Compare Complication of Classic versus Patent Hemostasis in Transradial Coronary Angiography

The Design and Feasibility of the: Radial Artery Puncture Hemostasis Evaluation – RAPHE Study, a Prospective, Randomized, Multicenter Clinical Trial

Introduction and Aim

Radial artery approach angiography is the current gold standard for coronary status diagnostics and eventual percutaneous revascularization (PCI). Currently, application of adequate, patent hemostasis based physical torniquets are used for puncture site control, to avoid bleeding, radial artery occlusion and damage (RAO and RAD). The Radial Artery Puncture Hemostasis Evaluation (RAPHE) is a prospective, randomized, multicenter clinical trial designed to investigate new, simplified techniques of radial artery hemostasis utilizing physical compression free methods.

Methods and Results

The RAPHE study has been designed to evaluate the efficacy and safety of two non-compression based radial artery hemostasis methods: a 100% chitosan bioactive hemostatic dressing and a purpose-built radial potassium-ferrate based topical hemostasis disc. These devices will be investigated in a standalone configuration. Control group is a standard pneumatic airbladder-based compression device. A total of 600 patients will be enrolled in a three-way randomization (1:1:1) with two study and one control groups. Safety and efficacy endpoints are RAO, puncture site hematoma formation and RAD respectively, consisting of dissection, (pseudo)aneurism and/or fistula formation, measured post-procedure and at sixty days.

Conclusion

The results from this trial will provide valuable information on new, simplified methods of radial artery hemostasis options and possibly simplify post-puncture management of patients.

Clinical Trial Registration

[www.ClinicalTrials.gov], identifier [NCT04857385].

Patent hemostasis of radial artery: Comparison of two methods

BACKGROUND

Radial artery obstruction is the most common complication of coronary angiography performed via transradial access. Patent hemostasis can significantly reduce the risk of radial artery occlusion. Previous studies utilized sophisticated methods to evaluate radial artery patency. Simplified and easily applicable methods for successful patent hemostasis are currently lacking.

AIM

To determine which method (pulse oximeter vs the traditional radial artery palpation) is better to achieve patent hemostasis.

METHODS

This prospective, single center study included 299 consecutive patients who underwent coronary angiography or percutaneous coronary intervention between November 2017 and July 2019. Patients less than 18 years old, with a history of radial artery disease, or no palpable artery pulse were excluded from the study. Patients were randomly assigned to two groups. In the first group, radial artery flow was assessed by palpation of the artery during hemostasis (traditional method). In the second group, radial artery patency was estimated with the use of a pulse oximeter. Two different compression devices were used for hemostasis (air chamber and pressure valve). The primary study endpoint was the achievement of successful patent hemostasis.

RESULTS

The two groups (pulse oximeter vs artery palpation) had no significant differences in age, sex, body mass index, risk factors, or comorbidities except for supraventricular arrhythmias. The percentage of patients with successful patent hemostasis was significantly higher in the pulse oximeter group (82.2% vs 68.1%, P = 0.005). A lower percentage of patients with spasm was recorded in the pulse oximeter group (9.9% vs 19.0%, P = 0.024). The incidence of local complications, edema, bleeding, hematoma, vagotonia, or pain did not differ between the two groups. In the multivariate analysis, the use of a pulse oximeter (OR: 2.35, 95%CI: 1.34-4.13, P = 0.003) and advanced age (OR: 1.04, 95%CI: 1.01-1.07, P = 0.006), were independently associated with an increased probability of successful patent hemostasis. The type of hemostatic device did not affect patent hemostasis (P = 0.450).

CONCLUSION

Patent hemostasis with the use of pulse oximeter is a simple, efficient, and safe method that is worthy of further investigation. Larger randomized studies are required to consider its clinical implications.

Safe and rapid radial hemostasis achieved using a novel topical hemostatic patch: Results of a first-in-human pilot study using hydrophobically modified polysaccharide-chitosan

BACKGROUND

The transradial approach (TRA) for catheter interventions decreases vascular complications and bleeding versus transfemoral approach. Reducing time to hemostasis and preventing radial artery occlusion (RAO) following TRA are important and incompletely realized aspirations.

