How does hyperglycemia and hypoglycemia affect heart rate and blood pressure?

Not directly . There is no direct effect other than for the stress induced by a hypoglycemic reaction (hr and BP would go up) or the diuretic/dehydrating effect of prolonged hyperglycemia (bp would go down while hr went up).
The rate of change. The rate of change of the blood sugar can affect the heart rate and blood pressure through the sympathetic nervous system output.

Related Questions

Could you tell me what are hyperglycemia and hypoglycemia's effects on heart rate and blood pressure?

Increasing . Hypoglymia will trigger a sympathetic response increasing hr and bp. During hyperglycemia, if you are diabetic, the response will be lighter or none, depending in complications associated like hyperoamolar state and ketoacidosis, when the response will be stronger. Read more...

What are hypoglycemia's effects on heart rate and blood pressure?

Hypoglycemia. Low blood sugar may cause palpitations or fast heart rate, and causes a weak, shaky feeling. Blood pressure may go up (due to heart working harder with stress) or down (due to overall weakness effect) or remain normal. If someone feels like sugar is low and unable to test right away, it's safe to eat/drink extra to bring sugar up than to wait and risk passing out, etc. Read more...

Why might someone have low heart rate and blood pressure?

Nature/ Genes. Low blood pressure and low pulse may be normal in people who always have been like that. They are of concern when they change significantly from the baseline BP or pulse. Pulses too low at any point of life (less than 40 ) are of concern. Athletes develope pulses in the 50s. Medicines may cause bradycardia in the 50s (digoxin, beta or calcium blockers (metoprolol, atenolol, diltiazem, verapamil. Read more...