type 1 type 2 - am.aace.comam2016.aace.com/presentations/friday/f51/nps_pas_petak.pdf · type 1...
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TYPE 1 TYPE 2
Intuitive Analytic
Fast Deliberate
Experiential Rational
Pattern Recognition Careful Analysis
Matching Against Illness Scripts Consider Wider differential
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Hypercalcemia: Background
Hypercalcemia: Differential PTH Primary Hyperparathyroidism – majority in outpatients Tertiary hyperparathyroidism Familial hypocalciuric hypercalcemia (FHH)
PTHrP Solid tumors malignant: lung, head/neck, esophagus, prostate, breast, lymphoma Solid tumors benign: uterine myoma, pheochromocytoma Leukemia or multiple myeloma
1,25 vitamin D Lymphoma Granulomatous disease: sarcoid, granulomatous myositis, histiocyte disordres
(Langerhans) Inflammatory – Crohn’s, Wegeners, SLE, foreign bodies, beryliosis Infections – TB, fungal disease CYP24A1 mutations
Excessive bone resorption: immobilization, hyperthyroidism Excessive calcium intake – milk alkalai syndrome Vitamin D intoxication: D2, D3, analogs Drugs: HCTZ, lithium, high dose vitamin A Adrenal insufficiency
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Bilezikian JP et al JCEM 2014;99:3561
• Calcium 1 mg/dl above upper limit of normal
at lumbar spine, total hip, femoral neck or
• Vertebral fracture by VFA, radiograph, CT, or MRI
• Creatinine clearance <60 mL/min
• 24 hour urine calcium >400 mg/day
• Nephrolithiasis or nephrocalcinosis by radiograph, CT or ultrasound
Bilezikian JP et al JCEM 2014;99:3561
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Measure PTH
Suppressed
Measure 1,25 OH Vit D, PTHrP, SPEP,
UPEP
Normal or high 1,25 vitamin OH D
Evaluate for 1,25 OH mediated causes
Elevated PTHrP
Evaluate for malignancy, myeloma
Elevated SPEP/UPEP
Myeloma
Normal or Elevated
24 hr urine Ca, Na, Cr, calcium clearance
Clearance <0.01
Genetic test CaSR mutation (FHH)
Clearance >0.01
Primary Hyperparathyroidism
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Measure PTH
Suppressed
Measure 1,25 OH Vit D, PTHrP, SPEP,
UPEP
Normal or high 1,25 vitamin OH D
Evaluate for 1,25 OH mediated causes
Elevated PTHrP
Evaluate for malignancy, myeloma
Elevated SPEP/UPEP
Myeloma
Normal or Elevated
24 hr urine Ca, Na, Cr, calcium clearance
Clearance <0.01
Genetic test CaSR mutation (FHH)
Clearance >0.01
Primary Hyperparathyroidism
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Measure PTH
Suppressed
Measure 1,25 OH Vit D, PTHrP, SPEP,
UPEP
Normal or high 1,25 vitamin OH D
Evaluate for 1,25 OH mediated causes
Elevated PTHrP
Evaluate for malignancy, myeloma
Elevated SPEP/UPEP
Myeloma
Normal or Elevated
24 hr urine Ca, Na, Cr, calcium clearance
Clearance <0.01
Genetic test CaSR mutation (FHH)
Clearance >0.01
Primary Hyperparathyroidism
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Jacobs, TP et al JCEM 2014;99:708-712
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Brandi ML et al. J Clin Endocrinol Metab. 2016;doi: 10.1210/jc.2015-3907
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Bilezikian JP et al. J Clin Endocrinol Metab. 2016;doi: 10.1210/jc.2015-3910
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Bilezikian JP et al. J Clin Endocrinol Metab. 2016;doi: 10.1210/jc.2015-3910
Bilezikian JP et al. J Clin Endocrinol Metab. 2016;doi: 10.1210/jc.2015-3910
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Bilezikian JP et al. J Clin Endocrinol Metab. 2016;doi: 10.1210/jc.2015-3910
• Enhances calcium absorption, stimulates bone remodeling
• Overdosing detected early by urine calcium elevations
• Active metabolites
• Calcitriol (1,25 vitamin D3) half life 4-6 hours, peak levels 3-6 hours
• 0.25-0.5 mcg twice daily typically up to total of 2 mcg daily
• Increases calcium levels within 1-3 days
• Alfacalcidol (1α-hydroxyvitamin D3) (not in USA)
• About 2 mcg/day
• Onset 1-3 days
• Offset 5-7 days (longer half life than calcitriol)
Bilezikian JP et al. J Clin Endocrinol Metab. 2016;doi: 10.1210/jc.2015-3910
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• Vitamin D3 (or D2) in addition to active metabolites
• Longer half-life 2-3 weeks (recovery from overdose can take weeks)
• Especially useful if some parathyroid function (25 to 1,25 conver
Bilezikian JP et al. J Clin Endocrinol Metab. 2016;doi: 10.1210/jc.2015-3910
Bilezikian JP et al. J Clin Endocrinol Metab. 2016;doi: 10.1210/jc.2015-3910
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“How often do you see a patient with a previous DXA report interpretation that is incorrect?”
Lewiecki, EM, et al. J Clin Densitom, 9:388-392, 2006
30
25
20
15
10
5
0
Perc
en
tage
of
Re
sp
on
ders
> 1/day > 1/week 1/week 1/month <1/month never
6%
22%
17%
27% 25%
4%
WHO Definition of Postmenopausal Osteoporosis Based on T-score Classification
Post-menopausal women and older men (>50)
Lumbar spine, total hip, femoral neck and one-third radius
World Health Organization. Technical Report Series 843; WHO, Geneva.1994.
Kanis JA et al. J Bone Miner Res. 1994;9:1137.
T-score (SD)
Normal Equal to -1.0 or higher
Low Bone Mass (Osteopenia) Between -1.0 and -2.5
Osteoporosis Equal to -2.5 or lower
Severe Osteoporosis Equal to -2.5 or lower with fracture
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