Development and validation of a nomogram for predicting the risk of pressure injury in adult patients undergoing abdominal surgery.
Xue Feng, Meng Wang, Ya Zhang and 3 others
PMID 36285073WHAT IT FOUND
In 11,247 adults after abdominal surgery, a new scoring chart predicted pressure injury risk better than the Braden scale.
It used operation time, weight, laparotomy, albumin, and Braden score.
Key findings
01Five factors were independent predictors of pressure injury in the model: operation time, weight, operation type, serum albumin, and Braden score.
02In the validation cohort, the nomogram separated patients who developed pressure injury from those who did not better than the Braden scale, with AUC 0.831 versus 0.567.
03Pressure injury occurred in 873 of 11,247 patients, and 725 had stage I or II injury.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The study was retrospective and single center, so it cannot show that using the nomogram improves patient care. The validation cohort was randomly split from the same dataset, so it was not a separate hospital sample. The model was built with logistic regression, which assumes linear relationships among risk factors. The authors said the results need further prospective validation. Patients were adults after abdominal surgery with ICU postoperative care, so results may not apply to other surgical or medical populations. The Braden scale was tested with a threshold below 18, which may not match local practice.
Declared interests
The authors declared no competing financial interests or personal relationships that could have influenced the work.
The easy way to misread this
Do not read the better prediction as proof that this nomogram prevents pressure injuries. The study tested past records only, and the authors said the results need further prospective validation.