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Determinants of survival in patients with calciphylaxis: a multivariate analysis.
Surgery 2009 December
BACKGROUND: Our study aims to assess the factors affecting survival in patients with calciphylaxis.
METHODS: We identified 26 patients with biopsy-proven calciphylaxis treated between 1995 and 2007. Clinical and follow-up data were obtained from medical records. Cox proportional hazards models were used to assess the factors affecting survival.
RESULTS: The study group consisted of 23 women and 3 men with a mean age of 56.4 +/- 12.9 years. All patients had multiple comorbidities/risk factors including coronary artery disease (58%), diabetes mellitus (58%), and peripheral vascular disease (23%). Mean laboratory values were: calcium, 9.0 mg/dL (range, 6.8-11.6); albumin, 2.8 mg/dL; phosphate, 4.5 mg/dL (range, 2.5-7.5); Ca *phosphate, 35.9; and parathyroid hormone, 320.9 pg/mL (range, 4.6-2,419). Parathyroidectomy was performed in 9 of 26 patients (35%). Of our patients, 19% underwent revascularization procedures and 58% underwent debridement. In multivariate analyses, factors associated with poor survival were female gender ( P = .01), increased weight ( P = .01), and need for vascular procedures ( P = .06). Improved survival was associated with operative debridement ( P = .01). Parathyroidectomy alone did not emerge as a determinant of patient survival, although there was a trend to improved survival when debridement and parathyroidectomy were combined ( P = .09).
CONCLUSION: Rather than a single intervention such as parathyroidectomy, a multidisciplinary approach involving early diagnosis, aggressive medical management, operative debridement, and parathyroidectomy may improve survival in calciphylaxis.
METHODS: We identified 26 patients with biopsy-proven calciphylaxis treated between 1995 and 2007. Clinical and follow-up data were obtained from medical records. Cox proportional hazards models were used to assess the factors affecting survival.
RESULTS: The study group consisted of 23 women and 3 men with a mean age of 56.4 +/- 12.9 years. All patients had multiple comorbidities/risk factors including coronary artery disease (58%), diabetes mellitus (58%), and peripheral vascular disease (23%). Mean laboratory values were: calcium, 9.0 mg/dL (range, 6.8-11.6); albumin, 2.8 mg/dL; phosphate, 4.5 mg/dL (range, 2.5-7.5); Ca *phosphate, 35.9; and parathyroid hormone, 320.9 pg/mL (range, 4.6-2,419). Parathyroidectomy was performed in 9 of 26 patients (35%). Of our patients, 19% underwent revascularization procedures and 58% underwent debridement. In multivariate analyses, factors associated with poor survival were female gender ( P = .01), increased weight ( P = .01), and need for vascular procedures ( P = .06). Improved survival was associated with operative debridement ( P = .01). Parathyroidectomy alone did not emerge as a determinant of patient survival, although there was a trend to improved survival when debridement and parathyroidectomy were combined ( P = .09).
CONCLUSION: Rather than a single intervention such as parathyroidectomy, a multidisciplinary approach involving early diagnosis, aggressive medical management, operative debridement, and parathyroidectomy may improve survival in calciphylaxis.
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