The Simplify Project

NCT05011877 | Recruiting

• 1 other identifier: 21-103
• Study Type: observational
• Target: 50
• Locations: 1 country
• Sites: 1

Brief Summary

The high frequency of unplanned hospital visits of patients with chronic hypercapnic respiratory failure (e.g., chronic obstructive pulmonary disease, obesity-related hypoventilation) constitutes a major public health problem. Most patients admitted for acute exacerbations (AHRF) have additional comorbidities, especially sleep disorders. Often untreated, sleep disorders contribute to multiple readmissions (≈70% at one year) and increase readmission costs. The investigators will: 1) identify these patients early during unplanned hospital admissions and perform sleep studies using EEG and oximetry before hospital discharge and two months after to compare sleep abnormalities in the two moments; 2) investigate the association between sleep abnormalities in the two sleep studies with clinical outcomes (1-year readmission and death); 3) investigate the acute effects of high-flow nasal cannula (HFNC) to treat sleep abnormalities as a simplified alternative. The investigators anticipate sleep abnormalities during the hospital stay and two months after discharge will be associated with poor clinical outcomes (readmission, death) and HFNC to acutely reduce sleep abnormalities.

Conditions

Acute Hypercapnic Respiratory Failure

Keywords

Acute Hypercapnic Respiratory Failure; Patient Readmission; Mortality; Sleep Disorders, Intrinsic

Outcome Measures

Primary Outcomes (1)

• 1-year hospital readmission and 1-year mortality

  The primary endpoint is to compare the rate of 1-year Hospital readmission and mortality between patients with acute hypercapnic respiratory failure with vs. without sleep abnormalities during the home sleep study measured by the odds ratio product (ORP) and the 2017 American Academy of Sleep Medicine rules

  1 year

Secondary Outcomes (10)

• Hospital length of stay

  Through study completion, an average of 1 year

• Need of ventilatory support

  Through study completion, an average of 1 year

• Need of ICU admission

  Through study completion, an average of 1 year

• In-hospital mortality

  Through study completion, an average of 1 year

• HFNC effects on sleep depth according to the ORP range

  15 hours

Study Arms (2)

Acute Hypercapnic Respiratory Failure patients with Sleep Disorders

Acute Hypercapnic Respiratory Failure patients with Sleep Disorders

Device: High-flow nasal cannula therapy

Acute Hypercapnic Respiratory Failure patients without Sleep Disorders

Acute Hypercapnic Respiratory Failure patients without Sleep Disorders

Device: High-flow nasal cannula therapy

Interventions

High-flow nasal cannula therapy DEVICE

High-flow nasal cannula therapy (HFNC) (from 25 - 60 L/min based on patient's tolerance) will be used in 21 participants during one additional sleep study to investigate its acute impact on reducing sleep abnormalities. Inspired fraction of oxygen will be titrated to maintain patient SpO2 similar to the levels during standard oxygen therapy.

Acute Hypercapnic Respiratory Failure patients with Sleep Disorders; Acute Hypercapnic Respiratory Failure patients without Sleep Disorders

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients with acute hypercapnic respiratory failure (pH \<7.35 and PaCO2 \> 45 mmHg at admission) admitted for an unplanned hospitalization or emergency room visit.

You may qualify if:

• Adult patients requiring an unplanned hospitalization or emergency room visit due to an acute hypercapnic respiratory failure exacerbation (AHRF), not on home noninvasive or invasive ventilation, neuromuscular disease (e.g., spinal cord injury) or central nervous system disorders (e.g., cerebral vascular accident, Alzheimer), absence of tracheotomy, and non-morbidly obese.

You may not qualify if:

• Patients with AHRF due to drug overdose
• Ventilatory support (noninvasive or invasive ventilation) is needed before or during the sleep studies or if an acute deterioration (e.g., cerebral vascular accident, cardiac arrest) happens before or during the sleep studies.

Sponsors & Collaborators

• Unity Health Toronto: lead

Study Sites (1)

St. Michael's Hospital

Toronto, Ontario, M5B 1W8, Canada

RECRUITING

Related Publications (12)

• Younes M, Ostrowski M, Soiferman M, Younes H, Younes M, Raneri J, Hanly P. Odds ratio product of sleep EEG as a continuous measure of sleep state. Sleep. 2015 Apr 1;38(4):641-54. doi: 10.5665/sleep.4588.

  PMID: 25348125 BACKGROUND

• Sharma S, Mather PJ, Chowdhury A, Gupta S, Mukhtar U, Willes L, Whellan DJ, Malhotra A, Quan SF. Sleep Overnight Monitoring for Apnea in Patients Hospitalized with Heart Failure (SOMA-HF Study). J Clin Sleep Med. 2017 Oct 15;13(10):1185-1190. doi: 10.5664/jcsm.6768.

  PMID: 28859720 BACKGROUND

• Younes M, Soiferman M, Thompson W, Giannouli E. Performance of a New Portable Wireless Sleep Monitor. J Clin Sleep Med. 2017 Feb 15;13(2):245-258. doi: 10.5664/jcsm.6456.

