Clinical Evidence Informing the SAPH Value Story
SAPH is designed to support patent hemostasis through a controlled, suction-based mechanism that approximates the arteriotomy to a soft, external seal.
The studies summarized below provide clinical context for SAPH’s design intent, workflow approach, and initial observations related to radial artery patency.
Minor et al., 2021 (J Invasive Cardiol) – Randomized Trial of VasoStat vs TR Band
Finding
VasoStat reduced time to hemostasis by ~54 minutes, required fewer adjustments, and improved patient comfort vs TR Band. No RAO at 30 days.
Relevance
Shows focused, non-circumferential pressure improves workflow and comfort while preserving radial patency.
(Minor RL Jr et al. J Invasive Cardiol. 2021;33(2):E84–E90.)
Maqsood et al., 2023 (Circ Cardiovasc Interv) – Meta-analysis of Hemostasis Band Duration
Finding
Across 10 RCTs (4,911 pts), 2-hour banding best balanced outcomes: shorter durations increased hematomas, longer durations trended toward more RAO.
Relevance
Confirms 2-hour duration as optimal for safety and patency after radial access.
(Maqsood MH et al. Circ Cardiovasc Interv. 2023;16:e012781.)
Avdikos et al., 2017 (Cardiovasc Diagn Ther) – Review of Radial Artery Occlusion
Finding
RAO occurs in 1–10% of radial cases. Risk is linked to sheath size, inadequate anticoagulation, prolonged compression, and lack of patent hemostasis.
Relevance
Defines RAO as the most common complication of radial access and highlights prevention strategies.
(Avdikos G et al. Cardiovasc Diagn Ther. 2017;7:305–316.)
Takamatsu et al., 2023 (Cardiovasc Interv Ther) – Impact of Radial Compression Protocols on RAO and Hemostasis Time
Finding
A frequent, gradual deflation protocol reduced radial artery occlusion from 9.8% to 0.9% and shortened time to hemostasis from ~190 minutes to ~66 minutes, with no increase in clinically relevant bleeding.
Relevance
Highlights that traditional compression approaches rely on fixed stages of inflation and deflation, requiring repeated staff adjustments and prolonged monitoring
(Takamatsu S et al. Cardiovasc Interv Ther. 2023;38:202–209.)
Dobies et al., 2016 (Open Heart) – Registry Analysis of Radial vs Femoral PCI
Finding
Radial access lowered bleeding vs femoral (0.9% vs 2.2%), but no difference when bivalirudin was used. Radial cases had higher radiation.
Relevance
Large registry confirms radial’s bleeding advantage is drug-dependent and highlights radiation trade-offs.
(Dobies DR et al. Open Heart. 2016;3:e000397.)
Riyami et al., 2020 (J Saudi Heart Assoc) – TR Band Deflation Protocols and Time to Removal
Finding
A delayed deflation protocol with more frequent intervals reduced time to band removal (~201 vs. 274 minutes) without increasing bleeding or complications. Staff showed a clear preference for protocols with longer intervals due to lower intensity and workload demands.
Relevance
Frequent monitoring, manual adjustments, and delays in deflation highlight how traditional compression protocols are dependent on ongoing nursing attention during the post-procedure period.
(Al Riyami H et al. J Saudi Heart Assoc. 2020;32:52–56.)