New Apple Watch Ultra ECG saved my life

My new apple watch ultra 3.ecg saved my life,I had respiratory failure 5y ago,happened out the blue and I considered myself fit,not extreme but fit enough,about 2 week ago I developed chest pain quite frequently and 7days ago I ordered a apple.cause it had a medically certification ecg monitor,I left the ecg threshold at default to alert a heart rate drop below 50bpm,within 3 days i had 127 heart rate alerts warnings on my watch with it dropping as low as 35bmp when I was sleeping so I phone NHS doctors line and explain about my chest pain,feeling dizzy,she asked me to take a screen shot of the heath app ecg 127 warning,she then immediately sends a ambulance and I get took to the a&e for a ecg/bloods/xrays,when I showed the doctor the 127 ecg warnings on my iphone he kinda dismissed it saying to not really take a apple watch ecg 100% seriously when I asked why he said cause they ever want to sued,I asked him if it could be bradycardia,he said nae I don't think so but we will do a ecg,it turned out there ecg picked up sinus bradycardia with a high qtc of 480,they told me I was lucky I came when I did as I might have stopped breathing and went into respiratory failure which if isn't treated quickly will lead to cardiac arrest,these watches do work and it probably saved my life