Abstract |
Motion of mitral valve during cardiac massage was examined using beagle dogs with ventricular fibrillation (n=4). Active compression- decompression cardiac massage (ACD-CM) exhibited greater peak aortic pressure than standard cardiac massage (S-CM), reverse of which was true for peak pulmonary capillary wedge pressure in each animal. Accordingly, peak aortic pressure was greater than peak pulmonary capillary wedge pressure with ACD-CM, whereas its reverse was true with S-CM. Transesophageal echocardiography revealed that mitral valve was incompletely closed with S-CM with showing regurgitation. The valve was more effectively closed during ACD-CM. These results indicate that effective closure of mitral valve during cardiac massage may increase forward blood flow, supporting "cardiac pump theory" rather than "thoracic pump theory" as a principle in dogs.
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Authors | Ai Goto, Ryuichi Kambayashi, Hiroko Izumi-Nakaseko, Yoshinori Takei, Shinichi Kawai, Akio Matsumoto, Keith G Lurie, Atsushi Sugiyama |
Journal | The Journal of veterinary medical science
(J Vet Med Sci)
Vol. 84
Issue 6
Pg. 877-880
(Jun 18 2022)
ISSN: 1347-7439 [Electronic] Japan |
PMID | 35527014
(Publication Type: Journal Article)
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Topics |
- Animals
- Dog Diseases
(therapy)
- Dogs
- Echocardiography, Transesophageal
- Heart Massage
(veterinary)
- Hemodynamics
- Mitral Valve
- Mitral Valve Insufficiency
(therapy, veterinary)
- Ventricular Fibrillation
(therapy, veterinary)
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