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Related Concept Videos

Alterations in Respiration II01:30

Alterations in Respiration II

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There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
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Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

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Assessing the respiratory rate and rhythm for a complete minute is crucial for evaluating the breathing pattern. Even a minor increase in the patient's average respiratory rate, by as little as three to five breaths per minute, is an early and vital indicator of respiratory distress. Patients with a respiratory rate exceeding twenty-four breaths per minute require close monitoring to determine the physiological alterations. This careful observation is essential for prompt recognition and...
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Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

Assessment of Ventilation II: Respiratory Depth and Rhythm

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Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
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Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

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Physical assessment of the respiratory tract through inspection is a crucial step in understanding the patient's respiratory health. It provides insights into the functioning of the respiratory system, the musculoskeletal structure, and even the patient's nutritional status. This comprehensive approach involves observing several vital aspects: chest configuration, breathing patterns, respiratory rates, skin color, and use of accessory muscles.
Chest Configuration
The chest configuration...
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Acute Respiratory Failure-IV01:23

Acute Respiratory Failure-IV

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Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
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Assessment of Respiration01:23

Assessment of Respiration

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The respiratory system's basic structures and primary functions lay the foundation for nurses' comprehensive respiratory assessments. This assessment includes subjective and objective data to gauge the patient's respiratory health.
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
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Related Experiment Video

Updated: Jun 27, 2025

Experimental Approach to Examine Leptin Signaling in the Carotid Bodies and its Effects on Control of Breathing
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Respiratory-like movements during an apnea test.

Shinichi Kida1, Isao Nagata1, Tetsuhiro Takei1

  • 1Department of Emergency and Critical Care Medicine Yokohama City Minato Red Cross Hospital Yokohama Japan.

Acute Medicine & Surgery
|April 26, 2024
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Summary

Respiratory-like movements are rare during apnea tests in patients with brain death. This case highlights the importance of further research into this phenomenon for accurate diagnosis.

Keywords:
apnea testbrain deathrespiratory‐like movement

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Area of Science:

  • Neurology
  • Critical Care Medicine

Background:

  • Apnea testing is crucial for diagnosing brain death.
  • Spontaneous movements can occur during apnea tests, but respiratory-like movements are uncommon.

Observation:

  • A 51-year-old male presented with cardiac arrest following a disturbance of consciousness, diagnosed with bilateral cerebellar hemorrhage.
  • Despite clinical signs suggesting brain death, respiratory-like movements mimicking abdominal respiration interrupted the apnea test.
  • Advanced imaging (MRI) showed no cerebral blood flow, and neurophysiological tests (SSEP) indicated absent brain potentials.

Findings:

  • The apnea test was aborted due to respiratory-like movements in a patient with confirmed lack of cerebral blood flow and brain activity.
  • This case presents a rare instance of respiratory-like movements during apnea testing in a brain-dead individual.

Implications:

  • Respiratory-like movements can complicate the diagnosis of brain death, necessitating careful interpretation of apnea tests.
  • Further investigation is needed to elucidate the mechanisms behind these movements in the context of absent brain function.