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Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

1,521 questions in 132 reviews · Hepato-Biliary

current versions
No studies 303 · 19.9%Ungraded 39 · 2.6%Very low 876 · 57.6%Low 216 · 14.2%Moderate 65 · 4.3%High 22 · 1.4%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Intervention NR
Mortality ‐ Initial hepatic artery versus initial portal vein reperfusion · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
RR 1.02 [0.22, 4.84]2 studies · 119 participantsVery low
Intervention NR
Graft survival ‐ Retrograde IVC reperfusion versus simultaneous hepatic artery and portal vein reperfusion · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
HR 0.88 [0.44, 1.74]1 study · 1 participantsVery low
Intervention NR
Mortality ‐ Retrograde IVC reperfusion versus simultaneous hepatic artery and portal vein reperfusion · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
no estimate extracted1 study · 131 participantsVery low
Intervention NR
Patient survival ‐ Initial hepatic artery versus initial portal vein reperfusion · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
HR 1.03 [0.37, 2.86]1 study · 1 participantsVery low
Intervention NR
Patient survival ‐ Simultaneous hepatic artery and portal vein reperfusion versus initial portal vein reperfusion · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
HR 0.45 [0.16, 1.28]1 study · 1 participantsVery low
Intervention NR
Patient survival ‐ Retrograde IVC reperfusion versus simultaneous hepatic artery and portal vein reperfusion · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
HR 1.43 [0.58, 3.53]1 study · 1 participantsVery low
Intervention NR
Graft survival ‐ Initial hepatic artery versus initial portal vein flush · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
HR 1.05 [0.8, 1.37]1 study · 1 participantsVery low
Intervention NR
Graft survival ‐ Additional blood venting through IVC versus no additional blood venting through IVC · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
HR 1.15 [0.87, 1.51]1 study · 1 participantsVery low
Intervention NR
Graft survival ‐ Initial hepatic artery versus initial portal vein reperfusion · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
HR 0.54 [0.15, 1.98]2 studies · 2 participantsVery low
Intervention NR
Graft survival ‐ Simultaneous hepatic artery and portal vein reperfusion versus initial portal vein reperfusion · patients with liver transplantation.
Techniques of flushing and reperfusion for liver transplantation (2012) · Cochrane
HR 01 study · 1 participantsVery low
Hepatic product (HepaticAid) vs diet only (without supplement)
Re‐hospitalisation post liver transplantation [event per patient] · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 22 participantsVery low
Standard casein product (Ensure) vs diet only (without supplement)
Acute rejection [events per patient] · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 24 participantsVery low
Standard casein product (Ensure) vs diet only (without supplement)
New onset of diabetes · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 24 participantsVery low
Standard casein product (Ensure) vs diet only (without supplement)
Length of stay in hospital after liver transplantation · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 24 participantsVery low
Standard casein product (Ensure) vs diet only (without supplement)
Hepatic encephalopathy related hospitalisation · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 20 participantsVery low
Standard casein product (Ensure) vs diet only (without supplement)
Changes in grade of hepatic encephalopathy [grade 0‐4] · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 20 participantsVery low
Nutritional supplement (500ml) and standard diet vs standard diet alone
Mortality during time on waiting list (ITT) · adult patients before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.24 [0.02, 1.37]1 study · 82 participantsVery low
Nutritional supplement (500ml) and standard diet vs standard diet alone
Six months mortality after liver transplantation (ITT) · adult patients before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.37 [0.06, 1.77]1 study · 82 participantsVery low
Nutritional supplement (500ml) and standard diet vs standard diet alone
Mild acute rejection episodes (within 6 months after LTx) · adult patients before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.56 [0.19, 1.61]1 study · 71 participantsVery low
Nutritional supplement (500ml) and standard diet vs standard diet alone
Severe acute rejection episodes (within six months after LTx) · adult patients before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.63 [0.22, 1.79]1 study · 71 participantsVery low
Enteral immunonutrion with Supportan vs enteral nutrition (EN) with Fresubin
Immunological rejection episodes · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 84 participantsVery low
Hepatic product (HepaticAid) vs diet only (without supplement)
Infections [event per patient] · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 22 participantsVery low
Postoperative feeding via nasojejunal tube vs no postoperative parental nutrition (conventional intravenous electrolyte solution)
Days in hospital post liver transplantation · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 31 participantsVery low
Postoperative feeding via nasojejunal tube vs no postoperative parental nutrition (conventional intravenous electrolyte solution)
Re‐hospitalisation [events per patient] · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 31 participantsVery low
Postoperative feeding via nasojejunal tube vs no postoperative parental nutrition (conventional intravenous electrolyte solution)
Infections (overall) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.32 [0.04, 1.86]1 study · 31 participantsVery low
Postoperative feeding via nasojejunal tube vs no postoperative parental nutrition (conventional intravenous electrolyte solution)
