Исследование: как измерить давление более точно | Последние новости сегодня в мире здоровья



Исследование: как измерить давление более точно
Исследование: как измерить давление более точно
Фото: pixabay.com Автоматические тонометры, которыми люди пользуются при измерении давления в домашних условиях, часто выдают результаты с существенными ошибками. Аналогично ситуация обстоит и с многими тонометрами, которые применяются в медицинских учреждениях - и такие ошибки в итоге могут приводить, например, к назначению лекарств для понижения давления тем пациентам, которые фактически в них не нуждаются, сообщает сайт med.vesti. Исследователи из Иерусалимского технологического колледжа и медицинского центра Шаарей-Цедек нашли более точный способ измерения давления. Систолическое давление считается слишком высоким, если его цифровое значение больше 140, а диастолическое - если его показатель больше 90. Ученые отметили, что в кабинете врача пациент может испытывать тревогу или страх, и кровяное давление в этом случае может быть выше обычного. Домашние измерения согласно ранее проведенным исследованиям могут быть некорректными в 70% случаев. Такое устройство созданное в Израиле, в своей основе имеет метод фотоэлетрической плетизмографии. Кроме манжеты, надевающейся на руку, в комплект входит также дополнительный компонент, который снимает электрооптические пробы с пальца. В ходе этой пробы внутрь пальца излучается свет, а специальный датчик измеряет, как этот свет проходит через ткани. Это позволяет определять, каким образом изменяется объем крови по мере сердцебиения. Когда давление манжеты превышает систолическое давление, датчик показывает исчезновение пульсации в пальце, а как только давление манжеты падает - пульсация возвращается. Ранее писали, как продлить жизнь на 28 лет.
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