33. Diagnostics of sleep related breathing disorders

How do you diagnose sleep related breathing disorders

• signs + symptoms- at night + day time

• sleep history

• evaluation of comorbidities + risk factors

• standardised screening questionaries

• Sleep studies

What are the night time symptoms

• snoring

• observed apnoea

• poor sleep qualtiy

• night sweating

• enuresis- inability to control urination

What are the daytime symptoms

• sleepiness

• morning headache

• dry mouth

• poor short term memory

• depression

• poor mood

• GERD symptoms

• decreased libido

What are the screening questionaries

STOP- BANG

• Snoring loudly

• T- tired

• Observed apnea during sleep

• P- high bP

• BMI

• Age

• Neck circumference

• Gender- male

What is seen on a laboratory test

• polycythemia

  • increase Hb + HCT

• → hypoxia→ EPO secretion → stimlates BM → increased RBC

• ABG- increase HCO30

What is a polysomnography

• gold standard for diagnosing OSA + other sleep related disorders

• Sleep study can be performed in sleep lab to assess physiolic cariables

What variables are measured in a polysommography

• O2 sat

• nasal airflow

• respiratory effort

  • thoracic/ abdominal movements

• sleep stages

• arousal events

What recordings are done during polysommography

• EEC- electrical brain activity

• EMG- muscle activity

• EOG- electrooculography- eye movement

• ECG