title: Balloon mitral commissurotomy: an intraoperative assessment.
abstract: OBJECTIVE
  Advances in balloon catheter technology have revolutionized the management of obstructive cardiovascular diseases. For lesions like mitral stenosis, balloon commissurotomy has emerged as an alternative to surgical relief showing definite functional benefits in a few clinical trials, albeit with variable results. Such variability necessitated objective evaluation of the efficacy of balloon mitral commissurotomy.
  
  
  METHODS
  The balloon mitral commissurotomy was carried out in 11 patients suffering from isolated mitral stenosis, under vision in a surgical setting. All patients were in NYHA class III/IV. Initially single balloon was used for mitral commissurotomy followed by double balloon, before completing the mitral valvotomy with surgical instruments whenever required. The commissural split was measured by firmly stretching the two commissures using nerve hooks and measuring the distance between the two hooks with the help of a caliper. Assessment of balloon dilation was made by calculating exact percentage of residual commissural split following balloon dilation as compared with completed mitral valvotomy. The exact percentage of commissural split was thus obtained by subtracting residual commissural split following balloon dilation from commissural split obtained after surgical open mitral valvotomy.
  
  
  RESULTS
  Complete commissurotomy using the balloon technique was possible in two (18.2%) patients. In the remaining nine (81.8%) patients, balloon expansion provided only 50% to 80% of commissural split and required instrumental completion with good results.
  
  
  CONCLUSIONS
  Balloon mitral commissurotomy, by virtue of its circumferential force, helps to develop a good cleavage and attains good hemodynamic improvement which may be life saving in critical mitral stenosis in selected group of patients with pliable mitral leaflets and minimal subvalvular pathology.
authors.affiliation: Department of Cardiothoracic Surgery, G.B. Pant Hospital, New Delhi, India.
authors.forename: R
authors.initials: R
authors.lastname: Gupta
authors.forename: S K
authors.initials: SK
authors.lastname: Khanna
authors.forename: A
authors.initials: A
authors.lastname: Banerjee
authors.forename: R C
authors.initials: RC
authors.lastname: Mishra
authors.forename: B K
authors.initials: BK
authors.lastname: Gupta
authors.forename: M
authors.initials: M
authors.lastname: Nigam
authors.forename: D K
authors.initials: DK
authors.lastname: Satsangi
authors.forename: A S
authors.initials: AS
authors.lastname: Tomar
authors.forename: D K
authors.initials: DK
authors.lastname: Tempe
authors.forename: R
authors.initials: R
authors.lastname: Arora
authors.forename: M
authors.initials: M
authors.lastname: Khalilullah
mesh_terms: D000293:Adolescent; D000328:Adult; D002404:Catheterization / Q000379:methods*; D004452:Echocardiography; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D008946:Mitral Valve Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery / Q000628:therapy*; D016343:Monitoring, Intraoperative; D011379:Prognosis; D016896:Treatment Outcome