A novel method for measuring blood pressure

一种测量血压的新方法

• 批准号: EP/D061253/1
• 负责人: Phil Chowienczyk
• 金额: $ 31.83万
• 依托单位: King's College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FD061253%2F1
• 关键词: novel; method; measuring; blood; pressure

Blood pressure is the pressure generated by the heart to push blood around the circulation to supply vital organs like the brain and the kidneys. Measurement of blood pressure is important in many situations: high blood pressure puts a strain on the heart and can lead to heart attacks and strokes; low blood pressure can cause vital organs to fail; during pregnancy high blood pressure is often the sign that pre-eclampsia , a potentially serious problem, is developing. An old fashioned method for measuring blood pressure involves inflating a rubber cuff around the upper arm, measuring the pressure in the cuff with a column of mercury and listening to sounds over the artery in the arm with a stethoscope. Although probably the most accurate method, it is being phased out because it is difficult to perform accurately and mercury is potentially hazardous. Existing automatic electronic methods are less accurate than the mercury method especially in pregnancy and during exercise (another situation in which accurate measurement of blood pressure is important). Neither method works well in seriously ill patients. We have developed a new method based upon detecting changes in pressure or movement of the artery in the lower arm while a blood pressure cuff is inflated around the upper arm. When pressure in the cuff becomes greater than blood pressure in the artery, the artery wall becomes squashed and this changes the movement of the artery further down the arm. The purpose of this research is to develop software that will make this method work automatically and to check that it works well in certain situations such as during exercise, in pregnancy and in critically ill patients.

血压是心脏产生的压力，推动血液循环以供应大脑和肾脏等重要器官。血压测量在许多情况下都很重要：高血压会给心脏带来压力，并可能导致心脏病和中风；低血压会导致重要器官衰竭；怀孕期间高血压通常是先兆子痫（一种潜在的严重问题）正在发展的征兆。测量血压的老式方法包括将上臂周围的橡胶袖带充气，用汞柱测量袖带中的压力，并用听诊器听手臂动脉的声音。虽然可能是最准确的方法，但它正在被逐步淘汰，因为它很难准确执行，而且汞具有潜在的危险。现有的自动电子方法不如水银法准确，尤其是在怀孕和运动期间（精确测量血压很重要的另一种情况）。这两种方法对于重病患者都效果不佳。我们开发了一种新方法，其基础是在上臂周围的血压袖带充气时检测下臂动脉的压力或运动变化。当袖带中的压力大于动脉中的血压时，动脉壁就会被压扁，这会改变动脉向手臂下方的运动。这项研究的目的是开发软件，使这种方法自动发挥作用，并检查它在某些情况下是否有效，例如运动期间、怀孕期间和危重病人。