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Table 46.1

Investigation in Suspected Non-ST-Segment-Elevation ACS

Needed urgently
  • ECG (repeated every 15 min if not initially diagnostic and chest pain persists)
  • Chest X-ray
  • Creatinine and electrolytes (recheck potassium if significant arrhythmia occurs or after large diuresis)
  • Blood glucose (blood glucose >10 mmol/L should be managed by insulin infusion (Chapter 82)
  • Troponin level (repeat after 3hours if high-sensitivity assay, after 12hours if standard assay)
  • Echocardiography if diagnosis is uncertain, murmur, hypotension or pulmonary oedema

For later analysis