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Related Concept Videos

Mechanical Ventilation I: Indication and Settings01:29

Mechanical Ventilation I: Indication and Settings

294
Mechanical ventilation is a life-saving technique for managing acute respiratory failure and other respiratory complications. The process involves using a machine known as a ventilator to supply oxygen to the lungs and assist in removing carbon dioxide. It serves as a bridge to long-term mechanical ventilation or a temporary measure until ventilatory support is discontinued. The ventilator can maintain this function for a prolonged period, providing critical support for patients until they can...
294
Mechanical Ventilation II: Invasive Ventilation01:23

Mechanical Ventilation II: Invasive Ventilation

125
Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
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Assessment of Ventilation I: Respiratory Rate01:20

Assessment of Ventilation I: Respiratory Rate

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Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
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Mechanical Ventilation III: Noninvasive Ventilation01:23

Mechanical Ventilation III: Noninvasive Ventilation

99
Noninvasive positive-pressure ventilation (NIPPV), continuous positive airway pressure (CPAP), and bilevel positive airway pressure (BiPAP) are essential methods in respiratory care. These ventilation techniques offer unique benefits for patients with various respiratory conditions, providing adequate support without requiring intubation. Let's explore how each method is crucial in improving patient outcomes and enhancing respiratory therapy.
Noninvasive Positive-Pressure Ventilation...
99
Ventilatory Modes01:14

Ventilatory Modes

125
Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure.
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
125
Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

Assessment of Ventilation II: Respiratory Depth and Rhythm

1.5K
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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Related Experiment Video

Updated: Jun 24, 2025

Monitoring Lung Function with Electrical Impedance Tomography in the Intensive Care Unit
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Early In-Bed Cycle Ergometry in Mechanically Ventilated Patients.

Michelle E Kho1,2, Susan Berney3,4, Amy M Pastva5

  • 1School of Rehabilitation Science, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.

NEJM Evidence
|June 12, 2024
PubMed
Summary
This summary is machine-generated.

Early in-bed cycling added to physiotherapy did not improve physical function in mechanically ventilated ICU patients. This intervention was safe and did not cause serious adverse events, but did not enhance recovery outcomes.

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Area of Science:

  • Critical Care Medicine
  • Rehabilitation
  • Physiotherapy

Background:

  • Mechanical ventilation in critical illness can lead to significant functional disability and morbidity.
  • Early rehabilitation interventions, such as in-bed cycle ergometry, are explored to mitigate intensive care unit (ICU)-acquired impairments.
  • Usual physiotherapy is a standard component of care for these patients.

Purpose of the Study:

  • To determine if early in-bed cycling exercise, when added to usual physiotherapy, improves physical function in adult ICU patients on mechanical ventilation.
  • To assess the safety and efficacy of early in-bed cycling as an adjunct therapy.

Main Methods:

  • A randomized controlled trial involving 360 adult ICU patients on invasive mechanical ventilation.
  • Patients were assigned to either early in-bed Cycling + Usual physiotherapy or Usual physiotherapy alone.
  • The primary outcome was the Physical Function ICU Test-scored (PFIT-s) measured 3 days post-ICU discharge.

Main Results:

  • Cycling intervention began within a median of 2 days of mechanical ventilation initiation.
  • No serious adverse events were reported in either the intervention or control groups.
  • The mean PFIT-s score at 3 days post-ICU discharge was similar between groups (7.7 vs. 7.5), with no statistically significant difference (P=0.29).

Conclusions:

  • Adding early in-bed cycling to usual physiotherapy did not significantly improve physical function in mechanically ventilated ICU survivors.
  • The intervention was safe and well-tolerated, with no serious adverse events.
  • Further research may be needed to explore different protocols or patient populations.