Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamic simulation of aortic valve stenosis using a lumped parameter
  cardiovascular system model with flow regime dependent valve pressure loss
  characteristics   Valvular heart diseases are growing concern in impoverished parts of the
world, such as Southern-Africa, claiming more than 31 % of total deaths related
to cardiovascular diseases. The ability to model the effects of regurgitant and
obstructive lesions on the valve body can assist clinicians in preparing
personalised treatments. In the present work, a multi-compartment lumped
parameter model of the human cardiovascular system is developed, with a newly
proposed valve modelling approach which accounts for geometry and flow regime
dependent pressure drops along with the valve cusp motion. The model is applied
to study various degrees of aortic stenosis using typical human cardiovascular
parameters. The results generated with the proposed model, are compared to
predictions using previously published valve modelling approaches and both sets
of results are compared to typical local and global physiological parameters
found in literature such left-ventricular systolic pressures, peak and mean
aortic valve pressure drops and vena contracta velocities. The results show
that the previously published valve models under predicts expected severely
stenosed peak and mean transvalvular pressure drops by approximately 47% and
30% respectively, whereas the newly proposed model under predicts the peak
pressure drop by 20% and over predicts mean pressure drop by 7%.

21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat