Echocardiographic Parameter and Sleep Apnea Changes After Mitral Valve Surgery
Echocardiographic Parameter and Sleep Apnea Changes After Mitral Valve Surgery
The investigators evaluate the changes of echocardiographic and sleep apnea parameters after
 mitral valve surgery. The patients undergo echocardiographic and sleep apnea control before
 surgery. After a period of 3-5 months, they undergo a second echocardiographic and sleep
 apnea control and the results are evaluated.
Inclusion Criteria:

 -  mitral valve defect

 -  NYHA II-IV

 -  no additional cardiac surgical procedure

 Exclusion Criteria:

 -  Pregnancy

 -  lung disease

 -  regular follow-up in the study Center in the first 6 months after surgery not
 guaranteed

 -  congenital heart disease