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The Effect of Preoperative Nutritional Intervention for Adult Spinal Deformity Patients
Shin Oe1, Jun Watanabe2, Tatsuya Akai2
1Department of Orthopedic Surgery and Division of Geriatric Musculoskeletal Health, Hamamatsu University School of Medicine, Hamamatsu, Japan.
Study Design:
A prospective nutritional intervention study for adult spinal deformity (ASD) patients.
Objective:
To investigate how a nutritional intervention affects the incidence of postoperative medical complications and the nutritional status.
Summary Of Background Data:
The medical complication rate in ASD surgery is very high, and one risk factor is malnutrition. Nutritional intervention may improve the patient's nutritional status and reduce risk, but this is unexplored regarding ASD surgery.
Methods:
Malnourished patients (i.e., a prognostic nutritional index [PNI] score of <50) scheduled for surgery after November 2018 (Group I) received nutritional intervention consisting of nutritional guidance and supplements on the surgery day. The medical complication rates between Group I and Group NI (malnourished patients who underwent surgery between January 2014 and October 2018; historical controls) were evaluated. The nutritional status courses of Group I and Group NI2 (patients who did not participate in nutritional intervention after November 2018) were assessed.
Results:
Group I had 24 patients in (mean age, 70 yr), and Group NI had 69 patients (mean age, 68 yr). The mean intervention duration was 41 days. The preoperative PNI score did not differ between the groups, but there was a significant difference in medical complications incidences (Group I: 25%; Group NI: 53.6%; P = 0.015). The nutritional status significantly deteriorated in Group I (PNI: 47-45; P = 0.011) and Group NI2 (61 patients; mean age, 68 yr; PNI: 52-48; P = 0.000), but the PNI changes were significantly smaller in Group I (ΔPNI: Group I: -1.9, Group NI 2: -3.5; P = 0.027).
Conclusion:
Nutritional intervention with guidance and supplements reduced postoperative medical complications in malnourished patients. The nutritional status of ASD patients requiring surgery also naturally worsened, suggesting that ASD may contribute to malnutrition. Nutritional intervention may reduce the nutritional status deterioration.Level of Evidence: 3.
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