My father was using a traditional sphygmomanometer(mercury-based) for a long time, he says it shows accurate results. Especially when repeated, meaning you take a reading once and take another reading in 5/10 min interval, it still shows the same results.
It got worn out, then he purchased a digital BP monitor. It does highlight when his BP is low or high but consecutive readings never matched.
I thought its probably due to the product quality, then I bought him a Withings BPM Connect. Obviously, because I use other Withings products and I like the quality in general.
He complains the problem still persist. Consecutive readings are not matching at all. He tried a few different frequencies in taking the readings, It has been always inconsistent for the past 3 days. He also tried the 3X reading option and consecutive 3X readings are not matching. (It differs by 20 points average)
1. Which reading he should go with? Very first reading or the second one? Always very first readings are high(Be it 1X or 3X), the consecutive readings are lower. (Eg: First reading 135, Second reading 115)
2. Can these electronic BP monitors be compared with mercury-based sphygmomanometers?
3. OR I should have bought BPM Core for consistent results? I did see it had a digital stethoscope, but I thought its nothing to do with the BP feature. That's why I bought BPM connect.
Appreciate a lot if someone can clarify this.