A New Prediction Mode for Predicting the Risk of Pressure Injury in Patients Undergoing Liver Transplantation

Study Overview
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Brief Summary
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Pediatric population is at a high-risk of pressure injury (PI). Patients undergoing liver transplantation are more prone to PIs compared with other types of surgery. However, there is a lack of sensitive and specific assessment tools for the risk of PI in patients undergoing liver transplantation. How to accurately predict the incidence of PI in patients undergoing liver transplantation is needs to be urgently eliminated. The study is conducted in the Renji Hospital, School of Medicine, Shanghai Jiaotong University which is the largest liver transplantation center in China.

Detailed Description
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Data of 1200 eligible patients undergoing liver transplantation between July 2018 and June 2021 are selected.The sample size was randomly divided into 70% discovery set and 30% validation set according to 7:3. 70% of the discovery dataset are used for the establishment of risk prediction model. The univariate analysis is used to evaluate PI-associated risk factors. In addition, a multivariate logistic regression model is developed using selected variables and P<0.05 in the univariate analysis is used to identify independent risk factors for PIs. The odds ratio for each independent variable is determined with a 95% confidence interval. Finally, a nomogram of predictive model is generated on the basis of the results of multivariate analysis.Discrimination capability, calibration degree, and clinical value will be used to verify the efficacy of the prediction model. This study develops and validates a prediction model for predicting the risk of PI in patients undergoing liver transplantation. Using this prediction model, we will develop decision-support systems to prevent PI in the future.

Official Title
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Establishment of Risk Prediction Model for Pressure Injury in Patients Undergoing Liver Transplantation and Development of Prediction Tool

Conditions
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Liver Transplantation

Intervention / Treatment
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* Other: Exposures


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: undergoing liver transplantation surgery (i.e., living-donor liver transplantation and deceased donor liver transplantation) patients undergoing the first surgery during their hospitalization Exclusion Criteria: a history of PI before undergoing surgery patients with skin disease that could affect observation of skin and the outcome patients who died during surgery
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Group with PIs<br>stage 1pressure injury: non-blanchable erythema of intact skin; stage 2 pressure injury: partial-thickness skin loss with exposed dermis; stage 3 pressure injury: full-thickness skin loss; stage 4 pressure injury: full-thickness skin and tissue loss; unstageable pressure injury: obscured full-thickness skin and tissue loss; deep tissue pressure injury: persistent non-blanchable deep red, maroon or purple discoloration | Other: Exposures<br>* This study is an observational study.Exposure factors is patients with pressure injury.<br>|
| Group without PIs<br>Skin in good condition | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| According to The National Pressure Ulcer Advisory Panel (NPUAP) defined the definition and stage of Pressure Injury to Judge whether pressure injury occurs on skin under pressure. | Definition:A pressure injury is localized damage to the skin and underlying soft tissue usually over a bony prominence or related to a medical or other device. The injury can present as intact skin or an open ulcer and may be painful. The injury occurs as a result of intense and/or prolonged pressure or pressure in combination with shear. The tolerance of soft tissue for pressure and shear may also be affected by microclimate, nutrition, perfusion, co-morbidities and condition of the soft tissue. NPUAP Pressure Injury Stages:stage 1pressure injury: non-blanchable erythema of intact skin; stage 2 pressure injury: partial-thickness skin loss with exposed dermis; stage 3 pressure injury: full-thickness skin loss; stage 4 pressure injury: full-thickness skin and tissue loss; unstageable pressure injury: obscured full-thickness skin and tissue loss; deep tissue pressure injury: persistent non-blanchable deep red, maroon or purple discoloration | Within 6 hours after operation | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Pressure injury, Liver transplantation, Predictive mode