Relationship between hepatic venous anatomy and hepatic venous blood loss during hepatectomy

Surgery Today ◽  
2021 ◽  
Author(s):  
Atsushi Nanashima ◽  
Yukinori Tanoue ◽  
Tatefumi Sakae ◽  
Isao Tsuneyoshi ◽  
Masahide Hiyoshi ◽  
...  
Keyword(s):  
Blood Loss ◽  
Venous Blood ◽  
Venous Anatomy ◽  
Hepatic Venous Blood ◽  
Hepatic Venous Anatomy

Off-pump direct hepatic veins-to-hemiazygos vein anastomosis after primary Kawashima operation: long-term result

2021 ◽  
pp. 1-3
Author(s):  
Renate Kaulitz ◽  
Gerhard Ziemer ◽  
Michael Hofbeck
Keyword(s):  
Venous Blood ◽  
Venous Drainage ◽  
Hepatic Veins ◽  
Off Pump ◽  
Hemiazygos Vein ◽  
Close Proximity ◽  
Hepatic Venous Blood ◽  
Balanced Distribution ◽  
Long Term Result

Abstract Direct hepatic veins-to-hemiazygos connection offers the balanced distribution of hepatic venous blood to both lungs, not requiring anticoagulation. We report a 13-year follow-up after this type of off-pump Fontan completion. Patient’s hepatic veins-to-hemiazygos confluence increased with growth to allow for unobstructed flow. This unique technique can be recommended in heterotaxy patients, if atrial hepatic venous drainage and hemiazygos vein are in close proximity.

Pre- and post-sinusoidal origin of hepatic exudate in anesthetized cats

1991 ◽  
Vol 69 (12) ◽  
pp. 1914-1916 ◽  
Author(s):  
C. V. Greenway ◽  
I. R. Innes ◽  
G. D. Scott
Keyword(s):  
Steady State ◽  
Venous Pressure ◽  
Venous Blood ◽  
Portal Blood ◽  
Substantial Part ◽  
Blood Concentrations ◽  
Small Doses ◽  
Hepatic Venous Blood

In cats anesthetized with pentobarbital, hepatic venous pressure was increased to cause drops of exudate to appear on the surface of the liver. These drops were collected during steady-state infusions of small doses of ethanol and galactose when there was a large arteriovenous gradient across the liver. Comparison of the concentrations of these substances in arterial, portal, and hepatic venous blood and exudate showed that the exudate concentrations were slightly higher than the hepatic venous concentrations but markedly lower than arterial and portal blood concentrations. We conclude that the exudate cannot be entirely formed in the space of Mall (presinusoidal) but a substantial part is postsinusoidal in origin. If the exudate is a mixture of fluids equilibrated with inflowing and outflowing blood, then 75–80% of the exudate is postsinusoidal and 20–25% is presinusoidal in origin.Key words: lymph, ascites, galactose, ethanol.

scholarly journals Surgical stress detection in human blood plasma by DSC

2020 ◽  
Vol 142 (2) ◽  
pp. 783-788 ◽  
Author(s):  
Andrea Ferencz ◽  
Dénes Lőrinczy
Keyword(s):  
Blood Loss ◽  
Blood Plasma ◽  
Surgical Intervention ◽  
Surgical Stress ◽  
Venous Blood ◽  
Operation Time ◽  
Major Surgery ◽  
Human Blood Plasma ◽  
Thermal Transitions ◽  
Surgical Interventions

Abstract It is a well-known fact that the extension of the surgical intervention influences both the success and time of the patient’s recovery, the degree of the blood loss, i.e., overall the patients’ surgical burden. Disease itself determines extent of surgical procedure (minor, intermediate or major surgery), which affects the risk and frequency of complications. Previous works have contributed to the validation of differential scanning calorimetry (DSC) as a potential non-invasive tool for diagnosing and monitoring several illnesses. Hence, the main goal of this study was to measure the effect of each surgical intervention on its own to blood plasma composition. Peripheral venous blood samples were collected from patients who underwent minor (n = 8), intermediate (n = 9) and major surgical interventions (n = 7). According our DSC data of blood plasma components, from the thermodynamic parameters, namely from the thermal transitions (Tm1–Tm8) to calorimetric enthalpy (ΔHcal) in proportion corresponded to the size of surgical interventions (duration of operation time, length of incision, surgical intraoperative stress, blood loss, etc.). This examination has shown that intraoperative stress during any surgical intervention affects the composition of plasma proteins, which should be always considered in the evaluation of DSC results in any surgical study.

