Learning Curve Analysis for Distal Transradial Coronary Access

150 consecutive coronary procedures attempted via distal transradial access (dTRA) were analyzed to map the operator's learning curve. The single-center retrospective study by Feixiang Li, covering procedures from April to August 2025, found an overall success rate of 87.3%. Proficiency was achieved after approximately 75 cases, with procedural efficiency measures stabilizing around 100 cases.

Use Cases

• Modeling procedural learning curves based on success rates across case intervals.
• Identifying patient-related risk factors for procedural failure based on clinical markers like BNP and SBP levels.
• Evaluating the impact of technical factors, such as the anterior-wall puncture technique, on procedural success.
• Benchmarking operator performance and efficiency metrics like puncture attempts and procedure time.

Strengths

• Dataset includes 150 consecutive procedures, providing a complete case series for analysis.
• Study quantifies specific risk factors, noting a 1.9% decrease in odds of success per 100 pg/mL increase in BNP.
• Analysis delineates a two-phase learning curve with clear case-number thresholds (75 and 100 cases).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data is from a single center and a single operator, which may limit generalizability.
• Row count for the underlying data table is unknown, which may limit suitability assessment.

Provenance

Source

Feixiang Li via figshare

Collection Method

Single-center retrospective observational study.

Time Range

Procedures performed between April 23, 2025, and August 23, 2025.

Freshness

Last updated 2026-05-12 15:20:54; freshness should be verified.