Sound Heart's cardiac-surgery quality indicators are nationally recognized:

Overlake has been ranked among the top 100 cardiac care hospitals in the country by Solucient. The study concluded that Overlake has significantly higher survival rates, lower rates of complications and shorter lengths of hospital stays.
Overlake stresses sharing best practices and is participating in a regional collaboration to advance surgical infection prevention.
Patients who complete the Sound Heart cardiac rehabilitation program at Evergreen show an improvement in their cholesterol levels, a reduced depression score and reduced body mass index. This program is now available at Overlake. Sound Heart's Cardiac Enhancement Center measures patient outcomes with a depression scale monitored over a period of weeks, a six-minute walking test, the Minnesota Living with Heart Failure test (which measures quality of life) and hospital readmission rates.