Heparin Content of Thoracic Duct Lymph Following Shock in Dogs

1956 ◽  
Vol 188 (1) ◽  
pp. 189-192 ◽  
Author(s):  
Richard P. White ◽  
Parke H. Woodard
Keyword(s):  
Thoracic Duct ◽  
Venous Blood ◽  
Thoracic Duct Lymph ◽  
Duct Lymph ◽  
Hepatic Venous Blood

Anaphylactic or peptone shock causes a release of heparin which is present in greater concentrations in lymph obtained from the thoracic duct than in either arterial or hepatic venous blood. Frequently heparin is present only in thoracic duct lymph following such shock. The evidence indicates that the source of this heparin is the liver and that during shock its passage from liver to blood is mainly by means of the thoracic duct. Heparin is not released into thoracic duct lymph or blood during a histamine or hemorrhage induced shock.

Spontaneous closure of arterio-venous pulmonary fistulas by redirection of hepatic venous blood 9 years after Glenn anastomosis in a 12-year-old girl

2019 ◽  
Vol 29 (10) ◽  
pp. 1287-1289
Author(s):  
Katarzyna Gendera ◽  
Andreas Eicken ◽  
Peter Ewert
Keyword(s):  
Pulmonary Artery ◽  
Venous Blood ◽  
Covered Stent ◽  
Pulmonary Trunk ◽  
Surgical Ligation ◽  
Hepatic Venous Blood ◽  
Right Pulmonary Artery ◽  
The Right ◽  
Radiofrequency Perforation ◽  
Glenn Procedure

AbstractWe report on a 12-year-old girl with Ebstein’s anomaly after a unidirectional Glenn procedure with surgical ligation of the proximal right pulmonary artery, who suffered from significant central cyanosis caused by multiple arterio-venous fistulas in the right lung. The continuity between the right pulmonary artery and the pulmonary trunk was restored with the use of radiofrequency perforation and consecutive covered stent implantation.

An intracaval cannulation for obtaining pure, mixed hepatic venous blood samples

1978 ◽  
Vol 235 (2) ◽  
pp. H262-H265
Author(s):  
W. W. Lautt ◽  
C. Wong ◽  
J. S. Durham ◽  
P. Taillon
Keyword(s):  
Blood Pressure ◽  
Venous Blood ◽  
Vena Cava ◽  
Direct Stimulation ◽  
Blood Samples ◽  
Arterial Blood ◽  
Vascular Congestion ◽  
Hepatic Venous Blood ◽  
Surgical Preparation ◽  
Hepatic Nerves

A method for obtaining pure, mixed hepatic venous blood is described and evaluated in anesthetized cats. Hepatic vascular congestion does not occur with this “intracaval cannulation”, however small elevations in central venous blood pressure were noted. Although these changes persisted they did not result in systemic vascular congestion, judging from the normal arterial and portal pressures and from the lack of progressive decrease in arterial blood pressure. Blood samples obtained using the intracaval cannulation were shown to contain identical levels of oxygen as those obtained using a more complex surgical preparation. Reflux of blood from the vena cava does not occur during sampling. The responsiveness of this sampling method to rapid changes in venous content was evaluated by following the changes in glucose balance caused by direct stimulation of the hepatic nerves. The responses measured were similar to those measured in a separate set of experiments obtained using blood samples from a surgically isolated hepatic venous supply.

DO PLATELET INHIBITORS INCREASE OPERATIVE BLOOD LOSS?

