RÉSUMÉ
RATIONALE: This initiative is focused on building a global consensus around core diagnostic criteria for malnutrition in adults in clinical settings. METHODS: In January 2016, the Global Leadership Initiative on Malnutrition (GLIM) was convened by several of the major global clinical nutrition societies. GLIM appointed a core leadership committee and a supporting working group with representatives bringing additional global diversity and expertise. Empirical consensus was reached through a series of face-to-face meetings, telephone conferences, and e-mail communications. RESULTS: A two-step approach for the malnutrition diagnosis was selected, i.e., first screening to identify "at risk" status by the use of any validated screening tool, and second, assessment for diagnosis and grading the severity of malnutrition. The malnutrition criteria for consideration were retrieved from existing approaches for screening and assessment. Potential criteria were subjected to a ballot among the GLIM core and supporting working group members. The top five ranked criteria included three phenotypic criteria (weight loss, low body mass index, and reduced muscle mass) and two etiologic criteria (reduced food intake or assimilation, and inflammation or disease burden). To diagnose malnutrition at least one phenotypic criterion and one etiologic criterion should be present. Phenotypic metrics for grading severity as Stage 1 (moderate) and Stage 2 (severe) malnutrition are proposed. It is recommended that the etiologic criteria be used to guide intervention and anticipated outcomes. The recommended approach supports classification of malnutrition into four etiology-related diagnosis categories. CONCLUSION: A consensus scheme for diagnosing malnutrition in adults in clinical settings on a global scale is proposed. Next steps are to secure further collaboration and endorsements from leading nutrition professional societies, to identify overlaps with syndromes like cachexia and sarcopenia, and to promote dissemination, validation studies, and feedback. The diagnostic construct should be re-considered every 3-5 years.
Sujet(s)
Malnutrition/diagnostic , Adulte , Indice de masse corporelle , Consensus , Consommation alimentaire , Santé mondiale , Humains , Phénotype , Sarcopénie/diagnostic , Perte de poidsRÉSUMÉ
RATIONALE: This initiative is focused on building a global consensus around core diagnostic criteria for malnutrition in adults in clinical settings. METHODS: In January 2016, the Global Leadership Initiative on Malnutrition (GLIM) was convened by several of the major global clinical nutrition societies. GLIM appointed a core leadership committee and a supporting working group with representatives bringing additional global diversity and expertise. Empirical consensus was reached through a series of face-to-face meetings, telephone conferences, and e-mail communications. RESULTS: A two-step approach for the malnutrition diagnosis was selected, i.e., first screening to identify "at risk" status by the use of any validated screening tool, and second, assessment for diagnosis and grading the severity of malnutrition. The malnutrition criteria for consideration were retrieved from existing approaches for screening and assessment. Potential criteria were subjected to a ballot among the GLIM core and supporting working group members. The top five ranked criteria included three phenotypic criteria (non-volitional weight loss, low body mass index, and reduced muscle mass) and two etiologic criteria (reduced food intake or assimilation, and inflammation or disease burden). To diagnose malnutrition at least one phenotypic criterion and one etiologic criterion should be present. Phenotypic metrics for grading severity as Stage 1 (moderate) and Stage 2 (severe) malnutrition are proposed. It is recommended that the etiologic criteria be used to guide intervention and anticipated outcomes. The recommended approach supports classification of malnutrition into four etiology-related diagnosis categories. CONCLUSION: A consensus scheme for diagnosing malnutrition in adults in clinical settings on a global scale is proposed. Next steps are to secure further collaboration and endorsements from leading nutrition professional societies, to identify overlaps with syndromes like cachexia and sarcopenia, and to promote dissemination, validation studies, and feedback. The diagnostic construct should be re-considered every 3-5 years.
