PDF Version                                                                         Download

Best Practice                                                                        Download

Instructions to Install Best Practice Template

  1. Download the RTF file above – DO NOT OPEN THE FILE

  2. In Best Practice go to “Word Processor” -> Templates -> Import Templates

  3. Save Name as #ERSA Lung Function and Sleep Study Referral

Medical Director                                                                   Download

Instructions to install Medical Director Template

  1. Download the RTF file above – DO NOT OPEN THE FILE

  2. In Medical Director go to Tools -> Letter Writer -> File -> Modify Template ->Template Name -> Import -> “Find downloaded file” -> Import

  3. Save Name as #ERSA Lung Function and Sleep Study Referral

Doctor and Patient
Referral Guide

Download our guide on which test to order                          Download

Sleep Studies
OSA50 Questionnaire

The OSA50 questionnaire was developed by a group of Australian sleep medicine researchers who aimed to create a brief, four-item OSA screening tool for use in general practice. They established that the four items that best predicted a diagnosis of severe OSA (ie AHI ≥30 events/hour) were:

  1. obesity (by waist circumference)

  2. snoring

  3.  witnessed apneas

  4. age ≥50 years.

Weightings from results of logistic regression analyses were used to create a simple screening tool with a maximum score of 10 points. An OSA50 score ≥5 points was found in a validation sample to have 94% sensitivity, with 31% specificity for identifying moderate-to-severe OSA.
 

Table 1. OSA50 questionnaire                                                                    If yes, score

Obesity/Waist circumference* (>102 cm for males or >88 cm for females)         3

Snoring - Has your snoring ever bothered other people?                                    3

Apnoeas - Has anyone noticed that you stop breathing during your sleep?        2

50 - Are you aged 50 years or over?                                                                    2

                                                                                                        Total score…… / 10 points

*Waist measurement to be measured at the level of the umbilicus (males 102 cm = size 40 [inches] and females 88 cm = size 16)

Ref: Chai-Coetzer CL, Antic NA, Rowland LS, et al. A simplified model of screening questionnaire and home monitoring for obstructive sleep apnoea in primary care. Thorax 2011;66(3):213–19. doi: 10.1136/thx.2010.152801.