Answer :

Before administering any anti-dysrhythmic agent, it is important to ensure that the patient's pulse is accurately measured. Here is a detailed, step-by-step solution to determine the correct choice:

1. Understand the need for accuracy: Anti-dysrhythmic agents can significantly impact heart rhythms, so having a precise measurement of the baseline heart rate is crucial for determining the correct dosage and monitoring the patient's response.

2. Review the given options:
- Option a: Measuring by ECG could be accurate but is not specified as a standard duration measurement for routine checks.
- Option b: Measuring for 30 seconds could give an estimate but may lack accuracy compared to a longer duration.
- Option c: Measuring every 6 hours is about the frequency rather than the duration, and hence irrelevant to determining an accurate pulse rate before medication administration.
- Option d: Measuring for 1 minute provides a more accurate reading of the pulse, ensuring any irregularities are captured over a sufficient time period.

3. Choose the best practice: Among the options, measuring the pulse for a full 1 minute is considered the most accurate and reliable method. This practice reduces the likelihood of missing intermittent dysrhythmias and provides a comprehensive reading of the heart rate.

Based on this detailed analysis, the correct choice is:

d. for 1 minute

This method ensures that healthcare providers have an accurate baseline before administering any anti-dysrhythmic agents.