Question

An IV started at 0025 with an infusion time of \(1 \mathrm{hr} 15 \mathrm{~min}\)______ (military time).

Short answer

0140.

Step-by-step solution

Convert Infusion Time to Minutes

The infusion time given is 1 hour and 15 minutes. First, convert this into total minutes. - 1 hour = 60 minutes- 15 minutes is already in minutesAdd these together: \( 60 + 15 = 75 \) minutes.

Convert Start Time to Minutes Since Midnight

The IV started at 0025, which is 25 minutes past midnight on that day. This is 25 minutes from the start of the clock at 0000 in military time. So, 0025 is equivalent to 25 minutes since midnight.

Add Infusion Time to Start Time

Now, add the infusion duration to the start time in minutes:- Start time in minutes: 25 minutes- Infusion time in minutes: 75 minutesTotal: \( 25 + 75 = 100 \) minutes since midnight.

Convert Total Minutes Back to Military Time

To convert 100 minutes back to military time:- There are 60 minutes in an hour. - Divide 100 by 60 to find the hour: \( 100 \div 60 = 1 \) hour and a remainder of 40 minutes.- Therefore, the total time is 1 hour and 40 minutes past midnight. This corresponds to 0140 in military time.

Key concepts

Military Time Conversion

Military time, also known as the 24-hour clock, is a system of timekeeping that eliminates the need for "AM" and "PM" designations. This system is straightforward:

• Hours range from 00 to 23, starting at midnight.
• Minutes are displayed as usual, ranging from 00 to 59.

To read military time, keep in mind that from 0000 to 1159 the time is equivalent to standard "AM" hours. For times from 1200 to 2359, simply subtract 1200 to convert to "PM". For example:

• 0025 is 25 minutes past midnight, and written as 12:25 AM in standard time.
• For time written as 0140, it means 1 hour and 40 minutes past midnight or 1:40 AM.

Converting between 12-hour and 24-hour formats requires practice, so take your time to familiarize yourself with this non-disambiguated method.

Infusion Duration

When working with IV infusions, it’s crucial to understand the total infusion duration to calculate the precise end time. Infusion duration typically combines hours and minutes. Consider this example:

• An IV infusion time is given as 1 hour and 15 minutes.
• Convert hours to minutes to simplify calculations: 1 hour is 60 minutes.
• Add the remaining minutes: 60 + 15 = 75 minutes total for the infusion.

Knowing the total infusion duration helps in the step-by-step progression from start time to end time in a problem or clinical scenario. This process ensures precision in medication delivery schedules, which is critical in clinical practice.

Minutes to Hours Conversion

Converting total minutes back to a combination of hours and minutes is a handy skill, especially in medical calculations such as determining IV infusion end times. Here is a simple way to do it: Suppose you have 100 minutes that need converting:

• Divide 100 by 60 (since there are 60 minutes in an hour): By doing this calculation, you find 1 full hour with a remainder.
• Subtract 60 minutes (1 hour) from 100 minutes, which leaves you with 40 minutes.
• Hence, 100 minutes is equivalent to 1 hour and 40 minutes.

This mixed duration (hours and minutes) can be easily translated back into military time as 0140. Understanding this conversion allows for accurate planning and execution of time-dependent activities.