title: Effect of vibrations with various duration exposure on the P-R interval of ECG.
abstract: ECG analysis of a human body subjected to vertical vibrations of various durations was carried out. Results obtained from a representative subject show that the exposure period has different effects on the P-R time interval of the ECG waves. Vibration increases the Percent Normalized Difference (PND) of the P-R time interval with time till it reaches a steady state value of 29.5. An increase of the exposure duration increases the time constant, while the steady state value remains constant. The PND behavior can be mathematically modeled as a first order system.
authors.affiliation: Faculty of Engineering, Jordan University of Science and Technology, Irbid, Jordan.
authors.forename: M O
authors.initials: MO
authors.lastname: Othman
authors.forename: H
authors.initials: H
authors.lastname: Al-Nashash
authors.forename: W
authors.initials: W
authors.lastname: Qassem
mesh_terms: D001698:Biomedical Engineering; D004562:Electrocardiography / Q000706:statistics & numerical data; D006329:Heart Conduction System / Q000502:physiology; D006801:Humans; D008955:Models, Cardiovascular; D012815:Signal Processing, Computer-Assisted; D013997:Time Factors; D014732:Vibration / Q000009:adverse effects*