11 noviembre 2014

AMERICAN HEART ASSOCIATION. Access Site Complications After Peripheral Vascular Interventions

Daniel Ortiz, MD, Arshad Jahangir, MD, Maharaj Singh, PhD, Suhail Allaqaband, MD, Tanvir K. Bajwa, MD and Mark W. Mewissen, MD

Background: Access site hematomas and pseudoaneurysms are the most frequent complications of peripheral vascular intervention (PVI); however, their incidence and risk factors remain unclear.

08 septiembre 2015

AMERICAN HEART ASSOCIATION. Population-Based Study of Incidence, Risk Factors, Outcome, and Prognosis of Ischemic Peripheral Arterial Events

Dominic P.J. Howard, DPhil; Amitava Banerjee, DPhil; Jack F. Fairhead, MA; Linda Hands, FRCS; Louise E. Silver, DPhil; Peter M. Rothwell, FMedSci

Background: There are few published data on the incidence and long-term outcomes of critical limb ischemia, acute limb ischemia, or acute visceral ischemia with which to inform health service planning, to monitor prevention, and to enable risk prediction.

11 septiembre 2015

AMERICAN HEART ASSOCIATION. The Contemporary Safety and Effectiveness of Lower Extremity Bypass Surgery and Peripheral Endovascular Interventions in the Treatment of Symptomatic Peripheral Arterial Disease

Thomas T. Tsai, MD, MSc; Thomas F. Rehring, MD; R. Kevin Rogers, MD, MS; Susan M. Shetterly, MS; Nicole M. Wagner, MS; Rajan Gupta, MD; Omid Jazaeri, MD; Nasim Hedayati, MD; W. Schuyler Jones, MD; Manesh R. Patel, MD; P. Michael Ho, MD, PhD; Alan S. Go, MD; David J. Magid, MD, MPH

Background: Treatment for symptomatic peripheral artery disease includes lower extremity bypass surgery (LEB) and peripheral endovascular interventions (PVIs); however, limited comparative effectiveness data exist between the 2 therapies. We assessed the safety and effectiveness of LEB and PVI in patients with symptomatic claudication and critical limb ischemia.

01 enero 2016

INTERNATIONAL JOURNAL OF RADIOLOGY. C-reactive protein predicts aortic aneurysmal disease progression after endovascular repair

Joaquin De Haro, Silvia Bleda, Francisco Acin

Objectives: This study aims to investigate the prognostic significance of the rate of variation of C-reactive protein (CRP) levels as a predictor of aneurysmal sac and neck expansion and, therefore, of aneurysm disease progression, in patients undergoing endovascular aneurysm repair (EVAR) in the absence of endoleaks.

19 septiembre 2014

AMERICAN HEART ASSOCIATION. Clinical Trials in Peripheral Vascular Disease

Sumeet Subherwal, MD, MBA; Manesh R. Patel, MD; Karen Chiswell, PhD; Beth A. Tidemann-Miller, PhD; W. Schuyler Jones, MD; Michael S. Conte, MD; Christopher J. White, MD; Deepak L. Bhatt, MD, MPH; John R. Laird, MD; William R. Hiatt, MD; Asba Tasneem, PhD; Robert M. Califf, MD

Background: Tremendous advances have occurred in therapies for peripheral vascular disease (PVD); until recently, however, it has not been possible to examine the entire clinical trial portfolio of studies for the treatment of PVD (both arterial and venous disease).

01 diciembre 2014

JACC JOURNALS. Two-Year Life Expectancy in Patients With Critical Limb Ischemia

Yoshimitsu Soga, MD; Osamu Iida, MD; Mitsuyoshi Takahaera, MD; Keisuke Hirano, MD; Kenji Suzuki, MD; Daizo Kawasaki, MD; Yusuke Miyashita, MD; Taketsugu Tsuchiya, MD

Objectives: This study sought to estimate the 2-year life expectancy (2YLE) (estimated survival rate >50% at 2 years) in patients with critical limb ischemia (CLI) using the risk score based on predictors of all-cause mortality within 2 years.

19 agosto 2014

AMERICAN HEART ASSOCIATION. Personalized Approach to Revascularization of Critical Limb Ischemia

Mehdi H. Shishehbor, DO, PhD, MPH and Grant W. Reed, MD

Critical limb ischemia (CLI) is a complex disease process that often occurs alongside numerous comorbidities, and as such requires a personalized, multidisciplinary treatment approach in every patient. Patient outcomes are generally poor and there remains a lack of consensus on the optimal revascularization strategy in individuals with CLI. In recent years, the angiosome (or direct) revascularization concept has gained wider acceptance because it guides reperfusion to the artery supplying the vascular territory containing the ischemic lesion on the foot. However, it stands in contrast to the one straight-line inflow (or indirect) approach classically advocated, in which the largest vessel available for revascularization is targeted regardless of the vascular territory it supplies. Comparisons between both strategies have emerged, with few studies demonstrating equivalent outcomes and many others demonstrating improved wound healing and reduced amputation rates with the angiosome approach.

