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Vascular Events In Noncardiac Surgery Patients Cohort Evaluation Study (VISION) (VISION)

2018年4月20日 更新者:McMaster University

Vascular Events In Noncardiac Surgery Patients Cohort Evaluation (VISION) Study

The investigators' study has 4 primary objectives. Among patients undergoing noncardiac surgery the investigators will determine: (1) the incidence of major perioperative vascular events; (2) the optimal clinical model to predict major perioperative vascular events; (3) the proportion of patients with perioperative myocardial infarctions that may go undetected without perioperative troponin monitoring; and (4) the relationship between postoperative troponin measurements and the 1 year risk of vascular death.

研究概览

地位

完全的

详细说明

The increase in elderly patients undergoing surgery, the change in the invasiveness of some surgical interventions, limitations in the methodology and generalizability of previous research, and the VISION Pilot Study results highlight uncertainty about the current incidence of major vascular events and the optimal clinical risk estimation model to predict these events in patients undergoing noncardiac surgery. There is promising but inconclusive preliminary evidence that troponin measurements after surgery may allow physicians to avoid missing perioperative myocardial infarctions and may predict mortality and major vascular events in the first year following surgery. These considerations provide the impetus for the large, adequately powered, multicentre, international, prospective cohort study.

We will determine the incidence of major vascular events, the optimal clinical model to predict major perioperative vascular events, and the extent to which troponin measurements post surgery can identify myocardial infarctions that are likely to go unrecognized and predict vascular death at 1 year. We call this study the Vascular events In noncardiac Surgery patIents cOhort evaluatioN (VISION) Study.

The VISION Study is a prospective cohort study of 40,000 patients who are > 45 years of age, undergoing noncardiac surgery requiring overnight hospital admission, and receiving a general or regional anesthetic. Hospitals (including both university and non-university hospitals) in several countries around the world will recruit patients, over a 2 year period. Study personnel will evaluate patients prior to surgery, follow patients throughout their hospitalization, and contact patients at 30 days and 1 year after surgery. All patients will have troponin T measured post surgery and on the first, second, and third days after surgery. Outcome adjudicators will adjudicate all major vascular events without knowledge of a patient's vascular risk factors.

We will also determine if there are associations between any preoperative or postoperative medications and major perioperative vascular events. We will also determine if there are associations between any medications started after a major perioperative vascular event and vascular mortality 1 year after surgery. We will evaluate the 1 year risk of stroke in patients who do and do not develop atrial fibrillation after surgery and if there is an association with antiplatelet or warfarin therapy. We will measure N-terminal prohormone brain natriuretic peptide (NT-proBNP) in 8,000 - 10,000 patients prior to surgery and determine if NT-proBNP is an independent predictor of major perioperative vascular events. We will determine the incidence of perioperative new acute renal failure requiring dialysis and pneumonia and develop models to predict these events.

研究类型

观察性的

注册 (实际的)

40060

联系人和位置

本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。

学习地点

      • Hong-Kong、中国
        • Prince of Wales Hospital
    • Ontario
      • Hamilton、Ontario、加拿大、L8N 3Z5
        • Health Science Centre, McMaster University
      • Hamilton、Ontario、加拿大、L8N 4A6
        • Saint Joseph's Healthcare
      • Bangalore、印度
        • St. John's Medical College
    • Santander
      • Bucaramanga、Santander、哥伦比亚
        • Universidad Autónoma de Bucaramanga
    • SP
      • São Paulo、SP、巴西、04005-000
        • Instituto de Ensino e Pesquisa do Hospital do Coração (IEP-HCor)
      • Barcelona、西班牙、08041
        • Centro Cochrane Iberoamericano. Hospital de la Santa Creu i Sant Pau
      • Kuala Lumpur、马来西亚、50603
        • Hospital: University Malaya

参与标准

研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

45年 及以上 (成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

取样方法

非概率样本

研究人群

All patients who undergo noncardiac surgery who are at least 45 years of age and receive a general or regional anesthetic from University and Non-University Hospitals.

描述

Inclusion Criteria:

  • All patients who undergo noncardiac surgery are eligible if they are > 45 years of age and receive a general or regional anesthetic (i.e., plexus block, spinal, or epidural).

Exclusion Criteria:

  • We will exclude patients undergoing noncardiac surgery who do not require at least an overnight hospital admission after surgery or who only receive infiltrative (i.e., local) or topical anesthesia.
  • We will also exclude patients previously enrolled in the VISION Study and patients who do not consent to participate.

学习计划

本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。

研究是如何设计的?

设计细节

  • 观测模型:队列
  • 时间观点:预期

研究衡量的是什么?

主要结果指标

结果测量
大体时间
For our first objective (i.e., the incidence of major perioperative vascular events) our primary outcome is major vascular events (i.e., a composite of vascular death, nonfatal myocardial infarction, nonfatal cardiac arrest, and nonfatal stroke)
大体时间:30 days post surgery.
30 days post surgery.

次要结果测量

结果测量
大体时间
For our second objective (i.e., the optimal clinical model to predict major perioperative vascular events) our primary and only outcome is major vascular events.
大体时间:30 days after surgery.
30 days after surgery.
For our third objective (i.e., proportion of patients with perioperative myocardial infarctions that may go undetected without perioperative troponin monitoring) our outcome is myocardial infarction that probably or possibly would have gone undetected
大体时间:30 days after surgery.
30 days after surgery.
For our fourth objective (i.e., the relationship between postoperative troponin measurements and the 1 year risk of vascular death) our outcomes are vascular death, and major vascular events (i.e., vascular death, MI, cardiac arrest, stroke)
大体时间:1 year after surgery.
1 year after surgery.

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

一般刊物

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始

2007年8月1日

初级完成 (实际的)

2014年12月1日

研究完成 (实际的)

2014年12月1日

研究注册日期

首次提交

2007年8月3日

首先提交符合 QC 标准的

2007年8月3日

首次发布 (估计)

2007年8月7日

研究记录更新

最后更新发布 (实际的)

2018年4月24日

上次提交的符合 QC 标准的更新

2018年4月20日

最后验证

2016年3月1日

更多信息

与本研究相关的术语

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