Hypocalcaemia
Sy & Si
MSK - numbness, parasthesia, muscle cramps, convulsions
+ve Chvostek's & Trousseau's signs
Bone - myopathy & bone pain (low vit D)
hCa + low/undetectable PTH = hPTm
Eyes - cataracts (chronic)
Brain - behav disturbances
Brain - behav disturbances
Ix
ECG = Prolonged QT
Causes (NB hypoalbuminaemia)
Low vit D
Disordered vit D metabolismm (eg Renal Failure)
hPTH (congenital, AI, post Thyroid Sx, infiltrations)
PseudohPTH (PTH resistance)
Mg depletion (impaired PTH synthesis/release)
Acute pancreatitis
Neonatal
Massive blood transfusion (citrated blood)
Artefactual ( Blood sample collected into EDTA/citrate)
Causes (NB hypoalbuminaemia)
Low vit D
Disordered vit D metabolismm (eg Renal Failure)
hPTH (congenital, AI, post Thyroid Sx, infiltrations)
PseudohPTH (PTH resistance)
Mg depletion (impaired PTH synthesis/release)
Acute pancreatitis
Neonatal
Massive blood transfusion (citrated blood)
Artefactual ( Blood sample collected into EDTA/citrate)
hCa + low/undetectable PTH = hPTm
hCA+elevated PTH = non-PT causes (except pseudo hPT)
No comments:
Post a Comment