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Cardiology Anaesthesia / Critical Care Standard physiological index — used widely in exercise physiology and cardiology

Rate-Pressure Product (RPP)

Estimates myocardial oxygen demand as the product of heart rate and systolic blood pressure. Used to assess cardiovascular workload during exercise testing or perioperative monitoring.

Used in: Acute Coronary Syndrome & Chest Pain

Score interpretation

Low Myocardial Workload ≥ 0

RPP < 10,000: Low myocardial oxygen demand. Resting or minimal exertion state.

→ Acceptable haemodynamic state. Monitor during exercise testing for ischaemic threshold.

Moderate Workload ≥ 10000

RPP 10,000–20,000: Moderate myocardial oxygen demand. Typical sub-maximal exercise range.

→ In patients with CAD, watch for angina or ECG changes. Angina threshold typically occurs at RPP ~20,000.

High Myocardial Workload ≥ 20000

RPP > 20,000: High myocardial oxygen demand. Above anginal threshold for most CAD patients.

→ Monitor for angina, ST changes, arrhythmia. Stop exercise testing if symptoms develop. Ceiling for exercise stress test = 85% maximal predicted HR.

Interpretation bands for the Rate-Pressure Product. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.