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Original Article
Optimal Time Interval for Position Change for ICU Patients using Foam Mattress Against Pressure Ulcer Risk
Hyean Jeong Kim, In Sook Jeong
Journal of Korean Academy of Nursing 2012;42(5):730-737.
DOI: https://doi.org/10.4040/jkan.2012.42.5.730
Published online: October 31, 2012

1Pusan National University Yangsan Hospital, Yangsan, Republic of Korea.

2College of Nursing, Pusan National University, Yangsan, Republic of Korea.

Address reprint requests to: Jeong, Ihn Sook. College of Nursing, Pusan National University, Beomoe-ri, Mulgeum-eup, Yangsan 626-870, Korea. Tel: +82-51-510-8342, Fax: +82-51-510-8308, jeongis@pusan.ac.kr
• Received: February 14, 2012   • Accepted: September 27, 2012

© 2012 Korean Society of Nursing Science

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  • 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.
  • Keywords: Pressure ulcer; Patient positioning; Risk assessment; Viscoelastic substances
Figure 1
Kaplan-Meier survival curve for pressure ulcer occurrence by pressure ulcer risk group.
jkan-42-730-g001.jpg
Table 1
Characteristics of Study Participants (N=56)
jkan-42-730-i001.jpg

*Mann Whitney U test; †χ2 for trend test; IQR=Interquartile range.

Table 2
Cumulative Survival Function by Pressure Ulcer Risk Group
jkan-42-730-i002.jpg

SE=Standard error.

Table 3
Median Time to Pressure Ulcer Occurrence by Pressure Ulcer Risk Group
jkan-42-730-i003.jpg

*log-rank test.

Table 4
Sensitivity and Specificity at a Certain Cut-off Points by Pressure Ulcer Risk Group
jkan-42-730-i004.jpg

PU=Pressure ulcer; AUC=Area under the ROC curve.

Figure & Data

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        Optimal Time Interval for Position Change for ICU Patients using Foam Mattress Against Pressure Ulcer Risk
        J Korean Acad Nurs. 2012;42(5):730-737.   Published online October 31, 2012
        DOI: https://doi.org/10.4040/jkan.2012.42.5.730
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      Optimal Time Interval for Position Change for ICU Patients using Foam Mattress Against Pressure Ulcer Risk
      Image
      Figure 1 Kaplan-Meier survival curve for pressure ulcer occurrence by pressure ulcer risk group.

      Figure 1

      Optimal Time Interval for Position Change for ICU Patients using Foam Mattress Against Pressure Ulcer Risk

      Characteristics of Study Participants (N=56)

      *Mann Whitney U test; †χ2 for trend test; IQR=Interquartile range.

      Cumulative Survival Function by Pressure Ulcer Risk Group

      SE=Standard error.

      Median Time to Pressure Ulcer Occurrence by Pressure Ulcer Risk Group

      *log-rank test.

      Sensitivity and Specificity at a Certain Cut-off Points by Pressure Ulcer Risk Group

      PU=Pressure ulcer; AUC=Area under the ROC curve.
      Table 1 Characteristics of Study Participants (N=56)

      *Mann Whitney U test; †χ2 for trend test; IQR=Interquartile range.

      Table 2 Cumulative Survival Function by Pressure Ulcer Risk Group

      SE=Standard error.

      Table 3 Median Time to Pressure Ulcer Occurrence by Pressure Ulcer Risk Group

      *log-rank test.

      Table 4 Sensitivity and Specificity at a Certain Cut-off Points by Pressure Ulcer Risk Group

      PU=Pressure ulcer; AUC=Area under the ROC curve.

      Table 1

      Table 2

      Table 3

      Table 4

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