# A postoperative client is learning incentive spirometry. The client’s coached baseline volume is 1,500 mL. The plan requires at least 80% of that volume with a slow sustained inhalation, keeping this device’s flow marker in the shaded window. Click the attempt that meets both goals.

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> url: https://mymerci.kr/pages/nclex_q.php?qn_id=581196&lang=en  
> language: en  
> subject: Basic Care and Comfort  
> category: BCC

## Question

A postoperative client is learning incentive spirometry. The client’s coached baseline volume is 1,500 mL. The plan requires at least 80% of that volume with a slow sustained inhalation, keeping this device’s flow marker in the shaded window. Click the attempt that meets both goals.

![](https://mymerci.kr/data/nclex/hotspot/regen_20260908_2350/HSR533.svg)

## Explanation

C reaches 1,300 mL while the flow marker remains inside the slow-flow window.

## In-depth explanation

Quick answer
C. C reaches 1,300 mL while the flow marker remains inside the slow-flow window.
Why this is the best choice
The volume target is 1,500 × 0.80 = 1,200 mL. A higher inspired volume is not sufficient if obtained with an overly rapid inhalation. Read the piston against the volume scale and the separate flow marker against the target window. C is the displayed attempt satisfying both conditions.
Clinical picture
The observations are fictional teaching data. Apply the stated context; the selected feature does not by itself replace a complete bedside assessment.
Memory hook
Assess maneuver quality as well as the largest number achieved.
Decision rule
Assess maneuver quality as well as the largest number achieved.
Why the other regions do not fit
A has acceptable flow but reaches only 600 mL. B reaches 1,500 mL and D reaches 1,800 mL, but both markers are above the slow-flow window. Their greater volumes do not meet the technique requirement.
**Sources**
- Incentive spirometry uses slow deep inhalation; follow the clinician’s volume goal and device instructions.

## Key concepts

- **Inspired volume and flow must both meet the coached maneuver** — Assess maneuver quality as well as the largest number achieved.
- **Comparison with context** — D has the largest volume but fails the independent flow condition.

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