The Magnetocardiogram A New Approach to the Fields Surrounding the Heart

Experiments have been conducted which reveal the existence of a detectable magnetic field associated with cardiac electrical activity. The relationship between the magnetic record and the electrocardiogram has been explored and it is shown that under certain conditions of axis orientation the voltage induced into a toroidal sensing element around the heart has the form of the first time derivative of the electrocardiogram. A formula based on Maxwell\u27s equations has been developed to relate these two phenomona

COMPUTER ANALYSIS OF THE VENTRICULAR GRADIENT OF ISOLATED AND PERFUSED MAMMALIAN HEARTS

Abstract not availabl

A Cardiovascular Engineering Training Program

To meet a need for bioengineering training programs designed for life scientists The University of Nebraska has initiated a Cardiovascular Engineering Training Program

Graded Exercise Testing in a Pediatric Weight Management Center: The DeVos Protocol

Background: In this article, we describe a protocol used to test the functional capacity of the obese pediatric patient and describe the peak oxygen consumption (VO2peak) of patients seeking treatment at a pediatric weight management center. Methods: One hundred eleven (mean age, 12.5 +/- 3.0 years) patients performed a multistage exercise test on a treadmill, of which 90 (81%) met end-test criteria and provided valid VO2peak data. Peak VO2 was expressed: (1) in absolute terms (L min(-1)); (2) as the ratio of the volume of oxygen consumed per minute relative to total body mass (mL kg(-1) min(-1)); and (3) as the ratio of the volume of oxygen consumed per minute relative to fat-free mass (mL center dot FFM center dot kg(-1). min(-1)) Results: Mean BMI z-score was 2.4 +/- 0.3 and the mean percent body fat was 36.5 +/- 9.7%. Absolute VO2peak (L center dot min(-1)) was significantly different between sexes; however, relative values were similar between sexes. Mean VO2peak was 25.7 +/- 4.8 mL center dot kg(-l center dot) min(-1) with a range of 13.5-36.7 mL seeking treatment at a stage 3 pediatric weight management center exhibit low VO2peak. The protocol outlined here should serve as a model for similar programs interested in the submaximal and peak responses to exercise in obese pediatric patients

Novel simulation concepts for buildings and community energy systems based on the functional mock-up interface specification

International audienc

Social/Electronic Media Use of Children and Adolescents Who Attend the Pediatric Weight Management Programs of the COMPASS Network.

Background: Obesity is a major healthcare problem in youth and their social/electronic media (SEM) use has been described as a risk factor. Though much is known about the newer technologies youth use to communicate, little is known about what is used by those in weight management programs. The aim of this study was to determine what types of SEM, including sedentary and active video games, youth in weight management programs use and which they prefer for communicating with healthcare providers. Methods/Design: This was a multisite study using a 24-question online SurveyMonkey? questionnaire. Youth, 12?17 years old, attending pediatric weight management programs at seven participating centers in the Childhood Obesity Multi Program Analysis and Study System network were eligible. Results: There were 292 responders with a mean age of 14.2 years. Fifty-four percent were female, 36% Caucasian, 35% African American, and 33% were Hispanic. Ninety-four percent had access to a computer, 71% had Internet access, and 63% had smartphones. Whereas 87% had at least one gaming system at home, 50% reported they never played sedentary video games (71% of females vs. 25% males; p?Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/140342/1/chi.2015.0034.pd