The pre-ejection period (PEP) of the cardiac cycle was measured in the human fetus using pulse Doppler in association with transabdominal ECG. The technique permitted the exact localization of the aortic valve, a good recording of its opening and the exact measurement of PEP. Between 32 and 42 weeks of pregnancy there is a strong correlation between PEP and gestational age. This new method seems to be an easy and reliable tool for measuring the PEP during intrauterine life.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
A novel wearable device integrating ECG and PCG for cardiac health monitoring.
Microsyst Nanoeng
January 2025
Key Laboratory of Instrumentation Science and Dynamic Measurement Ministry of Education, North University of China, 030051, Taiyuan, China.
The alarming prevalence and mortality rates associated with cardiovascular diseases have emphasized the urgency for innovative detection solutions. Traditional methods, often costly, bulky, and prone to subjectivity, fall short of meeting the need for daily monitoring. Digital and portable wearable monitoring devices have emerged as a promising research frontier.
View Article and Find Full Text PDFImpact of leadless pacemaker implantation site on cardiac synchronization and tricuspid regurgitation.
Egypt Heart J
January 2025
Department of Cardiology, Hangzhou First People's Hospital, #261 Huansha Road, Hangzhou, 310000, Zhejiang Province, China.
Background: To investigate the optimization of leadless pacemaker placement and to assess its impact on heart synchronization and tricuspid regurgitation.
Results: A clinical trial was conducted involving 53 patients who underwent leadless pacemaker implantation at the Second Affiliated Hospital of Zhejiang University School of Medicine and Hangzhou First People's Hospital between March 2022 and February 2023. Implantation site localization was determined using the 18-segment method under RAO 30° imaging.
Continuous Estimation of Blood Pressure by Utilizing Seismocardiogram Signal Features in Relation to Electrocardiogram.
Biosensors (Basel)
December 2024
Optoelectronics and Measurement Techniques Research Unit, University of Oulu, 90570 Oulu, Finland.
There is an ongoing search for a reliable and continuous method of noninvasive blood pressure (BP) tracking. In this study, we investigate the feasibility of utilizing seismocardiogram (SCG) signals, i.e.
View Article and Find Full Text PDFWhen social comparison works as a demotivator: Stronger peers mitigate effort levels.
Int J Psychophysiol
February 2025
Department of Psychology and Educational Sciences, University of Geneva, Switzerland.
The present study tested the effect of social comparison on effort-related cardiovascular responses. Specifically, we investigated how effort levels are influenced when individuals compare themselves to significantly better peers versus similar or slightly better peers. 43 participants played five-minute video games while displaying the scores of peers who were similar, slightly better, or significantly better, in addition to a control condition without peer scores.
View Article and Find Full Text PDFEffect of respiration and exercise on seismocardiographic signals.
Comput Biol Med
February 2025
Department of Mechanical and Aerospace Engineering, University of Central Florida, and the Biomedical Acoustics Research Company, 32816, Orlando, FL, USA.
Background: Seismocardiographic signals (SCG) are chest wall vibrations induced by mechanical cardiac activities. This study investigated the morphological changes in the SCG signal due to respiration and exercise.
Methods: Fifteen healthy subjects were recruited, and SCG was acquired before and after exercise.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!