Sujet(s)
Internationalité , Malnutrition/diagnostic , Évaluation de l'état nutritionnel , Adulte , Consensus , Humains , Leadership , État nutritionnel , Sociétés savantesRÉSUMÉ
BACKGROUND: A lack of agreement on definitions and terminology used for nutrition-related concepts and procedures limits the development of clinical nutrition practice and research. OBJECTIVE: This initiative aimed to reach a consensus for terminology for core nutritional concepts and procedures. METHODS: The European Society of Clinical Nutrition and Metabolism (ESPEN) appointed a consensus group of clinical scientists to perform a modified Delphi process that encompassed e-mail communication, face-to-face meetings, in-group ballots and an electronic ESPEN membership Delphi round. RESULTS: Five key areas related to clinical nutrition were identified: concepts; procedures; organisation; delivery; and products. One core concept of clinical nutrition is malnutrition/undernutrition, which includes disease-related malnutrition (DRM) with (eq. cachexia) and without inflammation, and malnutrition/undernutrition without disease, e.g. hunger-related malnutrition. Over-nutrition (overweight and obesity) is another core concept. Sarcopenia and frailty were agreed to be separate conditions often associated with malnutrition. Examples of nutritional procedures identified include screening for subjects at nutritional risk followed by a complete nutritional assessment. Hospital and care facility catering are the basic organizational forms for providing nutrition. Oral nutritional supplementation is the preferred way of nutrition therapy but if inadequate then other forms of medical nutrition therapy, i.e. enteral tube feeding and parenteral (intravenous) nutrition, becomes the major way of nutrient delivery. CONCLUSION: An agreement of basic nutritional terminology to be used in clinical practice, research, and the ESPEN guideline developments has been established. This terminology consensus may help to support future global consensus efforts and updates of classification systems such as the International Classification of Disease (ICD). The continuous growth of knowledge in all areas addressed in this statement will provide the foundation for future revisions.
Sujet(s)
Malnutrition/diagnostic , Malnutrition/thérapie , Politique nutritionnelle , Terminologie comme sujet , Cachexie/complications , Consensus , Régime alimentaire , Nutrition entérale , Fragilité/complications , Humains , Évaluation de l'état nutritionnel , État nutritionnel , Obésité/complications , Surpoids/complications , Nutrition parentérale , Sarcopénie/complications , Sociétés savantesRÉSUMÉ
PURPOSE: Adverse oral symptoms gradually appear in advanced cancer patients as the disease progresses. We retrospectively investigated the associations between the incidence of oral problems and the days to death (DTD) in patients receiving palliative care. METHODS: The dental assessment sheets and medical charts of 105 patients who had been admitted into the palliative care unit at our hospital were examined. Case data included evaluations of organic and functional oral conditions at the time of admission for all patients. The cohort was divided into two groups according to the DTD as the short group (<28 days from the time of dental assessment until death) and the long group (≥28 days). We compared the incidences of organic and functional oral problems between these groups. RESULTS: Dry mouth, tongue inflammation, and bleeding spots were significantly more frequent in the short group than in the long group (78 vs. 54% for dry mouth, 67 vs. 46% for tongue inflammation, 35 vs. 14% for bleeding spots, respectively; p < 0.05). Tongue coating and candidiasis were comparable between the two groups. Dysphagia was significantly more common in the short group (43%) than in the long group (20%) (p = 0.01), as was assistance with oral health care (76 vs. 50%) (p = 0.01). CONCLUSIONS: Our findings suggest that, during palliative care, oral complications appear more frequently when the DTD period is shorter. These symptoms may be useful indicators when deciding on the proper timing of intensive oral care intervention to decrease oral problems and pain in terminally ill patients.
Sujet(s)
Maladies de la bouche/mortalité , Tumeurs/complications , Soins palliatifs/méthodes , Soins de réanimation , Mort , Femelle , Humains , Mâle , Maladies de la bouche/complications , Santé buccodentaire , Études rétrospectivesRÉSUMÉ
A tapered parallel plate waveguide was developed for frequency up-conversion experiments in the terahertz (THz) region by flash ionization. The element at the plasma-source-wave interaction area determines the conversion efficiency. It causes THz pulses to converge to a narrow plate separation, which is smaller than the wavelength. The waveguide exhibited good performance for transmitting p-polarized THz pulses in a 50 µm separation, making it suitable for flash ionization experiments.
Sujet(s)
Équipement et fournitures pour les applications des radiations , Lasers , Modèles théoriques , Gaz plasmasRÉSUMÉ
A proof-of-principle experiment demonstrates the generation of radiation from the Cherenkov wake excited by an ultrashort- and ultrahigh-power pulse laser in a perpendicularly magnetized plasma. The frequency of the radiation is in the millimeter range (up to 200 GHz). The intensity of the radiation is proportional to the magnetic field intensity as expected by theory. Polarization of the emitted radiation is also detected. The difference in the frequency of the emitted radiation between these experiments and previous theory can be explained by the electrons' oscillation in the electric field of a narrow column of ions in the focal region.
