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Related Concept Videos

Physical Assessment of the Respiratory Tract II: Palpation01:24

Physical Assessment of the Respiratory Tract II: Palpation

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Physical assessment of the respiratory tract is critical in identifying potential health issues. One key component of this assessment is palpation, a technique healthcare providers use to assess the body for abnormalities. This content explores the method of palpation in evaluating the respiratory tract, focusing on thoracic palpation and tactile fremitus.
Thoracic Palpation
Thoracic palpation detects tenderness, masses, lesions, respiratory excursions, and vocal fremitus. The nurse assesses...
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Respiratory System Abnormal Finding II: Palpation and Auscultation01:31

Respiratory System Abnormal Finding II: Palpation and Auscultation

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In assessing respiratory abnormalities, palpation and auscultation are critical tools for detecting and interpreting various pathophysiological changes. These techniques provide insight into underlying disorders by evaluating tactile sensations and sounds produced by the respiratory system.
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
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Physical Assessment of the Respiratory Tract IV: Auscultation01:28

Physical Assessment of the Respiratory Tract IV: Auscultation

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Auscultation is a crucial component of the physical assessment of the respiratory tract. It offers valuable insights into airflow through the bronchial tree and potential lung obstructions. This process involves careful listening to breath, voice, and adventitious sounds, which can reveal a wealth of information about a patient's respiratory health.
Breath Sounds
Breath sounds are categorized into vesicular, bronchovesicular, and bronchial.
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Doppler Effect - II01:05

Doppler Effect - II

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The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
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Physical Assessment of the Respiratory Tract III: Percussion01:29

Physical Assessment of the Respiratory Tract III: Percussion

3.9K
The respiratory system, fundamental to life, consists of complex structures responsible for gas exchange. The percussion assessment is critical to understanding this system's health and functionality. This non-invasive assessment technique allows healthcare providers to evaluate the density or aeration of the lungs, thereby identifying potential abnormalities.
Percussion in Respiratory Assessment
Percussion evaluates underlying tissue composition with audible and tactile vibrations,...
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Doppler Effect - I00:56

Doppler Effect - I

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The Doppler effect and Doppler shift were named after the Austrian physicist and mathematician Christian Johann Doppler in 1842, who conducted experiments with both moving sources and moving observers. Consider an observer standing on a street corner, observing an ambulance with a siren sound passing by at a constant speed. The observer experiences two characteristic changes in the sound of the siren. Initially, the sound increases in loudness as the ambulance approaches and decreases in...
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Related Experiment Video

Updated: Mar 8, 2026

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
09:58

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp

Published on: February 3, 2014

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Doppler vocal fremitus.

Wesley Fiser1, Balakrishna Pai1, Srikanth Vallurupalli1

  • 1University of Arkansas for Medical Sciences, Little Rock, AR, USA.

Echocardiography (Mount Kisco, N.Y.)
|January 29, 2017
PubMed
Summary

Spectral Doppler revealed an extracardiac source in a metastatic breast cancer patient. This finding, mimicking vocal fremitus, highlighted turbulent airflow through an obstructed bronchus, aiding diagnosis.

Keywords:
extracardiacfremituslung consolidationspectral Doppler

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Related Experiment Videos

Last Updated: Mar 8, 2026

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
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Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions
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Hemi-laryngeal Setup for Studying Vocal Fold Vibration in Three Dimensions

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Area of Science:

  • Cardiology
  • Pulmonology
  • Medical Imaging

Background:

  • Metastatic breast cancer can present with complex thoracic complications.
  • Spectral Doppler is a key tool in cardiovascular assessment.
  • Extracardiac sources of abnormal Doppler signals require careful consideration.

Observation:

  • A patient with metastatic breast cancer exhibited a regular spectral Doppler event synchronized with respiration.
  • A chest CT scan identified a large mediastinal mass.
  • The mass was causing postobstructive pneumonia.

Findings:

  • The observed Doppler signal represented turbulent airflow through an obstructed bronchus.
  • Sound waves conducted through pulmonary consolidation created this signal.
  • This phenomenon is analogous to "vocal fremitus" in physical examination.

Implications:

  • This case demonstrates a novel application of spectral Doppler in diagnosing extracardiac masses.
  • Accurate timing of Doppler abnormalities is crucial to prevent misdiagnosis.
  • This finding expands the differential diagnosis for abnormal cardiac signals.