Evaluation of Serratus Plane Block on the Respiratory Pattern in Patients With Multiple Rib Fractures

Study Overview
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Brief Summary
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In patients admitted following a trauma, the incidence of multiple rib fractures is reported to be 9,7%, and this can be even higher in high energy trauma like motor vehicle accidents (1). Pain deriving from rib fractures cause the patient to breath shallow in order to limit discomfort and this bring about negative consequences: shallow breathing and inability to clear secretions may cause pulmonary atelectasis eventually evolving to pneumonia. Given the aforementioned concerns, it is easy to understand why, in a context like this, control of chest pain become crucial. The best way to achieve adequate pain control have not yet been established: the aim of this study is to investigate on this clinical dilemma. In this study, 72 people with at least two monolateral rib fractures are going to be randomized into three groups: 1) standard treatment alone (intravenous analgesia: acetaminophen + morphine PCA); 2) continuous serratus plane block + standard treatment; 3) single-shot serratus plane block + standard treatment. The variables that are going to be recorded are the following: pain through the NRS scale, FEV1 and FVC through spirometry and finally an arterious gas analysis. Recording are going to be repeated at 72h after admission. The primary endpoint is to evaluate if the continuous serratus plane block is able to improve the FEV1/FVC compared to single shot or standard treatment alone. Secondary endpoints will be: the effect of continuous block on 1) resting and incident pain; 2) opioid consumption; 3) blood gas analysis parameters; 4) pulmonary complications at 1 month; 5) length of stay

Official Title
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Evaluation of Serratus Plane Block on the Respiratory Pattern in Patients With Multiple Rib Fractures: a Perspective Randomized Controlled Study

Conditions
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Rib Fractures, Spirometry

Intervention / Treatment
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* Procedure: Serratus plane block (continuous or single-shot)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Chest trauma with at least 2 monolateral rib fractures (monofocal or multifocal) with no flail chest Age>18 years Hospital admission Ability to provide written informed consensus Awake patient, spontaneous ventilation
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: Morphine<br> | |
| Active Comparator: Continuous<br> | Procedure: Serratus plane block (continuous or single-shot)<br>* Patients assigned to the interventional arms will receive either continuous serratus plane block or single-shot serratus plane block<br>|
| Active Comparator: Single<br> | Procedure: Serratus plane block (continuous or single-shot)<br>* Patients assigned to the interventional arms will receive either continuous serratus plane block or single-shot serratus plane block<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| FEV1 (% of the predicted value) | Any statistically significant difference between the two treatment groups and the control group will be measured. FEV1 is expected to be respectively 80±15% of the predicted value in the treatment groups and 64±15% of the predicted value in the control group | 72 hours |