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Related Concept Videos

Larynx01:21

Larynx

1.5K
The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids,...
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Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen01:16

Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen

537
Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
537
Oxygen Delivering System I: Nasal Cannula and Face Mask01:26

Oxygen Delivering System I: Nasal Cannula and Face Mask

298
The human body requires oxygen to function, and when the natural process of respiration is hindered, external devices, including the following, are needed to help deliver this vital gas.
Nasal Cannula
A nasal cannula is a lightweight tube split at one end into two prongs and placed in the nostrils. It is typically used to deliver low to medium levels of oxygen.
Suggested flow rate: The suggested flow rate for a nasal cannula typically ranges between 1 and 6 L/min.
Oxygen percentage setting:...
298
Administering Oxygen by Mask01:30

Administering Oxygen by Mask

326
Administering Oxygen by Mask
Administering oxygen by mask is a common nursing intervention that provides supplemental oxygen to patients with respiratory distress or chronic lung conditions. This procedure involves delivering oxygen at a specified rate through a face mask connected to an oxygen source.
Equipment
The equipment necessary for this procedure includes:
326
Tracheostomy Care II: Procedure01:25

Tracheostomy Care II: Procedure

165
Tracheostomy care is an essential nursing skill that involves cleaning and maintaining a tracheostomy tube to prevent infection and other complications. Here's a step-by-step guide explaining each procedure with its rationale. Note that disposable gloves are to be worn at all times and changed as often as needed to maintain a sterile work environment, and to protect both patient and healthcare worker.
Step 1: Perform hand hygiene, and put on personal protective equipment: gown, gloves, mask...
165
Oxygen Delivering System III: Tracheostomy and T-piece01:23

Oxygen Delivering System III: Tracheostomy and T-piece

837
Oxygen delivery is critical in clinical care, especially for patients with respiratory disorders or those undergoing surgical procedures. Various systems, such as tracheostomy and the T-piece, deliver oxygen to the lungs, ensuring adequate arterial oxygenation.
Tracheostomy
A tracheostomy is a surgically created opening (stoma) in the anterior part of the trachea. It is used to establish a patient airway, bypass an upper airway obstruction, simplify the removal of secretions, permit long-term...
837

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Related Experiment Video

Updated: Jun 26, 2025

Laryngeal Mask Airway LMA Placement in a Neonatal Patient Simulator Using a Non-Inflatable Supraglottic Airway SGA
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Laryngeal Mask Airway LMA Placement in a Neonatal Patient Simulator Using a Non-Inflatable Supraglottic Airway SGA

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[The Myth about the Laryngeal Mask].

Christina Massoth, Manuel Wenk

    Anasthesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS
    |May 17, 2024
    PubMed
    Summary

    Peak pressures over 20 mbar are not a contraindication for laryngeal masks. Using a pressure alarm limit is a safer alternative to setting a peak pressure limit on respirators.

    Area of Science:

    • Anesthesiology
    • Respiratory Medicine
    • Critical Care

    Background:

    • Laryngeal masks are common airway management devices.
    • Understanding pressure limits is crucial for patient safety during ventilation.
    • Oropharyngeal leak pressure is a key parameter for laryngeal mask use.

    Purpose of the Study:

    • To evaluate the safety and efficacy of peak pressure limits with laryngeal masks.
    • To determine the relationship between oropharyngeal leak pressure and esophageal air leakage.
    • To identify optimal ventilation strategies when using laryngeal masks.

    Main Methods:

    • Investigated peak pressures and their relation to laryngeal mask contraindications.
    • Analyzed the correlation between oropharyngeal leak pressure and esophageal air leakage.

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  • Assessed the impact of respirator peak pressure limits on tidal volume.
  • Evaluated the utility of pressure alarm limits as an alternative strategy.

    • Main Results:

    • Peak pressures of 20 mbar or higher are not absolute contraindications for laryngeal mask use.
    • Oropharyngeal leak pressure does not directly predict esophageal air leakage.
    • Setting a peak pressure limit of 20 cm H2O can result in inadequate tidal volumes.
    • Pressure alarm limits are a viable alternative to peak pressure limits.
    • Positive end-expiratory pressure (PEEP) and muscle relaxation can be used with laryngeal masks.

    Conclusions:

    • Laryngeal masks can be safely used with peak pressures exceeding 20 mbar.
    • Ventilator settings should prioritize adequate tidal volume over strict peak pressure limits.
    • Pressure alarm limits offer a safer approach to managing ventilation pressures with laryngeal masks.
    • The use of PEEP and relaxation is compatible with laryngeal mask ventilation.