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Splanchnic perfusion

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https://www.readbyqxmd.com/read/29777353/intestinal-histopathological-changes-in-a-porcine-model-of-pneumoperitoneum-induced-intra-abdominal-hypertension
#1
Ester Párraga Ros, Laura Correa-Martín, Francisco M Sánchez-Margallo, Irma Eugenia Candanosa-Aranda, Manu L N G Malbrain, Robert Wise, Rafael Latorre, Octavio López Albors, Gregorio Castellanos
BACKGROUND: Low splanchnic perfusion is an immediate effect of pneumoperitoneum-induced intra-abdominal hypertension (IAH). Anatomical structure results in the intestinal mucosa being the area most sensitive to hypoperfusion. The relationship between intestinal injury and clinical parameters of tissue perfusion [abdominal perfusion pressure (APP), gastric intramucosal pH (pHi ) and lactic acid (Lc)] has not been previously studied. This study aimed to monitorize intestinal pathogenesis through sequential ileal biopsies and to measure APP, pHi , and Lc levels at different pneumoperitoneum-induced intra-abdominal pressures (20, 30, and 40 mmHg) to evaluate the potential relationships between them...
May 17, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29673130/effects-of-gip-on-regional-blood-flow-during-normoglycemia-and-hyperglycemia-in-anesthetized-rats
#2
Xiang Gao, Andreas Lindqvist, Monica Sandberg, Leif Groop, Nils Wierup, Leif Jansson
The incretin hormone glucose-dependent insulinotropic polypeptide (GIP) potentiates glucose-stimulated insulin secretion, and affects β-cell turnover. This study aimed at evaluating if some of the beneficial effects of GIP on glucose homeostasis can be explained by modulation of islet blood flow. Anesthetized Sprague-Dawley rats were infused intravenously with different doses of GIP (10, 20, or 60 ng/kg*min) for 30 min. Subsequent organ blood flow measurements were performed with microspheres. In separate animals, islets were perfused ex vivo with GIP (10-6 -10-12  mol/L) during normo- and hyperglycemia and arteriolar responsiveness was recorded...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29574759/humanizing-the-mouse-immune-system-to-study-splanchnic-organ-inflammation
#3
Brianyell McDaniel, Matthew B Grisham
It is well known that alterations in splanchnic organ perfusion and/or immune regulation may produce inflammatory tissue injury similar to that observed in several human disorders such as ischemia and reperfusion injury, food allergies, diabetes, inflammatory bowel disease and graft-versus-host disease. Mouse models have been tremendously important in defining the roles of the circulation, leukocyte trafficking, inflammatory mediator generation, immune regulation and the intestinal microbiota in the pathogenesis of acute and chronic inflammation...
March 24, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29508410/selective-cerebro-myocardial-perfusion-in-complex-neonatal-aortic-arch-pathology-midterm-results
#4
Stiljan Hoxha, Riccardo Giuseppe Abbasciano, Camilla Sandrini, Lucia Rossetti, Tiziano Menon, Luca Barozzi, Daniele Linardi, Alessio Rungatscher, Giuseppe Faggian, Giovanni Battista Luciani
Aortic arch repair in newborns and infants has traditionally been accomplished using a period of deep hypothermic circulatory arrest. To reduce neurologic and cardiac dysfunction related to circulatory arrest and myocardial ischemia during complex aortic arch surgery, an alternative and novel strategy for cerebro-myocardial protection was recently developed, where regional low-flow perfusion is combined with controlled and independent coronary perfusion. The aim of the present retrospective study was to assess short-term and mid-term results of selective and independent cerebro-myocardial perfusion in neonatal aortic arch surgery...
April 2018: Artificial Organs
https://www.readbyqxmd.com/read/29503018/assessment-of-systemic-adenosine-effect-using-color-doppler-ultrasound-of-the-splenic-artery-feasibility-and-potential-clinical-utility-for-coronary-interventions
#5
Oliver Klein-Wiele, Walied Sherifa, Marietta Garmer, Kaffer Kara, Dietrich Grönemeyer, Birgit Hailer
Adenosine induces coronary vasodilation and simultaneously reduces splanchnic perfusion. This effect can be absent in adenosine non-responders. Imaging of splanchnic arteries under adenosine assessing this effect has not been performed in humans previously. In 26 patients, splenic artery color Doppler was performed during an infusion of adenosine. Peak velocity in the splenic artery was measured before the infusion and at 2 min. Results were compared qualitatively with perfusion imaging in magnetic resonance...
