The Journal of surgical research.
Publisher:
Academic Press. New York, NY : Academic Press
Frequency: Monthly, 2018-
Country: United States
Language: English
Author(s):
Association for Academic Surgery (U.S.), Association of Veterans Administration Surgeons (U.S.)
Start Year:1961 -
ISSN:
0022-4804 (Print)
1095-8673 (Electronic)
0022-4804 (Linking)
1095-8673 (Electronic)
0022-4804 (Linking)
Impact Factor
2.2
2022
| NLM ID: | 0376340 |
| (DNLM): | J39920000(s) |
| (OCoLC): | 01783129 |
| Coden: | JSGRA2 |
| Classification: | W1 JO905Q |
Regional myocardial blood flow and coronary vascular reserve in unanesthetized ponies during pacing-induced ventricular tachycardia. To examine the effects of tachycardia on coronary circulation, transmural distribution of myocardial blood flow (MBF, 15-micron diameter radionuclide-labeled microspheres) was studied in six healthy adult ponies at rest (heart rate = 60 +/- 7 beats . min-1), during ventricular pacing at 150 and 200 beats . min-1, as well as with ventricular pacing at 250 beats . min-1 before and during maximal coronary vasodilatation (iv adenosine infusion; 4 mumole . kg-1 . min-1). Mean aortic pressure and cardiac output were unchanged from control values with ventricular pacing. Whereas ventricular pacing at...