• 10/ 10 000

• D-dimer sensitive bu tnot specific

• Wells score

  • active malignancy (last 6tmo)

  • Immobilistation

  • major surgery in last 3mo

  • localised tenderness of deep venous system

  • dilateral non varicose collateral veins

  • whole leg swelling

  • calf swelling >3cm compared to other side

  • pitting oedema in leg

  • previously documented DVT

  • alternative at least as like -2

• DVT vs. Superficial ven thrombosis

  • painful, red, firm lump in lower leg

  • DVT suspected if:

    • superficial thrombosis in upper medial third of thigh

    • swelling lower leg more than would be expected with SVT alone

    • SVT extending

    • diagnosis uncertian

    • risk factor for DVT

  • superficial femoral vein = deep vein

  • when svt wihtin 3cm of sapheno-femoral vein an increased risk of dvt

Pulmonary embolis

• symptoms

  • dyspnoea (73%)

  • cough (37%)

    -pleurtic pain (66%)

• signs

  • tachypnoea (70%)

  • lung crep (51%)

  • tachycardia (30%)