Clinical trial NCT04996394: "Effects of Neuromuscular Blocking Agents on End Expiratory Lung Volume During Moderate-severe ARDS"
Official title: Effects of Neuromuscular Blocking Agents on End Expiratory Lung Volume During Moderate-severe ARDS
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: ARDS
Neuromuscular Blockade
Lead sponsor: University of Milano Bicocca
Sponsor class: OTHER
First posted: 2021-08-09
Enrollment: 15
Sex: ALL
Minimum age (years): 18
Maximum age (years): 90
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Patients with moderate-severe ARDS (according to Berlin definition) needing NMBAs administration will be included

Brief summary: This is a monocentric, prospective, observational study that will be conducted in the general ICU of San Gerardo Hospital (Monza, Italy). Study protocol will be started when NMBAs infusion will be stopped for clinical reason until regain of spontaneous breathing activity.

Patients will be enrolled at the moment of NMBAs infusion interruption ("baseline" phase). Clinical data will be collected: hemodynamics, ventilation parameters and respiratory mechanics, arterial blood gas analysis, drugs used for sedation and their dosages. An EIT belt will be positioned around the patient's chest when clinical signs of spontaneous breathing activity will be detectable (unstable flow curve on the ventilator, deflection in airway pressure during an expiratory pause). In this phase ("NMBA interruption") same clinical data will be collected as at baseline. Patients will be ventilated in the same ventilation mode as before (Volume Controlled mechanical ventilation), but the inspiratory trigger on the ventilator will be turned on to reduce patient-ventilator asynchronies. When an EIT trace lasting at least 10 minutes will be recorded, an NMBA bolus (as prescribed by the treating physician) will be administered and a continuous infusion will be restarted. Clinical data will be collected again in this phase ("NMBA restart").


Eligibility criteria: Inclusion Criteria:

* Patients with moderate-severe ARDS (according to Berlin definition)
* Patients treated with NMBAs
* age\>18 years old

Exclusion Criteria:

* pregnancy,
* presence of air leaks (ex. presence of broncho-pleural fistula or pneumothorax)
* presence of contraindications to EIT belt positioning ( ex. presence of pace-makers, presence of unstable spinal fractures).

Primary outcomes:
measure: End Expiratory Lung Volume
timeFrame: Entire study duration (approx. 1 year)
Secondary outcomes:
Other outcomes:
Locations:
city: Monza
country: Italy
facility: ASST Monza
state: Lombardia
Study officials:
References:
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citation: Fanelli V, Morita Y, Cappello P, Ghazarian M, Sugumar B, Delsedime L, Batt J, Ranieri VM, Zhang H, Slutsky AS. Neuromuscular Blocking Agent Cisatracurium Attenuates Lung Injury by Inhibition of Nicotinic Acetylcholine Receptor-alpha1. Anesthesiology. 2016 Jan;124(1):132-40. doi: 10.1097/ALN.0000000000000907.
citation: Forel JM, Roch A, Marin V, Michelet P, Demory D, Blache JL, Perrin G, Gainnier M, Bongrand P, Papazian L. Neuromuscular blocking agents decrease inflammatory response in patients presenting with acute respiratory distress syndrome. Crit Care Med. 2006 Nov;34(11):2749-57. doi: 10.1097/01.CCM.0000239435.87433.0D.
citation: Yoshida T, Uchiyama A, Matsuura N, Mashimo T, Fujino Y. The comparison of spontaneous breathing and muscle paralysis in two different severities of experimental lung injury. Crit Care Med. 2013 Feb;41(2):536-45. doi: 10.1097/CCM.0b013e3182711972.
citation: Guervilly C, Bisbal M, Forel JM, Mechati M, Lehingue S, Bourenne J, Perrin G, Rambaud R, Adda M, Hraiech S, Marchi E, Roch A, Gainnier M, Papazian L. Effects of neuromuscular blockers on transpulmonary pressures in moderate to severe acute respiratory distress syndrome. Intensive Care Med. 2017 Mar;43(3):408-418. doi: 10.1007/s00134-016-4653-4. Epub 2016 Dec 24.