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Kandilis AN, Papadopoulou IP, Koskinas J, Sotiropoulos G, Tiniakos DG. Liver innervation and hepatic function: new insights. J Surg Res 2015; 194:511-519. [DOI: 10.1016/j.jss.2014.12.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 11/04/2014] [Accepted: 12/03/2014] [Indexed: 12/14/2022]
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Fukazawa K, Nishida S, Hibi T, Pretto EA. Crystalloid flush with backward unclamping may decrease post-reperfusion cardiac arrest and improve short-term graft function when compared to portal blood flush with forward unclamping during liver transplantation. Clin Transplant 2013; 27:492-502. [PMID: 23656400 DOI: 10.1111/ctr.12130] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2013] [Indexed: 12/17/2022]
Abstract
During liver transplant (LT), the release of vasoactive substances into the systemic circulation is associated with severe hemodynamic instability that is injurious to the recipient and/or the post-ischemic graft. Crystalloid flush with backward unclamping (CB) and portal blood flush with forward unclamping (PF) are two reperfusion methods to reduce reperfusion-related cardiovascular perturbations in our center. The primary aim of this study was to compare these two methods. After institutional review board (IRB) approval, cadaveric whole LT cases performed between 2003 and 2008 were reviewed. Patients were divided into two groups based on reperfusion methods: CB or PF. After background matching with propensity score, the effect of each method on post-operative graft function was assessed in detail. In our cohort of 478 patients, CB was used in 313 grafts and PF in 165. Thirty-day graft survival was lower, and risk of retransplantation was higher in PF. Multivariable model showed that CB is an independent factor to reduce primary non-function, cardiac arrest and improve 30-d graft survival. Also, the incidence of ischemic-type biliary lesions was significantly higher in the PF group. Reperfusion methods affect intraoperative hemodynamics and post-transplant outcome. CB allows for control over temperature and composition of the perfusate, perfusion pressure, and the rate of infusion.
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Affiliation(s)
- Kyota Fukazawa
- Division of Solid Organ Transplantation, Department of Anesthesiology, Perioperative Medicine and Pain Management, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
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Wang CH, Goto S, Chen CL, Lai CY, Kao YS, Lin YC, Eng HL, Huang CJ, Chen KH, Wang CC, Cheng YF, Jawan B. The Reaction of Posttransplant Denervated Liver on the Hemorrhagic Shock in Rats. Transplant Proc 2008; 40:2175-7. [DOI: 10.1016/j.transproceed.2008.07.098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Colle I, Van Vlierberghe H, Troisi R, De Hemptinne B. Transplanted liver: consequences of denervation for liver functions. ACTA ACUST UNITED AC 2005; 280:924-31. [PMID: 15382009 DOI: 10.1002/ar.a.20097] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Following liver transplantation, all hepatic nerves are transected; thus, liver allografts are completely isolated from neural control of their hosts. Despite this absolute denervation, liver allograft function does not appear to be significantly impaired after successful transplantation. In experimental animal models, hepatic denervation has no major effects on bile acid production and biotransformation, while it increases blood pressure and salt retention; decreases the number of hepatic progenitor cells, cholangiocyte proliferation, and liver regeneration; and influences the hepatic microcirculation, diet behavior, and glycemic control. In humans, hepatic denervation after liver transplantation has no major deleterious effects on bile secretion, liver regeneration, and hepatic blood flow. Insulin resistance and postprandial hyperglycemia, changes in ingestion behavior, and reduced stimulation of hepatic progenitor cells in the canals of Hering are the major side effects of absent liver innervation. Despite these abnormalities, patients can lead a new life with improved quality of life.
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Affiliation(s)
- Isabelle Colle
- Department of Hepato-Gastroenterology, Ghent University Hospital, Belgium.
