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Wang G, Zhang Q, Yuan W, Wu J, Li C. Enalapril protects against myocardial ischemia/reperfusion injury in a swine model of cardiac arrest and resuscitation. Int J Mol Med 2016; 38:1463-1473. [PMID: 27633002 PMCID: PMC5065301 DOI: 10.3892/ijmm.2016.2737] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 09/06/2016] [Indexed: 12/16/2022] Open
Abstract
There is strong evidence to suggest that angiotensin-converting enzyme inhibitors (ACEIs) protect against local myocardial ischemia/reperfusion (I/R) injury. This study was designed to explore whether ACEIs exert cardioprotective effects in a swine model of cardiac arrest (CA) and resuscitation. Male pigs were randomly assigned to three groups: sham-operated group, saline treatment group and enalapril treatment group. Thirty minutes after drug infusion, the animals in the saline and enalapril groups were subjected to ventricular fibrillation (8 min) followed by cardiopulmonary resuscitation (up to 30 min). Cardiac function was monitored, and myocardial tissue and blood were collected for analysis. Enalapril pre-treatment did not improve cardiac function or the 6-h survival rate after CA and resuscitation; however, this intervention ameliorated myocardial ultrastructural damage, reduced the level of plasma cardiac troponin I and decreased myocardial apoptosis. Plasma angiotensin (Ang) II and Ang-(1–7) levels were enhanced in the model of CA and resuscitation. Enalapril reduced the plasma Ang II level at 4 and 6 h after the return of spontaneous circulation whereas enalapril did not affect the plasma Ang-(1–7) level. Enalapril pre-treatment decreased the myocardial mRNA and protein expression of angiotensin-converting enzyme (ACE). Enalapril treatment also reduced the myocardial ACE/ACE2 ratio, both at the mRNA and the protein level. Enalapril pre-treatment did not affect the upregulation of ACE2, Ang II type 1 receptor (AT1R) and MAS after CA and resuscitation. Taken together, these findings suggest that enalapril protects against ischemic injury through the attenuation of the ACE/Ang II/AT1R axis after CA and resuscitation in pigs. These results suggest the potential therapeutic value of ACEIs in patients with CA.
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Affiliation(s)
- Guoxing Wang
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Qian Zhang
- Department of Emergency Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation (NO.BZ0370), Beijing 100020, P.R. China
| | - Wei Yuan
- Department of Emergency Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation (NO.BZ0370), Beijing 100020, P.R. China
| | - Junyuan Wu
- Department of Emergency Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation (NO.BZ0370), Beijing 100020, P.R. China
| | - Chunsheng Li
- Department of Emergency Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation (NO.BZ0370), Beijing 100020, P.R. China
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Buckley G, Rozanski E, Rush J. Randomized, Blinded Comparison of Epinephrine and Vasopressin for Treatment of Naturally Occurring Cardiopulmonary Arrest in Dogs. J Vet Intern Med 2011; 25:1334-40. [DOI: 10.1111/j.1939-1676.2011.00802.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 07/20/2011] [Accepted: 08/15/2011] [Indexed: 11/27/2022] Open
Affiliation(s)
- G.J. Buckley
- Department of Clinical Sciences; Cummings School of Veterinary Medicine at Tufts University; North Grafton; MA
| | - E.A. Rozanski
- Department of Clinical Sciences; Cummings School of Veterinary Medicine at Tufts University; North Grafton; MA
| | - J.E. Rush
- Department of Clinical Sciences; Cummings School of Veterinary Medicine at Tufts University; North Grafton; MA
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Worster A, Upadhye S, Fernandes CMB. Vasopressin versus epinephrine for out-of-hospital cardiopulmonary resuscitation. CAN J EMERG MED 2010; 7:48-50. [PMID: 17355654 DOI: 10.1017/s1481803500012938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Clinical question
Does the use of vasopressin for adult patients suffering a non-traumatic, out-of-hospital cardiac arrest improve the rates of survival to hospital admission (and discharge) better than epinephrine?
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Affiliation(s)
- Andrew Worster
- Division of Emergency Medicine, McMaster University, Hamilton, Ontario, Canada.
