Septal Myectomy - Outcomes

Outcomes

Septal myectomy is associated with a low perioperative mortality and a high late survival rate. A study at the Mayo Clinic found surgical myectomy performed to relieve outflow obstruction and severe symptoms in HCM was associated with long-term survival equivalent to that of the general population, and superior to obstructive HCM without operation. The results are shown below:

Survival (all-cause mortality) *
Years	With surgery	Without surgery
1	98%	90%
5	96%	79%
10	83%	61%

Survival (HCM-related death)
Years	With surgery	Without surgery
1	99%	94%
5	98%	89%
10	95%	73%

Survival (sudden cardiac death)
Years	With surgery	Without surgery
1	100%	97%
5	99%	93%
10	99%	89%

* Includes 0.8% operative mortality.

Read more about this topic: Septal Myectomy