RÉSUMÉ
A frequency upshift of a short microwave pulse is generated by the interaction between a relativistic underdense ionization front and a periodic electrostatic field with a perpendicular dc magnetic field. When the dc magnetic field is applied, further frequency upshift of 3 GHz is observed with respect to an unmagnetized case which has typically a GHz range. The radiation frequency depends on both the plasma density and the strength of the dc magnetic field, i.e., the plasma frequency and the cyclotron frequency. The frequency of the emitted radiation is in reasonable agreement with the theoretical values.
RÉSUMÉ
From September 1976 to February 1998, we experienced 75 resected patients with hilar cholangiocarcinoma. Curative resection was performed in 45 patients (60.0%), with a cumulative 5-year survival rate of 39.8%. In this retrospective study, we compared therapeutic outcomes in these 75 patients according to the period during which they were treated; (1) 12 patients in the early period (September 1976 to August 1981) chiefly treated by bile duct resection, (2) 50 patients in the middle period, September 1981 to August 1994, chiefly treated by aggressive surgical procedures with extensive hepatectomy plus caudate lobe resection, and (3) 13 patients in the late period, September 1994 to February 1998, during which percutaneous transhepatic portal embolization was introduced to increase the safety and curability of extended hepatectomy, and limited hepatectomy was selected according to tumor spread. In the late period, total resection of the caudate lobe was done in all patients, with the aim being thorough resection of cancer cells in the caudate lobe. The curative resection rates were 16.7% in the early period, 64.0% in the middle period, and 84.6% in the late period, showing an improvement year-by-year (P<0.05; early period vs middle period and late period). All patients in the early period died within 2 years of resection, whereas the 5-year survival rate in the middle period was 24.4%, significantly improved (P<0.05) compared with the early period. The 1- and 3-year survival rates of 84.6% and 58.0%, respectively, in the late period, show an even greater improvement in outcome.
Sujet(s)
Tumeurs des canaux biliaires/chirurgie , Conduits biliaires intrahépatiques , Cholangiocarcinome/chirurgie , Hépatectomie/méthodes , Adulte , Sujet âgé , Tumeurs des canaux biliaires/diagnostic , Tumeurs des canaux biliaires/mortalité , Cholangiocarcinome/diagnostic , Cholangiocarcinome/mortalité , Femelle , Hépatectomie/mortalité , Humains , Japon , Mâle , Adulte d'âge moyen , Pronostic , Études rétrospectives , Analyse de survie , Taux de survie , Résultat thérapeutiqueRÉSUMÉ
A case of breast cancer with choriocarcinomatous features (BCCF) is reported. The patient was a 38-year-old Japanese female with a long history of schizophrenia. Her nursing staff noticed a palpable mass in her right breast, which showed rapid growth. Following cytopathologic confirmation of a malignant breast tumor, she underwent mastectomy with ipsilateral axillary lymph node dissection. Histologic examination revealed BCCF, which was positive for placental alkaline phosphatase and human chorionic gonadotropin (HCG) by immunohistochemistry. The serum HCG level was high. She died 7 months postoperatively, with multiple metastases of BCCF to the chest wall, lung and liver.
Sujet(s)
Tumeurs du sein/anatomopathologie , Carcinome canalaire du sein/anatomopathologie , Choriocarcinome/anatomopathologie , Adulte , Phosphatase alcaline/analyse , Tumeurs du sein/composition chimique , Tumeurs du sein/chirurgie , Carcinome canalaire du sein/composition chimique , Carcinome canalaire du sein/chirurgie , Choriocarcinome/composition chimique , Choriocarcinome/chirurgie , Gonadotrophine chorionique/analyse , Issue fatale , Femelle , Humains , Techniques immunoenzymatiques , Lymphadénectomie , Métastase lymphatiqueRÉSUMÉ
BACKGROUND/AIM: Since July 1994, we have been conducting a prospective study of a protocol for selection of treatment of acute pancreatitis based on scoring of severity. METHODS: From July 1994 to June 1998, 56 patients with acute pancreatitis were enrolled in this study. The protocol employed was based on the results of our retrospective study. On admission, the prognosis score (scoring of severity of acute pancreatitis based on the criteria of the Ministry of Health and Welfare of Japan) and APACHE II score were calculated, and early treatment was selected according to the protocol. RESULTS: All of the 26 patients with gallstone pancreatitis and 28 of 30 patients with non-gallstone pancreatitis were successfully treated and had good outcome. There were 2 deaths in non-gallstone pancreatitis. In selection of early treatment according to the scoring of severity, we suggested that when the prognosis score is 2 or more and the APACHE II score of 8 or more, gallstone pancreatitis should be treated by biliary drainage, and non-gallstone pancreatitis by peritoneal lavage. When infected pancreatic necrosis is exhibited, surgery is indicated. CONCLUSION: Our new management protocol for acute pancreatitis based on the prognosis score and APACHE II score appear to be useful for accurately scoring severity and selecting the treatment methods.