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Wyckoff MH, Berg RA. Optimizing chest compressions during delivery-room resuscitation. Semin Fetal Neonatal Med 2008; 13:410-5. [PMID: 18514603 DOI: 10.1016/j.siny.2008.04.012] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
There is a paucity of data to support the recommendations for cardiac compressions for the newly born. Techniques, compression to ventilation ratios, hand placement, and depth of compression guidelines are generally based on expert consensus, physiologic plausibility, and data from pediatric and adult models.
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Affiliation(s)
- Myra H Wyckoff
- The University of Texas Southwestern Medical Center at Dallas, Department of Pediatrics, Division of Neonatal-Perinatal Medicine, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9063, USA.
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Holger JS, Engebretsen KM, Obetz CL, Kleven TL, Harris CR. A Comparison of Vasopressin and Glucagon in Beta-Blocker Induced Toxicity. Clin Toxicol (Phila) 2008; 44:45-51. [PMID: 16496493 DOI: 10.1080/15563650500394795] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE We compared the efficacy of vasopressin and glucagon in a porcine model of beta-blocker toxicity. Our primary outcome was survival over 4 hours. METHODS Sixteen pigs received a 1-mg/ kg bolus of propranolol IV followed by continuous infusion at 0.25 mg/kg/minute. Toxicity was defined as a 25% decrease in the product of heart rate (HR) and mean arterial pressure (MAP), at which point 20 mL/kg normal saline was rapidly infused. Each pig was randomly assigned to receive either vasopressin or glucagon after the saline bolus. The vasopressin group received a continuous infusion at 0.0028 U/kg/minute, titrated up to a maximum of 0.014 U/ kg/minute. The glucagon group received a 0.05-mg/kg bolus followed by continuous infusion at 0.15 mg/kg/hour. The HR, MAP, systolic BP (SBP), cardiac output (CO), glucose, and pH were monitored for 4 hours from toxicity or until death. RESULTS One pig survived at 4 hours (vasopressin group). Analysis of the 4-hour Kaplan-Meier survival curves found no differences between the groups (log-rank test 0.059, p = 0.81). No overall differences were identified in MAP, systolic BP, cardiac output, glucose, pH, or HR. However, over the first hour MAP and SBP were significantly higher in the vasopressin group (p = 0.004, p = 0.006, respectively). CONCLUSION In this beta-blocker toxicity model, there were no differences in the survival curves between vasopressin- and glucagon-treated pigs during a 4-hour analysis period. No overall differences were noted in MAP, systolic BP, CO, HR, pH, or glucose levels, although vasopressin treatment yielded higher MAP and systolic BP early in resuscitation.
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Affiliation(s)
- Joel S Holger
- Department of Emergency Medicine, Regions Hospital, St. Paul, Minnesota 55101, USA.
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Diéguez G, Martínez MA, Fernández N, Climént B, García-Villalón AL, Monge L. Vasopressin effects on the coronary circulation after a short ischemia in anesthetized goats. Eur J Pharmacol 2004; 495:171-7. [PMID: 15249167 DOI: 10.1016/j.ejphar.2004.05.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2004] [Revised: 05/11/2004] [Accepted: 05/20/2004] [Indexed: 10/26/2022]
Abstract
To examine the coronary effects of arginine-vasopressin during reperfusion after a short ischemia, left circumflex coronary artery flow was electromagnetically measured, and 15 min total occlusion of this artery followed by reperfusion was induced in anesthetized goats (five nontreated, five treated with the inhibitor of nitric oxide synthesis Nomega-nitro-L-arginine methyl ester (L-NAME) and five treated with the inhibitor of cyclooxygenase meclofenamate). The vasoactive drugs and L-NAME were intracoronarily injected, and meclofenamate by i.v. route. At 60 min of reperfusion, coronary vascular conductance was not changed significantly in nontreated and was decreased by 35% (P<0.01) in L-NAME-treated and by 30% (P<0.01) in meclofenamate-treated animals. During reperfusion, the coronary vasodilatation with acetylcholine (3-100 ng) and sodium nitroprusside (1-10 microg) was not altered in nontreated animals, and the vasodilatation with acetylcholine but not with sodium nitroprusside was partially decreased in L-NAME--but not in meclofenamate-treated animals. The vasoconstriction in response to arginine-vasopressin (0.03-0.3 microg) was increased during reperfusion in nontreated, was not changed in L-NAME-treated and was decreased in meclofenamate-treated animals. Therefore, it is suggested that during reperfusion after a short ischemia: (1) the coronary vasodilator reserve is preserved; (2) the coronary vasodilatation with acetylcholine is also preserved, but in this vasodilatation, the role of nitric oxide may be attenuated and prostanoids may be not involved; and (3) the coronary vasoconstriction with arginine-vasopressin is increased, probably due to both attenuation of the modulatory role of nitric oxide and the release of vasoconstrictor prostanoids.
