Cardiac Structure and Function in Humans: A New Cardiovascular Physiology Laboratory

Autor/inn/en	Song, Su; Burleson, Paul D.; Passo, Stanley; Messina, Edward J.; Levine, Norman; Thompson, Carl I.; Belloni, Francis L.; Recchia, Fabio A.; Ojaimi, Caroline; Kaley, Gabor; Hintze, Thomas H.
Titel	Cardiac Structure and Function in Humans: A New Cardiovascular Physiology Laboratory
Quelle	In: Advances in Physiology Education, 33 (2009) 3, S.221-229 (9 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1043-4046
DOI	10.1152/advan.00032.2009
Schlagwörter	Medical Students; Student Volunteers; Laboratories; Physiology; Human Body; Metabolism; Group Discussion; Reinforcement; Medical Schools; Medical Education + Suchen Sie Ihr Suchwort? Laboratory; Laboratorium; Physiologie; Menschlicher Körper; Stoffwechsel; Gruppendiskussion; Positive Verstärkung; Medizinische Ausbildung
Abstract	As the traditional cardiovascular control laboratory has disappeared from the first-year medical school curriculum, we have recognized the need to develop another "hands-on" experience as a vehicle for wide-ranging discussions of cardiovascular control mechanisms. Using an echocardiograph, an automatic blood pressure cuff, and a reclining bicycle, we developed protocols to illustrate the changes in cardiac and vascular function that occur with changes in posture, venous return, and graded exercise. We use medical student volunteers and a professional echocardiographer to generate and acquire data, respectively. In small-group sessions, we developed an interactive approach to discuss the data and to make a large number of calculations from a limited number of measurements. The sequence of cardiac events and cardiac structure in vivo were illustrated with the volunteers lying down, standing, and then with their legs raised passively above the heart to increase venous return. Volunteers were then asked to peddle the bicycle to achieve steady-state heart rates of 110 and 150 beats/min. Data were collected in all these states, and calculations were performed and used as the basis of a small-group discussion to illustrate physiological principles. Information related to a surprisingly large number of cardiovascular control mechanisms was derived, and its relevance to cardiovascular dysfunction was explored. This communication describes our experience in developing a new cardiovascular control laboratory to reinforce didactic material presented in lectures and small-group sessions. (Contains 2 tables and 8 figures.) (As Provided).
Anmerkungen	American Physiological Society. 9650 Rockville Pike, Bethesda, MD 20814-3991. Tel: 301-634-7164; Fax: 301-634-7241; e-mail: webmaster@the-aps.org; Web site: http://advan.physiology.org/
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10