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An analytic method to investigate hemodynamics of the cardiovascular system - single ventricular system
Int J Artif Organs. 2023 Nov 10:3913988231208393. doi: 10.1177/03913988231208393. Online ahead of print.ABSTRACTBased on the lumped parameter model (LPM) of the cardiovascular system, an analytic method is developed to derive its hemodynamics theoretically. As soon as the LPM (a series of differential equations) is solved, the hemodynamics would be obtained immediately. However, because of time-varying ventricular elastance and high order, it is difficult to solve analytically. Through simplifying the LPM, the original biventricular system with continuously varying elastance becomes a single ventricular system with discret...
Source: The International Journal of Artificial Organs - November 10, 2023 Category: Transplant Surgery Authors: Yuxin Zhu Wanning Ge Tingting Wu Liudi Zhang Polin Hsu Source Type: research

Extracorporeal blood purification with Oxiris < sup > ® < /sup > filter in critically ill patients with COVID-19 requiring continuous renal replacement therapy
CONCLUSION: The number of patients alive and ventilator-free at 30-days was higher in the Oxiris® group than that in the standard CRRT group; however, the difference did not reach statistical significance after adjusting for the baseline severity of illness. There was a significant reduction in IL-6 and significant improvement in PaO2/FiO2 ration after Oxiris® CRRT initiation.PMID:37926985 | DOI:10.1177/03913988231207716 (Source: The International Journal of Artificial Organs)
Source: The International Journal of Artificial Organs - November 6, 2023 Category: Transplant Surgery Authors: Mohamed Abdelaty Adham Mohamed Mohamed O Saad Hassan Mitwally Mohamad M Alkadi Ahmed Hashim Hassan Al Malki Husain S Ali Ahmed Soliman Mohamed Emad Mustafa Abdulaziz Alalawi Moustafa Elshafei Muftah Othman Mohamad Khatib Abdul-Salam Ibrahim Source Type: research

Optimal treatment of tannic acid for the anti-calcification of bovine jugular veins and the underlying mechanism
CONCLUSION: Ferric ions-tannic acid treatment can give the conduits better flexibility with excellent biomechanical properties and anti-calcification effects, making it a promising bovine jugular veins processing method.PMID:37908088 | DOI:10.1177/03913988231208631 (Source: The International Journal of Artificial Organs)
Source: The International Journal of Artificial Organs - November 1, 2023 Category: Transplant Surgery Authors: Aili Wang De Wang Yumiao Wang Bixuan Liu Haiyang Wei Yibo Wang Jianye Zhou Source Type: research

Effects of biventricular shunt on pump characteristics in a maglev total artificial heart
This study aimed to investigate the effects of shunt flow on pump characteristics and assess the IB-Heart's potential to regulate flow balance between systemic and pulmonary circulation. At a rotational speed of 2000 rpm and flow rate range of 0-10 L/min, shunt flow exhibited a minor impact, with a 1.4 mmHg (1.3%) effect on pump characteristics. Shunt flow variation of about 0.13 L/min correlated with a 10 mmHg pressure difference between the pumps' afterload and preload conditions. This variance was linked to changes in the inlet flow rates of the left and right pumps, signifying the ventricular shunt structure's capacity...
Source: The International Journal of Artificial Organs - November 1, 2023 Category: Transplant Surgery Authors: Shuya Shida Kenichi Tsushima Masahiro Osa Daniel L Timms Toru Masuzawa Source Type: research