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Affiliation(s)
- Godofredo Diéguez
- Departamento de Fisiología, Facultad de Medicina, Universidad Autónoma, Arzobispo Morcillo 2, 28029 Madrid, Spain.
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Gazmuri RJ, Ayoub IM, Kolarova JD, Karmazyn M. Myocardial protection during ventricular fibrillation by inhibition of the sodium-hydrogen exchanger isoform-1. Crit Care Med 2002; 30:S166-71. [PMID: 11940795 DOI: 10.1097/00003246-200204001-00010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Activation of the sarcolemmal sodium-hydrogen exchanger isoform-1 (NHE-1) in response to the intense intracellular acidosis that develops during ischemia has been identified as an important mechanism of myocardial cell injury. NHE-1 inhibition in the quiescent (nonfibrillating) heart ameliorates functional manifestation of ischemia and reperfusion injury. We investigated in isolated heart and intact rat models of ventricular fibrillation whether NHE-1 inhibition, by using the selective inhibitor cariporide, could ameliorate myocardial abnormalities that develop during ventricular fibrillation and limit resuscitability and survival. In the isolated rat heart, cariporide significantly reduced the magnitude of ischemic contracture during ventricular fibrillation and the accompanying increases in coronary vascular resistance. Hearts that had received cariporide during ventricular fibrillation had no diastolic dysfunction after resuscitation and recovered their systolic function earlier. In intact rats, cariporide given immediately before starting chest compression allowed generation of a coronary perfusion pressure and end-tidal Pco2 comparable with control rats but with significantly less depth of compression. Cariporide had an unprecedented effect in this rat model, prompting spontaneous defibrillation after approximately 8 mins of chest compression. After resuscitation, rats treated with cariporide had significantly less ventricular ectopic activity, better hemodynamic function, and higher survival rates (22 of 24 [94%] vs. 15 of 24 [63%] in control rats, p <.05). We conclude that NHE-1 inhibition may represent a novel and highly effective form of treatment for resuscitation from ventricular fibrillation.
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Affiliation(s)
- Raúl J Gazmuri
- Section of Critical Care Medicine, North Chicago VA Medical Center, North Chicago, IL 60064, USA.
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Stiell IG, Hébert PC, Wells GA, Vandemheen KL, Tang AS, Higginson LA, Dreyer JF, Clement C, Battram E, Watpool I, Mason S, Klassen T, Weitzman BN. Vasopressin versus epinephrine for inhospital cardiac arrest: a randomised controlled trial. Lancet 2001; 358:105-9. [PMID: 11463411 DOI: 10.1016/s0140-6736(01)05328-4] [Citation(s) in RCA: 255] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Survival rates for cardiac arrest patients, both in and out of hospital, are poor. Results of a previous study suggest better outcomes for patients treated with vasopressin than for those given epinephrine, in the out-of-hospital setting. Our aim was to compare the effectiveness and safety of these drugs for the treatment of in-patient cardiac arrest. METHODS We did a triple-blind randomised trial in the emergency departments, critical care units, and wards of three Canadian teaching hospitals. We assigned adults who had cardiac arrest and required drug therapy to receive one dose of vasopressin 40 U or epinephrine 1 mg intravenously, as the initial vasopressor. Patients who failed to respond to the study intervention were given epinephrine as a rescue medication. The primary outcomes were survival to hospital discharge, survival to 1 h, and neurological function. Preplanned subgroup assessments included patients with myocardial ischaemia or infarction, initial cardiac rhythm, and age. FINDINGS We assigned 104 patients to vasopressin and 96 to epinephrine. For patients receiving vasopressin or epinephrine survival did not differ for hospital discharge (12 [12%] vs 13 [14%], respectively; p50.67; 95% CI for absolute increase in survival 211.8% to 7.8%) or for 1 h survival (40 [39%] vs 34 [35%]; p50.66; 210.9% to 17.0%); survivors had closely similar median mini-mental state examination scores (36 [range 19-38] vs 35 [20-40]; p50.75) and median cerebral performance category scores (1 vs 1). INTERPRETATION We failed to detect any survival advantage for vasopressin over epinephrine. We cannot recommend the routine use of vasopressin for inhospital cardiac arrest patients, and disagree with American Heart Association guidelines, which recommend vasopressin as alternative therapy for cardiac arrest.