  PMID: 27784419 BACKGROUND

• Berry RB, Brooks R, Gamaldo C, Harding SM, Lloyd RM, Quan SF, Troester MT, Vaughn BV. AASM Scoring Manual Updates for 2017 (Version 2.4). J Clin Sleep Med. 2017 May 15;13(5):665-666. doi: 10.5664/jcsm.6576. No abstract available.

  PMID: 28416048 BACKGROUND

• Dres M, Younes M, Rittayamai N, Kendzerska T, Telias I, Grieco DL, Pham T, Junhasavasdikul D, Chau E, Mehta S, Wilcox ME, Leung R, Drouot X, Brochard L. Sleep and Pathological Wakefulness at the Time of Liberation from Mechanical Ventilation (SLEEWE). A Prospective Multicenter Physiological Study. Am J Respir Crit Care Med. 2019 May 1;199(9):1106-1115. doi: 10.1164/rccm.201811-2119OC.

  PMID: 30818966 BACKGROUND

• Drouot X, Roche-Campo F, Thille AW, Cabello B, Galia F, Margarit L, d'Ortho MP, Brochard L. A new classification for sleep analysis in critically ill patients. Sleep Med. 2012 Jan;13(1):7-14. doi: 10.1016/j.sleep.2011.07.012. Epub 2011 Dec 6.

  PMID: 22153778 BACKGROUND

• Rochwerg B, Granton D, Wang DX, Helviz Y, Einav S, Frat JP, Mekontso-Dessap A, Schreiber A, Azoulay E, Mercat A, Demoule A, Lemiale V, Pesenti A, Riviello ED, Mauri T, Mancebo J, Brochard L, Burns K. High flow nasal cannula compared with conventional oxygen therapy for acute hypoxemic respiratory failure: a systematic review and meta-analysis. Intensive Care Med. 2019 May;45(5):563-572. doi: 10.1007/s00134-019-05590-5. Epub 2019 Mar 19.

  PMID: 30888444 BACKGROUND

• Nishimura M. High-Flow Nasal Cannula Oxygen Therapy in Adults: Physiological Benefits, Indication, Clinical Benefits, and Adverse Effects. Respir Care. 2016 Apr;61(4):529-41. doi: 10.4187/respcare.04577.

  PMID: 27016353 BACKGROUND

• Sklar MC, Dres M, Rittayamai N, West B, Grieco DL, Telias I, Junhasavasdikul D, Rauseo M, Pham T, Madotto F, Campbell C, Tullis E, Brochard L. High-flow nasal oxygen versus noninvasive ventilation in adult patients with cystic fibrosis: a randomized crossover physiological study. Ann Intensive Care. 2018 Sep 5;8(1):85. doi: 10.1186/s13613-018-0432-4.

  PMID: 30187270 BACKGROUND

• Rittayamai N, Phuangchoei P, Tscheikuna J, Praphruetkit N, Brochard L. Effects of high-flow nasal cannula and non-invasive ventilation on inspiratory effort in hypercapnic patients with chronic obstructive pulmonary disease: a preliminary study. Ann Intensive Care. 2019 Oct 22;9(1):122. doi: 10.1186/s13613-019-0597-5.

  PMID: 31641959 BACKGROUND

• Roca O, Riera J, Torres F, Masclans JR. High-flow oxygen therapy in acute respiratory failure. Respir Care. 2010 Apr;55(4):408-13.

  PMID: 20406507 BACKGROUND

• Frat JP, Thille AW, Mercat A, Girault C, Ragot S, Perbet S, Prat G, Boulain T, Morawiec E, Cottereau A, Devaquet J, Nseir S, Razazi K, Mira JP, Argaud L, Chakarian JC, Ricard JD, Wittebole X, Chevalier S, Herbland A, Fartoukh M, Constantin JM, Tonnelier JM, Pierrot M, Mathonnet A, Beduneau G, Deletage-Metreau C, Richard JC, Brochard L, Robert R; FLORALI Study Group; REVA Network. High-flow oxygen through nasal cannula in acute hypoxemic respiratory failure. N Engl J Med. 2015 Jun 4;372(23):2185-96. doi: 10.1056/NEJMoa1503326. Epub 2015 May 17.

  PMID: 25981908 BACKGROUND

MeSH Terms

Conditions

Respiratory Insufficiency; Sleep Disorders, Intrinsic

Condition Hierarchy (Ancestors)

Respiration Disorders; Respiratory Tract Diseases; Dyssomnias; Sleep Wake Disorders; Nervous System Diseases; Mental Disorders

Study Officials

• Laurent Brochard, MD, PhD

  Unity Health Toronto - St. Michael's Hospital

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Laurent Brochard, MD, PhD

CONTACT

416-864-5686; Laurent.Brochard@unityhealth.to

Antenor Rodrigues, PT

CONTACT

Antenor.Rodrigues@unityhealth.to

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 20, 2021
• First Posted: August 18, 2021
• Study Start: September 1, 2021
• Primary Completion (Estimated): July 1, 2026
• Study Completion (Estimated): July 1, 2026
• Last Updated: May 20, 2025

Record last verified: 2025-05

Data Sharing

• IPD Sharing: Will not share

Locations

CA (1)