On-X versus St Jude Medical Regent mechanical aortic valve prostheses: early haemodynamics

Xu, Runzhang; Rahnavardi, Mohammad; Pitman, Bradley M.; Shirazi, Mitra; Stuklis, Robert; Edwards, James; Worthington, Michael

doi:10.1136/openhrt-2016-000539

Cited by 8 publications

(6 citation statements)

References 17 publications

(11 reference statements)

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“…The values obtained in this in vitro study fall within the range of those obtained in vivo. Xu and colleagues 32 showed in a population study, that regardless of the size of the valve and the diversity of the patients, On-X valves yielded equal or higher EOAs. From a design perspective, the On-X valve is characterized by a larger internal diameter (21.4 mm) compared with the same tissue annulus diameter and valve size SJM (18.6 mm) (Figure 1, A).…”

Section: Effect Of Valve Design On Hemodynamic Parametersmentioning

confidence: 99%

A turbulence in vitro assessment of On-X and St Jude Medical prostheses

Hatoum

Maureira²,

Dasi³

2020

The Journal of Thoracic and Cardiovascular Surgery

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Section: Effect Of Valve Design On Hemodynamic Parametersmentioning

confidence: 99%

A turbulence in vitro assessment of On-X and St Jude Medical prostheses

Hatoum

Maureira²,

Dasi³

2020

The Journal of Thoracic and Cardiovascular Surgery

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“…The bileaflets which have achieved long-term clinical application, especially the St. Jude and Carbomedics bileaflets, constitute more than 70 percent of clinical valve types and are recognized as the most excellent artificial mechanical heart valves (7)(8)(9). Most previous studies are case report, or only reported short-term clinical effects.…”

Section: Introductionmentioning

confidence: 99%

Clinical mid-term outcomes of the Chinese-made CL-V bileaflet mechanical heart valve in Chinese patients

Liang¹,

Liu²,

Qiang³

et al. 2021

J Thorac Dis

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Background: The CL-V full-carbon bileaflet mechanical heart valve is a novel Chinese-made prosthetic valve. This study evaluated the mid-term outcomes of the CL-V bileaflet mechanical heart valve after implantation in Chinese patients. Methods: This study retrospectively enrolled a total of 38 consecutive patients who underwent elective mechanical heart valve replacement (MHVR) with two different valve types from April 2004 and May 2010, including 18 patients with the CL-V bileaflet mechanical heart valve (44.4% male, mean age 47.4±6.2 years, mean body weight 64.7±11.9 kg) and 20 patients with the St. Jude mechanical heart valve (45.0% male, mean age 49.7±7.6 years, mean body weight 66.1±11.1 kg). All patients underwent follow-up clinical evaluations in the outpatient department at all-time points. Results: No complications occurred during the mean 61.3 months follow-up time (range, 47-102 months). The cardiothoracic ratios (52.7%±4.5% vs. 50.1%±4.0%), left atrium diameter (46.5±7.6 vs. 44.8±9.3 mm), left ventricular diastolic diameter (47.6±4.9 vs. 48.2±8.5 mm) and left ventricular ejection fraction (65.4%±8.7% vs. 64.5%±8.0%) were not significantly different between the two groups (P>0.05).Transthoracic Doppler echocardiography showed that the hemodynamic indexes were not significantly different between the two groups at 1 year and 3 years (P>0.05). Furthermore, no significant differences were found between the two groups in hemocompatibility indexes at both 6 months and 3 years postoperatively (P>0.05). Conclusions:The mid-term follow-up results of the CL-V bileaflet mechanical heart valve were similar to those of the St. Jude Medical heart valve, which showed stable hemodynamics and good blood compatibility. Chinese-made CL-V bileaflet mechanical heart valves can be a substitute for St. Jude Medical heart valves, and can be widely used in cardiac surgery. Trial registration: Chinese Clinical Trial Registry ChiCTR2000034158.

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“…Each group had 33 patients, and they found no difference in postoperative peak gradient across the prosthesis in both groups. However, for the valve size 25 mm, On-X valves had a lower peak gradient but no difference in the effective orifice area [ 5 ] . We found a similar finding where there was a nonsignificant trend towards lower mean pressure gradient in the 25 mm On-X valve size compared to 24 mm ATS and Bicarbon valve sizes ( P =0.09), as depicted in Figure 2 .…”

Section: Discussionmentioning

confidence: 99%

“…The ideal prosthetic valve is yet to be developed, and several studies showed comparable outcomes among the new generation of mechanical valves [ 5 , 6 ] . Recently, we started to increasingly use the On-X aortic prosthesis due to the advantage of lower anticoagulation targets.…”

Section: Introductionmentioning

confidence: 99%

Early Hemodynamic Profile after Aortic Valve Replacement — A Comparison between Three Mechanical Valves

Algarni¹,

Hassan²,

Arafat³

et al. 2021

Braz J Cardiovasc Surg

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Introduction There are scarce data comparing different mechanical valves in the aortic position. The objective of this study was to compare the early hemodynamic changes after aortic valve replacement between ATS, Bicarbon, and On-X mechanical valves. Methods We included 99 patients who underwent aortic valve replacement with mechanical valves between 2017 and 2019. Three types of mechanical valves were used, On-X valve (n=45), ATS AP360 (n=32), and Bicarbon (n=22). The mean prosthetic valve gradient was measured postoperatively and after six months. Results Preoperative data were comparable between groups, and there were no differences in preoperative echocardiographic data. Pre-discharge echocardiography showed no difference between groups in the ejection fraction ( P =0.748), end-systolic ( P =0.764) and end-diastolic ( P =0.723) diameters, left ventricular mass index ( P =0.348), aortic prosthetic mean pressure gradient ( P =0.454), and indexed aortic prosthetic orifice area ( P =0.576). There was no difference in the postoperative aortic prosthetic mean pressure gradient between groups when stratified by valve size. The changes in the aortic prosthetic mean pressure gradient of the intraoperative period, at pre-discharge, and at six months were comparable between the three prostheses ( P =0.08). Multivariable regression analysis revealed that female gender (beta coefficient -0.242, P =0.027), body surface area (beta coefficient 0.334, P <0.001), and aortic prosthetic size (beta coefficient -0.547, P <0.001), but not the prosthesis type, were independent predictors of postoperative aortic prosthetic mean pressure gradient. Conclusion The three bileaflet mechanical aortic prostheses (On-X, Bicarbon, and ATS) provide satisfactory early hemodynamics, which are comparable between the three valve types and among different valve sizes.

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On-X versus St Jude Medical Regent mechanical aortic valve prostheses: early haemodynamics

Cited by 8 publications

References 17 publications

A turbulence in vitro assessment of On-X and St Jude Medical prostheses

A turbulence in vitro assessment of On-X and St Jude Medical prostheses

Clinical mid-term outcomes of the Chinese-made CL-V bileaflet mechanical heart valve in Chinese patients

Early Hemodynamic Profile after Aortic Valve Replacement — A Comparison between Three Mechanical Valves

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