The observation period of 2" # years was long enough to assess prophylactic efficacy and to achieve adequate statistical power.
Because of this risk of emergence, we have chosen to stop administering prophylactic norfloxacin to patients admitted to our unit.
There is evidence that it has causal prophylactic activity from tests on sporozoite-induced infections of mice.
This is not merely a semantic distinction, having operational implications related to the different prophylactic approaches.
However, there is controversy about the efficacy, choice, route and timing of prophylactic vasopressors as well as the potential for adverse maternal and fetal effects.
Increased usage in patients with vascular disease could be achieved by improving public knowledge of the bene ts of prophylactic aspirin.
For these reasons they all said that they tended to prescribe prophylactic antibiotics for colds and chest infections.
To conclude, use of prophylactic aspirin in one practice was appropriate and had overcome the usual socio-demographic barriers to preventive activity.