Infections (bacterial) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.41 [0.03, 3.15]1 study · 31 participantsVery low
Postoperative feeding via nasojejunal tube vs no postoperative parental nutrition (conventional intravenous electrolyte solution)
Infections (viral) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 31 participantsVery low
Postoperative feeding via nasojejunal tube vs no postoperative parental nutrition (conventional intravenous electrolyte solution)
Intensive care unit length of stay after liver transplantation [hours] · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 31 participantsVery low
Postoperative feeding via nasojejunal tube vs no postoperative parental nutrition (conventional intravenous electrolyte solution)
Time on ventilator [hours until initial extubation] · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 31 participantsVery low
Postoperative enteral nutrition (Osmolite) via nasojejunal tube vs postoperative parenteral nutrition (PN)
Length of hospital stay after liver transplantation [days] · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 24 participantsVery low
Postoperative enteral nutrition (Osmolite) via nasojejunal tube vs postoperative parenteral nutrition (PN)
Days on ventilator · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 24 participantsVery low
Postoperative enteral nutrition (Osmolite) via nasojejunal tube vs postoperative parenteral nutrition (PN)
Mortality · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.7 [0.01, 60.29]1 study · 24 participantsVery low
Hepatic product (HepaticAid) vs diet only (without supplement)
Acute rejection [event per patient] · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 22 participantsVery low
Postoperative enteral nutrition (Osmolite) via nasojejunal tube vs postoperative parenteral nutrition (PN)
Side effects (vomiting, diarrhoea) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.68 [0.04, 11.17]1 study · 24 participantsVery low
Postoperative enteral nutrition (Osmolite) via nasojejunal tube vs postoperative parenteral nutrition (PN)
Infection (overall) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 1.07 [0.12, 8.75]1 study · 24 participantsVery low
Enteral nutrition via nasojejunal tube plus intravenous glutamine‐dipeptide supplementation vs standard parenteral nutrition
Death (during length of initial hospital stay; ITT) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 30 participantsVery low
Enteral nutrition via nasojejunal tube plus intravenous glutamine‐dipeptide supplementation vs standard parenteral nutrition
Infection (ITT) ‐ mycotic infection · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.19 [0.02, 1.31]1 study · 30 participantsVery low
Enteral nutrition via nasojejunal tube plus intravenous glutamine‐dipeptide supplementation vs standard parenteral nutrition
Infection (ITT) ‐ infection (overall) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.35 [0.06, 1.84]1 study · 30 participantsVery low
Enteral nutrition via nasojejunal tube plus intravenous glutamine‐dipeptide supplementation vs standard parenteral nutrition
Acute rejection (ITT) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.21 [0.004, 2.49]1 study · 30 participantsVery low
Enteral nutrition via nasojejunal tube plus intravenous glutamine‐dipeptide supplementation vs standard parenteral nutrition
Length of hospital stay after liver transplantation [days] (ITT) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 30 participantsVery low
Enteral nutrition via nasojejunal tube plus intravenous glutamine‐dipeptide supplementation vs standard parenteral nutrition
Intensive care unit length of stay after liver transplantation [days] (ITT) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 30 participantsVery low
Enteral nutrition via nasojejunal tube plus intravenous glutamine‐dipeptide supplementation vs standard parenteral nutrition
Days on ventilator (ITT) · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 30 participantsVery low
Parenteral nutrition with protein, fat, carbohydrates and branched‐chain amino acids vs 5% dextrose and normal saline
1‐year‐survival · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.61 [0.05, 5.94]1 study · 43 participantsVery low
Hepatic product (HepaticAid) vs diet only (without supplement)
New onset of diabetes · adult patients with malnutrition and encephalopathy before and after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 22 participantsVery low
Parenteral nutrition with protein, fat, carbohydrates and branched‐chain amino acids vs 5% dextrose and normal saline
3‐year‐survival · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.93 [0.23, 3.81]1 study · 43 participantsVery low
Parenteral nutrition with alanyl‐glutamine, protein, fat, carbohydrates and branched‐chain amino acids vs 5% dextrose and normal saline
1‐year‐survival · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.29 [5e-04, 4.03]1 study · 43 participantsVery low
Parenteral nutrition with alanyl‐glutamine, protein, fat, carbohydrates and branched‐chain amino acids vs 5% dextrose and normal saline
3‐year‐survival · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
OR 0.76 [0.18, 3.18]1 study · 43 participantsVery low
Parenteral nutrition plus branched‐chain‐amino‐acid‐enriched formula vs standard isotonic intravenous glucose solution
Length of hospital stay after liver transplantation [days] · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 20 participantsLow
Parenteral nutrition plus branched‐chain‐amino‐acid‐enriched formula vs standard isotonic intravenous glucose solution
Length of stay in intensive care unit after liver transplantation [days] · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 20 participantsLow
Parenteral nutrition plus branched‐chain‐amino‐acid‐enriched formula vs standard isotonic intravenous glucose solution
Days on ventilator · adult patients after liver transplantation.
Nutritional interventions for liver‐transplanted patients (2012) · Cochrane
no estimate extracted1 study · 20 participantsLow