Abbreviations

Abbreviations may be used in exam items. Candidates should familiarize themselves with these common abbreviations:

Abbreviation Meaning
a-fib Atrial Fibrillation
ABG Arterial Blood Gas
AHI Apnea Hypopnea Index
ALS Amyotrophic Lateral Sclerosis
APAP Auto Positive Airway Pressure
ASV Adaptive Servo-Ventilation
AV Atrioventricular
BMI Body Mass Index
bpm Beats Per Minute
BP Blood Pressure
CABG Coronary Artery Bypass Graft
CAP Cyclic Alternating Pattern
CHF Congestive Heart Failure
cm H2O Centimeters of Water Pressure
CNS Central Nervous System
CO2 Carbon Dioxide
COPD Chronic Obstructive Pulmonary Disease
CPAP Continuous positive airway pressure
CPR Cardiopulmonary Resuscitation
CSA Central Sleep Apnea
CVA Cerebral Vascular Accident
ECG Electrocardiogram
EDS Excessive Daytime Sleepiness
EEG Electroencephalogram
EF Ejection Fraction
EMG Electromyogram
EMR Electronic Medical Record
EOG Electro-oculogram
EPAP Expiratory Positive Airway Pressure
ESS Epworth Sleepiness Scale
EtCO2 End-Tidal CO2
FIO2 Fractional Inspired Oxygen
FOSQ Functional Outcomes of Sleep Questionnaire
GERD Gastroesophageal Reflux Disorder
HFF High Frequency Filter
HLA Human Leukocyte antigen
HSAT Home Sleep Apnea Test
HTN Hypertension
Hz Hertz
IPAP Inspiratory Positive Airway Pressure
LFF Low Frequency Filter
LVEF Left Ventricular Ejection Fraction
MAD Mandibular Advancement Device
Mg/dL Milligrams Per Deciliter
MSLT Multiple Sleep Latency Test
mV Millivolt
mV/cm Millivolts Per Centimeter
MWT Maintenance of Wakefulness Test
NOSS Nocturnal Oximetry Testing
NPPV or NIPPV Noninvasive Positive Pressure Ventilation
NREM Non-Rapid Eye Movement
OAHI Obstructive Apnea Hypopnea Index
OAT Oral Appliance Therapy
OCD Obsessive Compulsive Disorder
ODI Oxygen Desaturation Index
OT Over-the-Counter
OSA Obstructive Sleep Apnea
OSAS Obstructive Sleep Apnea Syndrome
O2 Oxygen
PAC Premature Atrial Contraction
PAP Positive Airway Pressure
PCO2 Partial Pressure of Carbon Dioxide
PaCO2 Partial Pressure of CO2 in Arterial Blood
PLM Periodic Limb Movement
PLMD Periodic Limb Movement Disorder
PLMS Periodic Limb Movement Syndrome
POSTS Positive Occipital Sharp Transients of Sleep
PSG Polysomnogram
PTSD Post-traumatic Stress Disorder
PVC Premature Ventricular Contraction
RBD REM Sleep Behavioral Disorder
RDI Respiratory Disturbance Index
REI Respiratory Event Index
REM Rapid Eye Movement
RERA Respiratory Effort-Related Arousal
RIP Respiratory Inductance Plethysmography
RLS Restless Leg Syndrome
SDB Sleep Disordered Breathing
SE Sleep Efficiency
SIDS Sudden Infant Death Syndrome
SOB Shortness of Breath
SOREM Sleep Onset REM
SOREMP Sleep Onset REM Period
SpO2 Oxyhemoglobin Saturation
SSRI Selective Serotonin Reuptake Inhibitor
T&A Tonsillectomy and Adenoidectomy
TcCO2 Transcutaneous Carbon Dioxide
TIB Time in Bed
TMJD Tempero Mandibular Joint Disease
TRT Total Recording Time
TST Total Sleep Time
UARS Upper Airway Resistance Syndrome
UPPP Uvulopalatopharyngoplasty
uV Microvolt
uV/mm Microvolts Per Millimeter
V-fib Ventricular fibrillation
V tach Ventricular Tachycardia
WASO Wake After Sleep Onset