terminology

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A

ABG

Arterial Blood Gas

APRV

Airway pressure Release Ventilation

ASV

Adaptive Support Ventilation
Available on Hamilton(TM) ventilators

Asynchrony Index

Total asynchrony events / total breaths * 100

BAL

Broncho-Alveolar Lavage

BMR

Basic metabolic rate

Bic OR HCO3-

Bicarbonate

CMV

Conventional Mechanical Ventilation

CPAP

Continuous Positive Airway Pressure

CXR

Chest X-Ray

Cl-

Chloride

Cycling

Terminating a breath

DO2

Oxygen Delivery
DO2 = CO x SaO2 x Hb + (paO2 x 0.03)

E (Elastance)

Elastance = 1/C = ∆P/∆V

EELV

End-Expiratory Lung Volume

ETT

Endotracheal Tube

F

FEV1

Forced Expiratory Volume in the first second

FiO2

Fraction of Inspired Oxygen

H

HFOV

High Frequency Oscillatory Ventilation

Hb

Hemoglobin

I

IC

Inspiratory Capacity

IPPV

Intermittent Positive Pressure Ventilation

IRV

Inverse Ratio Ventilation

K

L

LV

Left Ventricle

LVOT

Left Ventricular Outflow Tract

MAP

Mean Airway Pressure = Area under the pressure curve

NAGMA

Non-Anion Gap Metabolic Acidosis

Na+

Sodium. Dialy requirement 3-4mmol/kg

OI

Oxygenation Index = (MAPxFiO2)/paO2

P

P-SILI

Patient Induced Self-Inflicted Lung Injury

PC

Pressure Control

PEEPi

Intrinsic PEEP = Auto-PEEP

PRP

Pressure Rate Product = PRP = pressure x respiratory rate

PTP

Pressure Time Product = PTP = Pavg × Ti = Average pressure during inspiration x Inspiratory time

Palv

Alveolar Pressure

Paw

Airway Pressure

Pcw

Trans Chestwall pressure

Ppl

Pleural Pressure

Q

Qp/Qs

Pulmonary to systemic perfusion ratio.
Qp/Qs = (SaO2 - ScvO2) / SpvO2 - SpaO2)

R

Resistance [cmH2O/l/sec]
R=U/I

RM

Recruitment Manouvre

RR

Respiratory Rate

RV

Right Ventricle

Reverse Triggering Index

Total reverse triggering events / total breaths * 100

S/T

Spontaneous / Timed Mode

SIMV

Synchronised Intermittent Mandatory Ventilation

SaO2

Arterial Oxygen Saturation

Shunt

Perfused but not ventilated part of the lung in which V is 0 and P is present. V/Q Ratio is therefore 0.

Stress

Equivalent to Transpulmonary Pressure

T

TPP

Trans-Pulmonary Pressure
TPP=Palv-Ppl

TVe or Vte

Expiratory Tidal Volume

Tau (𝜏)

Time Constant [sec]
𝜏 = C x R

Ti

Inspiratory Time [sec]

V

VAE

Ventilator Associated Event

VC

Volume Control

VILI

Ventilator Induced Lung Injury

VS

Volume Support

W

X

Z

etCO2

End-Tidal CO2

paCO2

Arterial Cardon Dioxide Partial Pressure [mmHg]

ƒ (frequency)

Frequency OR Respiratory Rate

A/C

Assist Control

ALI

Acute Lung Injury

ARDS

Acute Respiratory Distress Syndrome

AXR

Abdominal X-Ray

B

BE

Base Excess

BiPAP

Bilevel Positive Airway Pressure

C