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Mehrabi A, Golling M, Kashfi A, Boucsein T, Schemmer P, Gutt CN, Schmidt J, Büchler MW, Kraus TW. Negative impact of systemic catecholamine administration on hepatic blood perfusion after porcine liver transplantation. Liver Transpl 2005; 11:174-87. [PMID: 15666391 DOI: 10.1002/lt.20299] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Catecholamines are often administered during and after liver transplantation (LTx) to support systemic perfusion and to increase organ oxygen supply. Some vasoactive agents can compromise visceral organ perfusion. We followed the hypothesis that the vasculature of transplanted livers presents with a higher sensitivity, which leads to an increased vulnerability for flow derangement after application of epinephrine (Epi) or norepinephrine (NorEpi). Hepatic macroperfusion and microperfusion during systemic Epi or NorEpi infusion were measured by Doppler flow and thermodiffusion probes in porcine native, denervated, and transplanted livers (n = 16 in each group). Epi or NorEpi were infused (n = 8 in each subgroup) in predefined dosages (low dose = 5 microg/kg/minute and high dose = 10 microg/kg/minute) over 240 minutes. Systemic cardiocirculatory parameters were monitored continuously. Hepatic perfusion data were compared between all groups at comparable time points and dosages. In all native, denervated, and transplanted liver groups, Epi and NorEpi induced an inconsistent rise of mean arterial pressure and heart rate shortly after onset of infusion in both dosages compared with baseline. No significant differences of cardiovascular parameters at comparable time points were observed. In native livers, Epi and NorEpi induced only temporary alterations of hepatic macrocirculation and microcirculation, which returned to baseline 2 hours after onset of infusion. No significant alterations of hepatic blood flow were detected after isolated surgical denervation of the liver. By contrast, transplanted livers showed a progressive decline of hepatic macrocirculation (33-75% reduction) and microcirculation (39-58% reduction) during catecholamine infusions in a dose-dependent fashion. Characteristics of liver blood flow impairment were comparable for both vasoactive agents. In conclusion, pronounced disturbances of hepatic macrocirculation and microcirculation were observed during systemic Epi and NorEpi infusion after LTx compared with native and denervated livers. Microcirculation disturbances after LTx might be explained by impairment of hepatic blood flow regulation caused by an increased sensitivity of hepatic vasculature after ischemia-reperfusion and by lengthening of vasopressor effects caused by reduced hepatocyte metabolism. Clinicians should be aware of this potentially hazardous effect. Therefore, application of catecholamines after clinical LTx should be indicated carefully.
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Affiliation(s)
- Arianeb Mehrabi
- Division of Liver Transplantation, Department of General, Visceral, and Transplant Surgery, University of Heidelberg, 69120 Heidelberg, Germany.
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Truong H, McGinnis L, Dindo L, Honda CN, Giesler GJ. Identification of dorsal root ganglion neurons that innervate the common bile duct of rats. Exp Brain Res 2003; 155:477-84. [PMID: 14689139 DOI: 10.1007/s00221-003-1753-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2003] [Accepted: 10/03/2003] [Indexed: 10/26/2022]
Abstract
Pain originating in the bile duct is common and many patients who have suffered from it report that it is one of the most intense forms of pain that they have experienced. Many uncertainties remain about the mechanisms underlying pain originating in the bile duct. For example, the dorsal root ganglion (DRG) neurons that give rise to the sensory innervation of the common bile duct (CBD) have not been identified and examined in any species. The goal of the present study was to determine the number, distribution, and size of DRG neurons that innervate the CBD in rats. Injections of WGA-HRP or CTB-HRP were restricted to the lumen of the bile duct. Injections of WGA-HRP labeled a mean number of about 500 DRG neurons bilaterally throughout all thoracic and upper lumbar levels. Injections of CTB-HRP labeled smaller numbers of DRG neurons. Application of colchicine onto the surface of the CBD reduced the number of cells labeled following injections of WGA-HRP into the lumen of the CBD by roughly 86%, suggesting that tracer had not spread in large amounts out of the CBD and labeled afferent fibers in other tissues. Approximately 85% of the neurons labeled with WGA-HRP had cell bodies that were classified as small; the remainder were medium in size. Injections of CTB-HRP labeled cell bodies of varying sizes, including a few large diameter cell bodies. These results indicate that a large number of primarily small DRG cells, located bilaterally at many segmental levels, provide a rich innervation of the common bile duct.
