During dental treatment, a 62 year old insulin-dependent diabetic, suddenly complains of severe, crushing, retrosternal pain. The appropriate initial management would be to stop treatment and
1. administer sublingual nitroglycerin.
2. administer 100 oxygen.
3. monitor the patient.
4. administer 50 dextrose intravenously
(1) (2) (3)
(1) and (3)
(2) and (4)
(4) only
All of the above.
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