scholarly journals Use of Ballistocardiography to Monitor Cardiovascular Hemodynamics in Preeclampsia

2021 ◽  
Vol 2 (1) ◽  
pp. 97-105
Author(s):  
Odayme Quesada ◽  
Md Mobashir Hasan Shandhi ◽  
Shire Beach ◽  
Sean Dowling ◽  
Damini Tandon ◽  
...  
2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Gaoyang Li ◽  
Haoran Wang ◽  
Mingzi Zhang ◽  
Simon Tupin ◽  
Aike Qiao ◽  
...  

AbstractThe clinical treatment planning of coronary heart disease requires hemodynamic parameters to provide proper guidance. Computational fluid dynamics (CFD) is gradually used in the simulation of cardiovascular hemodynamics. However, for the patient-specific model, the complex operation and high computational cost of CFD hinder its clinical application. To deal with these problems, we develop cardiovascular hemodynamic point datasets and a dual sampling channel deep learning network, which can analyze and reproduce the relationship between the cardiovascular geometry and internal hemodynamics. The statistical analysis shows that the hemodynamic prediction results of deep learning are in agreement with the conventional CFD method, but the calculation time is reduced 600-fold. In terms of over 2 million nodes, prediction accuracy of around 90%, computational efficiency to predict cardiovascular hemodynamics within 1 second, and universality for evaluating complex arterial system, our deep learning method can meet the needs of most situations.


Nutrients ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 108
Author(s):  
Athanasios Angelis ◽  
Christina Chrysohoou ◽  
Evangelia Tzorovili ◽  
Aggeliki Laina ◽  
Panagiotis Xydis ◽  
...  

Background: Mediterranean diet was evaluated on erectile performance and cardiovascular hemodynamics, in chronic heart failure patients. Methods: 150 male stable heart failure patients were enrolled in the study (62 ± 10 years, New York Heart Association (NYHA) classes I–II, ejection fraction ≤40%). A detailed echocardiographic evaluation including estimation of the global longitudinal strain of the left ventricle and the systolic tissue doppler velocity of the tricuspid annulus was performed. Erectile dysfunction severity was assessed by the Sexual Health Inventory for Men-5 (SHIM-5) score. Adherence to the Mediterranean diet was evaluated by the MedDietScore. Results: The SHIM-5 score was positively correlated with the MedDietScore (p = 0.006) and augmentation index (p = 0.031) and inversely correlated with age (p = 0.002). MedDietScore was negatively associated with intima-media-thickness (p < 0.001) and serum prolactin levels (p = 0.05). Multi-adjusted analysis revealed that the inverse relation of SHIM-5 and prolactin levels remained significant only among patients with low adherence to the Mediterranean diet (p = 0.012). Conclusion: Consumption of Mediterranean diet benefits cardiovascular hemodynamics, while suppressing serum prolactin levels. Such physiology may enhance erectile ability independently of the of the left ventricle ejection fraction.


2000 ◽  
Vol 32 (6) ◽  
pp. 1073-1079 ◽  
Author(s):  
STEVE D. McCOLE ◽  
MICHAEL D. BROWN ◽  
GEOFFREY E. MOORE ◽  
JOSEPH M. ZMUDA ◽  
JEFFREY D. CWYNAR ◽  
...  

1989 ◽  
Vol 51 (5) ◽  
pp. 796-802 ◽  
Author(s):  
Giovanni B. La Sala ◽  
Oscar Gaddi ◽  
Gabriele Bruno ◽  
Loris Brandi ◽  
Milva Cantarelli ◽  
...  

1971 ◽  
Vol 220 (6) ◽  
pp. 1798-1807 ◽  
Author(s):  
GH Johnson ◽  
TH Kirschbaum ◽  
Brinkman CR ◽  
NS Assali

2018 ◽  
Vol 42 (2) ◽  
pp. 223-232 ◽  
Author(s):  
Tsung-Ming Tsao ◽  
Ming-Jer Tsai ◽  
Jing-Shiang Hwang ◽  
Ta-Chen Su

2015 ◽  
Vol 29 (10) ◽  
pp. 610-617 ◽  
Author(s):  
P Krzesiński ◽  
A Stańczyk ◽  
G Gielerak ◽  
B Uziębło-Życzkowska ◽  
M Kurpaska ◽  
...  

2016 ◽  
Vol 94 (2) ◽  
pp. 231-236
Author(s):  
Otávio Arruda Heringer ◽  
Karla Oliveira dos Santos Cassaro ◽  
Nara Carolina Mateus Rabello Barbosa ◽  
Girlandia Alexandre Brasil ◽  
Andrews Marques do Nascimento ◽  
...  

The negative relationship between androgens and the Bezold–Jarisch reflex (BJR) has been demonstrated, but no studies evaluated the physiological influence of testosterone on this reflex. We evaluated the influence of male rat castration on the BJR, cardiac morphometric parameters, and the plasmatic and the cardiac angiotensin converting enzyme (ACE) activity. After castration (CAS), the rats were divided into 24 and 72 h (CAS24H, CAS72H), and 7 and 21 days (CAS7D, CAS21D) groups. The BJR was studied by administering increasing doses of phenylbiguanide (PBG; 1.5–24 μg/kg) at different times after castration. Castration results in the following: (i) reduction in testosterone levels (SHAM: 238.7 ± 15.1; CAS24H: 9.0 ± 0.5; CAS72H: 6.7 ± 0.4; CAS7D: 5.2 ± 0.2; and CAS21D: 2.2 ± 0.3 ng/dL; p < 0.05); (ii) no changes in 17β-estradiol; (iii) a reduced BJR sensitivity (PBG 6 μg/kg; SHAM: 77 ± 7; CAS24H: 63 ± 10; CAS72H: 55 ± 6; CAS7D: 54 ± 4; and CAS21D: 35 ± 2%; p < 0.01); (iv) a decrease in cardiac (SHAM: 107 ± 6; CAS24H: 92 ± 2; CAS72H: 82 ± 3; CAS7D: 54 ± 3; and CAS21D: 43 ± 4%; p < 0.05) and plasmatic (SHAM: 135 ± 8; CAS24H: 102 ± 5; CAS72H: 99 ± 3; CAS7D: 89 ± 4; and CAS21D: 56 ± 6%; p < 0.05) ACE activity. No changes were observed in cardiac morphometry and hemodynamic parameters. Therefore, castration leads to decrease in testosterone levels as early as 24 h, reduction in ACE activity and loss of BJR sensitivity 7 days after castration. The loss of BJR sensitivity was not related to cardiac morphometric changes and cardiovascular hemodynamics.


2012 ◽  
Vol 59 (13) ◽  
pp. E1612
Author(s):  
Rajeeve Subbiah ◽  
Aditya Bakhshi ◽  
Brian O&apos;Murchu ◽  
Matthew McClure ◽  
Eric Schwartz ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document