Contact
searchSearch
HMP Global
Clinical Videos

Collateral Clarity: Balloon Occlusion of an Epicardial Right Coronary Artery Branch to Map Left Anterior Descending Artery Perfusion

Dimitris Karelas, MD, MSc
Konstantinos Filippou, MD, MSc
Panagiotis Varelas, MD, MSc
Konstantinos Manousopoulos, MD, PhD
Ioannis Papadopoulos, MD
Ioannis Tsiafoutis, MD, PhD
08/28/2025

Video 1. Left coronary angiography in a left coronary artery RAO 24°/CRAN 3° projection showed an in-stent chronic total occlusion of the mid-left anterior descending artery with no distal opacification. 

Video 2. Complementary left coronary angiography in LAO 4°/CRAN 35° projection confirmed mid-left anterior descending artery in-stent chronic total occlusion with absent antegrade distal flow. 

Video 3. Right coronary angiography in LAO 6°/CRAN 24° projection showed a single epicardial collateral arising from the acute marginal branch and supplying the distal left anterior descending artery.  

Video 4. Right coronary artery-acute marginal epicardial collateral to the left anterior descending artery, RAO 38°/CRAN 13°. 

Video 5. Balloon occlusion of the acute marginal branch demonstrated in LAO 25°/CRAN 6° projection showed complete interruption of epicardial collateral flow without recruitment of additional channels. 

Video 6. Balloon occlusion of the acute marginal branch demonstrated in RAO 28°/CRAN 34°projection showed complete interruption of epicardial collateral flow without recruitment of additional channels. 

Video 7. Post-balloon deflation angiography showed prompt restoration of right coronary artery–acute marginal collateral flow to the distal left anterior descending artery.

© 2025 HMP Global. All Rights Reserved.
Any views and opinions expressed are those of the author(s) and/or participants and do not necessarily reflect the views, policy, or position of the Journal of Invasive Cardiology or HMP Global, their employees, and affiliates. 
 


