What is the physiological dead space when aerial PCO2 (PaCO2) is 48mmHg, expired PCO2 (PECO2) is 25mmHg and tidal volume of 500ml?
Bohr's equation PCO2 x VT = PCO2 x (VT - PDS)25 x 500 = 48 (500 - PDS)12500/48=500 - PDS260 =500-PDSPDS = 240ml
260ml
240ml
220ml
200ml
Respiratory system