A Pilot Study of Role of Vitamin D in Regulation of Bone Homeostasis in Orthopaedic Polytrauma Patients
试验速览
- 阶段
- 1 期
- 状态
- 暂停
- 入组人数
- 60
- 试验地点
- 1
- 主要终点
- 25(OH)-D serum level in relation to other serum markers of bone turnover
研究概览
简要总结
Although vitamin D is known to play a major role in multiple organ functions in healthy adults, including bone homeostasis, its role in the unique population of orthopaedic polytrauma patients has not been well described. The aim of this therapeutic randomized placebo-controlled feasibility study is to determine the effect of vitamin D supplementation initiated on admission on patients' 25(OH)-D level, bone turnover markers, and clinical outcomes in a cohort of adult orthopaedic polytrauma patients. Polytrauma patients with one or more orthopaedic injuries admitted to an urban Level I trauma center will be screened for eligibility based upon strict inclusion and exclusion criteria. Sixty patients meeting the criteria will be consented, enrolled and randomized in a 1:1 ratio to intervention and control (placebo) arm. Baseline 25(OH)-D and bone turnover marker levels will be drawn for all the patients on admission, and the intervention arm will receive a one-time dose of ergocalciferol (Vitamin D2) 400,000 IU shortly after enrollment. The labs will be repeated 7 days after the initial draw or at discharge, whichever occurs first. Patients' daily immobilization status, baseline characteristics and clinical outcomes will be recorded. Statistical methods will be used to assess whether there is a difference in 25(OH)-D and bone turnover markers levels associated with the intervention.
详细描述
Sixty polytrauma patients presenting to Jacobi Medical Center will be screened for eligibility according to strict inclusion and exclusion criteria by study personnel on admission. Medical history, physical examination, and laboratory findings will be collected and assessed to ensure that patients meet the inclusion and exclusion criteria. Eligible subjects will be enrolled after obtaining informed consent from either the subject or health care proxy if the subject is not able to participate in the decision-making process secondary to his injuries or mental status. As this dose of vitamin D has not been previously studied in pregnant subjects, female subjects will be counseled on potential pregnancy risks and will undergo urine pregnancy testing prior to administration of the investigational agent/placebo. Female patients testing positive for pregnancy will be removed from the study. Upon enrollment, study personnel will assign subjects a study ID and record this information in a password-protected data collection document.
All enrolled subjects will have blood draws by phlebotomy or nursing staff for the above-mentioned bone turnover markers once consent is obtained. This will include specimen collection and processing for the following serum levels in both study arms: 25(OH)-D, PTH, collagen type I C-telopeptide, calcium, phosphorus, osteocalcin, and alkaline phosphatase. This initial specimen collection will occur in the interval between 0 and 72 hours of hospital admission.
Collected specimen will be assigned unique identifiers corresponding to patients' study IDs and delivered to core labs at Jacobi Medical Center. From there, the specimen will be sent to an outside testing facility (Northwell Laboratories, Lake Success, NY), where specimen processing will occur. Normal laboratory values will be established by the outside testing facility according to CLIA standards.
The study personnel will liaise with the JMC Main or Satellite Pharmacy to alert them regarding newly enrolled study subjects. The pharmacist will then assign patients according to randomization algorithm in a 1:1 ratio to intervention and control arms, with 30 patients in each group by the end of the study accrual. The pharmacist will then prepare and transport the investigational agent or placebo to the subject's location for administration by nursing staff.
The intervention cohort will receive 400,000IU liquid ergocalciferol (50cc of 8000IU/cc Calcidol solution) via oral, NG tube, or gastrostomy route.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Males and females age 18-65 years
- •One or more orthopaedic injuries on admission
- •Admission injury severity score (ISS)≥16
- •Anticipated stay in hospital of more than 7 days
排除标准
- •Pregnancy (if patient becomes pregnant during the study, she will be removed from the study)
- •End stage kidney disease
- •Patients on furosemide, thiazide, or corticosteroid therapy
- •Patients with chronic liver disease
- •Patients with recent history of vitamin D supplementation more than 5000 IU/day
- •Patients actively undergoing chemo- or immunotherapy
- •Patients with hematologic and solid malignancies
- •Patients receiving treatment for osteoporosis
- •Patients with "nothing per mouth" status secondary to any preceding procedures involving their GI system (e.g. patients with colectomy performed on this admission secondary to gunshot wound to abdomen)
研究组 & 干预措施
Vitamin D control
The control cohort will receive 50cc of propylene glycol as placebo via oral, nasogastric tube, or gastrostomy route on hospital admission.
干预措施: Propylene Glycol (Drug)
Vitamin D intervention cohort
The intervention cohort will receive a one-time 400,000 IU liquid ergocalciferol (50cc of Ergocalciferol 8000 IU/ML Oral Liquid [DRISDOL]) via oral, nasogastric tube, or gastrostomy route on hospital admission.
干预措施: Ergocalciferol 8000 IU/ML Oral Liquid [DRISDOL] (Drug)
结局指标
主要结局
25(OH)-D serum level in relation to other serum markers of bone turnover
时间窗: 1 week
Serum Vitamin D Level, Serum Parathyroid Hormone Level, Serum C-terminal Telopeptide Level, Serum Osteocalcin Level
次要结局
- Hospital length of stay(1 week)
- In-hospital morbidity and mortality(1 week)