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https://www.readbyqxmd.com/read/29402709/spontaneous-dissection-of-the-left-main-coronary-artery-case-report-and-brief-review
#1
Manivannan Veerasamy, Mark E Jacoby, Ryan D Madder
No abstract text is available yet for this article.
December 23, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29173684/multidisciplinary-management-of-the-post-cardiac-arrest-patient
#2
REVIEW
Ryan D Madder, Joshua C Reynolds
Cardiac arrest afflicts more than 300,000 persons annually in North America alone. Improving outcomes after cardiac arrest requires an integrated and multidisciplinary approach to postresuscitation intensive care and subsequent recovery. This article reviews components of injury within the post-cardiac arrest syndrome, the salient features of brain-oriented intensive care, best practices in neurologic prognostication, and a rational approach to emergency revascularization and hemodynamic support.
February 2018: Cardiology Clinics
https://www.readbyqxmd.com/read/29102573/radiation-exposure-among-scrub-technologists-and-nurse-circulators-during-cardiac-catheterization-the-impact-of-accessory-lead-shields
#3
Ryan D Madder, Andrew LaCombe, Stacie VanOosterhout, Abbey Mulder, Matthew Elmore, Jessica L Parker, Mark E Jacoby, David Wohns
OBJECTIVES: This study was performed to determine if the use of an accessory lead shield is associated with a reduction in radiation exposure among staff members during cardiac catheterization. BACKGROUND: Accessory lead shields that protect physicians from scatter radiation are standard in many catheterization laboratories, yet similar shielding for staff members is not commonplace. METHODS: Real-time radiation exposure data were prospectively collected among nurses and technologists during 764 consecutive catheterizations...
October 25, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28982647/multimodality-intracoronary-imaging-with-near-infrared-spectroscopy-and-intravascular-ultrasound-in-asymptomatic-individuals-with-high-calcium-scores
#4
Ryan D Madder, Stacie VanOosterhout, David Klungle, Abbey Mulder, Matthew Elmore, Jeffrey M Decker, David Langholz, Thomas F Boyden, Jessica Parker, James E Muller
BACKGROUND: This study sought to determine the frequency of large lipid-rich plaques (LRP) in the coronary arteries of individuals with high coronary artery calcium scores (CACS) and to determine whether the CACS correlates with coronary lipid burden. METHODS AND RESULTS: Combined near-infrared spectroscopy and intravascular ultrasound was performed in 57 vessels in 20 asymptomatic individuals (90% on statins) with no prior history of coronary artery disease who had a screening CACS ≥300 Agatston units...
October 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28914558/robotics-in-percutaneous-cardiovascular-interventions
#5
Ali Pourdjabbar, Lawrence Ang, Omid Behnamfar, Mitul P Patel, Ryan R Reeves, Paul T Campbell, Ryan D Madder, Ehtisham Mahmud
The fundamental technique of performing percutaneous cardiovascular (CV) interventions has remained unchanged and requires operators to wear heavy lead aprons to minimize exposure to ionizing radiation. Robotic technology is now being utilized in interventional cardiology partially as a direct result of the increasing appreciation of the long-term occupational hazards of the field. This review was undertaken to report the clinical outcomes of percutaneous robotic coronary and peripheral vascular interventions...
November 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28105993/percutaneous-coronary-intervention-using-a-combination-of-robotics-and-telecommunications-by-an-operator-in-a-separate-physical-location-from-the-patient-an-early-exploration-into-the-feasibility-of-telestenting-the-remote-pci-study
#6
Ryan D Madder, Stacie M VanOosterhout, Mark E Jacoby, J Stewart Collins, Andrew S Borgman, Abbey N Mulder, Matthew A Elmore, Jessica L Campbell, Richard F McNamara, David H Wohns
AIMS: The present study explores the feasibility of telestenting, wherein a physician operator performs stenting on a patient in a separate physical location using a combination of robotics and telecommunications. METHODS AND RESULTS: Patients undergoing robotic stenting were eligible for inclusion. All manipulations of guidewires, balloons, and stents were performed robotically by a physician operator located in an isolated separate room outside the procedure room housing the patient...
January 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28041859/impact-of-robotics-and-a-suspended-lead-suit-on-physician-radiation-exposure-during-percutaneous-coronary-intervention
#7
Ryan D Madder, Stacie VanOosterhout, Abbey Mulder, Matthew Elmore, Jessica Campbell, Andrew Borgman, Jessica Parker, David Wohns
BACKGROUND: Reports of left-sided brain malignancies among interventional cardiologists have heightened concerns regarding physician radiation exposure. This study evaluated the impact of a suspended lead suit and robotic system on physician radiation exposure during percutaneous coronary intervention (PCI). METHODS: Real-time radiation exposure data were prospectively collected from dosimeters worn by operating physicians at the head- and chest-level during consecutive PCI cases...
