Related Experiment Video
Updated: Sep 7, 2025

Acetylcholine Re-Challenge After Intracoronary Nitroglycerine Administration
Published on: April 4, 2022
Contemporary Management of Refractory Angina
Rebekah Lantz1, Odayme Quesada2, Georgia Mattingly1
1The Lindner Research Center at the Christ Hospital, 2123 Auburn Avenue, Suite 424, Cincinnati, OH 45219, USA.
Insights
Refractory angina (RA) causes chest pain from coronary ischemia despite treatment. This review explores new invasive and noninvasive therapies for RA patients with limited options.
Area of Science:
- Cardiology
- Vascular Medicine
- Interventional Cardiology
Background:
- Refractory angina (RA) is persistent chest pain due to coronary ischemia.
- Patients have advanced coronary artery disease (CAD) unresponsive to revascularization.
- Optimal medical therapy improves prognosis but quality of life remains impaired.
Purpose of the Study:
- To review novel invasive and noninvasive therapies for refractory angina.
- To highlight emerging treatment options for patients with limited choices.
Main Methods:
- Literature review of current and emerging RA treatments.
- Analysis of invasive and noninvasive therapeutic strategies.
- Synthesis of data on novel investigational therapies.
Main Results:
- Maximal medical therapy and risk factor modification improve long-term prognosis.
- Despite advances, RA patients face significant quality of life impairment.
- Limited treatment options persist for refractory cases.
Conclusions:
- Novel invasive and noninvasive therapies are under investigation for RA.
- These emerging treatments offer potential hope for patients with refractory angina.
- Further research is needed to establish efficacy and safety of new RA therapies.
Abstract:
Refractory angina (RA) is defined as chest pain caused by coronary ischemia in patients on maximal medical therapy and is not amenable to revascularization despite advanced coronary artery disease (CAD). The long-term prognosis has improved with optimal medical therapy including risk factor modification. Still, patients are left with major impairment in quality of life and have high resource utilization with limited treatment options. We review the novel invasive and noninvasive therapies under investigation for RA.
Related Concept Videos
Angina IV: Management
Angina V: Nursing Management
Acute Coronary Syndrome IV: Interprofessional Care
Angina II: Classification
Coronary Artery Disease V: Interprofessional Care
Antianginal Drugs: Calcium Channel Blockers and Ranolazine
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...

