RPFT Normal values
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each of the black spaces below before clicking
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| Equipment Operation: Calibration Syringe | 3.0 Liters
Range: 2.895-3.105 L (+ - 3.5%)
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| Equipment Operation: ECG 1 Millivolt | 10 mm vertical deflection on the paper
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| Equipment Operation: ECG Paper speed | 25 mm per second
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| Spirometry: Typical value for Vital Capacity (VC) | Typical Value
4800 mL or 4.8 L
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| Spirometry: Tidal Volume (VT) | Typical Value
500 mL or 0.5 L
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| Spirometry: Inspiratory Reserve Volume (IRV) | Typical Value
3100 mL or 3.1 L
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| Spirometry: Expiratory Reserve Volume (ERV) | Typical Value
1200mL or 1.2L
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| Spirometry: Inspiratory Capacity ( IC) | Typical Value
3600 mL or 3.6L
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| Spirometry: Peak Expiratory Flow (PEF) or Peak Expiratory Flowrate (PEFR) | Typical Value
10L/Second or 600L/minute
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| Spirometry: Forced Expiratory Flow 200-1200 (FEF200-1200) | Typical Value
6L/second
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| Spirometry: Forced Expiratory Flow 25-75% (FEF 25- 75%) | Typical Value
4-5 L/second
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| Spirometry: Forced Expiratory Volume 1.0/Forced Vital Capacity Ratio (FEF 1.0/FVC) | Minimum Acceptable Value
70%
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| Spirometry: Maximum Voluntary Ventilation (MVV) | 170 L/minute
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| Spirometry: FEF50% / FIF50% Ratio | 0.8 - 1.2
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| Lung Testing: Functional Residual Capacity (FRC) | Typical Value
2400 mL or 2.4 L
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| Lung Testing: Thoracic Gas Volume ( VTG) | Typical Value
2400 mL or 2.4 L
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| Lung Testing: Residual Volume (RV) | Typical Value
1200mL or 1.2L
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| Lung Testing : Total Lung Capacity (TLC) | Typical Value
6000 mL or 6.0 L
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| Lung Testing: RV/TLC Ratio | Typical Value
20 %
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| Lung Testing: Airway Resistance (Raw) | Typical Value
0.6 - 2.4 cmH2O/ L/ Second
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| Lung Testing: Airway Conductance (Gaw) | Typical Value
0.42 - 1.67 L/second/cmH2O
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| Lung Testing: Coefficient of Retraction (COR) | Typical Value
4 - 8 cmH2O/ L
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| Lung Testing: Maximum Static Recoil Pressure | Typical Value
24.4 - 34.5 cmH2O
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| Lung Testing: Compliance (C) | Typical Value
CL -0.2 L/cmH2O
CT - 0.2L/cmH2O
CLT-0.1 L/cmH2O
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| Lung Testing: Maximum Inspiratory Pressure (MIP) | Typical Value
- 60 cmH2O
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| Lung Testing: Maximum Expiratory Pressure (MEP) | Typical Value
80 - 100 cmH2O
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| Lung Testing: CO Diffusion Capacity (DLCO) | Typical Value
25 mL/CO/minute/mmHg STPD
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| Special Procedures: Alveolar Oxygen Tension (PAO2) | Normal Value varies directly with patients FiO2 & PB.
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| Special Procedures: A-a Gradient ( PAO2 - PaO2) | Normal Values varies directly wit patients FiO2 & PB.
