Ge Healthcare Technologies Inc. · NASDAQ:GEHC
Ge Healthcare Technologies — Technical Presentation (April 2020)
26 slides from Ge Healthcare Technologies's technical presentation, Apr 7, 2020
Slide 1: COVID-19 pneumonia: Time course, monitoring and treatment
COVID-19 pneumonia Time course, monitoring and treatment 2020 Luciano Gattinoni, MD, FRCP Georg-August-Universität Göttingen Germany
Slide 2: The main findings
The main findings Covid‐19 Does Not Lead to a “Typical” Acute Respiratory Distress Syndrome L. Gattinoni et al, AJRCCM 2020
Slide 3: Virus: epithelial-endothelial receptor
VIRUS Epithelial – endothelial receptor Inflammation Interstial edema Where?
Slide 4: Inflammation + focused stress
Inflammation + focused stress Peripheral densities
Slide 5: Time course of VILI development
Time course of VILI development In 40 hours Lung Inhomogeneities and Time Course of Ventilator induced Mechanical Injuries Cressoni et al, Anesthesiology 2015
Slide 6: Lung vasoplegia
Lung vasoplegia (undetermined mechanism) Nitric oxide Angiotensin I cGMP ACE2 Phosphorylated Angiotensin II myosin Vasodilation ?
Slide 7: Gravity dependent VA/Q mismatch
Gravity dependent VA/Q mismatch VA/Q mismatch
Slide 8: Hypoxemia
Undetermined Hypoxemia factors Increased respiratory drive VE – TV increase
Slide 9: Edema
Edema crodamage Venous return Hypoperfusion
Slide 10: Positive pressure respiration and treatment of pulmonary edema
Positive pressure respiration and its Acute Respiratory Failure Following application to the treatment of acute Pharmacologically Induced pulmonary edema Hyperventilation: An Experimental Animal L. Barach, Study Annals of Internal Medicine, 1938 D. Mascheroni et al, ICM, 1988 Mechanical Ventilation
Slide 11: When does the patient become dyspneic?
When does the patient become dyspneic? 1600 Normal compliance 1400 1200 Received TV (ml) 1000 800 Decreased compliance 600 400 200 200 400 600 800 1000 1200 1400 1600 Expected TV (ml)
Slide 12: 7 days spontaneously breathing
7 days spontaneously breathing O2 mask, CPAP, NIV COVID‐19 pneumonia: different respiratory treatment for different phenotypes? L. Gattinoni et al, ICM 2020 (in press)
Slide 13: Disease stage and possible interventions
Disease stage Possible interventions Pre-infection Community medicine… Virus infection Antiviral drugs… Inflammatory reaction Corticoids, anti IL-6…
Slide 14: Disease stage and possible interventions
Disease stage Possible interventions Vasoplegia NO, almitrine, CO2 … FiO2, CPAP, NIV, Prone Hypoxemia position… Respiratory drive Opioids, sedatives…
Slide 15: Progression of the disease: what can we do?
Negative pressure Viral biology: Micro/macro thrombosis, Assess and control Anticoagulation ? Progression of the disease What can we do?
Slide 16: Negative intrathoracic pressure
Negative intrathoracic pressure • Esophageal pressure • How to assess • Surface electromyography • Clinical signs • CPAP? • How to control • NIV? • Mechanical ventilation
Slide 17: Non invasive support: pro and con
Non invasive support Pro Con • Increase PaCO2 • Increase oxygenation • May not decrease effort • May decrease the Ppl swings • Right ventricular failure • Acute Kidney Injury
Slide 18: How I set the ventilator
How I set the ventilator • Mode • FiO2 Remember that it is • Tidal Volume a long lasting disease • Respiratory rate • PEEP
Slide 19: Which patient am I treating? Type L, Type H
1. Which patient am I treating? Type L Type H
Slide 20: Which patient am I treating? Type L, Type H
1. Which patient am I treating? Type L Type H • Low elastance • High elastance • Low VA/Q • High shunt • Low lung weight • High lung weight • Low recruitability • High recruitability
Slide 21: Mechanical ventilation Type L
Mechanical ventilation Type L Sedation and muscle relax • Mode: Volume Controlled Ventilation Why? • FiO2: high as needed Why? • Tidal Volume: even > than 6 ml/kg Why? • Respiratory rate: try < 20 bpm Why? • PEEP: 8-10 cmH2O Why? • Prone position: only as a rescue Why?
Slide 22: Mechanical ventilation Type L
Mechanical ventilation Type L Sedation and muscle relax In these high compliance patients (> 50 ml/cmH2O) the plateau, driving pressure and mechanical power levels are well below the “classical” severe ARDS
Slide 23: Mechanical ventilation Type H
Mechanical ventilation Type H Sedation and muscle relax • Mode: Volume Controlled Ventilation Why? • FiO2: high as needed Why? • Tidal Volume: possibly 6 ml/kg Why? • Respiratory rate: to stay < 60 mmHg PaCO2 Why? • PEEP: possibly < 15 cmH2O Why? • Prone position: daily Why?
Slide 24: Mechanical ventilation Type H
Mechanical ventilation Type H Sedation and muscle relax In these low compliance patients (< 50 ml/cmH2O) the plateau, driving pressure and mechanical power levels are the same of the “classical” severe ARDS
Slide 25: Weaning
Weaning COVID-19 pneumonia lasts long, early weaning is problematic
Slide 26: Remember
Remember 1. More than 50% do not have a “classical” ARDS 2. It’s a long course disease 3. 10 cmH2O of PEEP, sedation and especially patience is likely the best we can offer
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