Quality Assurance in Anaesthesia

1. Definition

2. Need / Objectives

• To ensure patient safety and reduce anaesthesia-related morbidity and mortality
• To detect and correct variations in practice (errors are seen as system/process failures, not just individual failures)
• To respond to newer drugs, equipment, and monitoring technology that raise the standard expected of practice
• Medico-legal protection and reduction of liability
• Professional accountability and continuous self-examination
• To generate data for research, training, and policy-making
• Increased patient awareness and expectation of safe, transparent care

3. Framework - Donabedian's Structure-Process-Outcome Model

• Structure indicators: availability of trained anaesthesia personnel, properly maintained equipment (anaesthesia machine, monitors, drugs, emergency trolley), infrastructure of OT and recovery area.
• Process indicators: adherence to standard protocols - preoperative assessment, informed consent, checklist use, intraoperative monitoring standards, drug administration technique, documentation.
• Outcome indicators: mortality, morbidity (e.g., awareness under anaesthesia, dental/airway trauma, aspiration, PONV), length of stay, patient satisfaction.

4. Methods Used for Monitoring and Evaluation

A. Standards for basic intraoperative monitoring

B. Documentation and records

• Intraoperative anaesthesia record - documents vitals, drugs, fluids, and events; serves as a QA data source, medico-legal record, and reference for future anaesthetics.
• Anaesthesia Information Management Systems (AIMS)/electronic medical records - automated capture of monitoring data allows aggregation of large datasets for statistical validity and trend analysis (Barash's Clinical Anesthesia, 9e; Miller's Anesthesia, 10e).

C. Checklists and protocols

• Anaesthesia machine checkout procedures before every case (documented in a departmental log as a QA tool).
• WHO Surgical Safety Checklist to standardize preoperative, intraoperative, and postoperative safety steps.

D. Incident reporting and critical event analysis

• Critical Incident Reporting System (CIRS) - voluntary, non-punitive reporting of near-misses and adverse events to identify system failures.
• Root cause analysis (RCA) of major adverse events to find underlying systemic causes rather than blaming an individual.
• ASA Closed Claims Project - retrospective analysis of malpractice claims to identify recurring patterns of injury (e.g., airway, awareness, nerve injury) and drive changes in practice/monitoring standards.

E. Audit and peer review

• Morbidity and mortality (M&M) meetings - regular departmental review of complications and deaths to draw lessons and modify protocols.
• Peer review of anaesthetic conduct and records.
• Clinical audits comparing departmental performance against set standards (structure/process/outcome audits).

F. Quality indicators and national registries

• Anesthesia Quality Institute (AQI) and National Anesthesia Clinical Outcomes Registry (NACOR) collect standardized quality indicators (e.g., unplanned ICU admission, difficult airway events, PONV rates) across institutions for benchmarking.
• Physician Quality Reporting System (PQRS) (US Medicare) - mandates reporting of quality measures such as timing of prophylactic antibiotics and PACU temperature after colorectal surgery, linking reporting to reimbursement.
• Accreditation bodies (e.g., Joint Commission) specify quality improvement requirements for anaesthesia departments.

G. Continuous Quality Improvement (CQI) cycles

• Plan-Do-Study-Act (PDSA) cycle (Shewhart/Deming, adopted by the Institute for Healthcare Improvement) - the most widely used, simple, iterative method: define a goal, implement a small change, study the results, and act to standardize or modify. Continuous cycling prevents "drift" toward poorer performance.
• Six Sigma and statistical process control - more resource-intensive statistical methods to reduce variation, used in some large centres.

H. Patient/surgeon feedback and satisfaction surveys

I. Training, simulation, and credentialing

• Simulation-based training and mock drills for crisis management (e.g., difficult airway, malignant hyperthermia, anaphylaxis).
• Continuing medical education (CME) and periodic recredentialing of anaesthesia personnel.
• Departmental logs of equipment maintenance and biomedical checks as an ongoing quality control tool.

J. Mortality/morbidity classification

5. Summary