News

HeartFlow Plaque Analysis
plaque analysis
Heartflow Announces FDA 510(k) Clearance and Launch of Next Generation Heartflow Plaque Analysis Platform
09/22/2025
Heartflow also announced that Heartflow Plaque Analysis will be covered by Cigna across all of its lines of business, including Commercial and Medicare Advantage plans, beginning in October.
Heartflow also announced that Heartflow Plaque Analysis will be covered by Cigna across all of its lines of business, including Commercial and Medicare Advantage plans, beginning in October.
Heartflow also announced that...
09/22/2025
Cath Lab Digest
Cardiogenic Shock
New SCAI Initiative Targets Faster Shock Diagnosis and Care with ‘Door to Lactate Clearance’
09/19/2025
“SCAI Door to Lactate Clearance (SCAI DLC) Cardiogenic Shock Initiative: Definition, Hypothesis and Call to Action” was unveiled September 19 at the SCAI SHOCK Conference in Tampa, FL, with simultaneous publication in JSCAI.  
“SCAI Door to Lactate Clearance (SCAI DLC) Cardiogenic Shock Initiative: Definition, Hypothesis and Call to Action” was unveiled September 19 at the SCAI SHOCK Conference in Tampa, FL, with simultaneous publication in JSCAI.  
“SCAI Door to Lactate Clearance...
09/19/2025
Cath Lab Digest
Hyperkalemia
AccurKardia Announces Clinical Pilot Study of Its AK+ Guard ECG-based, AI-powered Hyperkalemia Detection Software
09/18/2025
Hyperkalemia, or an excess of serum potassium in the blood, is a common condition affecting patients with chronic kidney disease (CKD), end stage renal disease, and heart failure that can result in dangerous arrhythmias and sudden cardiac...
Hyperkalemia, or an excess of serum potassium in the blood, is a common condition affecting patients with chronic kidney disease (CKD), end stage renal disease, and heart failure that can result in dangerous arrhythmias and sudden cardiac...
Hyperkalemia, or an excess of...
09/18/2025
Cath Lab Digest
Patient Care
Hitting the Right Note: The Healing Power of Music Therapy in the Cardiac ICU
09/18/2025
Music therapy could significantly reduce heart rate, blood pressure and patient–ventilator asynchronies for patients admitted to the cardiac intensive care unit (ICU), according to research being presented at ACC Latin America 2025 taking...
Music therapy could significantly reduce heart rate, blood pressure and patient–ventilator asynchronies for patients admitted to the cardiac intensive care unit (ICU), according to research being presented at ACC Latin America 2025 taking...
Music therapy could...
09/18/2025
Cath Lab Digest
Pulmonary Embolism
Imperative Care Announces Late-Breaking Data Presentation and Peer-Reviewed Publication from Pivotal Trial of Symphony Thrombectomy System in Patients with Acute Pulmonary Embolism
09/18/2025
The Symphony Thrombectomy System is an aspiration catheter system engineered to deliver more efficient and effective clot removal in patients with venous thromboembolism (VTE). Symphony uniquely combines large-bore power with precise deep...
The Symphony Thrombectomy System is an aspiration catheter system engineered to deliver more efficient and effective clot removal in patients with venous thromboembolism (VTE). Symphony uniquely combines large-bore power with precise deep...
The Symphony Thrombectomy System...
09/18/2025
Cath Lab Digest
CVD
Cardiovascular Disease Risk Rises in Mexico, Despite Improved Cholesterol Control
09/18/2025
Despite improved statin use and cholesterol control, cardiovascular disease risk rose in Mexico between 2016 and 2023, according to a study being presented at ACC Latin America 2025 that used region-specific tools to more accurately predict...
Despite improved statin use and cholesterol control, cardiovascular disease risk rose in Mexico between 2016 and 2023, according to a study being presented at ACC Latin America 2025 that used region-specific tools to more accurately predict...
Despite improved statin use and...
09/18/2025
Cath Lab Digest
Thrombectomy
Penumbra's Lightning Bolt 6X with Trax Now Available in 150 cm, Bringing the Power of CAVT to More Distal Anatomy Below the Knee
09/16/2025
“Lightning Bolt 6X with TraX has been highly effective in addressing smaller embolized fragments in the AT,” says Dr. Visharad Patel at Wellstar North Fulton Hospital in Roswell, GA. “We have been impressed with its ability to navigate...
“Lightning Bolt 6X with TraX has been highly effective in addressing smaller embolized fragments in the AT,” says Dr. Visharad Patel at Wellstar North Fulton Hospital in Roswell, GA. “We have been impressed with its ability to navigate...
“Lightning Bolt 6X with TraX has...
09/16/2025
Cath Lab Digest
Heart Failure
ELEVATE-HFpEF: Medtronic Initiates Global Pivotal Study of Cardiac Pacing in New Patient Population
09/16/2025
Participants will either receive a pacemaker programmed with an elevated, personalized pacing rate, or one programmed to provide a non-personalized backup pacing rate if needed.
Participants will either receive a pacemaker programmed with an elevated, personalized pacing rate, or one programmed to provide a non-personalized backup pacing rate if needed.
Participants will either receive...
09/16/2025
Cath Lab Digest
Peripheral IVL
Shockwave Javelin Peripheral Intravascular Lithotripsy Catheter Launched in Europe to Transform Treatment of Difficult-to-Cross Calcified Lesions
09/16/2025
“The Shockwave Javelin Peripheral IVL catheter helps address one of the most persistent technical barriers in complex below the knee (BTK) revascularization – the ‘device-uncrossable’ calcified lesion,” said Dr. Narayanan Thulasidasan
“The Shockwave Javelin Peripheral IVL catheter helps address one of the most persistent technical barriers in complex below the knee (BTK) revascularization – the ‘device-uncrossable’ calcified lesion,” said Dr. Narayanan Thulasidasan
“The Shockwave Javelin...
09/16/2025
Cath Lab Digest
Dr. Annapoorna Kini (left) and her team outside of The Samuel Fineman Cardiac Catheterization Artificial Intelligence Research Lab
AI Research
Mount Sinai Launches Cardiac Catheterization Artificial Intelligence Research Lab
09/16/2025
Annapoorna Kini, MD, will serve as Director of The Samuel Fineman Cardiac Catheterization Artificial Intelligence Research Lab. The new lab will focus on many aspects of interventional cardiology, from procedural to educational.
Annapoorna Kini, MD, will serve as Director of The Samuel Fineman Cardiac Catheterization Artificial Intelligence Research Lab. The new lab will focus on many aspects of interventional cardiology, from procedural to educational.
Annapoorna Kini, MD, will serve...
09/16/2025
Cath Lab Digest

