If someone had angina from a quick bp drop but stabilizes will it cause damage or cause ventricular tachycardia?

No permanent injury: If the angina was caused by the blood pressure drop (caused, for example, by a medication), and it resolved (and the heart rhythm was normal) when the blood pressure returned to norma, l it is unlikely it caused permanent damage. However, if the angina was the cause of the blood pressure drop, that would be more concerning. Either way, this needs to be carefully evaluated by a doc.