Heinrich Schima

Systemic pressure does not directly affect pressure gradient and valve area estimates in aortic stenosis in vitro (2008)

Mascherbauer, Julia, Fuchs, Christina, Stoiber, Martin, Schima, Heinrich, Pernicka, Elisabeth, Maurer, Gerald, ...

Aims Hypertension is a frequent finding in patients with aortic stenosis (AS). However, controversial data about the influence of systemic blood pressure on the quantification of AS have been...

Synergies between Statistical Data Analysis and Neural Networks in the Control of Rotary Blood Pumps (2007)

Georg Dorffner, Christian Stocklmayer, Christian Schmidt, Heinrich Schima

In this paper we report about the application of multilayer perceptrons to three important tasks in the control of rotary blood pumps, namely the estimation of left atrium pressure, and the...

Value and limitations of aortic valve resistance with particular consideration of low flow-low gradient aortic stenosis: an in vitro study (2004)

Mascherbauer, Julia, Schima, Heinrich, Rosenhek, Raphael, Czerny, Martin, Maurer, Gerald, Baumgartner, Helmut

Background The calculation of valve resistance (R) rather than aortic valve area (AVA) has been proposed for the assessment of aortic stenosis (AS), based on the claim that it is less flow-dependent....