1. 1. Amir Y, Lohrmann C, Halfens RJ, Schols JM. Pressure ulcers in four Indonesian hospitals: prevalence, patient characteristics, ulcer characteristics, prevention and treatment. Int Wound J. 2017;14(1):184-93. [DOI:10.1111/iwj.12580] [PMID]

2. 2. Mohammadi N, Seyedalshohadaei M, Ghasemi Nezhad sT, Haghani H. Relationship between pressure ulcer, oxygenation and hemodynamic status in mechanically ventilated patients in intensive care units. Tehran Tehran University of Medical Sciences; 2013.

3. 3. Hartmann CW, Shwartz M, Zhao S, Palmer JA, Berlowitz DR. Longitudinal Pressure Ulcer Rates After Adoption of Culture Change in Veterans Health Administration Nursing Homes. J Am Geriatr Soc. 2016;64(1):151-5. [DOI:10.1111/jgs.13879] [PMID] [PMCID]

4. 4. Miller N, Frankenfield D, Lehman E, Maguire M, Schirm V. Predicting Pressure Ulcer Development in Clinical Practice: Evaluation of Braden Scale Scores and Nutrition Parameters. J Wound Ostomy Continence Nurs. 2016;43(2):133-9. [DOI:10.1097/WON.0000000000000184] [PMID]

5. 5. Azimian J, Dehghan Nayeri N, Pourkhaleghi E, Ansari M. Transdermal Wound Oxygen Therapy on Pressure Ulcer Healing: A Single-Blind Multi-Center Randomized Controlled Trial. Iran Red Crescent Med J. 2015;17(11):e20211. [DOI:10.5812/ircmj.20211] [PMID] [PMCID]

6. 6. Peterson MJ. Pressure ulcer prevention research. Florida, USA: University of Florida; 2009.

7. 7. Ghanee R, Gavami H. Bed sore in ICU. J Nurs Midwifery Urmia Univ Med Sci. 2010;8(2):0-.

8. 8. Shokati Ahmadabad M, Rafiei H, Alipoor Heydari M, Bokharaei M, Amiri M. Incidence of pressure ulcer in patients who were admitted to open heart cardiac surgery intensive care unit. International Journal of Epidemiologic Research, 2016; 3(1): 12-18.

9. 9. Afkar A, Mahboubi M, Mehrabian F, Farmanbar R, Ghahramani F, Kazem Nezhad E, et al. Predictive factors of ICU bedsores using Braden scale. J Kermanshah Univ Med Sci. 2014;18(4):220-5.

10. 10. Hause A. Wireless Pressure Ulcer Prevention Device: Worcester Polytechnic Institute; 2012.

11. 11. Grouni E, Tsironi M, Prezerakos P, Panoutsopoulos GI, Rojas Gil AP, Alikari V, et al. Correlation of presence of endogenous causative or aggravating factors as to the occurrence of pressure ulcers in patients of intensive care units. Periop Nurs Q Sci Online Offic J Gorna. 2014;3(3 September-December 2014):127-33.

12. 12. Garcia-Fernandez FP, Agreda JJ, Verdu J, Pancorbo-Hidalgo PL. A new theoretical model for the development of pressure ulcers and other dependence-related lesions. J Nurs Scholarsh. 2014;46(1):28-38. [DOI:10.1111/jnu.12051] [PMID]

13. 13. Xie H, Peel NM, Hirdes JP, Poss JW, Gray LC. Validation of the interRAI Pressure Ulcer Risk Scale in Acute Care Hospitals. J Am Geriatr Soc. 2016;64(6):1324-8. [DOI:10.1111/jgs.14131] [PMID]

14. 14. Saifollahi ZAB, Fariba%A Borhani, Fariba%A Ilkhani, Mahnaz%A Jumbarsang, Sara. Correlation between Nurses\' Knowledge and Quality of Nursing Care for Prevention of Pressure Ulcers in Intensive Care Units. Hayat. 2016;22(1):90-101.

