This LO is massive, and covers essentially an entire textbook. For this reason we will return to it frequently.
BT_SQ 1.6 Describe the methods of measurement applicable to anaesthesia, including clinical utility, complications and sources of error in particular:
· SI units
· Measurement of volumes, flows, and pressures, including transducers.
· Measurement of blood pressure
· Measurement of cardiac output
· Measurement of temperature
· Gas analysis, including capnography
· Methods used to measure respiratory function, including:
– Forced expiratory volume
– Peak expiratory flow rate
– Vital capacity
– Flow-volume loops
– Functional residual capacity and residual volume
TRUE/FALSE A pulse oximeter radiating 2 wavelengths of light can only differentiate 2 different forms of Hb.
TRUE/FALSE Oxygenated haemoglobin absorbs light at a wavelength of 660nm.
TRUE/FALSE The y axis on the plethysmograph is an estimate of arterial calibre and thus sympathetic tone.
TRUE/FALSE Methaemoglobin is strongly absorbed at 660 and 940nm
TRUE/FALSE An adult pulse oximeter cannot accurately read oxygen saturations when foetal haemoglobin is present.