Normal Quiz #5

PAO2 Varies directly with FiO2 and barometric pressure (PB)

PAO2 = FiO2 x (PB - 47 mmHg) – (1.25 x PaCO2 mmHg) is the formula for PAO2

P(A – a)O2 = PAO2 - PaO2 is the A-a gradient formula.

CaO2= (Hb x 1.34 x SaO2) + (0.003 x PaO2) is for arterial oxygen content.

CvO2= (Hb x 1.34 x SvO2) + (0.003 x PvO2) is for venous oxygen content.

C(a-v)O2 = CaO2 - CvO2 is for arterial-venous oxygen difference.

VO2 = QT x C(a-v)O2 x 10 is for finding VO2 which is O2 consumption.

The RQ (respiratory quotient) is 0.67-1.3 which = CO2 production/O2 consumption

Which is the normal for C(a-v)O2 difference?

What is the normal CaO2- arterial oxygen content?

What is the normal CvO2- venous oxygen content?

The a/A ratio is greater than 0.74

Normal PAO2 is 100 mmHg.

A-a gradient greater than 300mmHg means what?

A-a gradient of 66-300mmHg means?

Normal A-a gradient is 5-10 on 21% and 25-65 on 100%.

Normal for C(a-v)O2 arterial-venous oxygen difference is?

What is the normal for VO2 which is O2 consumption?

What is the normal for VCO2 which is CO2 production?

What is the normal P/F ratio is?

P/F ratio less than 300 is ALI and less than 200 is ARDS.

Mild ARDS is 200-300, Moderate ARDS 100-200, Severe ARDS less than 100

Normal Oxygen Index (OI) is less than 10.

The normal for QS/QT (Shunt) is 3-5%...10-20% tolerable....20-30% life threatening

Venous oxygen saturation (SvO2) normal is 70-75%.

Partial pressure of oxygen in mixed venous blood (PvO2) normal is 40 mmHg.

The formula for VD/VT = (PaCO2-PeCO2)/PacO2

What is the normal for VD/VT ratio?

VD(anatomic) is 1mL/lb of ideal body weight (IBW).

VD(mechanical) is 10mL/inch of corrugated tubing.

Laryngoscope blade sizes: Adult?

Laryngoscope blade sizes:Pediatric?

Laryngoscope blade sizes: Term Infant?

Laryngoscope blade sizes: Pre-Term Infant

Endotracheal Tube Sizes: Pre-term Neonate

Endotracheal Tube Sizes: Full term Neonate

Endotracheal Tube Sizes:Adult Male

Endotracheal Tube Sizes:Adult Female

Endotracheal Tube Sizes: Pediatric

The neonate tube insertion depth can be found via: WEIGHT IN KG+6(NRP)

Adult ETT size can be found (wt in kg/10) approx size

Greater than 25 cm on ETT tube means right mainstem intubation

Ett placement on XRAY is 2cm or 1 inch above carina -or- at the aortic knob/notch

Nasal intubation tube depth is 26-29 at the nares.

Insertion depth for Pediatric pt is ETT size x 3

What is ORAL tube insertion depth-MALE?

What is ORAL tube insertion depth-FEMALE?

According to kettering, clinical practice is 2-6 cm above carina for ett tube

Normal cuff pressures should be less than 20mmHg or less than 25cmH2O

Cuff pressures greater than 25mmHg?

Cuff pressures greater than 30mmHg?

Cuff pressures greater than 35mmHg?