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Affiliation(s)
- H Truong
- Department of Neuroscience, University of Minnesota, 6-145 Jackson Hall, Minneapolis, MN 55455, USA
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Wise PE, Wiley DH, Drougas JG, Marsh J, Feurer ID, Chapman WC, Blair KT, Wright JK, Eddy VA, Pinson CW. Effect of dopamine infusion on hemodynamics after hepatic denervation. J Surg Res 2001; 96:23-9. [PMID: 11180992 DOI: 10.1006/jsre.2000.6064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND . The effects of dopamine (DA) on systemic hemodynamics are better understood than its effects on hepatic hemodynamics, especially after liver denervation occurring during liver transplantation. Therefore, a porcine model was used to study DA's effects on hemodynamics after hepatic denervation. MATERIALS AND METHODS Fifteen pigs underwent laparotomy for catheter and flow probe placement. The experimental group (n = 7) also underwent hepatic denervation. After 1 week, all pigs underwent DA infusion at increasing doses (3-30 mcg/kg/min) while measuring hepatic parameters [portal vein flow (PVF), hepatic artery flow (HAF), total hepatic blood flow (THBF = HAF + PVF), portal and hepatic vein pressures] and systemic parameters [heart rate (HR), mean arterial pressure (MAP)]. RESULTS There was a significant increase in HAF from baseline to the 30 mcg/kg/min DA infusion rate (within-subjects P < 0.01), but the differences between the two groups were not significant. PVF and THBF showed large effects (increases) with denervation, but the increase in flow with DA infusion was not present after denervation. Perihepatic pressures were unchanged by denervation or DA. Heart rate differed significantly between the control and denervated animals at baseline, 3, 6, 12 (all P < 0.05), and 30 mcg/kg/min DA (P = 0.10). Control vs denervation MAP at baseline was 100 +/- 4 vs 98 +/- 4 Torr and at 30 mcg/kg/min it was 110 +/- 3 vs 101 +/- 5 mm Hg. CONCLUSIONS Hepatic flows tended to be higher after denervation. HAF showed similar increases with DA in both control and denervation groups. Increases in PVF and THBF with DA infusion were not present after denervation. HR was significantly decreased and MAP tended to be lower after denervation. The HR and MAP response to DA was similar in both groups. Therefore, both denervation and DA infusion have an effect on systemic and hepatic hemodynamics.
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Affiliation(s)
- P E Wise
- Division of Hepatobiliary Surgery and Liver Transplantation, Nashville Veterans Affairs Medical Center, Nashville, Tennessee 37232-4753, USA
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Abstract
Increasing numbers of individuals leading normal lives have transplanted organs. They may appear in any hospital for treatment of trauma or general diseases. Common anaesthesia methods can be used for these patients, but safe conduct of anaesthesia requires knowledge of the immunosuppression, risk factors, and altered physiology or drug actions. This article reviews the anaesthesia-related literature on patients with transplanted organs.
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Affiliation(s)
- H J Toivonen
- Department of Anaesthesia, University of Helsinki, Finland.
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Portmann B, Koukoulis G. Pathology of the liver allograft. CURRENT TOPICS IN PATHOLOGY. ERGEBNISSE DER PATHOLOGIE 1999; 92:61-105. [PMID: 9919807 DOI: 10.1007/978-3-642-59877-7_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- B Portmann
- Institute of Liver Studies, King's College Hospital, London, UK
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Kakumitsu S, Shijo H, Yokoyama M, Kim T, Akiyoshi N, Ota K, Kubara K, Okumura M, Inoue K. Effects of L-arginine on the systemic, mesenteric, and hepatic circulation in patients with cirrhosis. Hepatology 1998; 27:377-82. [PMID: 9462634 DOI: 10.1002/hep.510270210] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nitric oxide (NO) is known to play an important role in modulating both the hepatic and mesenteric circulation under physiological and pathological conditions. We investigated how L-arginine, a precursor of NO, modifies the hepatic and mesenteric circulation in patients with cirrhosis. The study design was a single-blind controlled study. We measured the systemic and portal hemodynamics before and following intravenous L-arginine and saline infusion using pulsed Doppler ultrasonography in 20 patients with cirrhosis, and then the effects were compared with those found in 20 healthy subjects. In these patients, the effects of L-arginine on hepatic circulation were investigated using hepatic catheterization. L-Arginine infusion induced systemic vasodilation in both the healthy controls and the cirrhotic patients in a similar hemodynamic manner. In these patients, the L-arginine-induced increase in the portal flow was significantly higher than that of cardiac output (CO); however, the relation was the inverse in healthy subjects. Moreover, the L-arginine-induced increase in the portal flow was greater in the cirrhotic patients than that seen in healthy subjects. As a result, L-arginine infusion was thus found to selectively augment the hepatopetal portal blood flow in the cirrhotic liver. In patients, L-arginine infusion induced marked hepatic vasodilation as demonstrated by the reduced hepatic sinusoidal resistance (HSR) and increased estimated hepatic blood flow (EHBF) associated with the ameliorated intrinsic clearance of indocyanine green. Despite the fall in HSR, the hepatic venous pressure gradient (HVPG) increased following L-arginine infusion. The mesenteric and hepatic vascular areas of cirrhosis exhibited an increased susceptibility to the dilator action of L-arginine. These findings suggest that the enhanced NO production in the splanchnic vascular area has an important role in the hepatic circulation in patients with cirrhosis.
