A Clinical Study on Levosimendan Improvement of Prognosis of ARDS Patients by Optimizing Pulmonary Hemodynamics

Study Overview
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Brief Summary
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The purpose of this study was to evaluate the curative effect of Levosimendan on ARDS patients through omni-directional and multi-angle objective quantitative indexes, and to study the responsiveness of ARDS with or without right ventricular insufficiency to the treatment of Levosimendan, and to indirectly confirm whether Levosimendan had lung protective mechanism other than calcium sensitization to ARDS patients, such as inhibiting inflammatory reaction to reduce pulmonary capillary leakage and alveolar epithelial cell injury. Relaxation of bronchial smooth muscle improves pulmonary ventilation function. To provide new methods and ideas for clinical treatment of ARDS.

Detailed Description
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On the basis of the above research, the investigators speculate that Levosimendan can improve cardiac function, enhance diaphragm contractility and decrease pulmonary artery through this sensitizing effect, and protect ARDS lung function by regulating the release and oxidation of inflammatory mediators and nitroso oxidative stress. The hemodynamic and pulmonary protective effects of ARDS patients were improved by regulating K-ATP channels, relieving blood vessels and bronchospasm and improving ventilation and diffusion function in ARDS patients, so as to further improve the survival rate of these patients and shorten the mechanical ventilation time and ICU stay time. The purpose of this study was to observe the effect of Levosimendan on pulmonary circulation and right ventricular function in patients with ARDS, to determine whether it can reduce the fatality rate of ARDS and shorten its ICU residence time, and to evaluate the evaluation of ARDS with or without right ventricular insufficiency and to provide a new idea and method for drug treatment of ARDS.

Official Title
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A Clinical Study on Levosimendan Improvement of Prognosis of ARDS Patients by Optimizing Pulmonary Hemodynamics

Conditions
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ARDS, Human

Intervention / Treatment
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* Drug: Levosimendan


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Clinical diagnosis of ARDS; joined this study with informed consents Exclusion Criteria: neurological and muscle diseases; Chronic severe liver and kidney failure; advanced malignant tumor; Primary left ventricular insufficiency;
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
Intervention Model: Single Group Assignment
Interventional Model Description: Levosimendan group: on the basis of routine group treatment, 12.5 mg of levosimendan 5% s50ml was given on the same day, and the micro-pump was continuously pumped for 24 hours. The initial dose was 0.5 ml/ h, and if the blood pressure was not significantly decreased, the blood pressure was gradually increased to 2.4 ml/ h at the maximum dose, until the pump was over.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Routine treatment<br>Routine treatment group: control infection, remove or control the primary disease; mechanical ventilation with low tidal volume and high PEEP mechanical ventilation strategy; strictly control volume, strengthen airway management, timely nutritional support and severe rehabilitation treatment. | Drug: Levosimendan<br>* General treatment group: control the infection, remove or control the original disease, mechanical ventilation, small tidal volume, high PEEP mechanical ventilation strategy, strictly control the capacity, strengthen the airway management, timely nutrition support and intensive rehabilitation treatment. Levosimendan group: on the basis of routine group treatment, 12.5 mg of levosimendan 5% GS 50ml was given on the same day, and the micro-pump was continuously pumped for 24 hours. The initial dose was 0.5 ml/ h, and if the blood pressure was not significantly decreased, the blood pressure was gradually increased to 2.4 ml/ h at the maximum dose, until the pump was over. The above treatment is repeated every 7 days until the offline success or the patient leaves the ICU.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| APACHE II score | The lowest value in the first 24 hours after entering ICU. The total score is 0 71 points. The higher the score, the more serious the disease | Admission for 24 hours | 
| SOFA score | The total score is 0 48 points. The higher the score, the more serious the disease | Admission for 7 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mechanical ventilation time | how long did the patient stay in ICU | From admission to 30 days | 
| mecical expense | how much did the patient cost. | From admission to 30 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Levosimendan