bradycardia

Just to be sure - you've cleared your bradycardia as healthy with a doctor, right?

Actually, 60 is the edge of bradycardia, unless you're really, really fit.

My dad registered as having bradycardia using the home devices.

I have no idea about the treatment you describe, but the mammalian dive reflex is very real, and is a useful way to induce bradycardia.

Both too little and too much mess with the heart:> Magnesium is also cardiotoxic and, in high concentrations, can cause bradycardia [#].

Yeah the real tricky thing is how well they do. We originally thought he had bradycardia because his heart rate as measured by his heart pressure cuff showed it in the high 30s. However once he got an EKG, it became clear that his heart rate was normal but he was afib and all the irregularity wasn't being picked up properly by the BP cuff monitor.

Mammals would undergo states of bradycardia or hypoxia as an over-activation of parasympathetic vagus system.

The electrocardiogram may reveal atrial standstill, nodal rhythm, prolonged intraventricular conduction time, and progressive bradycardia leading to ventricular fibrillation and/or arrest.

Use hydroxychloroquine with caution in patients with conditions that may increase the risk of QT prolongation including congenital long QT syndrome, bradycardia, AV block, heart failure, stress-related cardiomyopathy, myocardial infarction, stroke, hypomagnesemia, hypokalemia, hypocalcemia, or in patients receiving medications known to prolong the QT interval or cause electrolyte imbalances.