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Pyloric Stenosis — NCLEX Cheat Sheet

Projectile vomit, olive mass
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👤 By the CinnaRN Clinical Content Team 🕐 Updated 2026-07-11 🏷️ Physiological Adaptation 🔖 Free to read, print, and share
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Use this quick-reference guide to spot, treat, and prevent Pyloric Stenosis on the NCLEX. Keep it handy during review and on exam day!

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Causes

Why it happens
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Signs

What to look for
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Labs

Key numbers

Do

Nursing actions

Quick Tip

The hallmark is forceful, projectile vomiting of nonbilious (no bile) stomach contents shortly after feeding.

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