Meeting abstract

https://doi.org/10.15836/ccar2019.228

Careful preoperative planning of aortic valve surgery – impact of echocardiography and CT parameters

Josip Varvodić ; University Hospital Dubrava, Zagreb, Croatia
Dubravka Šušnjar ; University Hospital Dubrava, Zagreb, Croatia
Ivana Jurin ; University Hospital Dubrava, Zagreb, Croatia
Jasenka Grgurić ; University of Zagreb, School of Medicine, Zagreb, Croatia
Boris Starčević ; University Hospital Dubrava, Zagreb, Croatia
Frane Paić ; University of Zagreb, School of Medicine, Zagreb, Croatia
Igor Rudež ; University Hospital Dubrava, Zagreb, Croatia

Abstract

Objective: We can observe an increase in incidence and prevalence of patients with aortic valve stenosis
in the general population. The gold standard in aortic valve therapy is aortic valve replacement.
Preoperative planning is essential for good outcomes, as the severity of stenosis and calcifications can
sometimes be extremely progressive and even involve the aortic root and ascending aorta. There is not
enough research on comparation of CT scan analysis of aortic valve stenosis and echocardiography
which is the golden standard of disease diagnosis.1-3
Patients and Methods: We have analyzed 88 patients [age: 70.01±9.066 (mean±SD); female: n=45, 51.1%].
Among the patients, 12 had bicuspid aortic valve leaflet structure while the rest of the patients (n=76,
86.4%) exhibited TAV stenosis. Degree of aortic stenosis was assessed according to mean pressure
gradient (MPG), peak pressure gradient (PPG), aortic valve area (AVA) indexed aortic valve area (AVAi)
and maximum speed through aortic valve (Vmax). These were compared with calcium score (AVCS)
calculated from CT scan. All of these patients were observed in the operating room during surgery and
valves analyzed after explantation. All of the patients underwent aortic valve replacement.
Results: Average AVCS values (median + IQ range) were 3306.3 (1995.4 – 4820.6) [female: 2215 (1463.35
– 3372.85); male: 4093.5 (3133.3 – 5274.4). Average AVCS values for BAV patients were 3063.5 (3323.125 –
4868.9) and 3106.55 (1965.375) – 4780.125) for TAV patients. There were significant correlations between
AVCS and AVAi (Spearman’s ρ=−0.24, P=0.025), PPG (ρ= 0.38, P< 0.001), MPG (ρ= 0.36, P= 0.001) V max (ρ=
0.37, P < 0.001) and gender (ρ= 0.485, P < 0.001) while AVA values showed no significant correlation with
AVCS (ρ= -0.066, P = 0.540). Overall survival was similar not depending of severity of calcifications and
stenosis, however clamp time and surgery time were longer for patients with severely calcified valves
which means calcium scoring as a parameter should also be taken in consideration during preoperative
planning.
Conclusion: Careful preoperative planning is essential for good outcome of surgery, here we have
proven the connection between echocardiography parameters of aortic stenosis and calcium score
calculated by CT scan.

Keywords

aortic valve surgery; aortic valve stenosis; calcium score.

Hrčak ID:

226697

URI

https://hrcak.srce.hr/226697

Publication date:

15.10.2019.

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