RPSGT Quality Assurance & Improvement 4 — Questions and Answers
Question 1: Under AASM standards, how often should a sleep lab's quality improvement program formally review its outcome data?
- Daily
- Monthly
- At least quarterly (Correct answer)
- Annually only
Correct answer: At least quarterly
AASM accreditation requires that quality data be reviewed at least quarterly by the QA committee to ensure timely identification and response to problems.
Question 2: A lab adds a new HSAT device to its fleet. What QA step is MOST important before using the device on patients?
- Inform the referring physicians of the new device
- Perform equipment validation testing against a known standard or concurrent PSG (Correct answer)
- Update the lab's patient consent forms
- Register the device with the state health department
Correct answer: Perform equipment validation testing against a known standard or concurrent PSG
Validation testing confirms that the new device performs comparably to accepted standards, ensuring clinical validity before it is used for diagnostic purposes.
Question 3: Which corrective action is MOST appropriate when QA audits reveal that technologists are inconsistently applying AASM arousal scoring rules?
- Retire the current scoring manual
- Conduct targeted scoring calibration sessions using consensus-scored training records (Correct answer)
- Switch to automated scoring software exclusively
- Remove scoring responsibility from technologists
Correct answer: Conduct targeted scoring calibration sessions using consensus-scored training records
Calibration sessions with consensus-scored records directly address inconsistency by aligning technologist interpretation with the established standard.
Question 4: A sleep lab is preparing for AASM re-accreditation. Which document is MOST critical to demonstrate an ongoing QA program?
- Original equipment purchase orders
- QA meeting minutes and corrective action logs from the past accreditation cycle (Correct answer)
- Technologist licensure certificates
- Patient intake forms
Correct answer: QA meeting minutes and corrective action logs from the past accreditation cycle
QA meeting minutes and corrective action logs provide documented evidence that the lab has been continuously monitoring quality and responding to identified issues.
Question 5: What is the primary purpose of conducting a 'sentinel event' review in a sleep lab?
- To comply with state licensing renewal requirements
- To perform an in-depth analysis of a serious adverse event and prevent recurrence (Correct answer)
- To satisfy insurance auditors requesting clinical documentation
- To evaluate technologist performance for annual reviews
Correct answer: To perform an in-depth analysis of a serious adverse event and prevent recurrence
Sentinel event review is a root-cause analysis process focused on understanding system failures that led to a serious event and implementing safeguards to prevent it from happening again.
Question 6: Which statistical concept helps distinguish between 'common cause' and 'special cause' variation in a sleep lab's PSG quality metrics?
- Mean absolute deviation
- Statistical process control (SPC) charts (Correct answer)
- Chi-square testing
- Linear regression analysis
Correct answer: Statistical process control (SPC) charts
SPC control charts use statistically derived control limits to identify whether variation in a metric is random (common cause) or due to a specific identifiable factor (special cause).
Question 7: A lab finds that studies ordered by one particular referring practice have a significantly higher rate of incomplete data. What is the BEST QA response?
- Stop accepting referrals from that practice
- Share deidentified data with the practice and collaborate on pre-study patient education improvements (Correct answer)
- Score incomplete studies using surrogate channels only
- Flag the studies for secondary physician review without addressing the root cause
Correct answer: Share deidentified data with the practice and collaborate on pre-study patient education improvements
Collaborating with the referring practice on patient preparation addresses the upstream root cause and improves quality while preserving the referral relationship.
RPSGT Quality Assurance & Improvement 4
Under AASM standards, how often should a sleep lab's quality improvement program formally review its outcome data?