Sujet(s)
Lithiase biliaire/complications , Pancréatite/anatomopathologie , Maladie aigüe , Lithiase biliaire/anatomopathologie , Humains , Pancréatite/classification , Valeur prédictive des tests , Pronostic , Études prospectives , Indice de gravité de la maladieRÉSUMÉ
IS-741, a new synthetic anti-inflammatory agent, is known to have some inhibitory effect on cytosolic phospholipase A2 (cPLA2), an enzyme which hydrolyzes cellular phospholipids, liberating fatty acids and lysophospholipids and providing the precursor substrates for the biosynthesis of eicosanoids and platelet-activating factor. cPLA2 is therefore an attractive target for the development of novel therapies. During infusion of lactated Ringer's solution at a rate of 10 ml/kg/h, acute pancreatitis was induced in dogs by injecting autologous gallbladder bile into the main pancreatic duct. The dogs were then divided into two groups: group A (nontreatment), no treatment during the experiment, and group B (IS-741), intravenously injected with IS-741 at 6 and 30 h after induction of acute pancreatitis. As a result, the survival rate was significantly higher in group B than in group A. Mean arterial pressure and PaO2 were well maintained in group B as compared with group A. The NAG index, which is known to be markedly increased in renal tubular damage, was significantly lower in group B than in group A. Histological examination of the pancreas, lung, and kidney in group B showed milder changes than in group A. cPLA2 activity in the pancreas, lung and renal cortex was much lower in group B than in group A, but sPLA2 activity in these tissues did not differ significantly between the two groups. In conclusion, IS-741 exerts a potentially therapeutic effect on experimental acute pancreatitis by mitigating the degree of damage in the pancreas, lung, and kidney. The inhibitory effect of IS-741 on cPLA2 may contribute to one of the antiinflammatory mechanisms of actions of this agent.
Sujet(s)
Antienzymes/pharmacologie , Défaillance multiviscérale/prévention et contrôle , Pancréatite aigüe nécrotique/traitement médicamenteux , Phospholipases A/effets des médicaments et des substances chimiques , Pyridines/pharmacologie , Animaux , Cytosol/enzymologie , Modèles animaux de maladie humaine , Chiens , Antienzymes/administration et posologie , Femelle , Injections veineuses , Rein/anatomopathologie , Poumon/anatomopathologie , Mâle , Pancréatite aigüe nécrotique/complications , Pancréatite aigüe nécrotique/anatomopathologie , Phospholipases A2 , Pyridines/administration et posologie , Répartition aléatoire , Analyse de survie , Résultat thérapeutiqueRÉSUMÉ
The intestine is now known to be an important site of protein production in the body, and glutamine (GLN) stimulates both secreted and non-secreted protein synthesis in the small bowel. The purpose of the present study was to evaluate the effect of GLN-supplemented parenteral nutrition on liver regeneration after hepatectomy. Animals were divided into two groups: a sham-operated control group (Group A) and a 70%-hepatectomy group (Group B). Postoperatively, one-third of the animals in each group were maintained on intravenous 10% glucose solution, on 10% glucose with 2% standard amino acid solution, or 10% glucose supplemented with 2% glutamine for 24 h. GLN administration after hepatectomy significantly promoted liver regeneration. In addition, assessment of amino acid metabolism showed that GLN administration activated GLN metabolism in the intestine and promoted alanine uptake by the remnant liver. This metabolic response also enhanced both secreted and non-secreted protein synthesis in intestinal epithelial cells, especially in cells isolated from the crypts. The proteins produced are important as a portal production factor for liver regeneration and intestinal cell proliferation. Bacterial and endotoxin translocation, on the other hand, was significantly reduced. Thus, the results of this study suggest that intravenous administration of GLN after hepatectomy significantly promoted liver regeneration.
