Table 3.79.

Hypertension – ASA (American Society of Anesthesiologists) grading and dental management considerations

Blood pressure mmHg (systolic and diastolic)	ASA grade	Hypertension stage	Key considerations
< 140 and < 90	I	−	Routine dental care
140–159 and 90–99	II	1	Recheck BP, before starting dental care Routine dental care
160–179 and 95–109	III	2	Recheck BP, before starting Medical advice before routine dental care Restrict vasoconstrictors Conscious sedation may help
> 180 and > 110	IV	3	Recheck BP after 5 min quiet rest Only emergency dental care until BP controlled