15. 15. Byrne J, Nichols P, Sroczynski M, Stelmaski L, Stetzer M, Line C, et al. Prophylactic Sacral Dressing for Pressure Ulcer Prevention in High-Risk Patients. Am J Crit Care. 2016;25(3):228-34. [DOI:10.4037/ajcc2016979] [PMID]

16. 16. Arenbergerova M, Engels P, Gkalpakiotis S, Arenberger P. Effect of topical haemoglobin on venous leg ulcer healing. EWMA J. 2013;13(2):25-30.

17. 17. Apostolopoulou E, Tselebis A, Terzis K, Kamarinou E, Lambropoulos I, Kalliakmanis A. Pressure ulcer incidence and risk factors in ventilated intensive care patients. Health Sci J. 2014;8(3):333-42.

18. 18. O\'Brien DD, Shanks AM, Talsma A, Brenner PS, Ramachandran SK. Intraoperative risk factors associated with postoperative pressure ulcers in critically ill patients: a retrospective observational study. Crit Care Med. 2014;42(1):40-7. [DOI:10.1097/CCM.0b013e318298a849] [PMID]

19. 19. Lu CX, Chen HL, Shen WQ, Feng LP. A new nomogram score for predicting surgery-related pressure ulcers in cardiovascular surgical patients. Int Wound J. 2017;14(1):226-32. [DOI:10.1111/iwj.12593] [PMID]

20. 20. Feuchtinger J, Halfens RJ, Dassen T. Pressure ulcer risk factors in cardiac surgery: a review of the research literature. Heart Lung. 2005;34(6):375-85. [DOI:10.1016/j.hrtlng.2005.04.004] [PMID]

21. 21. Alizadeh Ghavidel A, Bashavard S, Bakhshandeh Abkenar H, Payghambari MM. Incidence rate of pressure sores after cardiac surgery during hospitalization and its relevant factors. Razi J Med Sci. 2012;19(102):18-29.

22. 22. Senmar M, Azimian J, Rafiei H, Habibollahpour M, Yousefi F. The incidence of pressure ulcer in old patients undergoing open heart surgery and the relevant factors. J Prev Epidemiol. 2017;2(2):9.

23. 23. Soozani A, Khosravi A, Pourheydari M, Montazeri AS. Using Braden and Waterlow Scales to Predict Pressure Ulcer: A Comparative Study. Knowledge Health 2011;5(4):43-8.

24. 24. Jalali R, Rezaie M. Predicting pressure ulcer risk: comparing the predictive validity of 4 scales. Adv Skin Wound Care. 2005;18 (2):92-7. [DOI:10.1097/00129334-200503000-00013] [PMID]

25. 25. Bly D, Schallom M, Sona C, Klinkenberg D. A Model of Pressure, Oxygenation, and Perfusion Risk Factors for Pressure Ulcers in the Intensive Care Unit. Am J Crit Care. 2016;25(2):156-64. [DOI:10.4037/ajcc2016840] [PMID]

26. 26. Karayurt Ö, Akyol Ö, Kiliçaslan N, Akgün N, Sargin Ü, Kondakçi M, et al. The pressure ulcer incidence in patients on mechanical ventilation and effects of selected risk factors on pressure ulcer development. 2013.

27. 27. Pender LR, Frazier SK. The relationship between dermal pressure ulcers, oxygenation and perfusion in mechanically ventilated patients. Intensive Crit Care Nurs. 2005;21(1):29-38. [DOI:10.1016/j.iccn.2004.07.005] [PMID]

28. 28. Mohammadi N, Ghaseminezhad S, Seyedalshohadaei M, Haghani H, Yekaninezhad M. The role of hemodynamic status and the level of oxygenation in the development of pressure ulcer in mechanically ventilated patients. Iran J Nurs. 2013;25(80):56-64.

29. 29. Suriadi, Sanada H, Sugama J, Kitagawa A, Thigpen B, Kinosita S, et al. Risk factors in the development of pressure ulcers in an intensive care unit in Pontianak, Indonesia. Int Wound J. 2007;4(3):208-15. [DOI:10.1111/j.1742-481X.2007.00315.x] [PMID]