8.3 Measurement Skills: Pulse, Respirations, and Output

Measurements Must Be Real, Clean, Accurate, and Recorded

Because one measurement skill is always among your five scored tasks, accuracy is not optional. Counting a pulse, counting respirations, or measuring urinary drainage output requires correct technique, infection control, privacy, and accurate recording on the form Prometric provides. Most checklists require your recorded value to fall within a defined tolerance of the evaluator's own count — commonly plus or minus 2 for pulse and respirations. A value outside tolerance can fail the skill even if your technique looked smooth.

For radial pulse, position the resident comfortably and support the arm. Use the pads of your first two or three fingers over the radial artery at the thumb side of the wrist. Do not use your thumb — it has its own pulse and can be mistaken for the resident's. Press gently enough to feel the beat but not so hard that you block it. Count for a full 60 seconds as most Texas checklists require, then record the rate. Normal adult resting pulse is about 60-100 beats per minute; a rate under 60 or over 100, or an irregular rhythm, is a finding to report.

A pulse is more than a number. Notice whether it is regular or irregular, strong or weak, and whether the resident has symptoms such as dizziness, shortness of breath, chest discomfort, unusual fatigue, or pale color. In the test, do not invent symptoms or overstep your role; in real care, report abnormal findings and complaints promptly.

Respirations are counted by watching the rise and fall of the chest or abdomen. One rise plus one fall counts as one respiration. Normal adult resting respirations are about 12-20 per minute. Many residents change their breathing if they know it is being counted, so keep your fingers near the wrist as if still taking the pulse and count respirations quietly — often immediately after the pulse. Do not tell the resident to breathe faster, slower, deeper, or normally. Your job is to observe the current rate, usually for a full 60 seconds.

Structured Aid: Measurement Accuracy Grid

Urinary drainage output measures the urine in a drainage bag. The drainage system must stay below the level of the bladder and off the floor, and the tubing must not be kinked, pulled tight, or looped in a way that blocks flow. When emptying the bag, wear gloves and keep the drain spout from touching the graduate, floor, bed, or your gloves. If the drain becomes contaminated, follow facility policy and report.

Read liquid output at eye level on a flat surface. The liquid surface curves into a meniscus; read the line at the bottom of the curve. Record the amount in milliliters (mL), not ounces, unless the form asks otherwise. Do not estimate from above or across the room — a difference that looks small matters when intake and output (I&O) are monitored.

Measurement skills create silence, and silence makes candidates nervous. Use short, appropriate statements: "I am going to check your pulse at your wrist," or, for output, "I am going to empty and measure your drainage bag while keeping you covered." You do not need to narrate every number while counting.

Structured Aid: Common Measurement Errors to Avoid

• Counting respirations out loud or while talking to the resident.
• Using the thumb to take a pulse, or counting for only 15 seconds and multiplying when a full minute is required.
• Placing the drainage bag on the bed or raising it above bladder level.
• Touching the inside of the graduate or letting the drain spout touch the floor.
• Reading the meniscus from above instead of at eye level, or recording ounces instead of mL.
• Forgetting to remove gloves and wash hands after handling urine, or leaving the resident without the call light.

Recording is scored as carefully as the measurement itself. Write the value on the provided form in the correct unit, legibly, and at the correct point in the sequence — usually before you finish the skill and leave the resident. Do not write the number on your hand, a scrap of paper, or trust your memory until the end. If the form asks for beats per minute, respirations per minute, or milliliters, match the unit exactly. An accurate count recorded in the wrong place, the wrong unit, or not at all can still cost the skill.

Knowing normal ranges helps you recognize when a value should be reported, which is part of safe care. As a quick reference for healthy adults: temperature about 97.8 to 99.1 degrees Fahrenheit orally, pulse 60-100 beats per minute, respirations 12-20 per minute, and blood pressure around 120/80. You are not diagnosing — you are reporting findings outside the expected range to the nurse. On the test, you obtain and record; in practice, you also flag the abnormal value so the nurse can act.

Practice with real timing using a watch with a second hand. Count pulse and respirations on different people, because rates vary. Practice reading water in a graduate at awkward amounts such as 175 mL or 450 mL, then say and write the final value clearly. The goal is to make accuracy ordinary under pressure.