Abstract | OBJECTIVE: DESIGN: Randomized controlled animal study. SETTING: University research laboratory. SUBJECTS: Male domestic pigs. INTERVENTIONS: MEASUREMENTS AND MAIN RESULTS: Identical extracorporeal flows (approximately = 9% of baseline cardiac index) were required in zoniporide and control groups to attain the target coronary perfusion pressure, resulting in comparable left anterior descending coronary artery blood flow (9 +/- 1 and 10 +/- 1 mL.min-1) and resistance (0.10 +/- 0.01 and 0.10 +/- 0.01 dyne.sec.cm(-5)). Yet zoniporide prevented reductions in left ventricular volume and wall thickening while favoring higher myocardial creatine phosphate to creatine ratios (0.14 +/- 0.03 vs. 0.06 +/- 0.01, p < .05), lower myocardial adenosine (0.7 +/- 0.1 vs. 1.3 +/- 0.2, p < .05), and lower myocardial lactate (80 +/- 9 vs. 125 +/- 6 mmol.kg-1, p < .001). Postresuscitation, zoniporide-treated pigs had higher left ventricular ejection fraction (0.57 +/- 0.07 vs. 0.29 +/- 0.05, p < .05) and higher cardiac index (4.8 +/- 0.4 vs. 3.4 +/- 0.2 L.min-1.m-2, p < .05). CONCLUSIONS:
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Authors | Iyad M Ayoub, Julieta D Kolarova, Ronald L Kantola, Jeejabai Radhakrishnan, Sufen Wang, Raúl J Gazmuri |
Journal | Critical care medicine
(Crit Care Med)
Vol. 35
Issue 10
Pg. 2329-36
(Oct 2007)
ISSN: 0090-3493 [Print] United States |
PMID | 17944021
(Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, U.S. Gov't, Non-P.H.S.)
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Copyright | (C) 2007 Lippincott Williams & Wilkins, Inc. |
Chemical References |
- Guanidines
- Pyrazoles
- zoniporide
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Topics |
- Animals
- Energy Metabolism
- Guanidines
(pharmacology, therapeutic use)
- Heart
(drug effects, physiopathology)
- Male
- Myocardium
(metabolism)
- Pyrazoles
(pharmacology, therapeutic use)
- Swine
- Ventricular Fibrillation
(drug therapy, metabolism, physiopathology)
- Ventricular Function, Left
(drug effects)
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