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Affiliation(s)
- I G Stiell
- Division of Emergency Medicine, University of Ottawa, Ottawa, Canada.
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Garlichs CD, Zhang H, Schmeisser A, Daniel WG. Priming of superoxide anion in polymorphonuclear neutrophils by brain natriuretic peptide. Life Sci 1999; 65:1027-33. [PMID: 10499870 DOI: 10.1016/s0024-3205(99)00333-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In acute coronary syndromes such as unstable angina and myocardial infarction, serum concentration of brain natriuretic peptide, a cardiac hormone with potent vasodilatatory, natriuretic and diuretic activities, is elevated. Little is known about the effect of elevated BNP plasma concentration on free radical-mediated tissue damage in these states. We investigated the influence of human BNP 32 and its fragment BNP 7-32 on the production of superoxide anion by PMN, a major cause for myocardial damage. Although BNP showed itself no stimulatory potential on superoxide anion release in PMN, it enhanced significantly the stimulatory potential of cell stimuli such as fMLP or phorbol 12-myristate 13-acetate (PMA) in PMN. Thus our data show that the cardiac-derived hormone BNP influences an important function of PMN. This 'priming' effect of BNP on PMN may contribute to the tissue damage occuring during acute coronary syndromes.
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Affiliation(s)
- C D Garlichs
- Medical Clinic II, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany.
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Strohmenger, Lindner, Wienen, Radermacher. Effects of an angiotensin II antagonist on organ perfusion during the post-resuscitation phase in pigs. Crit Care 1998; 2:49-55. [PMID: 11056709 PMCID: PMC29001 DOI: 10.1186/cc125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/1997] [Revised: 02/24/1998] [Accepted: 03/01/1998] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND: The aim of this study was to compare pre-arrest and post-resuscitation organ perfusion values and to investigate whether, during the post-resuscitation phase, administration of the angiotensin II antagonist telmisartan (TELM) 10 min after restoration of spontaneous circulation (ROSC) could improve organ flow in comparison to placebo. RESULTS: Five minutes after ROSC in the TELM group, blood flow in the cortex and myocardium increased to 583% (P < 0.05) and 137% (not significant), respectively, whereas blood flow of the colon, stomach and pancreas decreased to 50% (P < 0.05), 28% (P < 0.05) and 19% (P < 0.05) of pre-arrest values, respectively. At 90 min after ROSC, pre-arrest perfusion values both in non-splanchnic and splanchnic organs were achieved. At no point in time were there significant differences between the two groups with respect to organ blood flow or speed of recovery of organ perfusion. CONCLUSIONS: During the post-resuscitation phase, organ blood flow is characterized by the coincidence of increased cerebral and myocardial blood flow and decreased intestinal blood flow. Administration of TELM 10 min after ROSC did not improve the recovery of organ perfusion.