April 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/27970245/tct-852-impact-of-robotics-and-a-suspended-lead-suit-on-physician-radiation-exposure-during-percutaneous-coronary-intervention
#8
Andrew LaCombe, Andrew O'Brien, Jacob Bundy, Austin Clarey, Edwin Mandieka, Thomas Crane, David Benavides, Matthew Elmore, Abbey Mulder, Stacie VanOosterhout, Andrew Borgman, David Wohns, Ryan Madder
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27970197/tct-808-invasive-characterization-of-atherosclerotic-plaque-in-patients-with-peripheral-arterial-disease-using-near-infrared-spectroscopy-intravascular-ultrasound
#9
Amr Abbas, Sibin Zacharias, James Goldstein, Ryan Madder, Ivan Hanson, Robert Safian
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27743573/optical-coherence-tomography-the-next-ace-in-cto-interventions
#10
EDITORIAL
Ryan D Madder
No abstract text is available yet for this article.
October 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/26957574/invasive-evaluation-of-plaque-morphology-of-symptomatic-superficial-femoral-artery-stenoses-using-combined-near-infrared-spectroscopy-and-intravascular-ultrasound
#11
Sibin K Zacharias, Robert D Safian, Ryan D Madder, Ivan D Hanson, Mark C Pica, James L Smith, James A Goldstein, Amr E Abbas
The purpose of this study is to characterize the plaque morphology of severe stenoses in the superficial femoral artery (SFA) employing combined near-infrared spectroscopy and intravascular ultrasound (NIRS-IVUS). Atherosclerosis is the most common cause of symptomatic peripheral arterial disease. Plaque composition of SFA stenoses has been characterized as primarily fibrous or fibrocalcific by non-invasive and autopsy studies. NIRS has been validated to detect lipid-core plaque (LCP) in the coronary circulation...
August 2016: Vascular Medicine
https://www.readbyqxmd.com/read/26941016/confirmation-of-the-intracoronary-near-infrared-spectroscopy-threshold-of-lipid-rich-plaques-that-underlie-st-segment-elevation-myocardial-infarction
#12
MULTICENTER STUDY
Ryan D Madder, Rishi Puri, James E Muller, Jan Harnek, Matthias Götberg, Stacie VanOosterhout, Margaret Chi, David Wohns, Richard McNamara, Kathy Wolski, Sean Madden, Samuel Sidharta, Jordan Andrews, Stephen J Nicholls, David Erlinge
OBJECTIVE: In a previous exploratory analysis, intracoronary near-infrared spectroscopy (NIRS) found the majority of culprit lesions in ST-segment-elevation myocardial infarction (STEMI) to contain a maximum lipid core burden index in 4 mm (maxLCBI4mm) of >400. This initial study was limited by a small sample size, enrollment at a single center, and post hoc selection of the maxLCBI4mm ≥400 threshold. This study was designed a priori to substantiate the ability of NIRS to discriminate STEMI culprit from nonculprit segments and to confirm the performance of the maxLCBI4mm ≥400 threshold...
May 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/26800770/large-lipid-rich-coronary-plaques-detected-by-near-infrared-spectroscopy-at-non-stented-sites-in-the-target-artery-identify-patients-likely-to-experience-future-major-adverse-cardiovascular-events
#13
Ryan D Madder, Mustafa Husaini, Alan T Davis, Stacie VanOosterhout, Mohsin Khan, David Wohns, Richard F McNamara, Kevin Wolschleger, John Gribar, J Stewart Collins, Mark Jacoby, Jeffrey M Decker, Michael Hendricks, Stephen T Sum, Sean Madden, James H Ware, James E Muller
AIMS: A recent study demonstrated that intracoronary near-infrared spectroscopy (NIRS) findings in non-target vessels are associated with major adverse cardiovascular and cerebrovascular events (MACCE). It is unknown whether NIRS findings at non-stented sites in target vessels are similarly associated with future MACCE. This study evaluated the association between large lipid-rich plaques (LRP) detected by NIRS at non-stented sites in a target artery and subsequent MACCE. METHODS AND RESULTS: This study evaluated 121 consecutive registry patients undergoing NIRS imaging in a target artery...
April 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/26729855/combined-near-infrared-spectroscopy-and-intravascular-ultrasound-imaging-of-pre-existing-coronary-artery-stents-can-near-infrared-spectroscopy-reliably-detect-neoatherosclerosis
#14
Ryan D Madder, Mohsin Khan, Mustafa Husaini, Margaret Chi, Sarah Dionne, Stacie VanOosterhout, Andrew Borgman, J Stewart Collins, Mark Jacoby
BACKGROUND: Neoatherosclerosis is an emerging phenomenon in which lipid-rich plaques (LRPs) develop within pre-existing stents. This study was undertaken to describe near-infrared spectroscopy (NIRS) and intravascular ultrasound findings in pre-existing stents and to compare NIRS findings in pre-existing stents, in which an increased lipid signal has been speculated to indicate neoatherosclerosis, and NIRS findings in a control group of freshly implanted stents, in which any lipid signal originates from fibroatheroma under the stent...
