Clarifying when delayed venous access becomes reportable to SHOT
This guidance has been drafted following recent queries from reporters asking for clarification about SHOT reportable events relating to poor venous access.
Delayed venous access is a common clinical challenge but becomes haemovigilance-relevant when the delay arises from organisational or workflow factors rather than unavoidable patient-specific anatomy.
Examples of systemic, preventable contributors include:
- Inadequate staffing or skill mix (e.g., lack of staff with advanced cannulation skills during urgent transfusion needs)
- Absence of clear escalation pathways for difficult venous access
- Unavailability of appropriate equipment (e.g., ultrasound, suitable cannulae)
- Poor communication or coordination between teams
- Delayed recognition or communication of transfusion urgency
- Competing clinical priorities affecting timely access
- Inadequate pre-transfusion planning for patients with known difficult access
These situations are reportable to SHOT because they highlight modifiable system weaknesses and offer opportunities for learning.
Situations that are usually not haemovigilance reportable include:
- Anatomically difficult access despite timely attempts by skilled staff
- Patient refusal or inability to cooperate
- Acute physiological factors making access inherently difficult
- Cannulation failure despite appropriate escalation and equipment
These may be documented locally but do not usually meet SHOT reporting criteria unless they intersect with systemic issues.
From a haemovigilance perspective, a delayed venous access event is reportable when:
- The delay causes or contributes to patient harm, or
- The delay creates a significant risk of harm, or
- The delay reveals a preventable system weakness in the transfusion pathway
A practical approach to decision-making is to ask:
- Was the delay avoidable?
- Did it cause or potentially risk patient harm?
- Did it arise from system, process, or organisational factors?
- Does it offer learning that could improve transfusion safety?
If the answer to all four is no, the event may be more appropriately captured as local clinical documentation rather than a haemovigilance report.