Læknablaðið - 15.11.2011, Page 15

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ENGLISH SUMMARY
Aortic valve replacement for aortic stenosis in lceland 2002-2006: Long term complications and survival
Viktorsson SA , Ingvarsdottir IL, Hreinsson K, Sigurdsson Ml, Helgadottir S, Arnorsson Th, Danielsen R, Gudbjartsson T
Objective: To investigate long-term complications and survival following aortic valve replacement (AVR) in patients with aortic stenosis (AS) in lceiand.
Material and methods: Included were 156 patients (average age 71.7 yrs, 64.7% males) that underwent AVR for AS at Landspitali between 2002 and
2006. A mechanical prosthesis was used in 29 patients (18.6%) and a bioprosthesis in 127. Long-term complications and operation-related admissions
were registered from hospital and outpatient records until April 1,2010. Overall survival was estimated and compared with the icelandic population of the
same age and gender.
Results: The mean preop. EuroSCORE(st) was 6.9%, the max. transvalvular pressure gradient 74.1 mmHg and the left ventricular ejection fraction (LVEF)
(57.2%). At six months following AVR the maximal pressure gradient was 19.8 mmHg (range; 2.5-38). Echocardiography results were not available for
23.6% of the patients 6 months postoperatively. In the follow-up period one in four patients was admitted due to valve-related problems. Re-admission
rate was 6.0/100 patient-years (pt-y); most commonly due to cardiac failure (1.7/100 pt-y), emboli (1.6/100 pt-y), hemorrhage (1.6/100 pt-y), endocarditis
(0.7/100 pt-y) and myocardial infarction (0.4/100 pt-y). Survival at 1 and 5 year was 89.7% and 78.2%, respectively, making survival comparable to the
estimated survival of lcelanders of the same age and gender.
Conclusions: The rate of long-term complications following AVR in lceland is in line with other studies. The same applies to long-term survival, which was
similar to that of the lcelandic population of the same age and gender.
Key words: Aortic valve replacement, aortic stenosis, heart surgery, results, iong-term complication, survival.
Correspondence: Tómas Guðbjartsson, tomasgud<dlandspitali.is
LÆKNAblaðið 2011/97 595