May 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29425522/direct-splanchnic-perfusion-safely-avoids-deep-hypothermia
#6
REVIEW
Muhammad Aanish Raees, David P Bichell
Deep hypothermia for the operative correction of congenital cardiac lesions protects hypoperfused organs, mostly because of its effect on lowering metabolic demand and oxygen requirement. Deleterious cerebral and extracranial side effects of deep hypothermia itself calls for a reexamination of the therapeutic value of hypothermia, and has led to the development of alternative perfusion strategies. Here we describe the potential advantages of milder hypothermia over deep hypothermia and our method of a practical and reproducible implementation of multisite perfusion under mild hypothermia (32°C)...
March 2018: Seminars in Thoracic and Cardiovascular Surgery. Pediatric Cardiac Surgery Annual
https://www.readbyqxmd.com/read/29382813/acute-hypervolemic-infusion-can-improve-splanchnic-perfusion-in-elderly-patients-during-laparoscopic-colorectal-surgery
#7
Qian-Lin Zhu, Yun-Xin Deng, Bu-Wei Yu, Min-Hua Zheng, Jue Jin
BACKGROUND There is no adequate evidence on how the long duration of laparoscopic surgery affects splanchnic perfusion in elderly patients or the efficacy of acute hypervolemic fluid infusion (AHFI) during the induction of anesthesia. Our aim was to observe the effects of AHFI during the induction of general anesthesia on splanchnic perfusion. MATERIAL AND METHODS Seventy elderly patients receiving laparoscopic colorectal surgery were randomly divided into three groups: lactated Ringer's solution group (group R), succinylated gelatin group (group G), and hypertonic sodium chloride hydroxyethyl starch 40 injection group (group H)...
January 31, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29357386/time-course-evaluation-of-intestinal-structural-disorders-in-a-porcine-model-of-intra-abdominal-hypertension-by-mechanical-intestinal-obstruction
#8
Ester Párraga Ros, Laura Correa-Martín, Francisco M Sánchez-Margallo, Irma Eugenia Candanosa-Aranda, Manu L N G Malbrain, Robert Wise, Rafael Latorre, Octavio López Albors, Gregorio Castellanos
BACKGROUND: A mechanical intestinal obstruction (MIO) can generate intraabdominal hypertension (IAH) that is life threatening. The intestines are very sensitive to IAH since the low splanchnic perfusion causes intestinal hypoxia, local acidosis and bacterial translocations. This may lead to acute intestinal distress syndrome (AIDS). The identification of intestinal injuries during IAH and its correlation with clinical parameters as the abdominal perfusion pressure (APP), the gastric intramucosal pH (pHi) and lactic acid (Lc) are still unknown...
2018: PloS One
https://www.readbyqxmd.com/read/29338146/the-effect-of-various-doses-of-infusion-solutions-on-the-endothelial-glycocalyx-layer-in-laparoscopic-cholecystectomy-patients
#9
Matija Belavić, Vlatka Sotošek Tokmadžić, Elizabeta Fišić, Antonija Brozovic Krijan, Nedjeljko Strikić, Mirjana Lončarić Katušin, Josip Žunić
BACKGROUND: The endothelial glycocalyx is located on the luminal side of blood vessels and maintains vessel integrity. This study analysed how various dosages of infusion affected the secretion of atrial natriuretic peptide (ANP) and potential glycocalyx damage in patients undergoing laparoscopic cholecystectomy. We hypothesised that the liberal administration of Ringer's solution during the operation can cause iatrogenic hypervolemia with releasing of ANP and glycocalyx damage. METHODS: The study included 90 patients with American Society of Anesthesiologists' (ASA) class I and II, in good cardiopulmonary health, who were assigned to one of three groups: Restrictive group, which received 1 ml/kg/hr intraoperatively and six hours postoperatively; Low liberal group, which received 5 ml/kg/hr of Ringer's solution intraoperatively and six hours postoperatively and High liberal group, which received 15 ml/kg/hr intraoperatively and 10 ml/kg/hr six hours postoperatively...
January 16, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29282572/arterioportal-shunting-splanchnic-capillary-perfusion-and-the-effects-of-colloids-during-capnoperitoneum-in-neonatal-and-adolescent-pigs
#10
J F Kuebler, N Schukfeh, G Vieten, W A Osthaus, D Huber, N Dennhard, R Suempelmann, B M Ure, M L Metzelder
BACKGROUND: Clinical and experimental data indicate that neonates are sensitive to the CO2 pneumoperitoneum. An impaired splanchnic perfusion during laparoscopy in adults has been reported. We recently confirmed that intravenous colloids improve macrocirculatory function in neonates. We aimed to determine the impact of CO2 pneumoperitoneum on the perfusion of splanchnic organs in the young including effects of colloid application. METHODS: Male piglets (n = 25) were divided into four groups: (1) neonatal controls, (2) neonates with crystalloid restitution, (3) neonates with colloidal restitution, and (4) adolescents with crystalloid restitution...
