Waheeb John Shammas, BS, MBA, RA, BA

James T. Torey , PA-C, PA;

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

Predicting Iliac Vein Compression With Computed Tomography Angiography and Venography: Correlation With Intravascular Ultrasound

We assess the safety and efficacy of arteriotomy closure with the intravascular FemoSeal vascular closure device compared with manual compression in patients undergoing diagnostic cardiac catheterization via the common femoral artery.

We assess the safety and...

06/27/2018

Journal of Invasive Cardiology

Original Contribution

11/25/2018

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

Detecting Venous Reflux Using a Sixty-Degree Reverse Trendelenburg (RT-60) Position in Symptomatic Patients With Chronic Venous Disease

Istvan Z. Kovach , RA;

Bassel Bou Dargham , MD, BS;

Rayan Jo Rachwan , MD;

Andrew N. Shammas , BS , OMS, MD;

Srikanth R. Kasula , MD;

Ghassan E. Daher , MD;

Allyson R. Winter , DO;

Waleed Omar , BS;

Aman Manazir , RA;

We evaluated the role of computed tomography angiography and venography in diagnosing common iliac vein compression when compared to IVUS.

We evaluated the role of...

11/25/2018

Journal of Invasive Cardiology

Original Contribution

07/15/2016

William Hauber , MS, RT(R), CNMT;

Melissa J. Green , RCS;

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

Julie Dokas , RDMS, RVT;

Mary F. Knowles , RVT;

Treatment of Totally Occluded Popliteal Artery With the Auryon Laser Via Pedal Access in a Patient With Chronic Limb-Threatening Ischemia

This study examines the predictability of identifying venous reflux using a reverse Trendelenburg 60° when compared with the standing position in the great and small saphenous veins.

This study examines the...

07/15/2016

Journal of Invasive Cardiology

Case Report

12/06/2020

Are We Appropriately Treating Infrapopliteal Arterial Disease? The Need for Precision Imaging With Intravascular Ultrasound

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

The Auryon laser7,8 has a 355 nm wavelength with shorter pulse width (10-25 ns), which means a high laser power that is effective in ablating severe calcium. The longer wavelength allows for a higher absorption of the laser photons by the...

The Auryon laser7,8 has a 355 nm...

12/06/2020

Cath Lab Digest

Case Report

12/13/2018

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

Predictors of Distal Embolization in Peripheral Percutaneous Interventions: A Report from a Large Peripheral Vascular Registry

Ehrin J. Armstrong , MD, MSc, FACC;

In a case of severe stenosis of the tibioperoneal trunk treated under angiographic and intravascular ultrasound (IVUS) guidance, angiography underestimated true vessel size and was unable to identify the presence of dissections vs IVUS.

In a case of severe stenosis of...

12/13/2018

Vascular Disease Management

Original Contribution

12/04/2009

The Nature of Dissections in Infrapopliteal Arteries: Insights from Intravascular Ultrasound Imaging

Michael Jerin , PhD;

Eric J. Dippel , MD;

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

ABSTRACT: Background. Distal embolization (DE) commonly occurs during peripheral percutaneous interventions (PPI) of the lower-extremity arterial vessels. In this study we evaluate the predictors of DE in a large cohort of patients undergoing...

ABSTRACT: Background. Distal...

12/04/2009

Journal of Invasive Cardiology

Case Report

04/18/2019

Ehrin J. Armstrong , MD, MSc, FACC;

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

Jetstream Atherectomy in Treating Femoropopliteal In-Stent Restenosis: Meta-Analysis of the JETSTREAM-ISR and JET-ISR Trials

Shammas and colleagues discuss how treatment of infrapopliteal arteries can be challenging due to the presence of medial calcinosis and fibrotic rings.

Shammas and colleagues discuss...

04/18/2019

Vascular Disease Management

Vascular Disease

07/31/2020

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

Identifying and Repairing Dissections Using Intravascular Ultrasound: Are We There Yet?

We present the results of a patient-level meta-analysis of the two currently completed and core-lab adjudicated prospective trials of the Jetstream atherectomy system (Boston Scientific) in femoropopliteal in-stent restenosis (FP-ISR) and...

We present the results of a...

07/31/2020

Journal of Invasive Cardiology

Case Report

08/19/2019

Femoropopliteal Arterial Dissections Post Flex Vessel Prep and Adjunctive Angioplasty: Results of the Flex iDissection Study

Nicolas W. Shammas , MD, MS, FACC, FSCAI, FACP, FSVM;

The authors present a case that illustrates the importance of IVUS in characterizing dissections and brings forward the question of whether IVUS should be used as the primary modality to identify and repair dissections.

The authors present a case that...

08/19/2019

Vascular Disease Management

04/24/2019