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Affiliation(s)
- S Kakumitsu
- First Department of Internal Medicine, School of Medicine, Fukuoka University, Japan
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Lucchini S, Saumet JL, Mei N, Garnier L. Involvement of the vagus nerve, substance P and cholecystokinin in the regulation of intestinal blood flow. JOURNAL OF THE AUTONOMIC NERVOUS SYSTEM 1996; 60:182-92. [PMID: 8912269 DOI: 10.1016/0165-1838(96)00050-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Intestinal blood flow was recorded in anesthetized rats and cats using laser-Doppler flowmetry (LDF). This new technique provides continuous and accurate measurements of the intestinal blood flow, without affecting the blood circulation. Electrical stimulation (1 ms, 5-30 V, 5-50 Hz) applied either afferent or efferent vagal fibres elicited changes in the intestinal blood flow consisting mainly of increases. Similar results were obtained upon applying chemical stimulation to intestinal sensory endings using cholecystokinin (CCK) or substrance P (SP; 10-20 micrograms/kg intravenously given). Bilateral vagotomy and atropine treatment markedly reduced or suppressed these vascular effects. In addition experiments in which the activation of gastrointestinal afferents were activated by applying electrical stimulation to the abdominal vagal nerves yielded similar results. Finally, these effects were reduced after selectively severing vagal afferents. It is concluded that intestinal blood changes may be triggered by activation of the sensory endings from the digestive organs through the vagal nerves.
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Affiliation(s)
- S Lucchini
- Laboratoire de Neurobiologie, CNRS, Marseille, France
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12
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Abstract
Although it has been known for many years that the liver receives a nerve supply, it is only with the advent of immunohistochemistry that this innervation has been analysed in depth. It is now appreciated not only that many different nerve types are present, but also that there are significant differences between species, especially in the degree of parenchymal innervation. This has stimulated more detailed investigation of the innervation of the human liver in both health and disease. At the same time, functional studies have been underlining the important roles that these nerves play in processes as diverse as osmoreception and liver regeneration. This article briefly reviews current understanding of the morphology and functions of the hepatic nerve supply.
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Affiliation(s)
- D G Tiniakos
- Department of Pathology, University of Patras, Greece
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Hickman R, Stapleton GN, Mets B, Hlatshwayo S, Janicki P. Hepatic blood flow during reduced liver grafting in pigs. A comparison of controls and recipients of intact allografts. Dig Dis Sci 1995; 40:1246-51. [PMID: 7781441 DOI: 10.1007/bf02065532] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Intraoperative changes in portal venous and hepatic arterial flow were compared in porcine recipients of reduced liver grafts with recipients of intact grafts and sham-operated controls. Control animals showed no significant changes in hepatic blood flow (measured with perivascular ultrasonic cuffs), heart rate, mean arterial pressure, cardiac output, acid/base balance, plasma sodium, potassium, glucose, or catecholamines. Recipients of intact or reduced grafts showed hypotension, reduced cardiac output, tachycardia, and increased systemic vascular resistance during the anhepatic phase, which lasted approximately 30 min. These changes returned to normal in recipients of intact grafts but in recipients of reduced grafts, levels returned only to 50-60% of baseline. After intact grafting, total liver blood flow and the portal and arterial components returned to baseline within 2 hr of revascularization, but after reduced grafting, hepatic arterial flow values remained depressed to 50-60% of baseline. Plasma epinephrine and norepinephrine were unaltered during control operation but increased 4- to 20-fold in recipients of all grafts. These returned towards baseline in all except recipients of reduced grafts, in which norepinephrine levels remained significantly elevated for the 4 hr of postoperative study. These data highlight persistent elevation of plasma norepinephrine after reduced liver grafting, which may have contributed to the diminished hepatic arterial flow. These results need to be confirmed in adult recipients of split liver grafts in whom grafts are comparatively small. In such patients receiving donor livers which have undergone prolonged storage, the effects of increased plasma norepinephrine levels upon donor agonal arterial spasm may be significant.