Sujet(s)
Glutamine/pharmacologie , Régénération hépatique/effets des médicaments et des substances chimiques , Acides aminés/métabolisme , Animaux , Translocation bactérienne/physiologie , Numération cellulaire , Chiens , Endotoxines/sang , Escherichia coli/physiologie , Femelle , Glutamine/administration et posologie , Hépatectomie , Perfusions veineuses , Muqueuse intestinale/cytologie , Muqueuse intestinale/métabolisme , Muqueuse intestinale/microbiologie , Jéjunum/cytologie , Jéjunum/métabolisme , Jéjunum/microbiologie , Foie/cytologie , Foie/effets des médicaments et des substances chimiques , Foie/métabolisme , Mâle , Protéines/métabolisme , Phase S , Staphylococcus/physiologieRÉSUMÉ
A case of matrix-producing carcinoma (MPC), which is a unique variant of breast cancer, is described with cytopathological and radiographical findings. A 75-year-old female presented with a palpable mass in her right breast. After confirmation of the cytopathological diagnosis, the patient received a right mastectomy with ipsilateral axillary lymph node dissection. The histopathological examination revealed MPC. The Union Internationalis Contra Cancrum postoperative clinical stage was IIB. The patient is well and without disease 18 months after the surgery.
Sujet(s)
Tumeurs du sein/imagerie diagnostique , Tumeurs du sein/anatomopathologie , Carcinome canalaire du sein/imagerie diagnostique , Carcinome canalaire du sein/anatomopathologie , Sujet âgé , Aisselle , Tumeurs du sein/chirurgie , Carcinome canalaire du sein/chirurgie , Femelle , Humains , Lymphadénectomie , Noeuds lymphatiques/anatomopathologie , Métastase lymphatique , Imagerie par résonance magnétique , Mastectomie , Métaplasie , TomodensitométrieSujet(s)
Drainage/méthodes , Agents gastro-intestinaux/usage thérapeutique , Octréotide/usage thérapeutique , Pseudokyste du pancréas/thérapie , Somatostatine/analogues et dérivés , Adulte , Cholangiopancréatographie rétrograde endoscopique , Humains , Mâle , Pseudokyste du pancréas/imagerie diagnostiqueRÉSUMÉ
To determine the efficacy of antibiotics in the prevention of pancreatic infection and the process of aggravation after induction of acute pancreatitis, antibiotic was administrated intravenously or intraarterially, starting 6 h after acute pancreatitis was induced in dogs by injecting autologous gallbladder bile into the main pancreatic duct. Flomoxef, recognized as an antibiotic able to penetrate well into pancreas tissue, was selected for the present study. Animals were divided into three groups: no antibiotic given (Group A), antibiotic given intravenously as a bolus injection of 25 mg/kg every 6 h (Group B), and antibiotic infused continuously into the celiac trunk (4 mg/kg/h) (Group C). Compared with Group A, continuous intraarterial infusion of antibiotic (Group C) significantly improved the survival rate and decreased the serum levels of phospholipase A2(PLA2) activity and endotoxin. Furthermore, it completely prevented the occurrence of pancreatic infection, not only ameliorating the severity of pancreatic necrosis but also reducing the activity levels of amidase, trypsin-like enzyme, and PLA2 in pancreas tissue. Group B showed little beneficial effect. Antibiotic concentration in peripheral blood and pancreas tissue was significantly higher in Group C than in Group B. These results suggest that continuous arterial infusion of antibiotics into the feeding artery of the pancreas is an effective modality for preventing pancreatic infection and aggravation of severe acute pancreatitis.
