Journal List > J Korean Acad Nurs > v.42(5) > 1002854

Kim and Jeong: Optimal Time Interval for Position Change for ICU Patients using Foam Mattress Against Pressure Ulcer Risk

Abstract

Purpose

This study was done to identify the time interval to pressure ulcer and to determine the optimal time interval for position change depending on pressure ulcer risk in patients using foam mattress in intensive care units.

Methods

The Braden scale score, occurrence of pressure ulcers and position change intervals were assessed with 56 patients admitted to an intensive care unit from April to November, 2011. The time to pressure ulcer occurrence by Braden scale risk group was analyzed with Kaplan-Meier survival analysis and log rank test. Then, the optimal time interval for position change was calculated with ROC curve.

Results

The median time to pressure ulcer occurrence was 5 hours at mild or moderate risk, 3.5 hours at high risk and 3 hours at very high risk on the Braden scale. The optimal time interval for position change was 3 hours at mild and moderate risk, 2 hours at high and very high risk of Braden scale.

Conclusion

When foam mattresses are used a slight extension of the time interval for position change can be considered for the patients with mild or moderate pressure ulcer risk but not for patients with high or very high pressure ulcer risk by Braden scale.

Figures and Tables

Figure 1
Kaplan-Meier survival curve for pressure ulcer occurrence by pressure ulcer risk group.
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Table 1
Characteristics of Study Participants (N=56)
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*Mann Whitney U test; χ2 for trend test; IQR=Interquartile range.

Table 2
Cumulative Survival Function by Pressure Ulcer Risk Group
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SE=Standard error.

Table 3
Median Time to Pressure Ulcer Occurrence by Pressure Ulcer Risk Group
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*log-rank test.

Table 4
Sensitivity and Specificity at a Certain Cut-off Points by Pressure Ulcer Risk Group
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PU=Pressure ulcer; AUC=Area under the ROC curve.

Notes

This article is a condensed form of the first author's master's thesis from Pusan National University.

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