New approach to management of intraaortic balloon pumps in patients with peripheral vascular disease: Case reports of four patients requiring urgent IABP insertion

Four selected cases of emergent IABP insertion in PV patients are presented. After angiographic documentation of critical iliac stenosis, conservative peripheral angioplasty was performed prior to IABP insertion. No patient experienced a peripheral ischemic event associated with IABP use. © 1992 Wiley-Liss, Inc.     

玻璃体视网膜界面疾病

玻璃体视网膜交界面的状态与许多临床疾病有紧密联系；诱导完全性的玻璃体后脱离对许多疾病的发生、治疗以及预后起重要作用，可以减少玻璃体切割手术中对视网膜的损伤。本研究就玻璃体视网膜疾病以及诱导完全性玻璃体后脱离的方法做一综述。     

Early Prosthetic Valve Dysfunction Due to Bioprosthetic Valve Thrombosis: The Role of Echocardiography

Objectives

The purpose of this study was to review the institutional practice of surveillance transthoracic echocardiography (TTE) for diagnosing early prosthetic valve dysfunction (PVD).

Vitreous and Vision Degrading Myodesopsia

Macromolecules comprise only 2% of vitreous, yet are responsible for its gel state, transparency, and physiologic function(s) within the eye. Myopia and aging alter collagen and hyaluronan association causing concurrent gel liquefaction and fibrous degeneration. The resulting vitreous opacities and collapse of the vitreous body during posterior vitreous detachment are the most common causes for the visual phenomenon of vitreous floaters. Previously considered innocuous, the vitreous opacities that cause floaters sometimes impact vision by profoundly degrading contrast sensitivity function and impairing quality-of-life. While many people adapt to vitreous floaters, clinically significant cases can be diagnosed with Vision Degrading Myodesopsia based upon echographic assessment of vitreous structure and by measuring contrast sensitivity function. Perhaps due to the ubiquity of floaters, the medical profession has to date largely ignored the plight of those with Vision Degrading Myodesopsia. Improved diagnostics will enable better disease staging and more accurate identification of severe cases that merit therapy. YAG laser treatments may occasionally be slightly effective, but vitrectomy is currently the definitive cure. Future developments will usher in more informative diagnostic approaches as well as safer and more effective therapeutic strategies. Improved laser treatments, new pharmacotherapies, and possibly non-invasive optical corrections are exciting new approaches to pursue. Ultimately, enhanced understanding of the underlying pathogenesis of Vision Degrading Myodesopsia should result in prevention, the ultimate goal of modern Medicine.     

Challenges and Special Aspects of Pulmonary Hypertension in Middle- to Low-Income Regions: JACC State-of-the-Art Review

Challenges and special aspects related to the management and prognosis of pulmonary hypertension (PH) in middle- to low-income regions (MLIRs) range from late presentation to comorbidities, lack of resources and expertise, cost, and rare options of lung transplantation. Expert consensus recommendations addressing the specific challenges for prevention and therapy of PH in MLIRs with limited resources have been lacking. To date, 6 MLIR-PH registries containing mostly adult patients with PH exist. Importantly, the global prevalence of PH is much higher in MLIRs compared with high-income regions: group 2 PH (left heart disease), pulmonary arterial hypertension associated with unrepaired congenital heart disease, human immunodeficiency virus, or schistosomiasis are highly prevalent. This consensus statement provides selective, tailored modifications to the current PH guidelines to address the specific challenges faced in MLIRs, resulting in the first pragmatic and cost-effective consensus recommendations for PH care providers, patients, and their families.     

玻璃体后脱离与糖尿病视网膜病变的关系

目的：探讨玻璃体后脱离（ｐｏｓｔｅｒｉｏｒ ｖｉｔｒｅｏｕｓ ｄｅｔａｃｈｍｅｎｔ,ＰＶＤ）程度与糖尿病视网膜病变（ｄｉａｂｅｔｉｃ ｒｅｔｉｎｏｐａｔｈｙ,ＤＲ）病情发展间的关系。方法：根据ＰＶＤ程度将１８３只眼ＤＲ分为完全ＰＶＤ、部分ＰＶＤ及无ＰＶＤ３组,经平均３２个月的治疗,追踪观察其病情及视力变化。结果：完全ＰＶＤ组ＤＲ病情稳定,视力预后较好;部分ＰＶＤ组病情易恶化,视力预后差。结论：ＰＶ