A pulse rate of over hundred is known as tachycardia and in normal subjects may be a cause for concern, however this type of fast pulse rate is associated with chronic obstructive lung disease, which i presume that your OH is suffering from, as the heart is trying to get as much "oxygen packed " blood, to the vital body parts.
I guess that your OH was a smoker and had COPD and as such, I fear that little can be done about his pulse rate, or should be done.
If you are worried, then see your doctor for reassurance.