Unit
- Adverse event (AE): any untoward medical occurrence in a patient administered a pharmaceutical product, which does not necessarily have a causal relationship with the treatment. This includes any unfavorable sign, symptom, or disease temporally associated with the product, whether or not considered related.
- Serious adverse event (SAE): an AE that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, or requires intervention to prevent permanent impairment.
- Patient safety: the discipline focused on preventing and reducing risks, errors, and harm to patients during healthcare delivery. Reporting adverse events is a cornerstone of patient safety because it enables learning from incidents and system improvements.
- Near miss: an event that did not reach the patient or did not cause harm but had the potential to do so. Reporting near misses provides proactive insight into system vulnerabilities before harm occurs.
- Harm vs. hazard: harm is the actual injury or damage to a patient; a hazard is a condition or situation that increases the probability of harm. Effective reporting distinguishes between the two to target corrective actions appropriately.
- Underreporting: a persistent problem where only a fraction of adverse events are formally reported, often due to fear of blame, lack of awareness, or complex reporting systems. Underreporting undermines safety data integrity and patient protection.
- Reporting hierarchy: events are reported to internal quality departments, regulatory agencies, and sometimes to product manufacturers, depending on the type and severity. Each level has specific timelines and formats.
- Just culture: a framework that balances accountability with learning, encouraging reporting by distinguishing between human error, at-risk behavior, and reckless behavior. A just culture promotes transparency and continuous improvement.
- Causality assessment: the process of evaluating the likelihood that a suspect product caused an adverse event. Standard scales like the WHO UMC system or Naranjo algorithm help classify events as certain, probable, possible, unlikely, or unassessable. Consistent use of these tools supports reliable safety data analysis across reporting systems.
- Expedited reporting: regulatory timelines for serious and unexpected adverse events typically require submission within 7 or 15 days depending on outcome and novelty. Non-serious events follow periodic aggregate reporting. Understanding these deadlines ensures compliance and timely risk communication to protect patient safety.
- Safety data sources: adverse event reports come from clinical trials, spontaneous post-marketing reports, literature, registries, and social media. Integrating data from multiple sources strengthens signal detection and provides a comprehensive view of a product's risk profile throughout its lifecycle.
Scope of Practice
Role: Patient Safety Officer in a Hospital Setting
Within scope:
- Training staff on adverse event definitions and reporting criteria
- Collecting and reviewing incident reports from clinical departments
- Conducting initial triage to determine event severity and reportable status
- Maintaining a confidential reporting system accessible to all personnel
- Providing feedback to reporters on actions taken from their reports
Outside scope:
- Determining final causality or liability for an adverse event
- Disciplining staff involved in an event without a separate investigation
- Releasing patient-identifiable information without authorization
- Submitting reports to regulatory agencies without legal review
- Making decisions about product recalls or market withdrawals
Quick Revision
- An adverse event is any untoward medical occurrence, regardless of causal relationship.
- Serious adverse events require expedited reporting due to life-threatening or disabling outcomes.
- Patient safety relies on a culture that encourages reporting of all incidents, including near misses.
- Underreporting remains a major barrier; just culture frameworks help increase reporting rates.