Table 4.
Indications for Parathyroid Surgery During Monitoring
| Measurement | 2013 |
|---|---|
| Serum calcium (>upper limit of normal) | >1 mg/dL (>0.25 mmol/L) |
| Skeletal | A. T-score <−2.5 at lumbar spine, total hip, femoral neck, or distal 1/3 radius; or a significant reduction in BMDa |
| B. Vertebral fracture by x-ray, CT, MRI, or VFA | |
| Renal | A. CrCl < 60 cc/min |
| B. Clinical development of a kidney stone or by imaging (x-ray, ultrasound, or CT) |
Abbreviations: MRI, magnetic resonance imaging; CrCl, creatinine clearance.
a
A significant change is defined by a reduction that is greater than the least significant change as defined by the International Society for Clinical Densitometry (11).