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Related Concept Videos

Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

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...
Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

Assessment of Ventilation II: Respiratory Depth and Rhythm

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:
Assessment of Respiration01:23

Assessment of Respiration

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 asthma or COPD,...
Breathing01:05

Breathing

The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
Alterations in Respiration II01:30

Alterations in Respiration II

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 include...
Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

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 can...

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Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
08:34

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns

Published on: September 16, 2019

Challenging the two-minute tidal breathing challenge test.

Anne J Lexmond1, Paul Hagedoorn, Henderik W Frijlink

  • 1Department of Pharmaceutical Technology and Biopharmacy, University of Groningen , 9713 AV Groningen, The Netherlands .

Journal of Aerosol Medicine and Pulmonary Drug Delivery
|March 21, 2013
PubMed
Summary

The 2-minute tidal breathing challenge test for adenosine 5'-monophosphate (AMP) requires careful control of nebulizer parameters. Nebulizer performance is affected by AMP concentration, jet pressure, and suction flow, impacting bronchial challenge test outcomes.

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Area of Science:

  • Respiratory Medicine
  • Pharmacology

Background:

  • Adenosine 5 -monophosphate (AMP) bronchial challenge tests often use methacholine dosing protocols.
  • The applicability of methacholine's 2-minute tidal breathing challenge test to AMP requires investigation.
  • Nebulizer output parameters influencing bronchial challenge tests were examined.

Purpose of the Study:

  • To determine if the 2-minute tidal breathing challenge test protocol for methacholine is suitable for AMP.
  • To assess the impact of nebulizer parameters on AMP delivery during bronchial challenge testing.
  • To identify if additional parameter control is necessary for standardized AMP challenge protocols.

Main Methods:

  • Utilized the Sidestream nebulizer (APS Pro Aerosol Provocation System).
  • Investigated the effects of AMP concentration, jet pressure, and suction flow rate.
  • Measured nebulizer output rate and aerosol droplet size distribution.

Main Results:

  • Reducing jet pressure increased droplet size (5.10 to 8.49 μm).
  • Suction flow increased output rate.
  • Higher AMP concentration with suction resulted in smaller droplets and lower output.

Conclusions:

  • Nebulizer performance is significantly influenced by AMP concentration, jet pressure, and suction flow.
  • These factors affect the administered AMP dose and deposition site.
  • Active control and specification of these parameters are crucial for reproducible bronchial challenge tests.