# A nurse is teaching where to place the stethoscope to hear S1 most clearly in an adult. Click the best auscultation location.

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> subject: Lifestyle Choices  
> category: HPM

## Question

A nurse is teaching where to place the stethoscope to hear S1 most clearly in an adult. Click the best auscultation location.

![](https://mymerci.kr/data/nclex/hotspot/v2/v2_cardiac_landmarks.png)

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Hotspot v2 clinical education asset. Keep every option equally prominent; no title, answer label, marker, number, or highlighted correct region.
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## Explanation

Mitral area (PMI) is the best answer. S1 is loudest at the cardiac apex, the mitral area or PMI. Other marked areas do not best match the cue in this item.

## In-depth explanation

Quick answer
Mitral area (PMI) is the best answer. S1 is loudest at the cardiac apex, the mitral area or PMI. Other marked areas do not best match the cue in this item.

Why this is correct
Valve sounds are identified at standard chest-wall listening points where their vibrations are heard most clearly. The side, intercostal space, and sternal or midclavicular landmark must all match before selecting the area.

Easy analogy or mental picture
Picture the precordium as a five-stop map: aortic at the upper right sternal border, pulmonic at the upper left, Erb point one space lower, tricuspid at the lower left sternal border, and mitral at the apex.

Memory hook
S1 is strongest at the apex: the mitral area or point of maximal impulse.

NCLEX decision rule
When a murmur or heart-sound cue names a valve or radiation pattern, match it to the standard auscultation landmark; verify side and intercostal space before clicking.

Why the other choices are wrong
The other regions are valid cardiac listening points, but each emphasizes a different valve or sound. Choosing a nearby point without matching the cue is the common hotspot error.References

- [1]NCBI Bookshelf: Cardiovascular assessment and cardiac auscultation areas

## Clinical scenario

Clinical situation
A nurse is teaching where to place the stethoscope to hear S1 most clearly in an adult.

What the nurse should notice
Mitral area (PMI) is the best answer. S1 is loudest at the cardiac apex, the mitral area or PMI. Other marked areas do not best match the cue in this item.

Transfer to practice
When a murmur or heart-sound cue names a valve or radiation pattern, match it to the standard auscultation landmark; verify side and intercostal space before clicking.

## Key concepts

- **S1** — First heart sound.
- **Point of maximal impulse** — The apical chest-wall point where the left-ventricular impulse is best felt.
- **Mitral area** — Left 5th intercostal space.

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