OBJECTIVES

This first-in-human study sought to evaluate the efficacy of a novel, topically applied compound (hydrophobically modified polysaccharide-chitosan, hm-P) plus minimal required pneumatic compression, to achieve rapid radial arterial hemostasis in post-TRA procedures compared with de facto standards.

MATERIALS AND METHODS

About 50 adult patients undergoing 6 French diagnostic TRA procedures were prospectively enrolled. At procedure completion, a topical hm-P impregnated patch was placed over the dermotomy and TR Band (TRB) compression was applied to the access site. This patch was used as part of a novel rapid deflation protocol with a primary outcome of time to hemostasis. Photographic and vascular ultrasound evaluation of the radial artery was performed to evaluate the procedural site.

RESULTS

Time to hemostasis was 40.5 min (IQR: 38-50 min) with the majority of patients (n = 39, 78%) not requiring reinflation. Patients with bleeding requiring TRB reinflation were more likely to have low body weight and liver dysfunction, with absence of hypertension and LV dysfunction. The rate of RAO was 0% with predischarge radial artery patency documented in all patients using vascular ultrasound. One superficial hematoma was noted. No late bleeding events or cutaneous reactions were reported in the study follow-up.

CONCLUSIONS

Topical application of hm-P in conjunction with pneumatic compression was safe and resulted in rapid and predictable hemostasis at the arterial puncture site.

The transulnar approach in the patients with ipsilateral radial artery occlusion

BACKGROUND

Transulnar approach (TUA) has been classified as an appropriate surrogate for the transradial approach (TRA), but the safety of TUA in the presence of ipsilateral radial artery occlusion (RAO) is not well studied. In this article, we aimed to assess the feasibility and occurrence of complications of this approach in Iranian individuals with ipsilateral RAO.

METHODS

In this prospective double-center study, a total number of 70 participants from July 2017 to November 2018 with coexisting ipsilateral RAO due to prior RA angiography, severe arterial spasm, prominent vascular anomalies, or arterial harvesting for hemodialysis or graft procedures were enrolled and underwent TUA. Incidence of probable complications including pain, hematoma, arteriovenous fistula (AVF), pseudoaneurysm formation, any adverse events requiring immediate vascular surgery, life-threatening hand ischemia, infection, ulnar nerve palsy, major adverse cardiac events (MACE) including death, myocardial infarction (MI), or stroke plus ulnar artery (UA) obstruction and narrowing was evaluated both before discharge time and one month afterward.

RESULTS

The mean age of the study population was 68.2 ± 12.8 years [men number: 41 (58.5%)]. Our success rate was 98.6% and 37.1% of subjects underwent further coronary intervention. No aforementioned adverse outcomes were reported in any individual except for pain (11.4%) and minor hematoma (grade I) (5.7%) as well as MACE (1.4%). Follow-up assessment revealed asymptomatic UA occlusion (UAO) and severe narrowing in 2.8% and 1.4% of participants, respectively.

CONCLUSION

Our outcomes suggested that due to high safety and low complication rates, TUA could be tried safely in patients with concurrent ipsilateral RAO. Other appropriate cohort studies are required for assessing the incidence of TUA complications.

Manual Radial Artery Compression After Transradial Coronary Procedures: Is It Safe to Go Bare-Handed?

Although the superiority of manual compression of the radial, mainly due to its selectivity and progressive grading, had been hypothesized from the early days of the transradial use, data on efficacy and safety of this method are only scarce. This review tries to delineate the aspects of manual hemostasis in transradial catheterization. Current data demonstrate that manual compression of the radial artery is a possible (second line) hemostatic option in transradial catheterization with main advantage the shorter hemostasis duration, and major disadvantage the need for larger involvement of post-procedural care team in hemostasis. Manual compression of the radial artery is a possible (second line) hemostatic option with main advantage the shorter hemostasis duration, and major disadvantages the need for larger involvement of post-procedural care team in hemostasis.