December 27, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/29210030/pharmacologic-prevention-of-variceal-bleeding-and-rebleeding
#11
REVIEW
Anna Baiges, Virginia Hernández-Gea, Jaime Bosch
BACKGROUND: Variceal bleeding is a major complication of portal hypertension, which is associated with significant mortality. Moreover, patients surviving a variceal bleeding episode have very high risk of rebleeding, which is associated with mortality as high as that of the first bleed. Because of this, prevention of bleeding from gastroesophageal varices has been one of the main therapeutic goals since the advent of the first effective therapies for portal hypertension. AIM: This review deals with the present day state-of-the-art pharmacological prevention of variceal bleeding in primary and secondary prophylaxis...
February 2018: Hepatology International
https://www.readbyqxmd.com/read/29162665/the-beneficial-effects-of-curcumin-in-cirrhotic-rats-with-portal-hypertension
#12
Shao-Jung Hsu, Jing-Yi Lee, Te-Yueh Lin, Yu-Hsin Hsieh, Hui-Chun Huang, Fa-Yauh Lee, Han-Chieh Lin, Ming-Chih Hou, Shou-Dong Lee
In liver cirrhosis with portal hypertension, the uneven distribution of vasoactive substances leads to increased intrahepatic vascular resistance and splanchnic vasodilatation. Angiogenesis also induces increased portal inflow and portosystemic collaterals. The collaterals may induce lethal complications such as gastroesophageal variceal hemorrhage, but the therapeutic effect of vasoconstrictors is still suboptimal due to poor collateral vasoresponsivenss. Curcumin has aroused much attention for its antifibrosis, vasoactive, and anti-angiogenesis actions...
December 22, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28960522/near-infrared-spectroscopy-is-a-promising-noninvasive-technique-for-monitoring-the-effects-of-feeding-regimens-on-the-cerebral-and-splanchnic-regions
#13
Alice Grometto, Benedetta Pizzo, Maria Chiara Strozzi, Francesca Gazzolo, Diego Gazzolo
AIM: The effects of different milk and, or, administration regimens on cerebro-splanchnic perfusion are still a matter of debate. We investigated the effects of the bolus administration of breast milk or formula on cerebro-splanchnic oximetry, function and perfusion, assessed by near-infrared spectroscopy (NIRS). METHODS: This observational study of 30 infants fed with breast (n = 15) or formula (n = 15) milk, and matched for gestational age and birth weight, was carried out in the neonatal intensive care unit of the C Arrigo Children's Hospital, Alessandria, Italy, a tertiary-level referral centre, from October 2015 to December 2016...
February 2018: Acta Paediatrica
https://www.readbyqxmd.com/read/28915214/non-hemodynamic-effects-of-catecholamines
#14
Clair Hartmann, Peter Radermacher, Martin Wepler, Benedikt Nußbaum
Circulatory shock is defined as an imbalance between tissue oxygen supply and demand, and mostly results from a loss of blood volume, cardiac pump failure, and/or reduction of vasomotor tone. The clinical hallmarks of circulatory shock are arterial hypotension and lactate acidosis. Since the degree and duration of hypotension are major determinants of outcome, vasopressor administration represents a cornerstone therapy to treat these patients. Current guidelines recommend the use of catecholamines as the drug of first choice...
October 2017: Shock
https://www.readbyqxmd.com/read/28725436/factors-associated-with-increased-pancreatic-enzymes-in-septic-patients-a-prospective-study
#15
Anis Chaari, Karim Abdel Hakim, Nevine Rashed, Kamel Bousselmi, Vipin Kauts, Mahmoud Etman, William Francis Casey
BACKGROUND: The perfusion of splanchnic organs is deeply altered in patients with septic shock. The aim of the study is to identify the predictive factors of septic shock-induced increase of serum lipase and amylase and to assess and evaluate its prognostic impact. METHODS: We conducted a prospective observational study. All adult patients admitted with septic shock were eligible for our study. Serum lipase and amylase were measured on admission. Patients with and those without increased pancreatic enzymes were compared...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28709662/neonatal-aortic-arch-reconstruction-with-direct-splanchnic-perfusion-avoids-deep-hypothermia
#16
Muhammad Aanish Raees, Clinton D Morgan, Venessa L Pinto, Ashly C Westrick, Chevis N Shannon, Karla G Christian, Bret A Mettler, David P Bichell
BACKGROUND: Neonatal aortic arch reconstruction, typically performed with deep hypothermia and selective cerebral perfusion, leaves splanchnic organ protection dependent on hypothermia alone. A simplified method of direct in-field descending aortic perfusion during neonatal arch reconstruction permits the avoidance of deep hypothermia. We hypothesize that direct splanchnic perfusion at mild hypothermia provides improved or equivalent safety compared with deep hypothermia and may contribute to postoperative extracardiac organ recovery...