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Affiliation(s)
- Strohmenger
- Department of Anesthesiology and Critical Care Medicine, University of Ulm, Ulm, Germany
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Morris DC, Dereczyk BE, Grzybowski M, Martin GB, Rivers EP, Wortsman J, Amico JA. Vasopressin can increase coronary perfusion pressure during human cardiopulmonary resuscitation. Acad Emerg Med 1997; 4:878-83. [PMID: 9305429 DOI: 10.1111/j.1553-2712.1997.tb03813.x] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVES To determine the hemodynamic effect of vasopressin on coronary perfusion pressure (CPP) in prolonged human cardiac arrest. METHODS A prospective, open-label clinical trial of vasopressin during cardiac resuscitation was performed. Ten patients presenting in cardiac arrest initially received resuscitative measures by emergency physicians according to Advanced Cardiac Life Support (ACLS) guidelines. A central venous catheter for fluid and drug administration and a femoral artery catheter for measurement of CPP (aortic minus right atrial relaxation phase pressures) were placed. When each patient was deemed nonsalvageable, 1.0 mg epinephrine was given and CPP was measured for 5 minutes, followed by a dose of vasopressin (1.0 U/kg). CPP measurements were continued for another 5 minutes. RESULTS The mean duration of cardiac arrest (out-of-hospital interval plus duration of ED ACLS) was 39.6 +/- 16.5 min. There was no improvement in CPP after 1.0 mg of epinephrine. Vasopressin administration resulted in a significant increase of CPP in 4 of the 10 patients. Patients responding to vasopressin had a mean increase in CPP of 28.2 +/- 16.4 mm Hg (range: 10-51.5), with these peak increases occurring at 15 seconds to 4 minutes after administration. The increases in the vasopressin levels after administration did not differ between the responders and nonresponders. CONCLUSIONS In this human model of prolonged cardiac arrest, 40% of the patients receiving vasopressin had a significant increase in CPP. This pilot study suggests that investigation of earlier use of vasopressin as a therapeutic alternative in the treatment of cardiac arrest is warranted.
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Affiliation(s)
- D C Morris
- Henry Ford Health Systems, Detroit, MI, Department of Emergency Medicine 48202-3540, USA
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Strohmenger HU, Lindner KH, Wienen W, Vogt J. Effects of the AT1-selective angiotensin II antagonist, telmisartan, on hemodynamics and ventricular function after cardiopulmonary resuscitation in pigs. Resuscitation 1997; 35:61-8. [PMID: 9259062 DOI: 10.1016/s0300-9572(97)00023-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The purpose of this study was to investigate the effects of the angiotensin II (ANG II) antagonist, telmisartan, on hemodynamics, myocardial function and myocardial blood flow during the postresuscitation phase in a porcine model of CPR and to compare these to saline. After 4 min of ventricular fibrillation and 5 min of closed-chest CPR, defibrillation was performed in 16 domestic pigs to restore spontaneous circulation (ROSC). Ten minutes after ROSC, animals were allocated to receive either the ANG II antagonist, telmisartan, at a dose of 1 mg/kg (n = 8) or saline (n = 8). Hemodynamics, myocardial function and myocardial blood flow were measured prearrest and at 5, 30, 90 and 240 min after ROSC. Using a Swan-Ganz catheter with a fast responding-thermistor and a micromanometer tipped catheter, right ventricular end-diastolic and end-systolic volume, right ventricular ejection fraction, left ventricular contractility were 67 +/- 6 ml (mean +/- S.E.M.), 42 +/- 4 ml, 38 +/- 2%, 2036 +/- 77 mmHg/s in the telmisartan group and 82 +/- 2 ml (P < 0.05), 59 +/- 3 ml (P < 0.01), 28 +/- 2% (P < 0.01), 1596 +/- 82 mmHg/s (P < 0.01) in the control group, at 240 min after ROSC. No significant differences in mean aortic and pulmonary artery pressure, cardiac index or myocardial blood flow between the two groups were found. We conclude that the ANG II antagonist telmisartan administered during the postresuscitation phase in pigs increases myocardial contractility without changing cardiac index, systemic vascular resistance, pulmonary vascular resistance, or myocardial perfusion.
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Affiliation(s)
- H U Strohmenger
- Department of Anesthesiology and Critical Care Medicine, University of Ulm, Germany
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Gazmuri RJ, Becker J. Cardiac resuscitation. The search for hemodynamically more effective methods. Chest 1997; 111:712-23. [PMID: 9118713 DOI: 10.1378/chest.111.3.712] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- R J Gazmuri
- Medical Service, North Chicago VA Medical Center, IL 60064, USA
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