secretion management, Swallowing

Respiratory Muscle Strength Training

respiratory muscle strength training tracheostomy

Respiratory Muscle Strength Training for Tracheostomy and Mechanical Ventilation

Respiratory muscle strength training can either be directed to the inspiratory or expiratory muscles.  Respiratory muscle strength training has clinical benefits including: improved dyspnea, peak cough flow, laryngeal function, QOL, vent weaning, speech, voice and swallow performance.  These benefits can translate to patients with tracheostomy and mechanical ventilation.  

Expiratory muscle strength training (EMST) focuses the expiratory muscles including the abdominal wall muscles and the internal and external oblique and intercostal muscles.  A primary goal of EMST is strengthening of the expiratory muscles by increasing the expiratory load during breathing exercises using either resistive or pressure threshold devices.  

For secretion management issues, expiratory muscle strength training (EMST) has been shown to improve cough strength and swallowing. During EMST training, there has been increased activation of the submental muscles.  Increased movement of the hyolaryngeal complex also occurred.  Both of these are important for airway protection (Troche, M, 2015).  EMST has shown improvements for individuals with neurologic conditions such as Parkinson disease, multiple sclerosis, and Lance-Adams syndrome; in those with respiratory diseases, such as chronic obstructive pulmonary disease; and in healthy young adults and sedentary and active elderly.  Many patients with tracheostomy can benefit as they may have these underlying conditions.  

Inspiratory muscle strength training (IMST) includes the diaphragm and the accessory muscles which are the sternocleidomastoid, scalenes and pectoralis minor.  Inspiratory muscle strength training has been shown in some studies to improve weaning from mechanical ventilation. Inspiratory muscle strength can be measured by maximum inspiratory pressure (MIP). 

Benefits of Respiratory Muscle Strength Training for Patients with Tracheostomy or Mechanical Ventilation

Patients with tracheostomy and/or mechanical ventilation typically have a cuffed tracheostomy tube that is initially placed during the tracheostomy procedure.  The complication of tracheostomy, and particularly a cuffed tracheostomy may include impaired swallowing, impaired secretion management, weak cough reflex and muscle atrophy.  These complications occur in part due to the altered breathing pattern once a cuffed tracheostomy tube is placed.  The patient will inhale and exhale through the tracheostomy tube with little to no airflow through the upper airway.  Mechanical ventilation provides a means to reduce the effort of breathing on the individual.  The muscles of respiration are in limited use, and therefore disuse atrophy is common.  

Respiratory muscle strength training can be beneficial for patients on mechanical ventilation to help with the weaning process.  Patients on mechanical ventilation typically present with inspiratory muscle weakness, especially during prolonged mechanical ventilation.  Diaphragmatic atrophy occurs rapidly and is detectable in patients after just 18–69 h of controlled mechanical ventilation.  Inspiratory muscle weakness is a predictor for failure to wean from the ventilator.  Failure to wean from the ventilator is associated with critical illness myopathy, infections, airway trauma, mortality, morbidity, increased length of stay and reduced quality of life.  

Ventilator and/or Tracheostomy Parametors

Respiratory muscle strength training is feasible and safe for patients with ETT or a tracheostomy tube in situ.  The article, Inspiratory Muscle Strength Training for Intensive Care Patients: A Multidisciplinary Practical Guide, highlights the patients characteristics that are appropriate for using inspiratory muscle strength training.  

Patient characteristics include:

  • Alert and cooperative
  • PEEP less than or equal to 10
  •  FiO2 less than 60%
  • RR less than 25
  • Able to trigger spontaneous breaths on the ventilator
During threshold or resistance devices, the patient must be disconnected from mechanical ventilation, which can result in de-recruitment and atelectasis.  This is why it is important that the patient is not requiring high levels of positive end expiratory pressure (PEEP).  

Respiratory Muscle Devices

There are many inspiratory and expiratory strength trainers on the market.  The most commonly used devices for RMT fall into two categories, improving muscle strength by breathing against a resistance or by overcoming a threshold.  Protocols depend on the device used and the underlying disorder and should be tailored to each individual’s need.  

Expiratory Muscle Strength Training Devices

  • The Breather can be used for both inspiratory and expiratory respiratory muscle strength training.  The Breather is a resistance device with easy to use inspiratory/expiratory dial.  
  • The Acapella combines positive expiratory pressure (PEP) training with vibrations to help mobilize secretions. The Green Acapella is for patients able to maintain an expiratory flow of greater than or equal to 15LPM for 3 seconds.  The Blue Acapella is for less resistance.  The frequency and flow resistance can be changed with the expiratory resistance dial. 
  • EMST-150 is used for expiratory muscle strength training and uses a pressure relief valve.  The calibration on the EMST150 is adjustable from 0-150cm H20.

Inspiratory Muscle Strength Training Devices

Devices that provide inspiratory muscle strength training include The Breather, Threshold IMT, PowerBreathe, Ultrabreathe, Pflex, Portex IMT, and the O2 Trainer.  

The Breather and Threshold IMT have adaptors that can be attached to the tracheostomy and also during mechanical ventilation.  

Use of all inspiratory devices listed above can be used with tracheostomy and mechanical ventilation via a mouthpiece.  However, a one-way speaking valve such as the Passy-Muir Valve must first be in place.  Some airflow will continue to flow through the tracheostomy tube, although the patient may achieve some inspiratory force through the mouthpiece.  One a patient is spontaneously breathing and is also able to tolerate capping, all inspiratory flow will occur through the upper airway for more efficient inspiratory muscle strength training.  

The Breather Device

The Breather is both an inspiratory and expiratory muscle strength trainer that can be used with patients with tracheostomy and mechanical ventilation.  The Breather can be purchased below on Tracheostomy Education.  We also offer a coupon code if purchased directly with the manufacturer. 

 

the breather coupon
the Breather coupon code

Use our coupon code for The Breather for 20% off plus free shipping!

Claim your coupon in 3 easy steps.

  1. Click the ACTIVATE button (this will open a new tab through the manufacturer’s website).
  2.  Coupon code breathernicole will automatically be added. Just add to Cart!  
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Free protocol for use with mechanical ventilation upon purchase through our store.  

Resources

Troche, M.  Respiratory Muscle Strength Training for the Management of Airway Protective Deficits. Perspectives on Swallowing and Swallowing Disorders. 2015

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