriate evaluations decreased by 32%, mainly in the low-risk category. However, despite the overall reduction, almost two thirds of the evaluations were still deemed inappropriate according to the CP, mostly (82.9%) in the low-risk category and to a lesser degree (55%) in the moderate/high-risk category. The inappropriate use of the resources resulted in disappointing organizational performance, poor assistance quality and a huge number of inappropriate preoperatory evaluations. The implementation of a CP, developed on the basis of the local needs, is a useful tool to enhance the organizational standards for the cardiological evaluation of patients undergoing non-cardiac surgery. Regular verifications, a widespread knowledge of the guidelines and a more efficient system of management and surveillance may improve the appropriateness of these evaluations.