Quality improvement in cardiovascular surgery: results of a surgical quality improvement programme using a nationwide clinical database and database-driven site visits in Japan

Changes in Surgical Outcomes in a Statewide Quality Improvement Collaborative with Introduction of Simultaneous, Comprehensive Interventions

BACKGROUND

Surgical quality improvement collaboratives (QICs) aim to improve patient outcomes through coaching, benchmarked data reporting, and other activities. Although other regional QICs have formed organically over time, it is unknown whether a comprehensive quality improvement program implemented simultaneously across hospitals at the formation of a QIC would improve patient outcomes.

STUDY DESIGN

Patients undergoing surgery at 48 hospitals in the Illinois Surgical Quality Improvement Collaborative (ISQIC) were included. Risk-adjusted rates of postoperative morbidity and mortality were compared from baseline to year 3. Difference-in-differences analyses compared ISQIC hospitals with hospitals in the NSQIP Participant Use File (PUF), which served as a control.

RESULTS

There were 180,582 patients who underwent surgery at ISQIC-participating hospitals. Inpatient procedures comprised 100,219 (55.5%) cases. By year 3, risk-adjusted rates of death or serious morbidity decreased in both ISQIC (relative reduction 25.0%, p < 0.001) and PUF hospitals (7.8%, p < 0.001). Adjusted difference-in-differences analysis revealed that ISQIC participation was associated with a significantly greater reduction in death or serious morbidity (odds ratio 0.94, 95% CI 0.90 to 0.99, p = 0.01) compared with PUF hospitals. Relative reductions in risk-adjusted rates of other outcomes were also seen in both ISQIC and PUF hospitals (morbidity 22.4% vs 6.4%; venous thromboembolism 20.0% vs 5.0%; superficial surgical site infection 27.3% vs 7.7%, all p < 0.05), although these difference-in-differences did not reach statistical significance.

CONCLUSIONS

Although complication rates decreased at both ISQIC and PUF hospitals, participation in ISQIC was associated with a significantly greater improvement in death or serious morbidity. These results underscore the potential of QICs to improve patient outcomes.

The Search for an Outcome Variable That Measures Both Quality and Processes in Cardiac Surgery: Comparing the Quality Process Index and Mortality

BACKGROUND

The translation of a large quantity of data into valuable insights for daily clinical practice is underexplored. A considerable amount of information is overwhelming, making it difficult to distill and assess quality and processes at the hospital level. This study contributes to this necessary translation by developing a Quality Process Index that summarizes clinical data to measure quality and processes.

METHODS

The Quality Process Index was constructed to enable retrospective analyses of quality and process evolution from 2011 to 2021 for various surgery types in the Amsterdam Cardiosurgical Database (n = 5497). It is presented alongside mortality rates, which are the golden standard for quality measurement. The two outcome variables are compared as quality and process measurement options.

RESULTS

Results showed that the mean Quality Process Index appeared rather stable, even though analysis of variance found that the mean Quality Process Index differed significantly over the years (p < 0.001). The 30-day and 120-day mortality rates appeared to fluctuate more, but interestingly, we failed to reject the null hypothesis of equal means. The Quality Process Index and mortality rates were statistically negatively correlated, and the extent of correlation was more pronounced with the 120-day mortality rate, as computed using the Pearson correlation coefficient r (30-day rQPI,30 = -0.07, p < 0.001 and 120-day mortality rates rQPI,120 = -0.12, p < 0.001).

CONCLUSIONS

The Quality Process Index seeks to address the need to translate data for quality and process improvement in healthcare. While mortality remains the most impactful outcome measure, the Quality Process Index provides a more stable and comprehensive measurement of quality and process improvement or deterioration in healthcare. Therefore, the Quality Process Index as a quantification reinforces the understanding of the definition of quality and process improvement.

Effect of procedural volume on the outcomes of congenital heart surgery in Japan

OBJECTIVES

The present study developed a new risk model for congenital heart surgery in Japan and determined the relationship between hospital procedural volume and mortality using the developed model.

METHODS

We analyzed 47,164 operations performed between 2013 and 2018 registered in the Japan Cardiovascular Surgery Database-Congenital and created a new risk model to predict the 90-day/in-hospital mortality using the Japanese congenital heart surgery mortality categories and patient characteristics. The observed/expected ratios of mortality were compared among 4 groups based on annual hospital procedural volume (group A [5539 procedures performed in 90 hospitals]: ≤50, group B [9322 procedures in 24 hospitals]: 51-100, group C [13,331 procedures in 21 hospitals]: 101-150, group D [18,972 procedures in 15 hospitals]: ≥151).

RESULTS

The overall mortality rate was 2.64%. The new risk model using the surgical mortality category, age-weight categories, urgency, and preoperative mechanical ventilation and inotropic use achieved a c-index of 0.81. The observed/expected ratios based on the new risk model were 1.37 (95% confidence interval, 1.18-1.58), 1.21 (1.08-1.33), 1.04 (0.94-1.14), and 0.78 (0.71-0.86) in groups A, B, C, and D, respectively. In the per-procedure analysis, the observed/expected ratios of the Rastelli, coarctation complex repair, and arterial switch procedures in group A were all more than 3.0.

CONCLUSIONS

The risk-adjusted mortality rate for low-volume hospitals was high for not only high-risk but also medium-risk procedures. Although the overall mortality rate for congenital heart surgeries is low in Japan, the observed volume-mortality relationship suggests potential for improvement in surgical outcomes.

Contemporary use and trends in percutaneous coronary intervention in Japan: an outline of the J-PCI registry

Cardiovascular interventions have achieved a level of excellence, with many outstanding advanced techniques and results. The mission of the Japanese Association of Cardiovascular Intervention and Therapeutics (CVIT) is to further our understanding of cardiovascular intervention and establish its procedural safety. [1] The Japanese Percutaneous Coronary Intervention (J-PCI) registry was established and sponsored by CVIT, and aims to provide basic statistics on the performance of percutaneous coronary interventions (PCI) in Japan. Today, the database has grown to become one of the largest healthcare procedural database with more than 200,000 cases registered annually from approximately 900 institutions in Japan representing over 90% of all PCI hospitals in the nation. Importantly, case registrations in the J-PCI registry are essential for coronary interventionalist and educating hospital certification. The present manuscript aimed to summarize the history of the J-PCI registry and outline the definitions of various items.