Sujet(s)
Antibactériens/administration et posologie , Infections bactériennes/prévention et contrôle , Pancréatite aigüe nécrotique/microbiologie , Amidohydrolases/métabolisme , Animaux , Antibactériens/usage thérapeutique , Chiens , Escherichia coli/isolement et purification , Infections à Escherichia coli/microbiologie , Femelle , Perfusions artérielles , Injections veineuses , Mâle , Pancréas/enzymologie , Pancréas/microbiologie , Pancréatite aigüe nécrotique/traitement médicamenteux , Pancréatite aigüe nécrotique/étiologie , Phospholipases A/sang , Phospholipases A/métabolisme , Phospholipases A2 , Trypsine/métabolismeRÉSUMÉ
The expression of epidermal growth factor receptor (EGFR), c-erbB-2, and c-erbB-3 was examined immunohistochemically in 57 cases of periampullary carcinoma. The percentage of Ki-67-positive cells was also examined in the same tissue, to determine the relationship between the expression of the members of the type I growth factor receptor family and cell proliferation. In carcinoma of the head of pancreas, the percentage of cases with overexpression of c-erbB-3 was significantly higher than with overexpression of c-erbB-2 and EGFR. In contrast, in lower bile duct carcinoma and carcinoma of the ampulla of Vater, the percentages of cases with overexpression of c-erbB-2 was greater than with overexpression of other growth factor receptors. A higher percentage of cases with overexpression of c-erbB-3 in pancreatic head carcinoma and overexpression of c-erbB-2 in carcinoma of the ampulla of Vater was found in Ki-67 antigen-positive cases. Moreover, the overexpression of c-erb-3 in pancreatic head carcinoma, c-erb-2 in ampulla of Vater carcinoma, and Ki-67 in both carcinomas was found to be associated with poor patient outcome. These results demonstrate that different members of the type I growth factor receptor family are overexpressed in different carcinomas of the periampullary region.
Sujet(s)
Adénocarcinome/métabolisme , Ampoule hépatopancréatique , Tumeurs des canaux biliaires/métabolisme , Tumeurs du pancréas/métabolisme , Récepteur facteur croissance/métabolisme , Adénocarcinome/anatomopathologie , Tumeurs des canaux biliaires/anatomopathologie , Division cellulaire , Tumeurs du cholédoque/métabolisme , Tumeurs du cholédoque/anatomopathologie , Récepteurs ErbB/métabolisme , Expression des gènes , Humains , Techniques immunoenzymatiques , Antigène KI-67 , Protéines tumorales/métabolisme , Protéines nucléaires/métabolisme , Tumeurs du pancréas/anatomopathologie , Protéines proto-oncogènes/métabolisme , Récepteur ErbB-2/métabolisme , Récepteur ErbB-3 , Résultat thérapeutiqueRÉSUMÉ
1. We studied the effect of sepsis and the regulation by glutamine of protein synthesis in enterocytes isolated from the small intestine of rats. 2. Sepsis was induced by caecal ligation and puncture; control rats were sham operated. Enterocytes were isolated from the jejunum and incubated in a medium containing [3H]phenylalanine. 3. Sixteen hours after caecal ligation and puncture, protein synthesis, measured as incorporation of radioactivity into protein, was increased by 65%, 89% and 137% respectively in enterocytes from the tips and mid-portions of the villi and from the crypts. 4. Addition of glutamine to incubated enterocytes stimulated protein synthesis in a dose-dependent manner, and this effect was most pronounced in crypt cells from septic rats. The effect of glutamine on protein synthesis was duplicated by equimolar concentrations of acetoacetate or 3-hydroxybutyrate, both of which may serve as fuel for enterocytes, and was blocked by the glutaminase inhibitor 6-diazo-5-oxo-L-norleucine. 5. The results suggest that sepsis stimulates protein synthesis in enterocytes and that glutamine regulates protein synthesis in the same cells, probably by energy provision.
Sujet(s)
Glutamine/physiologie , Jéjunum/métabolisme , Biosynthèse des protéines , Sepsie/métabolisme , Animaux , Épithélium/métabolisme , Mâle , Rats , Rat Sprague-DawleyRÉSUMÉ
BACKGROUND/AIM: Although the role of preoperative percutaneous transhepatic biliary drainage in obstructive jaundice has been the subject of controversy in many other countries, in Japan, almost all surgeons agree that biliary decompression should be performed prior to the surgical treatment in obstructive jaundice. This study was performed in order to determine the role of preoperative percutaneous transhepatic biliary drainage in obstructive jaundice. PATIENTS AND METHODS: We evaluated 238 patients with preoperative obstructive jaundice, and also studied its pathophysiology in experimental animal models. RESULTS: Both of these studies demonstrated that this procedure should be performed if the value of total bilirubin is more than 5 mg/dl, the ICG Rmax value of the future remnant liver is less than 0.4 mg/kg/min, and the duration of jaundice is more than 3 weeks. Preoperative biliary drainage improves the liver function, so that major operations can be safely performed without major complications. CONCLUSIONS: It therefore seems preferable that patients undergo preoperative biliary decompression to reduce serum total bilirubin to below 5 mg/dl, and to improve hepatic and reticuloendothelial functions and hepatic reserve prior to any major surgical operation.