Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/5/2025

Assessment and Management of ALS Patients on BiPAP

Respiratory Function Assessment

  • The American Academy of Sleep Medicine recommends assessing symptoms of hypoventilation despite BiPAP use, such as morning headaches, daytime sleepiness, or disturbed sleep, in patients with ALS 1
  • Patients with ALS should be asked about changes in breathing pattern, increased shortness of breath, or orthopnea, as part of routine follow-up 2
  • Recent respiratory infections or hospitalizations should be assessed in ALS patients on BiPAP, as part of comprehensive care 1, 3

Nutritional Status Assessment

  • The American Academy of Nutrition and Dietetics recommends assessing weight changes since last visit, as weight loss >5-10% is associated with decreased survival in ALS patients 4, 2
  • Changes in appetite, meal duration, and fatigue during or after eating should be assessed in ALS patients, as part of nutritional evaluation 4, 5
  • The need for dietary modifications, such as thickened liquids or pureed foods, should be assessed in ALS patients with dysphagia 2

Bulbar Function Assessment

  • The American Speech-Language-Hearing Association recommends assessing for progression of bulbar symptoms, such as changes in speech clarity or volume, in ALS patients 5
  • Signs of aspiration, such as coughing during meals or recurrent pneumonia, should be assessed in ALS patients, as part of bulbar function evaluation 2, 5

Quality of Life and Functional Assessment

  • The American Academy of Neurology recommends assessing overall functional status using structured questions based on ALS Functional Rating Scale-Revised (ALSFRS-R) domains in ALS patients 6
  • Sleep quality and the impact of BiPAP on sleep should be assessed in ALS patients, as part of quality of life evaluation 1

BiPAP Settings and Equipment Review

  • The American Academy of Sleep Medicine recommends reviewing current BiPAP settings and assessing if adjustments are needed based on symptoms in ALS patients 1
  • The use of supplemental oxygen with BiPAP and review of settings should be assessed in ALS patients, as part of equipment evaluation 1

Monitoring Recommendations

  • Regular assessment of oxygenation and ventilation, such as arterial blood gas or end-tidal CO2, should be scheduled for ALS patients on BiPAP 1
  • Screening for malnutrition, such as BMI or weight loss, should be recommended every 3 months for ALS patients 2, 3
  • The Volume-Viscosity Swallow Test (V-VST) may be considered for clinical screening of dysphagia progression in ALS patients, with 92% sensitivity and 80% specificity 7, 6

Red Flags Requiring Immediate Attention

  • Significant weight loss (>10% of body weight) since last visit is a red flag requiring immediate attention in ALS patients 4, 2
  • New or worsening signs of respiratory failure despite BiPAP use are a red flag requiring immediate attention in ALS patients 1
  • Recent aspiration events or pneumonia are a red flag requiring immediate attention in ALS patients 2

Follow-up Planning

  • More frequent follow-ups should be scheduled if there is rapid progression of symptoms in ALS patients 5
  • Earlier referral for PEG placement may be considered if significant dysphagia is present but respiratory function is still adequate in ALS patients 8
  • Coordination between neurology, pulmonology, nutrition, and speech therapy services is essential for comprehensive care of ALS patients 5, 8

REFERENCES

1

best clinical practices for the sleep center adjustment of noninvasive positive pressure ventilation (nppv) in stable chronic alveolar hypoventilation syndromes. [LINK]

Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2010

5

Bulbar Symptoms: Clinical Significance and Management [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

6

Diagnostic Evaluation of Dysphagia [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

8

Clinical Presentation and Management of Amyotrophic Lateral Sclerosis (ALS) [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025