Ribed by contingency tables and analyzed with the 2 test. viagra without a doctor prescription Corresponding 95% confidence intervals (cis) are calculated by means of sisa online statistical analysis. cheap viagra on line Kaplan-meier estimates of freedom from reoperation and degree of aortic regurgitation were calculated with a commercially available software package (prism; graphpad inc, san diego, calif).    results top abstract patients and methods results discussion references   there were significant differences between the groups, mostly related to different patient characteristics. viagra online without prescription Among patients with bicuspid aortic valves, patients were younger (p<. 001), fewer patients required emergency operations for acute dissection (p=. 006), and there was less need for arch replacement (p<. 001) and concomitant coronary bypass surgery (p=. 037; table 1). Consequently, extracorporeal circulation (p=. risks of taking expired viagra 001), myocardial ischemia (p=. 001), and circulatory arrest (p=. 04) times were shorter in the presence of bicuspid aortic valves. Myocardial ischemic times for isolated remodeling (ie, without concomitant cardiac surgery) were identical in group a (75 ± 8 minutes) and group b (77 ± 11 minutes). View this table: [in this window] [in a new window]   table 1. Clinical data of 190 patients having undergone root remodeling in the presence of bicuspid or tricuspid aortic valve anatom   in-hospital mortality for all patients was 4. 2% (8/190; 95% ci, 1. 8%-8. 1%). viagra online overnight delivery usa No patient died after repair of a bicuspid aortic valve (0/60; 95% ci, 0. 05%-6%). Of the 8 patients who died in group b (6. viagra vision 2%; 95% ci, 3. 2%-12. viagra bayer opinie 7%), 3 had undergone operations for acute dissection. Mortality in group b was thus 5% (5/100; 95% ci, 1. 6%-11. 3%) after elective procedures and 10% (3/30; 95% ci, 2. buy viagra without prescription 1%-26. online to buy viagra or cialis 5%) after emergency procedures. The causes of death were mesenteric ischemia with sepsis and multiple organ failure (n = 5), cerebral ischemia (n = 1), pulmonary embolism (n = 1), and left ventricular failure (n = 1). One patient in group a and 5 patients in group b required re-exploration for bleeding (p=. 42). The preoperative degree of aortic regurgitation was 2. 5 ± 0. 9 in group a and 2. 8 ± 0. 8 in group b (p=. where can i get viagra yahoo 24). This was reduced to 0. 8 ± 0. 7 in group a and 0. 9 ± 0. 8 in group b at discharge. The degree of regurgitation remained constant in most patients, but there was progression in 15 patients (4 with bicuspid aortic valves and 11 with tricuspid aortic valves). This includes the 4 patients who underwent subsequent reoperation for significant recurrent aortic insufficiency. Survival at 1, 3, and 5 years was 100% in group a and 93%, 87%, and 82% in group b, respectively (p=. 004). There was no episode of thromboembolism or en.