Capobianco M L, McDonald D D
Department of Nursing, Charlotte Hungerford Hospital, Torrington, Conn, USA.
Adv Wound Care. 1996 Nov-Dec;9(6):32-6.
This descriptive correlational study explored the predictive validity of the Braden Scale and factors affecting it A Braden score was determined within 4 hours of admission for 50 adult medical/surgical inpatients. Independent skin assessments were made three times a week and at discharge. Fourteen patients (28%) developed pressure ulcers. A Braden score cutoff of 18 or less resulted in a 71% sensitivity, 83% specificity, 63% predictive value of a positive test, and 88% predictive value of a negative test. Three of the four patients incorrectly predicted to be not at risk scored "inadequate" on the nutrition subscale. Two of the four also were underweight. Of the six patients incorrectly predicted at risk for a pressure ulcer, three had been placed on air mattresses and were receiving levothyroxine (Synthroid). This study provides further evidence of the Braden Scale's predictive validity. The results suggest that patients who are underweight or getting inadequate nutrition be considered at increased risk for pressure ulcers.
这项描述性相关性研究探讨了Braden量表的预测效度及其影响因素。对50名成年内科/外科住院患者在入院4小时内确定Braden评分。每周进行三次独立的皮肤评估，并在出院时进行评估。14名患者（28%）发生了压疮。Braden评分临界值为18分及以下时，灵敏度为71%，特异度为83%，阳性预测值为63%，阴性预测值为88%。在营养子量表上，预测无风险但预测错误的4名患者中有3名得分“不足”。这4名患者中有2名体重也偏低。在预测有压疮风险但预测错误的6名患者中，有3名使用了气垫床并正在接受左甲状腺素（优甲乐）治疗。本研究为Braden量表的预测效度提供了进一步的证据。结果表明，体重偏低或营养不足的患者发生压疮的风险增加。
