What is called percussion in physical examination?

NVS Staff Nurse - 2022

Nursing Foundation

Easy

Appeared in: NVS Staff Nurse - 2022

Explanation

Percussion is a fundamental physical assessment method that involves tapping on a body surface, usually with the fingertips.
The tapping action creates vibrations and sounds that travel through the underlying tissues.
The characteristics of the resulting sound (e.g., dull, resonant, tympanic) provide clues about the density, size, and position of the organs beneath.
This technique helps clinicians differentiate between structures that are solid (like the liver), fluid-filled, or air-filled (like the lungs or stomach).

Option A: The 'act of touch' defines palpation, not percussion. Palpation involves using the hands and fingers to feel for characteristics like texture, temperature, size, and tenderness.
Option B: The 'act of observation' defines inspection. Inspection is the visual examination of the patient for any abnormalities in appearance, color, shape, or movement.
Option C: The 'act of listening to sounds' defines auscultation. Auscultation involves using a stethoscope to listen to internal body sounds from the heart, lungs, and abdomen.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Physical Examination Techniques: Percussion as background academic context rather than a clinical decision trigger.
Mastering the four basic examination techniques (IPPA) is a core competency for nurses, enabling them to perform a comprehensive physical assessment and gather vital data about a patient's health status.
The sequence of examination is critical. For the abdomen, the order is Inspection, Auscultation, Percussion, Palpation (IAPP). Performing auscultation before percussion and palpation prevents the stimulation of bowel activity, which could alter bowel sounds and lead to an inaccurate assessment.
What if? If a nurse percusses over the right upper quadrant where the liver is located and hears a loud, booming (hyperresonant) sound instead of the expected dullness, it could signify a serious condition like a pneumothorax where the lung has collapsed and is pushing the liver down, or free air in the abdominal cavity (pneumoperitoneum) from a perforated organ, which is a surgical emergency.

How to Approach the Question

First, identify the key term in the question, which is 'percussion'.
Recall the four primary techniques used in a physical examination: Inspection, Palpation, Percussion, and Auscultation.
Mentally define each technique: Inspection is looking, Palpation is touching, Percussion is tapping, and Auscultation is listening.
Match the term 'percussion' with its corresponding action, which is 'tapping'.
Review the given options and select the one that accurately defines percussion.
Eliminate the other options by correctly identifying them as the definitions for palpation, inspection, and auscultation.

Concept Tested & Keywords

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E6 Nursing Fundamentals Potter Perry 12e Part 3 p. 64-66

E6 Nursing Fundamentals Taylor p. 381-383

E6 Medicine Macleod Clinical Examination 15e p. 104-106