RESPIRATORY

ResponseDyspnoea
Chest pain
syncope

ResponseEcho - Raised RV pressure, Dilated RV
ECG - RV strain (RAD, RBBB, RVH, P-Pulmonale, Tall R waves in V1)

ResponseGroup I - pulmonary arterial hypertension

• Idiopathic (primary), drug use (cocaine/amphetamines)

Group II - Pulmonary venous hypertension

• Systolic/diastolic dysfunction, valvular disease (MS)

Group III - Associated with chronic hypoxaemia (most common)

• COPD, Interstitial lung disease, sleep disordered breathing, alveolar hypoventilation disorders, chronic exposure to high altitudes

Group IV - Chronic thromboembolic disease (PE)
Group V - Miscelaneous (or unclear)

• Haematologic disorders, systemic (Sarcoid/vasculitis), metabolic (Glycogen storage) others - tumour obstruction, CKD on dialysis