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Important associations

Sepsis $\ensuremath{\Leftrightarrow}$ Pulmonary Embolism
Perforated esophagus $\ensuremath{\Leftrightarrow}$ Myocardial Infarct
Septic Shock $\ensuremath{\Leftrightarrow}$ Blood Loss
Post renal angioplasty, back pain, instability $\ensuremath{\Leftrightarrow}$ renal artery disruption
Femoral hernia $\ensuremath{\Leftrightarrow}$ bowel obstruction, carcinoma of groin
Post laparoscopy, pain or unwell $\ensuremath{\Leftrightarrow}$ bleeding or leak
DVT $\ensuremath{\Leftrightarrow}$ Compartment syndrome $\ensuremath{\Leftrightarrow}$ ischaemic limb
Rectal bleed $\ensuremath{\Leftrightarrow}$ Rectal cancer
Anaemia $\ensuremath{\Leftrightarrow}$ Caecal cancer
Recent retching and anorexia $\ensuremath{\Leftrightarrow}$ Gastric Cancer
Flank pain $\ensuremath{\Leftrightarrow}$ not bowel source usually, for children, the further away from midline the more likely to be organic
Haemoptysis $\ensuremath{\Leftrightarrow}$ Lung carcinoma / Pulmonary Embolism
Respiratory distress $\ensuremath{\Leftrightarrow}$ post thyroidectomy neck haematoma, laryngeal oedema, anaesthetic agent.
Medication or antibiotics $\ensuremath{\Leftrightarrow}$ Allergy, cross reaction, drug interaction (especially Warfarin interaction), end organ damage (e.g. Flucloxacillin causing hepatocellular damage, jaundice, death) and beware of paediatric dosage.

Adrian P. Ireland