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| Special Procedures: Arterial Oxygen Content (CaO2) | 17 - 20 %
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| Special Procedures: Mixed Venous Oxygen Content ( CVO2) | 12 - 16 %
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| Special Procedures: Arterial- Venous Oxygen Content Difference (C(a-v)O2) | 4 - 5 Vol %
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| Special Procedures: Cardiac Output (QT) | 4 - 8 L/ minute
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| Special Procedures: Shunt Equation (QS/QT) | 3 - 5 %
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| Special Procedures: Hemoglobin ( Hb) | 12-16 g/100 mL
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| Special Procedures: Hematocrit (Hct) | 36 - 48 %
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| Special Procedures: Deadspace to Tidal Volume Ratio (VD / VT) | 20 - 40 %
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| Arterial Blood Gases: PaCO2 | 40 torr
Range:
35 - 45 torr
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| Arterial Blood Gases: PaO2 | 97 torr
Range:
80 - 100 torr
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| Arterial Blood Gases: pH | 7.40
Range:
7.35 - 7.45
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| Arterial Blood Gases: SaO2 | 98 %
Range:
95 - 100 %
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| Arterial Blood Gases: HCO3 | 24 mEq/ L
Range:
22 - 26 mEq/ L
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| Arterial Blood Gases: BE | 0
Range:
-2 to +2
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| Arterial Blood Gases: COHb | 0 - 2 %
5 - 10 % in patients who smoke
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| Arterial Blood Gases: P50 | 27 torr
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| Arterial Blood Gases: SPO2 | 93 - 97 %
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| Arterial Blood Gases: ETCO2 | 3 - 5 %
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| Arterial Blood Gases: PETCO2 | 30 torr
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| Exercise Testing: Power ( Watts) | 1 W = 6.12 kpm/minute
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| Exercise Testing: METs | 1 MET = 3.5 mL O2/ minute/ kg (at rest)
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| Exercise Testing: Borg Scale | Range 1 - 20
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| Exercise Testing: Modified Borg Scale | Range 1 - 10
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| Calculations: Minute Ventilation (VE) | 5 - 10 L/ minute
( at rest)
100 - 200 L/ minute ( during exercise)
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| Calculations: Frequency of Breathing or Respiratory Rate (f) | 8 - 12 breaths/ minute
(at rest)
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| Calculations: Tidal Volume ( VT ) | 5 mL /kg Body Weight
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| Calculations: Oxygen Consumption or Oxygen Uptake ( VO2) | 0.25 L/minute
(at rest)
Up to 4 L minute
( during exercise)
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| Calculations: Carbon Dioxide Production (VCO2) | 0.2 L/minute
(at rest)
Up to 4 L minute
( during exercise)
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| Calculations: Respiratory Exchange Ratio ( RER ) | 0.85 ( at rest )
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| Calculations: Ventilatory Equivalent for Oxygen ( VE/VO2 ) | 20 - 30 L/L of VO2
( at rest and at low to moderate work loads)
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| Calculations: Ventilatory Equivalent for CO2 ( VE/ VCO2 ) | 25 -35 L/L of CO2
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| Calculations: O2 Pulse | 2.5 - 4.0 mL O2/ beat
(at rest)
10 - 15 mL O2/ beat
(during exercise)
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| Calculations: Alveolar - Arterial Oxygen Tension ( PAO2 - PaO2 ) Alveolar - Arterial Oxygen Gradient ( P(A - a)O2 ) | 10 - 20 torr
(at rest or while breathing room air)
Less than 100 torr on 100 % O2
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| Hemodynamic Measurements: Mean Arterial Pressure ( MAP ) | 93 mm Hg
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| Hemodynamic Measurements: Right Arterial Pressure or Central Venous Pressure ( CVP ) | 2 - 6 mm Hg
4 - 12 cm H2O
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| Hemodynamic Measurements: Pulmonary Artery Pressure ( PAP ) | 25/8 mm Hg
14 mm Hg (mean)
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| Hemodynamic Measurements: Pulmonary Capillary Wedge Pressure ( PCWP ) | 8 mmHg
Range :
4 - 12 mm Hg
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| Hemodynamic Measurements: Cardiac Output QT | 4 - 8 L/minute
Depends on body size
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| Hemodynamic Measurements: Cardiac Index ( CI ) | 2.5 - 4.0 Liters /minute /m2
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| Hemodynamic Measurements: Systemic Vascular Resistance ( SVR ) | < 20 mmHg/ L/minute
or
1600 Dynes/ second/ cm5
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| Hemodynamic Measurements: Pulmonary Vascular Resistance ( PVR ) | < 2.5 mm Hg/ L/minute
or
200 Dynes/second/cm5
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| Quality Assurance: Back Extrapolation | < 5% or 150 mL
( Whichever is greater)
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