Category Investigations
CCC Critical Care compendium 340

Arterial blood gas (ABG)

OVERVIEW ABG = arterial blood gas pH, PaO2 & PaCO2 are all directly measured HCO3-, base excess, SaO2 are derived PaO2 PaO2 = partial pressure (tension) of O2 in arterial blood Oxygen Tension Methods (1) oxygen (Clarke’s) electrode: amount of…
CCC Critical Care compendium 340

Blood Film

Peripheral blood film can provide useful information in diagnosing haematological conditions
CCC Critical Care compendium 340

Brain Natriuretic Peptide (BNP)

Brain Natriuretic Peptide (BNP): released from ventricular myocytes in response to ventricular distension; role in regulation of salt and water excretion and BP management (ADH antagonist)
CCC Critical Care compendium 340

MRI Head

MRI Head: T2 (transverse relaxation time constant) = water/CSF is white. T1 (longitudinal relaxation time constant) = water/CSF is black
CCC Critical Care compendium 340

CK-MB

CK-MB: creatine kinase dimer of M and B chains; found mainly in myocardial cytosol (also in skeletal muscle); one of three isoenzymes of creatine kinase (CK)
  • creatine kinase dimer of M and B chains
  • found mainly in myocardial cytosol (also in skeletal muscle)
  • one of three isoenzymes of creatine kinase (CK)
CCC Critical Care compendium 340

CRP

CRP = C-reactive protein OVERVIEW discovered in 1930 by studying Streptococcus pneumoniae infection -> named for its ability to bind to the somatic C-polysaccharide of such bacterial belongs to the family of pentraxins (calcium dependent ligand-binding plasma proteins) Normal range…
CCC Critical Care compendium 340

CSF analysis

Cerebrospinal fluid (CSF) is a clear, colorless body fluid found in the brain and spinal cord.
CCC Critical Care compendium 340

CT Chest

CT Chest: contrast used to highlight mediastinal structures; entire thorax imaged with no skip areas; slices are 5-10mm thick