EMMS eSpira™ Forced Manoeuvers Parameters

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FEV Parameters

Name	Units	Description
IC	ml	Inspiratory Capacity, volume inspired during slow inspiration
FVC	ml	Forced Vital Capacity, volume expired during fast expiration
ERV	ml	Expiratory Reserve Volume, FVC-IC
FEV25	ml	Volume expired in first 25 ms of fast expiration
FEV50	ml	Volume expired in first 50 ms of fast expiration
FEV75	ml	Volume expired in first 75 ms of fast expiration
FEV100	ml	Volume expired in first 100 ms of fast expiration
FEV200	ml	Volume expired in first 200 ms of fast expiration
FEV400	ml	Volume expired in first 400 ms of fast expiration
FEVPEF	ml	Volume expired at peak expiratory flow
tI	s	Inspiration time
tE	s	Expiration time
Pef	ml/s	Peak expiratory flow
MMEF	ml/s	Mean Mid Expiratory Flow, average flow between 25% - 75% FVC
FEF75	ml/s	Forced Expiratory Flow at 75 % of FVC (25 % expired)
FEF50	ml/s	Forced Expiratory Flow at 50 % of FVC
FEF25	ml/s	Forced Expiratory Flow at 25 % of FVC (75 % expired)
FEF10	ml/s	Forced Expiratory Flow at 10 % of FVC (90 % expired)
dVPEF	%	% of FVC remaining at PEF
HoldTime	s	Measured breath hold time
pInsp	cmH2O	Pressure difference between start and end of inspiration
pExp	cmH2O	Pressure difference between start and end of expiration
Offset	ml/s	If the auto-detect zero flow level is enabled, this outputs the offset from calibrated flow zero to calculated flow zero. If zuto-zero detect is disabled, then this output is 0.
FEVUser1	ml	FEV at user-defined output point 1.
FEVUser2	ml	FEV at user-defined output point 2.
FEVUser3	ml	FEV at user-defined output point 3.
FEVUser4	ml	FEV at user-defined output point 4.
FEVUser5	ml	FEV at user-defined output point 5.

FRC Parameters

Name	Units	Description
FRC	ml	Functional Residual Capacity
DeltaP	cmH2O	Pressure difference
DeltaV	ml	Volume difference
Pb	mmHg	Barometric Pressure, as set in Control Options
Tol	%	Percent tolerance between accepted breaths
DeadSp	ml	Amount of dead space, as set in manoeuvre options

Quasi Static PressurePressure Volume Parameters

Name	Units	Description
IC	ml	Inspiratory Capacity, volume inspired during slow inspiration
FVC	ml	Forced Vital Capacity, volume expired during fast expiration
FRC	ml	Functional Residual Capacity, as entered in manoeuvre options
ERV	ml	Expiratory reserve volume, FVC - IC
TLC	ml	Total Lung Capacity, FRC + IC
RV	ml	Residual Volume
Pfrc	cmH2O	Pressure at FRC
Cmax	ml/cmH2O	Maximum compliance
P_Cmax	cmH2O	Pressure at max compliance
V_Cmax	ml	Volume at max compliance
Cchord	ml/cmH2O	Chord compliance between 0-10 cmH2O
Cfvc50	ml/cmH2O	Compliance at 50 % VC
C_P0	ml/cmH2O	Compliance at 0 pressure
Pmax	cmH2O	Max pressure
Pmin	cmH2O	Min pressure
tHold	s	Breath hold time

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