
Is Pulse Rate Of 40 Bpm A Cause For Concern?

Forgot to say my blood pressure has been around 140/60 and my pulse has been around 40 during this problem. That's about usual for my BP; my pulse is usually around 50.
Right now BP is 153/74. Pulse =51.
Light-Head waves greatly reduced. Just one during last 10 mins.
Just happens that I have my 6-month appointment with my cardiologist tomorrow,
I would explain as follows:
Detailed Answer:
Hello!
Welcome on HCM!
I passed carefully through your actual medical conditions and would like to explain that your light-headed feelings seem to be related to extreme bradyarrhythmia (around 40 bpm).
You are usually bradycardic at around 50 bpm, but 40 bpm is quite low and may produce several complaints like light-headed feeling, vertigo, body weakness, etc.
Also, atrial fibrillation by itself leads to irregular heartbeats and hence non-uniform cardiac output. This may exacerbate similar neurological symptomatology.
Coming to this point, tha fact you have a persistent bradycardia and recurrent episodes of atrial fibrillation raises the necessity of a thorough heart rhythm and rate investigation for ruling in/out a possible sich sinus syndrome (SSS), which may be responsible for similar clinical complaints and dangerous life-threatening complications (prolonged sinus pauses, ectreme bradycardia, syncope, cardiac arrest).
In such case, it would be necessary to perform an ambulatory 24 to 48 hours ECG monitoring (Holter).
If sufficient evidence about SSS it gathered from Holter monitoring, probably pacemaker implantation would be the next rationale step.
As your complaint of light-headed feeling is diminishing, probably you need to discuss with your cardiologist tomorrow as scheduled on the above mentioned issues.
Otherwise, if the complaints returns again, you should promptly ask medical assistance to the nearest ER service to prevent any serious complicantions derived by extreme bradyarrhythmic state (as I described above).
Meanwhile, try to avoid certain stimulant substances (taurine, etc.) which may exert adverse effects on heart rhythm.
Hope you will find this answer helpful!
In case of any further uncertainties, feel free to ask me again.
Kind regards,
Dr. Iliri

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