Factors affecting technical success of fetal aortic valve dilation

Hemodynamic Factors Affecting the Functioning of the Aortic Valve

Early stages of aortic valve disease involve a subtle increase in leaflet stiffness which affects valve performance seen particularly in the opening and closing of the valve. In this study, a pulse duplicator which recreates physiologic flow waveforms was used to evaluate how changes in experimental conditions such as downstream resistance and flow rate affect the opening and closing patterns o...

Balloon Dilation of Congenital Aortic Valve Stenosis

We evaluated dilation technique (n=80) and aortic valve morphology by two-dimensional echocardiography (n = 58) in patients with congenital aortic valve stenosis to determine their influence on outcome. Patients' age (9 ± 9 years; range, 1 day-39 years) and a history of surgical valvotomy did not influence outcome. The number of dilating balloons (one vs. two) and balloon:annulus ratio based on...

Factors affecting long-term survival after aortic valve replacement.

BACKGROUND AND AIM To evaluate long-term outcomes of surgical aortic valve replacement (AVR) due to significant aortic stenosis (AS) and assess changes in factors affecting survival during a 10-year period in patients referred for surgery from a single centre. METHODS We evaluated 1143 patients (478 women, 665 men; mean age 61 ± 5 years) treated in the Department of Valvular Heart Disease at ...

Factors affecting myringoplasty success.

OBJECTIVE To identify factors that significantly influence myringoplasty success. METHODS A retrospective study was performed of all adults and children who underwent myringoplasty from January 2005 to January 2010 in a teaching hospital. Outcome measures were tympanic membrane perforation closure and air-bone gap closure to within 20 dB HL. The factors assessed were the surgeon grade, pre-op...

Factors Affecting Breeding Success