Ca2+

Electrolyte Navigator — Calcium

CDMtools · albumin-corrected value drives the gate · not for direct patient use
Draft · verify locally

Hypocalcaemia

Adjusted Ca ≤2.20 mmol/L — symptom risk first, then cause

↓

Hypercalcaemia

Adjusted Ca >2.60 mmol/L — symptom risk first, then PTH-driven differential

↑

Patient values

Normal adjusted range 2.20–2.60 mmol/L
Symptoms (any → urgent)
Tetany, carpopedal spasm, paraesthesia
Seizures or laryngospasm/bronchospasm
Arrhythmia or prolonged QT on ECG
Cause pointers
Recent thyroid/parathyroid surgery
CKD or low vitamin D risk factors
Low or borderline magnesium

Pathway

Click any step on the pathway above for bedside and lab assessment cues.

Interpretation

Enter calcium and albumin to begin routing.

Patient values

Normal adjusted range 2.20–2.60 mmol/L
Symptoms (any → urgent)
Confusion or reduced consciousness
Significant dehydration
Arrhythmia or ECG changes
Work-up as results come in
On thiazide, lithium, or calcium/vitamin D/vitamin A supplements
Malignancy red flags: weight loss, bone pain, known cancer

Pathway

Click any step on the pathway above for bedside and lab assessment cues.

Interpretation

Enter calcium and albumin to begin routing.

CDMtools — Electrolyte Navigator (pilot). Draft thresholds — verify locally against current guidance before clinical use. Click any underlined term for its definition and source.