Hello!
Welcome and thank you for asking on HCM!
I passed carefully through your question and would explain that his symptoms do not seem to be related to any cardiac disorder (including any
heart attack).
A pinched nerve could be the reason of the pain and
numbness. A blood clot can not be excluded too.
Can you feel the pulse in his hand? Is the hand warm and normal color?
If there is pulse in the hand and it is normal color and warm there is nothing to worry about, as we can exclude any possible blood clot.
In such case, I would recommend consulting with his attending physician and performing a
nerve conduction study to investigate for any pinched nerve.
If the pulse is weak and his arm is cold, I would recommend going to the ER for a physical exam, a Doppler
ultrasound of the arm vessels and some blood lab tests (
complete blood count, D-Dimmer levels, PCR, ESR).
Hope you will find this answer helpful!
Kind regards,
Dr. Iliri