December 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28704836/abdominal-near-infrared-spectroscopy-detects-low-mesenteric-perfusion-early-in-preterm-infants-with-hemodynamic-significant-ductus-arteriosus
#17
Ana Ledo, Marta Aguar, Antonio Núñez-Ramiro, Pilar Saénz, Máximo Vento
BACKGROUND: The therapeutic decision to close patent ductus arteriosus in preterm infants entails great uncertainty. Near-infrared spectroscopy is a noninvasive bedside technique used to monitor mixed regional oxygen saturation. We hypothesized that near-infrared spectroscopy could identify preterm infants at risk of mesenteric hypoperfusion associated with hemodynamically significant ductus arteriosus. METHODS: This is a prospective observational study including consecutively admitted preterm infants with a gestational age <32 weeks...
2017: Neonatology
https://www.readbyqxmd.com/read/28684188/ascorbate-lacks-significant-influence-in-rats-with-bile-duct-ligation-induced-liver-injury
#18
Hsin-Ling Ho, Teh-Ia Huo, Ting Chang, Wen-Shin Lee, I-Fang Hsin, Fa-Yauh Lee, Hui-Chun Huang, Ming-Chih Hou, Shou-Dong Lee
BACKGROUND: Liver inflammation may induce fibrogenesis, cirrhosis and portal hypertension. Liver cirrhosis is characterized by increased intrahepatic resistance and enhanced vasoconstrictive response. The splanchnic vasodilatation, angiogenesis and portosystemic collaterals formation further bring about lethal complications. Ascorbate is a potent antioxidant with anti-inflammation, anti-fibrosis, and anti-angiogenesis effects. However, the relevant influences in chronic liver injury have not been sufficiently explored...
July 3, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28673081/enteral-feeding-of-intrauterine-growth-restriction-preterm-infants-theoretical-risks-and-practical-implications
#19
Valentina Bozzetti, Paolo E Tagliabue
Intrauterine growth restriction (IUGR) infants are thought to have impaired gut function after birth secondary to intrauterine redistribution of the blood flow, due to placental insufficiency, with a consequent reduction of gut perfusion. For this reason, infants complicated by IUGR have been considered at higher risk of feeding intolerance. Postnatal evaluation of splanchnic perfusion, through Doppler of the superior mesenteric artery, and of splanchnic oxygenation, through near infrared spectroscopy measurements, may be useful in evaluating the persistence (or not) of the redistribution of blood flow occurred in utero...
June 28, 2017: La Pediatria Medica e Chirurgica: Medical and Surgical Pediatrics
https://www.readbyqxmd.com/read/28554928/epidural-analgesia-in-critically-ill-patients-with-acute-pancreatitis-the-multicentre-randomised-controlled-epipan-study-protocol
#20
Stéphanie Bulyez, Bruno Pereira, Elodie Caumon, Etienne Imhoff, Laurence Roszyk, Lise Bernard, Leo Bühler, Claudia Heidegger, Samir Jaber, Jean-Yves Lefrant, Russell Chabanne, Pierre-Marie Bertrand, Pierre-François Laterre, Philippe Guerci, Pierre-Eric Danin, Etienne Escudier, Achille Sossou, Dominique Morand, Vincent Sapin, Jean-Michel Constantin, Matthieu Jabaudon
BACKGROUND: Acute pancreatitis (AP) is associated with high morbidity and mortality in its most severe forms. Most patients with severe AP require intubation and invasive mechanical ventilation, frequently for more than 7 days, which is associated with the worst outcome. Recent increasing evidence from preclinical and clinical studies support the beneficial effects of epidural analgesia (EA) in AP, such as increased gut barrier function and splanchnic, pancreatic and renal perfusion, decreased liver damage and inflammatory response, and reduced mortality...
May 29, 2017: BMJ Open
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