Exercise….Again… how do you think she went this time? (Read to the end (or skip) it’s worth it)

So after last time I was told that my heart probably freaked out as I was failing at normal human needs like food and sleep. So better equipped I went out today to try again and slow.

Just a walk… maybe a preset “hike” on the treadmill… HRM linked to see the rate easy. Ecg - in case a decent trace was obtained. Stemoscope taped to my chest - a hybrid erbs spot which actually got good sound despite movement. I felt like a lab rat but was ready to go.

Choose a trek. One looks easy… but didn’t check the stats. Instant 10 grade incline. It’s ok. We’re walking at 3km/h. Easy pace. Listening to may heart in my ears. The sound is good. I’m surprised. I can hear her picking up speed and my breathing getting faster and deeper. But I feel good.

At some point I jump off the treadmill to check the ecg and the sound come recovery time. You will hear her drop. That is not the recovery. She needs a bit more pushing. I increase the speed as my RPE is comfortable. The HRM registers in the 170s and not pushing further. I still feel fine and it’s been about 20 mins. I know I said I wouldn’t run and would take it easy. But I was feeling ok. So I reduce the incline to 0 and crank up the speed. This is the point where the recording cuts out as you can just hear my feet pounding and not my heart. Little by little I increase the speed until we hit 188. She then drops to 182 and keeps climbing and dropping between the numbers. I decide to push a bit more. We haven’t hit 190 in 5 years to that was the goal. Pushing into a sprint, it takes her about a min to realise what’s going on. I’m watching the rate on the screen 186, 189, 192. I jump off, heartbeat pounding as fast as I’ve ever heard her. I catch my breath for a few seconds and realise I should be screen recording my ecg. She’s slowed down a bit by this point but you can see she really seems to like beating in the 140s. 😂

This time I felt fine. No dizziness. A bit quicker recovery from the 180s - 190s. 🥰

time to wire up

Super Weird

Very weird heartbeat with heavy pressure. The massive spike at 0:24 accompanied by a loud heartbeat is interesting, does anyone know what that is?

-Um, Tae? Is it really necessary for me to wear it? -Come on, Sae. This whole Phantom Thieves case got you on the edge of your health. You look exhausted. I need to know, if your heart is working correctly. This kind of stress can give you huge problems. You don't want Makoto to give you CPR, right? I need to know if you don't have any Long QTs. -Ugh, if you say so... -Besides Sae, you look cute in this one. Imagine, heart is a beautiful part of your body. All the electricity gathered there. Doesn't it make you fell love? *wink wink* PS: I am dumb. I forgot to give credit to original creator. Original creator: Tommy AKA Kingdukeee Source: https://danbooru.donmai.us/posts/4967242

12-lead exam

I had an ECG test today as I felt some kind of suffocation and fast heart rate at midnight in the past couple of weeks. It was especially intense after tennis training. Fortunately my ECG result assured that my heart was normal. The physician just advised me to stop intensive tennis training for a few days.

Finally figured out what the little connector on the side of the MP5 labeled ECG Defib out is for. It literally means that it outputs an analog ECG signal of whatever the monitor is detecting on its ECG input. It’s meant so that you can connect a defibrillator or other equipment to that output and not have to put multiple sets of electrodes on the patient. I just used my mini oscilloscope to show what that looks like. Interestingly it detects the ECG in milivolts but it will output on a ratio of 0.25 to 4 volts per milivolt. The connector is just a regular 1/4in TRS connector used for audio. Sleeve is ground, ring is ECG out, and Tip is ECG out/ marker input. I can also show what the marker input looks like. Let me know if you guys are interested but I could actually build a circuit that would beep every time the voltage goes above a certain threshold using this analog output. I also have yet to find something to connect to the nurse call relay. Interestingly the MP2 also has ECG output but it’s a 6 pin mini DIN connector that I don’t have anything that will fit. I also think I found out why Philips has their monitor support tool software locked down so hard. It allows you to do just about anything with the monitor so you can technically activate software options that cost extra. My MP5 is the base model software except it has the entire clinical applications library unlocked. Hardware wise it has highest option for rear I/O but it has the standard option for measurements. My MP2 has the highest option for measurements with, ECG/Resp (up to 6 leads), SPO2 (with Masimo’s fast SPO2), NBP, temperature, and Press. Press is short for pressure and it’s also know as IBP (Invasive Blood Pressure) it takes an input from a pressure transducer (Which is just an electrical component called a Wheatstone bridge, it’s 4 resistors connected together forming a diamond shape and when pressure is applied and voltage runs through the resistors the voltage will change depending on how much pressure there is) unfortunately to use IBP you need an arterial line which I’m not stupid enough to try to preform myself.

I used the function generator on the mini oscilloscope to output a square wave at 10Hz and this is the result on the ECG waveform.

When I talked about the Bad Grades in Heart Test, this is what it meant. See these thicc spiky lines? Shouldn't be like that!

Worst quality: it's wiggles

Another one, this seems to be VT that is terminated with ventricular escape beats, feel free to correct me here ;)

Smartwatch ECG Signals Transformed into Diagnostic Tools for Heart Failure using Artificial Intelligence

A new study published by researchers at the Mayo Clinic has shown that a smartwatch ECG can accurately detect heart failure in nonclinical environments. This is a significant breakthrough because it shows that heart failure can now be detected earlier and more effectively.

The research published in Nature Medicine reports a couple of health technology advances, which include an app and backend infrastructure that allow patients to share their ECG data from a smartwatch with their clinicians remotely in a secure and easy way, as well as a modified version of a proven 12-lead ECG artificial intelligence algorithm that can now be used to record ECGs on a single-lead watch.

It has been found in the study that consumer smartwatch ECGs can detect patients with cardiac dysfunction, a potentially life-threatening and often asymptomatic condition.

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getting wired up for a recording

A handsome Asian athlete is having an ultrasound heart scan at a sports medical clinic.

I've just built my own ecg machine for under 15 euros