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Affiliation(s)
- R Hickman
- Department of Surgery, University of Cape Town, Observatory, South Africa
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de Vries PJ, Hoekstra JB, de Hooge P, van Hattum J. Portal venous flow and follow-up in patients with liver disease and healthy subjects. Assessment with duplex Doppler. Scand J Gastroenterol 1994; 29:172-7. [PMID: 8171287 DOI: 10.3109/00365529409090458] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The evolution of portal venous flow in non-end-stage chronic liver disease with portal hypertension was assessed in 59 patients and compared with that in 55 control subjects and by means of duplex Doppler measurements by a single observer. All patients were prospectively followed up, and a repeated measurement was performed in a subgroup of 23 patients. The mean (+/- SD) portal venous diameter and velocity of patients versus controls were 11.2 (+/- 2.0) mm versus 10.1 (+/- 1.4) mm (p < 0.0005) and 11.0 (+/- 4.2) cm/sec versus 13.9 (+/- 4.1) cm/sec (p < 0.0005). The portal venous flow did not differ: 671 (+/- 291) ml/min versus 652 (+/- 203) ml/min. Diagnosis, Child class, and grade of varices did not influence the portal flow. Patients were followed up during a median (+/- SD) time of 47 (+/- 17) months. Nineteen (32%) patients died, and 14 (23%) had a variceal hemorrhage. Survival and hemorrhage were not correlated with the portal venous flow. Subsequent measurements in 23 patients showed a significant decrease in portal venous flow in 5 patients who died during follow-up. This was not found in the patients who survived. It is concluded that portal venous flow in chronic liver disease with portal hypertension is stable for a long time in the evolution of chronic liver disease. The existence of a 'portostat' is postulated. Only in the terminal stage of liver disease can a reduction of the portal venous flow be detected.
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Affiliation(s)
- P J de Vries
- Dept. of Gastroenterology, University Hospital, Utrecht, The Netherlands
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Navasa M, Feu F, García-Pagán JC, Jiménez W, Llach J, Rimola A, Bosch J, Rodés J. Hemodynamic and humoral changes after liver transplantation in patients with cirrhosis. Hepatology 1993. [PMID: 8444409 DOI: 10.1002/hep.1840170302] [Citation(s) in RCA: 90] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Splanchnic and systemic hemodynamics and plasma levels of aldosterone, glucagon and plasma renin were investigated in 12 patients with advanced cirrhosis before and 2 wk (14.6 +/- 2.8 days) and 2 mo (60.8 +/- 10.5 days) after orthotopic liver transplantation. Liver transplant was followed by significant (p < 0.01) changes in systemic hemodynamics at 2 wk, with a marked reduction in cardiac index (4.9 +/- 0.8 vs. 3.7 +/- 0.7 L/min.m2) and increases in mean arterial pressure (79 +/- 8 vs. 101 +/- 11 mm Hg) and peripheral vascular resistance (721 +/- 149 vs. 1,274 +/- 253 dyn.sec.cm-5). Two months after liver transplant, we saw further significant increases in peripheral vascular resistance (1,700 +/- 341 dyn.sec.cm-5; p < 0.05) without changes in cardiac index. Hepatic venous pressure gradient, very high before transplantation, was normal 2 wk after liver transplant (18.7 +/- 3.0 vs. 2.1 +/- 0.8 mm Hg; p < 0.01). Hepatic blood flow rose markedly from 1.03 +/- 0.46 to 2.25 +/- 0.79 L/min (p < 0.01) and was still elevated at 2 mo (1.84 +/- 0.74 L/min). Azygos blood flow had not changed after 2 wk with respect to pretransplant values (0.65 +/- 0.26 vs. 0.69 +/- 0.39 L/min) but had decreased significantly at 2 mo (0.39 +/- 0.16 L/min; p < 0.05). The elevated aldosterone, plasma renin and glucagon levels found in our cirrhotic patients before transplantation decreased to near-normal values 2 wk after the procedure. These results suggest that most of the hemodynamic and humoral abnormalities characteristic of advanced cirrhosis are reversed after liver transplant.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- M Navasa
- Liver Unit, Hospital Clínic i Provincial, Barcelona, Spain
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