19 agosto 2014

AMERICAN HEART ASSOCIATION. Effect of Single Tibial Artery Revascularization on Microcirculation in the Setting of Critical Limb Ischemia

Osami Kawarada, MD, Satoshi Yasuda, MD, PhD, Kunihiro Nishimura, MD, PhD, Shingo Sakamoto, MD, Miyuki Noguchi, RN, Yasuomi Takahi, MD, PhD, Koichiro Harada, MD, PhD, Masaharu Ishihara, MD, PhD and Hisao Ogawa, MD, PhD

Background: Benefits of 2-dimensional (2D) angiosome-oriented infrapopliteal revascularization remain controversial. The aim of this retrospective study was to clarify the effect of single tibial artery revascularization on the dorsal and plantar microcirculation of critically ischemic limbs based on skin perfusion pressure (SPP).

01 noviembre 2014

RADIOLOGY. The Interventional Radiology/Diagnostic Radiology Certificate and Interventional Radiology Residency

John A. Kaufman, MD, MS, Chair, SIR IR/DR

The approval of the new certificate in interventional radiology (IR) and diagnostic radiology (DR) by the American Board of Medical Specialties was a notable event for two reasons: The basic training schematic in IR was changed from a 1-4-1 pattern (years of internship-years of DR-years of IR) to a 1-3-2 pattern, and IR was recognized as a primary specialty of the American Board of Radiology.

01 noviembre 2014

RADIOLOGY. The Interventional Radiology/Diagnostic Radiology Certificate: Asking the Hard Questions

Darel E. Heitkamp, MD Richard B. Gunderman, MD, PhD

In September of 2012, the American Board of Medical Specialties (ABMS) approved a new field of residency training, the interventional radiology (IR) residency. The Accreditation Council of Graduate Medical Education (ACGME) added its approval in June of 2013. The result is a new pathway to becoming an interventional radiologist.

01 noviembre 2014

RADIOLOGY. Uterine Fibroids: Semiquantitative Perfusion MR Imaging Parameters Associated with the Intraprocedural and Immediate Postprocedural Treatment Efficiencies of MR Imaging–guided High-Intensity Focused Ultrasound Ablation

Young-sun Kim, MD Byoung-Gie Kim, MD Hyunchul Rhim, MD Duk-Soo Bae, MD Jeong-Won Lee, MD Tae-Joong Kim, MD Chel Hun Choi, MD Yoo-Young Lee, MD Hyo Keun Lim, MD

Purpose: To determine whether semiquantitative perfusion magnetic resonance (MR) imaging parameters are associated with therapeutic effectiveness of MR imaging–guided high-intensity focused ultrasound (HIFU) ablation of uterine fibroids and which semiquantitative perfusion parameters are significant with regard to treatment efficiency.

01 diciembre 2014

RADIOLOGY. Radiologic-Pathologic Analysis of Contrast-enhanced and Diffusion-weighted MR Imaging in Patients with HCC after TACE: Diagnostic Accuracy of 3D Quantitative Image Analysis

Julius Chapiro, MD Laura D. Wood, MD, PhD MingDe Lin, PhD Rafael Duran, MD Toby Cornish, MD, PhD David Lesage, PhD Vivek Charu, BS Rüdiger Schernthaner, MD Zhijun Wang, MD, PhD Vania Tacher, MD Lynn Jeanette Savic, BS Ihab R. Kamel, MD Jean-François Geschwind, MD

Purpose: To evaluate the diagnostic performance of three-dimensional (3D) quantitative enhancement-based and diffusion-weighted volumetric magnetic resonance (MR) imaging assessment of hepatocellular carcinoma (HCC) lesions in determining the extent of pathologic tumor necrosis after transarterial chemoembolization (TACE).

01 diciembre 2014

RADIOLOGY. Pulmonary Embolism and Renal Vein Thrombosis in Patients with Nephrotic Syndrome: Prospective Evaluation of Prevalence and Risk Factors with CT

Long Jiang Zhang, MD, PhD Zhuoli Zhang, MD Shi Jun Li, MD Felix G. Meinel, MD John W. Nance, Jr, MD Chang Sheng Zhou, MD Yan E. Zhao, MD U. Joseph Schoepf, MD Guang Ming Lu, MD

Purpose: To prospectively determine the prevalence of pulmonary embolism (PE) and renal vein thrombosis (RVT) with computed tomography (CT) and to identify markers predictive of PE and/or RVT in a large consecutive cohort of patients with nephrotic syndrome.

01 diciembre 2014

RADIOLOGY. Advantages of US in Percutaneous Dilatational Tracheostomy: Randomized Controlled Trial and Review of the Literature

Alpaslan Yavuz, MD Murat Yılmaz, MD Cemil Göya, MD Emel Alimoglu, MD Adnan Kabaalioglu, MD

Purpose: To compare procedure times and complication rates of preincisional ultrasonographic (US) evaluation and perioperative US guidance in percutaneous dilatational tracheostomy (PDT) with those of the current standard of care, PDT performed without image guidance.

01 diciembre 2014

RADIOLOGY. Automated Real-time Needle-Guide Tracking for Fast 3-T MR-guided Transrectal Prostate Biopsy: A Feasibility Study

Patrik Zamecnik, MD Martijn G. Schouten, MSc Axel J. Krafft, PhD Florian Maier, PhD Heinz-Peter Schlemmer, MSc, MD, PhD Jelle O. Barentsz, MD, PhD Michael Bock, PhD Jurgen J. Fütterer, MD, PhD

Purpose: To assess the feasibility of automatic needle-guide tracking by using a real-time phase-only cross correlation (POCC) algorithm–based sequence for transrectal 3-T in-bore magnetic resonance (MR)–guided prostate biopsies.