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 a new monitoring parameter developed by Nihon Kohden

New noninvasive parameter

PWTT, pulse wave transit time, is a new noninvasive parameter which can indicate sudden change in blood pressure. PWTT is measured by continuous monitoring of ECG and pulse wave. No additional sensors or modules are required.

In many cases, change in PWTT correlates with change in blood pressure. When PWTT change exceeds a threshold, it triggers NIBP measurement to confirm blood pressure.

Why PWTT?

Periodic NIBP measurement is only measured at specified times so sudden critical blood pressure changes that occur between the periodic measurements may be missed until the next periodic measurement.

Nihon Kohden's innovative PWTT technology could solve this problem. With PWTT, if sudden blood pressure change occurs between periodic NIBP measurements, PWTT can detect it and trigger an NIBP measurement to confirm it.