1. Articles from Maomao Zhang

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    1. Development of lipid-rich plaque inside bare metal stent: possible mechanism of late stent thrombosis? An optical coherence tomography study

      Development of lipid-rich plaque inside bare metal stent: possible mechanism of late stent thrombosis? An optical coherence tomography study

      Aims To study in-stent tissue characteristics by optical coherence tomography (OCT) at long-term follow-up in patients with previous bare metal stent implantation. Methods and results Among 1636 patients who underwent bare metal stent (BMS) implantation between 1999 and 2006, 39 patients with 60 BMS who developed recurrent ischaemia underwent repeat catheterisation and OCT imaging between June 2008 and August 2009. The average time interval between initial BMS implantation and OCT imaging was 6.5±1.3 years. A lesion that had features of lipid-rich plaque was found in 20 stents (33.3%) in 16 patients (41%). Fibrous intima was observed ...

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    2. Pulmonary Vascular Changes in Pulmonary Hypertension: Optical Coherence Tomography Findings

      Pulmonary Vascular Changes in Pulmonary Hypertension: Optical Coherence Tomography Findings

      A 25-year-old man presented with a 3-month history of recurrent syncope, exertional chest discomfort, and shortness of breath. On physical examination, he had right ventricular heave, loud P2, jugular venous distension, tricuspid regurgitation murmur, and lower extremity edema. D-dimer was negative. Echocardiography showed right ventricular hypertrophy with elevated right ventricular pressure. Left ventricular function was normal. Cardiac catheterization showed pulmonary artery pressure of 131/50/78 mm Hg (concurrent aortic pressure was 145/80 mm Hg). Pulmonary wedge pressure was 15 mm Hg. Pulmonary angiography showed dilation of the main pulmonary artery with peripheral tapering (Figure 1). After pulmonary angiography ...

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    1-2 of 2
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  2. Topics in the News

    1. (2 articles) Massachusetts General Hospital
    2. (2 articles) Harvard University
    3. (2 articles) Harbin Medical University
    4. (2 articles) Jingbo Hou
    5. (2 articles) Ik-Kyung Jang
    6. (2 articles) Bo Yu
    7. (2 articles) Abbot
    8. (1 articles) Shaosong Zhang
    9. (1 articles) Boston Scientific
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