Category Investigations
ICE -Ian’s clinical emergencies 340

ICE008: ABG Puzzler

A femoral arterial blood gas sample is obtained from a 41 year old man...obtained when the barometric pressure was 272mmHg and the PiO2 47mmHg
ICE -Ian’s clinical emergencies 340

ICE 007: Abdominal pain investigations

A 57 year old man presents to the ED with 18 hours of severe upper abdominal pain, fever, nausea and vomiting. He looks jaundiced, his HR is 120bpm, BP 110/60, RR 22 and his temperature is 37.8oC. He is tender and guarded in his right upper quadrant on abdominal palpation.
CCC Critical Care compendium 340

Hyponatraemia CCC

Exercise-associated Hyponatremia HYPOnatremia Interpretation Seizures, hyponatremia and ADH Cause of HYPOnatraemia Definition: Serum sodium <130mEq/l Cause: Excess of Water relative to Sodium Affects: 1% of hospital population Hypovolemic (Na deficit in xs of water deficit) (test urine sodium) RENAL (urinary…
CCC Critical Care compendium 340

Hypernatraemia CCC

Water loss in excess of salt deficit. Hypernatremia is usually due to insufficient water (primarily in patients who either do not experience thirst normally, or cannot act on it). Hypernatraemia occurs less commonly associated with excess salt
CCC Critical Care compendium 340

Abnormal LFTs Post Vascular Surgery

CAUSES pre-existing liver disease (+/- exacerbation) drug induced (paracetamol, statins, amiodarone, antibiotics, NSAIDs, beta-blockers, ranitidine, volatiles) ischaemic (post clamping above hepatic artery, thrombosis, embolic, hypotension) surgical injury nutrition (TPN, EN) acalculous cholecystitis transfusion related hepatitis ASSESSMENT History pre-operative liver function…
CCC Critical Care compendium 340

SIADH

Syndrome Of Inappropriate ADH secretion (SIADH) is hyponatraemia due to an increase in concentration of ADH inappropriate to the current osmotic or volume status. The differential diagnosis includes ADH analogues
CCC Critical Care compendium 340

Hypokalaemia

Hypokalaemia: the most common electrolyte abnormality in hospitalised patients; mostly caused by drugs and GI disease
CCC Critical Care compendium 340

Hypercalcaemia

Ca2+ exists in the extracellular plasma two states: (1) free ionized state and (2) bound to other molecules (mostly albumin, rest – beta-globulins, phosphate, citrate) ionized Ca2+ concentration is inversely related to pH -> an increase in pH results in a decrease in ionized Ca2+
CCC Critical Care compendium 340

Non-invasive Blood Pressure

non-invasive blood pressure measurement involves the application of a pressure cuff and can be performed manually (listening for Korotkoff sounds as the pressure is released