Sovari Figure 1
Clinical Videos
Leadless Pacemaker Placement Through the Subclavian Vein: An Alternative to the Femoral Route
09/26/2025
Video Supplement to "Leadless Pacemaker Placement Through the Subclavian Vein: An Alternative to the Femoral Route" (Clinical Image).
Video Supplement to "Leadless Pacemaker Placement Through the Subclavian Vein: An Alternative to the Femoral Route" (Clinical Image).
Video Supplement to "Leadless...
09/26/2025
Journal of Invasive Cardiology
Clinical Images
Leadless Pacemaker Placement Through the Subclavian Vein: An Alternative to the Femoral Route
09/26/2025
09/26/2025
Journal of Invasive Cardiology
Brief Communication
Aortic Valve Calcification Alone Identifies Transcatheter Aortic Valve Replacement Benefit in Classical Low-Flow, Low-Gradient Aortic Stenosis
09/25/2025
The authors sought to determine if the prognostic relevance of aortic valve calcification differs by low-flow, low-gradient aortic stenosis subtype.
The authors sought to determine if the prognostic relevance of aortic valve calcification differs by low-flow, low-gradient aortic stenosis subtype.
The authors sought to determine...
09/25/2025
Journal of Invasive Cardiology
Offiah Figure
Clinical Videos
A Kissing WATCHMAN Approach to Bilobar Left Atrial Appendage Occlusion
09/24/2025
Video Supplement to "A Kissing WATCHMAN Approach to Bilobar Left Atrial Appendage Occlusion" (Clinical Image).
Video Supplement to "A Kissing WATCHMAN Approach to Bilobar Left Atrial Appendage Occlusion" (Clinical Image).
Video Supplement to "A Kissing...
09/24/2025
Journal of Invasive Cardiology
Clinical Images
A Kissing WATCHMAN Approach to Bilobar Left Atrial Appendage Occlusion
09/24/2025
An 83-year-old man with a history of atrial fibrillation presented with a subdural hematoma. His apixaban was stopped and a pacemaker was implanted.
An 83-year-old man with a history of atrial fibrillation presented with a subdural hematoma. His apixaban was stopped and a pacemaker was implanted.
An 83-year-old man with a...
09/24/2025
Journal of Invasive Cardiology
Casazza headshot
Author Interview
Ocular Radiation Exposure of the Primary Operator Performing Selective Coronary Angiography From a Radial Artery Approach
09/23/2025
Richard Casazza, MAS
Dr Richard Casazza shares background and insights on his article, "Ocular Radiation Exposure of the Primary Operator Performing Selective Coronary Angiography From a Radial Artery Approach."
Dr Richard Casazza shares background and insights on his article, "Ocular Radiation Exposure of the Primary Operator Performing Selective Coronary Angiography From a Radial Artery Approach."
Dr Richard Casazza shares...
09/23/2025
Journal of Invasive Cardiology
HeartFlow Plaque Analysis
plaque analysis
Heartflow Announces FDA 510(k) Clearance and Launch of Next Generation Heartflow Plaque Analysis Platform
09/22/2025
Heartflow also announced that Heartflow Plaque Analysis will be covered by Cigna across all of its lines of business, including Commercial and Medicare Advantage plans, beginning in October.
Heartflow also announced that Heartflow Plaque Analysis will be covered by Cigna across all of its lines of business, including Commercial and Medicare Advantage plans, beginning in October.
Heartflow also announced that...
09/22/2025
Cath Lab Digest
Cardiogenic Shock
New SCAI Initiative Targets Faster Shock Diagnosis and Care with ‘Door to Lactate Clearance’
09/19/2025
“SCAI Door to Lactate Clearance (SCAI DLC) Cardiogenic Shock Initiative: Definition, Hypothesis and Call to Action” was unveiled September 19 at the SCAI SHOCK Conference in Tampa, FL, with simultaneous publication in JSCAI.  
“SCAI Door to Lactate Clearance (SCAI DLC) Cardiogenic Shock Initiative: Definition, Hypothesis and Call to Action” was unveiled September 19 at the SCAI SHOCK Conference in Tampa, FL, with simultaneous publication in JSCAI.  
“SCAI Door to Lactate Clearance...
09/19/2025
Cath Lab Digest
Hyperkalemia
AccurKardia Announces Clinical Pilot Study of Its AK+ Guard ECG-based, AI-powered Hyperkalemia Detection Software
09/18/2025
Hyperkalemia, or an excess of serum potassium in the blood, is a common condition affecting patients with chronic kidney disease (CKD), end stage renal disease, and heart failure that can result in dangerous arrhythmias and sudden cardiac...
Hyperkalemia, or an excess of serum potassium in the blood, is a common condition affecting patients with chronic kidney disease (CKD), end stage renal disease, and heart failure that can result in dangerous arrhythmias and sudden cardiac...
Hyperkalemia, or an excess of...
09/18/2025
Cath Lab Digest
Patient Care
Hitting the Right Note: The Healing Power of Music Therapy in the Cardiac ICU
09/18/2025
Music therapy could significantly reduce heart rate, blood pressure and patient–ventilator asynchronies for patients admitted to the cardiac intensive care unit (ICU), according to research being presented at ACC Latin America 2025 taking...
Music therapy could significantly reduce heart rate, blood pressure and patient–ventilator asynchronies for patients admitted to the cardiac intensive care unit (ICU), according to research being presented at ACC Latin America 2025 taking...
Music therapy could...
09/18/2025
Cath Lab Digest

Specialties

Events

Year Round Education

HMP Global Products

HMP Education Logo
HMP Omnimedia Logo
HMP Europe Logo
© 2025 HMP Global. All Rights Reserved.
Cookie Policy Privacy Policy Term of Use