Final answer:
Without specifying the medication used to treat the 68 year old male with irregular, narrow complex tachycardia, a general time interval for repeating the medication cannot be established. Typically, adenosine can be redosed within 1 to 2 minutes; other medications such as beta-blockers and calcium channel blockers have individual dosing regimens.
Step-by-step explanation:
Medication Time Interval for Tachycardia
Regarding the question about repeating medication for a patient with irregular, narrow complex tachycardia, the medication interval depends on the specific medication being used. However, this information is incomplete in the question provided, so a general answer cannot be given. Standard emergency medications used for tachycardia include adenosine, beta-blockers, and calcium channel blockers. For adenosine, a common protocol allows repeating the dose within 1 to 2 minutes if required, doubling the dose from 6 mg to 12 mg. Beta-blockers and calcium channel blockers have their own specific dosing regimens and should be used according to the patient's hemodynamic status and underlying medical conditions.
When treating tachycardia, it's critical to monitor the patient's heart rate (HR), blood pressure, and symptoms continuously. If the patient is stable and in absence of acute distress, immediate treatment may not be necessary. On the other hand, if there are signs of poor perfusion or distress, prompt treatment should be initiated according to Advanced Cardiac Life Support (ACLS) guidelines. The final decision for timing and choice of medication must be made by the healthcare provider based on the specific clinical situation of the patient.