Validation of German Aortic Valve Score in a Multi-Surgeon Single Center

• Published in: Revista brasileira de cirurgia cardiovascular Vol. 32; no. 2; pp. 77 - 82
• Main Authors: Kalender, Mehmet, Baysal, Ahmet Nihat, Karaca, Okay Guven, Boyacioglu, Kamil, Kayalar, Nihan
• Format: Journal Article
• Language: English
• Published: Brazil Sociedade Brasileira de Cirurgia Cardiovascular 01-01-2017
• Subjects: Adult; Aged; Aged, 80 and over; Aortic Valve; Aortic Valve - surgery; Calibration; CARDIAC & CARDIOVASCULAR SYSTEMS; Cardiology; Coronary vessels; Electrocardiography; Female; Heart; Heart surgery; Heart Valve Diseases - mortality; Heart Valve Diseases - surgery; Heart Valve Prosthesis Implantation - mortality; Hospitals; Humans; Male; Middle Aged; Mortality; Original; Population; Retrospective Studies; Risk Assessment; Risk Assessment - methods; Risk Assessment - standards; Risk Grade; Sensitivity and Specificity; Statistical analysis; Surgeons; SURGERY; Turkey; Adult; Risk Assessment; Risk Grade; Aortic Valve
• ISSN: 0102-7638; 1678-9741; 1678-9741
• DOI: 10.21470/1678-9741-2016-0029

Risk assessment for operative mortality is mandatory for all cardiac operations. For some operation types such as aortic valve repair, EuroSCORE II overestimates the mortality rate and a new scoring system (German AV score) has been developed for a more accurate assessment of operative risk. In this study, we aimed to validate German Aortic Valve Score in our clinic in patients undergoing isolated aortic valve replacement.
A total of 35 patients who underwent isolated open aortic valve replacement between 2010 and 2013 were included. Patients with concomitant procedures and transcatheter aortic valve implantation were excluded. Patients' data were collected and analyzed retrospectively. Patients' risk scores EuroSCORE II were calculated online according to criteria described by EuroSCORE taskforce, Aortic Valve Scores were also calculated.
The mean age of patients was 61.14±13.25 years (range 29-80 years). The number of female patients was 14 (40%) and body mass index of 25 (71.43%) patients was in range of 22-35. Mean German Aortic Valve Score was 1.05±0.96 (min: 0 max: 4.98) and mean EuroSCORE was 2.30±2.60 (min: 0.62, max: 2.30). The Aortic Valve Score scale showed better discriminative capacity (AUC 0.647, 95% CI 0.439-0.854). The goodness of fit was x2HL=16.63; P=0.436). EuroSCORE II scale had shown less discriminative capacity (AUC 0.397, 95% CI 0.200-0.597). The goodness of fit was good for both scales. The goodness of fit was x2HL=30.10; P=0.610.
In conclusion, German AV score applies to our population with high predictive accuracy and goodness of fit.