After checking a patient's blood pressure and obtaining a detailed medical history (focusing on medications that might interact with or contraindicate this type of intervention), a patient must contact medical control, ensure that the patient's nitroglycerin is not expired, that it belongs to the patient, and that the patient has not had too much already. If a patient meets all of these requirements, the EMT can assist the patient in taking a nitro tablet by having them place the pill on the underside of the tongue and allowing it to dissolve. Blood pressure must again be taken and the effectiveness of the medicine checked.
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