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Effects of Valsalva Maneuver on Cardiovascular Function
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valsalva-final.doc |
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| Description | Disturbances anywhere in the cardiovascular system that alter mean arterial pressure will elicit reflex changes in cardiovascular (CV) function. The Valsalva maneuver (increased intrathoracic pressure) decreases venous return and thus reduces cardiac output. As a consequence, mean arterial pressure (BP) falls. The resulting baroreceptor reflex increases heart rate (HR). This phenomenon can be easily demonstrated using only a blood pressure cuff, stethoscope, and a stop watch. | |
| Authors |
Joel Michael, Rush Medical College Dee Silverthorn, University of Texas at Austin William Galey, University of New Mexico School of Medicine Robert Carroll, East Carolina State University |
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| Grade/Age Levels |
High School lower division (Grades 9-10) High School upper division (Grades 11-12) Undergraduate lower division (Grades 13-14) Undergraduate upper Division (Grades 15-16) Professional (degree program) Continuing Education Graduate |
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| Type of Review | Reviewed By Archive Board | |
| Keywords | Autonomic regulation, Baroreceptor, Blood pressure, Cardiac output, Heart rate, Venous | |
| Language | English | |
| Disciplines | Cardiology, Physiology | |
| Format | Word Document - DOC | |
| Type of Resource | Laboratory exercise, Laboratory manual, Manual | |
| Difficulty Level | At grade/age level | |
| Learning Time | <=1 hour | |
| Pedagogy | Laboratory experiment | |
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