January 2016: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/26553728/plaque-disruption-by-coronary-computed-tomographic-angiography-in-stable-patients-vs-acute-coronary-syndrome-a-feasibility-study
#15
Abhay N Bilolikar, James A Goldstein, Ryan D Madder, Kavitha M Chinnaiyan
AIMS: This study was designed to determine whether coronary CT angiography (CTA) can detect features of plaque disruption in clinically stable patients and to compare lesion prevalence and features between stable patients and those with acute coronary syndrome (ACS). METHODS: We retrospectively identified patients undergoing CTA, followed by invasive coronary angiography (ICA) within 60 days. Quantitative 3-vessel CTA lesion analysis was performed on all plaques ≥25% stenosis to assess total plaque volume, low attenuation plaque (LAP, <50 HU) volume, and remodelling index...
March 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/26338299/near-infrared-spectroscopy-enhances-intravascular-ultrasound-assessment-of-vulnerable-coronary-plaque-a-combined-pathological-and-in-vivo-study
#16
Rishi Puri, Ryan D Madder, Sean P Madden, Stephen T Sum, Kathy Wolski, James E Muller, Jordan Andrews, Karilane L King, Yu Kataoka, Kiyoko Uno, Samir R Kapadia, E Murat Tuzcu, Steven E Nissen, Renu Virmani, Akiko Maehara, Gary S Mintz, Stephen J Nicholls
OBJECTIVES: Pathological studies demonstrate the dual significance of plaque burden (PB) and lipid composition for mediating coronary plaque vulnerability. We evaluated relationships between intravascular ultrasound (IVUS)-derived PB and arterial remodeling with near-infrared spectroscopy (NIRS)-derived lipid content in ex vivo and in vivo human coronary arteries. APPROACH AND RESULTS: Ex vivo coronary NIRS and IVUS imaging was performed through blood in 116 coronary arteries of 51 autopsied hearts, followed by 2-mm block sectioning (n=2070) and histological grading according to modified American Heart Association criteria...
November 2015: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/25596793/first-in-man-use-of-intravascular-near-infrared-spectroscopy-in-the-carotid-arteries-to-characterize-atherosclerotic-plaque-prior-to-carotid-stenting
#17
Ryan D Madder, Amr E Abbas, Robert D Safian
No abstract text is available yet for this article.
February 2015: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/25418711/detection-by-near-infrared-spectroscopy-of-large-lipid-cores-at-culprit-sites-in-patients-with-non-st-segment-elevation-myocardial-infarction-and-unstable-angina
#18
COMPARATIVE STUDY
Ryan D Madder, Mustafa Husaini, Alan T Davis, Stacie VanOosterhout, Jan Harnek, Matthias Götberg, David Erlinge
OBJECTIVE: This study was performed to assess the lipid burden of culprit lesions in non-ST-segment elevation myocardial infarction (non-STEMI) and unstable angina (UA). BACKGROUND: A recent intracoronary near-infrared spectroscopy (NIRS) study showed 85% of STEMI culprit lesions have a maximum lipid core burden index in 4-mm (maxLCBI(4mm)) ≥ 400. Whether culprit lesions in non-STEMI and UA are characterized by a similarly large lipid burden is unknown. METHODS: We studied 81 non-STEMI and UA patients undergoing culprit vessel NIRS imaging before stenting...
November 15, 2015: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/25266075/coronary-liposuction-during-percutaneous-coronary-intervention-evidence-by-near-infrared-spectroscopy-that-aspiration-reduces-culprit-lesion-lipid-content-prior-to-stent-placement
#19
David Erlinge, Jan Harnek, Isabel Gonçalves, Matthias Götberg, James E Muller, Ryan D Madder
AIMS: Intracoronary near-infrared spectroscopy (NIRS) in ST-segment elevation myocardial infarction (STEMI) has demonstrated substantial lipid in STEMI culprit plaques. Thrombus aspiration during primary PCI reduces distal embolization and improves reperfusion. This study was performed to examine if aspiration thrombectomy reduces the lipid content of acute coronary syndrome (ACS) culprit plaques. METHODS AND RESULTS: NIRS-IVUS imaging was performed in patients with an ACS at two hospitals in the US and Sweden...
March 2015: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/24746646/validity-of-estimated-glomerular-filtration-rates-for-assessment-of-renal-function-after-renal-artery-stenting-in-patients-with-atherosclerotic-renal-artery-stenosis
#20
Geoffrey M Crimmins, Ryan D Madder, Victor Marinescu, Robert D Safian
OBJECTIVES: The purpose of this study was to evaluate the validity of estimates of glomerular filtration rate (eGFR) for assessing serial changes in renal function after renal artery stenting. BACKGROUND: eGFR are unreliable for assessing serial renal function in patients with atherosclerotic renal artery stenosis (RAS). eGFR have not been validated for assessment of serial renal function after renal artery stenting. METHODS: Serum creatinine (SCr) and (125)I-iothalamate GFR (iGFR) were measured in RAS patients before and after renal artery stenting...
May 2014: JACC. Cardiovascular Interventions
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