Watch 6 Classic Medical apps functions

[Varzil]

I understand that the Body Composition Analysis app works by sending an electric pulse into the body & measures by electric impedance… I cannot use that app as I have a pacemaker…

I would like to know what other medically oriented apps work via electric impedance; rather than light. 

Typically, pulse-ox meters that measure the amount of oxygen in the blood work via light concentrated on the finger… does Watch 6 Classic's pulse-ox app work via light?

Which method: light, or electric impedance does the Watch 6 Classic use to implement the Heart Rate, Blood Pressure, Sleep Monitor & any other medical features?

[LongHiker]

@Varzil Pulse oxygen uses light.

Sleep monitor uses motion sensing. 

ECG measures electrical activity. 

Blood pressure is not available in the US since the FDA has not approved its use. 

[Varzil]

Thanks again! What about Heart rate measurement? Electric. I imagine… Also, what about exercise tracking?

Does the Heart Rate & E.C.G sense passively, or send electric pulses into the body? I know that the Body Composition Analysis sends electric pulses into the body, but I don't want to miss out on using a feature if Idon't have to… & E.C.G. & Heart rate _could_ conceivably use passive sensing; rather than actively sending electric currwnt into the body… & I do wonder if exercise measurement is sensored passively or actively.

Thanks in advance,

[gabe80million]

Heart rate is light based. ECG uses electricity, which you have to manually use every single time

[LongHiker]

@gabe80million The ECG measures the electrical activity of the heart. It does not send electricity anywhere. 

Pulse ox and heart rate are measured optically. 

[Varzil]

@LongHiker, tnx! So ECG senses heart function via light? @gabe80million said it uses electricity. don't want to step on either of yopr toes, but since I wear a pacemaker, this is of great importance. Help fm both ofsyou is appreciated!

[LongHiker]

No, ECG measures the electrical activity of the heart. It does not transmit electrical energy. It does not use light.

[Varzil]

Thanks, so that would mean the electricit' would be passively measured. Thanks for giving me that understanding. The poor-English speaking-usage of Samsung TS on text left me quite unclear!

[gabe80million]

Ah, that explains why it only utilizes one finger instead of both of them, unlike the other weight mass related one.

[gabe80million]

Still, I'm no doctor, but I don't think the watch puts out enough electrical related stuff to mess with any pace makers