Cold-Induced Angina Pectoris

I now see why the ER cardiologist wanted me to make an appointment with my cardiologist.   It was not a heart attack but when cold induces angina it indicates that you are likely demanding more oxygen than your heart can easily produce.  (Being cold creates a strong demand for more oxygen to burn calories to keep you warm.)  The reason people die of heart attacks while shoveling snow is not just the increased physical demand but in combination with very cold conditions.   I can assure you that being out under the stars in freezing weather burns a lot of calories.

I suspect he is going to want to do an angiogram to see if any cardiac arteries are in need of cleaning.  If only it was simpler: a self-propelled device just below artery size that did a Roto-Rooter on the arteries and then dissolved on the 3rd or 4th pass.  I suspect passing by aneurysms would be risky, however.