1987 ◽  
Author(s):  
DAJ Galvin ◽  
A C Meek ◽  
P Pate ◽  
C N McCollum
Keyword(s):  
Blood Loss ◽  
Femoral Artery ◽  
Bleeding Time ◽  
Statistical Significance ◽  
Venous Blood ◽  
Haemoglobin Concentration ◽  
Potassium Cyanide ◽  
Graft Patency ◽  
Arterial Graft ◽  
Platelet Inhibitors

Although platelet inhibitory therapy improves arterial graft patency, surgeons are anxious that preoperative administration may increase operative bleeding. We investigated the effect of platelet inhibitors on blood loss during femoral artery replacement in dogs.Thirty greyhounds were randomised to receive placebo, a thromboxane antagonist GR32191 25mg (Glaxo Group Research) or aspirin 150mg (ASA) plus dipyridamole 50mg (DPM) twice daily starting 48 hours prior to implanting a 6cm length of 6mm PTFE in the femoral artery using standardised incision, mobilisation and anastomosis with 6.0 prolene. All bleeding was collected in swabs which were then thoroughly washed in 2L heparinised saline. The erythrocytes were haemolysed by adding potassium cyanide and the haemoglobin concentration measured in a Coulter Haemoglobinometer (Coulter Electronics). Blood loss was calculated by comparison to 1:500 dilution of the same animal’s venous blood. The bleeding time of the arterial anastomosis was also recorded.The mean (± sem) blood loss was similar in all three groups tending to be slightly less with GR32191 and ASA ± DPM at 135125 and 115±121 mis respectively, compared to 152±129 mis on placebo (NS). Anastomosis bleeding time appeared to be prolonged at 390±131 secs by the thromboxane antagonist compared to 291±40 with placebo and 224±136 with ASA and DPM, but this difference did not achieve statistical significance. There was a significant correlation (r=0.53) between blood loss and anastomotic bleeding time (p<0.001).This method of measuring blood loss is easily applicable to patients and does not demonstrate any important tendency to increased bleeding with preoperative platelet inhibitors.

scholarly journals Average Blood Flow and Oxygen Uptake in the Human Brain during Resting Wakefulness: A Critical Appraisal of the Kety—Schmidt Technique

1993 ◽  
Vol 13 (4) ◽  
pp. 646-655 ◽  
Author(s):  
Peter Lund Madsen ◽  
Søren Holm ◽  
Margrethe Herning ◽  
Niels A. Lassen
Keyword(s):  
Blood Flow ◽  
Venous Blood ◽  
Reference Method ◽  
Interindividual Variation ◽  
Venous Anatomy ◽  
Global Average ◽  
Computer Based ◽  
The Brain ◽  
True Values ◽  
Normal Adults

The Kety–Schmidt technique can be regarded as the reference method for measurement of global average cerebral blood flow (average CBF) and global average cerebral metabolic rate of oxygen (average CMRO2). However, in the practical application of the method, diffusion equilibrium for inert gas tracer between the brain and its venous blood is not reached. As a consequence, normal values for CBF and CMRO2 of 54 ml 100 g−1 min−1 and 3.5 ml 100 g−1 min−1 obtained with the Kety–Schmidt technique are an overestimation of the true values. Using the Kety–Schmidt technique we have performed 57 measurements of CBF and CMRO2 during EEG-verified wakeful rest in young normal adults. In order to estimate the equilibrium values for CBF and CMRO2, a simple computer-based simulation model was employed to quantitate the systematic overestimation caused by incomplete tracer equilibrium. When correcting the measured data, we find that the true average values for CBF and CMRO2 in the healthy young adult are ∼46 ml 100 g−1 min−1 and ∼3.0 ml 100 g−1 min−1. Previous studies have suggested that some of the variation in CMRO2 values could be ascribed to differences in cerebral venous anatomy. However in the present study, no correlation between CMRO2 and cerebral venous anatomy as imaged by magnetic resonance angiography could be established. Our data show that the interindividual variation of CMRO2 is 11% (coefficient of variation).

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