Medications might also cause a drop in blood pressure. Beta-blockers and nitroglycerin, used to treat heart disease, are common culprits. Diuretics, tricyclic antidepressants, and erectile dysfunction drugs can also cause hypotension. Some people have low blood pressure for unknown reasons.
Theoretically, then, the President can probably pardon him/her-self for any Federal crime â but this only prevents actual prosecution for that crime, not impeachment for the crime itself. Prior Answer, to the hypothetical of the VP murdering the President and then pardoning himself:
I'm not sure a President's ability to pardon covers state convictions and state laws. But what would be likely to happen is, if a President Elect commits a crime after the election but before the inauguration, they would be pressured to resign and allow the Vice-President Elect to assume the office.