The Simplify Project

Acute Hypercapnic Respiratory Failure Clinical Trial

— SIMPLIFY  

Official title:

A Strategy to Improve Management and Prolong LIFe Without Readmission for hYpercapnic Patients: The Simplify Project

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT05011877
• Other study ID #: 21-103
• Status: Not yet recruiting
• Start date: September 1, 2021
• Est. completion date: July 1, 2024

Study information

• Verified date: August 2021
• Source: Unity Health Toronto
• Contact: Laurent Brochard, MD, PhD
• Phone: 416-864-5686
• Email: Laurent.Brochard[@]unityhealth.to
• Is FDA regulated: No
• Study type: Observational

Clinical Trial 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.

Description:

The investigators will perform sleep studies using nocturnal EEG measurements and oximetry 1) while the participants are still in the hospital but have reached relative clinical stability (≥48 h after admission, not in ICU and pHv ≥7.36) and 2) two months after hospital discharge at the participant's home. Sleep studies will be performed from 5:00 pm to 8 am. EEG measurements will be performed using a portable monitor (Prodigy Sleep System, Cerebra, Winnipeg, Canada). Sleep assessment will be performed offline. The ORP will be continuously quantified and ORP-derived indices will be calculated. Nocturnal oximetry will be used for detecting sleep desaturation episodes. Comorbidities (e.g., obesity, diagnosed lung or heart disease, Charlson comorbidity index) and exacerbations/hospitalization in the previous year will be identified.

In 21 participants, the investigators will perform one additional sleep study with the participants breathing with high-flow nasal cannula therapy (HFNC) to investigate the acute impact (i.e., during one night) of HFNC on reducing sleep abnormalities. HFNC will be set from 25 - 60 L/min based on participant's tolerance and the inspired fraction of oxygen will be titrated to maintain patient SpO2 similar to the levels during standard oxygen therapy.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 50
• Est. completion date: July 1, 2024
• Est. primary completion date: July 1, 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• 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.

Exclusion Criteria:

• 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.

Related Conditions & MeSH terms

• Acute Hypercapnic Respiratory Failure
• Hypercapnia
• Respiratory Insufficiency

Intervention

Device:
• High-flow nasal cannula therapy
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.

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Unity Health Toronto

References & Publications (12)

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. — View Citation

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. — View Citation

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. — View Citation

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, Béduneau G, Delétage-Métreau 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. — View Citation

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. Review. — View Citation

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. — View Citation

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

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. — View Citation

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. — View Citation

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. — View Citation

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. — View Citation

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. — View Citation

* Note: There are 12 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	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	Hospital length of stay	The secondary endpoint is to compare the length of stay during the hospital admission between patients with acute hypercapnic respiratory failure with vs. without sleep abnormalities during the sleep study performed at the hospital measured by the odds ratio product (ORP) and the 2017 American Academy of Sleep Medicine rules	Through study completion, an average of 1 year
Secondary	Need of ventilatory support	The secondary endpoint is to compare the need of invasive and non-invasive ventilatory support between patients with acute hypercapnic respiratory failure with vs. without sleep abnormalities during the sleep study performed at the hospital measured by the odds ratio product (ORP) and the 2017 American Academy of Sleep Medicine rules	Through study completion, an average of 1 year
Secondary	Need of ICU admission	The secondary endpoint is to compare the need of ICU admission between patients with acute hypercapnic respiratory failure with vs. without sleep abnormalities during the sleep study performed at the hospital measured by the odds ratio product (ORP) and the 2017 American Academy of Sleep Medicine rules	Through study completion, an average of 1 year
Secondary	In-hospital mortality	The secondary endpoint is to compare the rate of in-hospital mortality between patients with acute hypercapnic respiratory failure with vs. without sleep abnormalities during the sleep study performed at the hospital measured by the odds ratio product (ORP) and the 2017 American Academy of Sleep Medicine rules	Through study completion, an average of 1 year
Secondary	HFNC effects on sleep depth according to the ORP range	In 21 patients. Time spend in different ORP ranges during the sleep study which the patients used the standard oxygen therapy and the night which the patients used HFNC.	15 hours
Secondary	Sleep depth according to the ORP during the sleep study performed at the hospital and at home	Time spend in different ORP ranges during the sleep study performed in the hospital vs. at home.	15 hours
Secondary	HFNC effects on sleep depth according to the AASM criteria	In 21 patients. Time spend in different sleep stages (AASM 2017 rules) during the sleep study which the patients used the standard oxygen therapy and the night which the patients used HFNC.	15 hours
Secondary	HFNC effects on the prevalence of sleep abnormalities	In 21 patients. The prevalence of sleep abnormalities during the sleep study which the patients used the standard oxygen therapy and the night which the patients used HFNC.	15 hours
Secondary	Sleep depth according to the AASM at the hospital vs. home	Time spend in different sleep stages (AASM 2017 rules) during the sleep study performed at the hospital vs. at patient's home.	15 hours
Secondary	Prevalence of sleep abnormalities at the hospital vs. home	The prevalence of sleep abnormalities during the sleep study performed at the hospital vs. at home.	15 hours