* covid-19 stages iv - v - vi (\*1) * hospitalization in intensive care units * pregnancy * glucose-6-phosphate dehydrogenase (g6pd) deficiency * patients who deny consent to the proposed treatment * inability to provide informed consent * contraindications to performing oxygen-ozone therapy * hyperhomocysteinemia * favism or thyroiditis * coagulopathies * neurodegenerative diseases * angina (in particular prinzmetal's angina) or with previous myocardial infarction (\*1) compliant with indications published by: italian society of anesthesia analgesia resuscitation and intensive care (siaarti). care pathway for the patient with covid-19. section 2 - recommendations for local management of the critically ill patient - version 2 available on http://www.siaarti.it/siteassets/news/covid19%20-%20documenti%20siaarti/percorso%20covid-19%20-%20sezione%202%20-%20raccomandazioni%20per%20la%20gestione%20locale%20-%20rev%202.0.pdf last accessed 20/04/2020 posted on 26.03.2020 on page 2 of the previous document : "6 identified stages: * sick disease - mild covid-19 (i stage) * light pneumonia - mild covid-19 (ii stage) * serious pneumonia - severe covid-19 (iii stage) * acute respiratory distress syndrome (ards) - critical covid-19 (iv stage) * sepsis - critical covid-19 (v stage) * septic shock - critical covid-19 (vi stage)"

* covid-19 stages iv - v - vi (\*1) * hospitalization in intensive care units * pregnancy * glucose-6-phosphate dehydrogenase (g6pd) deficiency * patients who deny consent to the proposed treatment * inability to provide informed consent * contraindications to performing oxygen-ozone therapy * hyperhomocysteinemia * favism or thyroiditis * coagulopathies * neurodegenerative diseases * angina (in particular prinzmetal's angina) or with previous myocardial infarction (\*1) compliant with indications published by: italian society of anesthesia analgesia resuscitation and intensive care (siaarti). care pathway for the patient with covid-19. section 2 - recommendations for local management of the critically ill patient - version 2 available on http://www.siaarti.it/siteassets/news/covid19%20-%20documenti%20siaarti/percorso%20covid-19%20-%20sezione%202%20-%20raccomandazioni%20per%20la%20gestione%20locale%20-%20rev%202.0.pdf last accessed 20/04/2020 posted on 26.03.2020 on page 2 of the previous document : "6 identified stages: * sick disease - mild covid-19 (i stage) * light pneumonia - mild covid-19 (ii stage) * serious pneumonia - severe covid-19 (iii stage) * acute respiratory distress syndrome (ards) - critical covid-19 (iv stage) * sepsis - critical covid-19 (v stage) * septic shock - critical covid-19 (vi stage)"

covid-19 stages iv - v - vi (*1) hospitalization in intensive care units pregnancy glucose-6-phosphate dehydrogenase (g6pd) deficiency patients who deny consent to the proposed treatment inability to provide informed consent contraindications to performing oxygen-ozone therapy hyperhomocysteinemia favism or thyroiditis coagulopathies neurodegenerative diseases angina (in particular prinzmetal's angina) or with previous myocardial infarction (*1) compliant with indications published by: italian society of anesthesia analgesia resuscitation and intensive care (siaarti). care pathway for the patient with covid-19. section 2 - recommendations for local management of the critically ill patient - version 2 available on http://www.siaarti.it/siteassets/news/covid19%20-%20documenti%20siaarti/percorso%20covid-19%20-%20sezione%202%20-%20raccomandazioni%20per%20la%20gestione%20locale%20-%20rev%202.0.pdf last accessed 20/04/2020 posted on 26.03.2020 on page 2 of the previous document : "6 identified stages: sick disease - mild covid-19 (i stage) light pneumonia - mild covid-19 (ii stage) serious pneumonia - severe covid-19 (iii stage) acute respiratory distress syndrome (ards) - critical covid-19 (iv stage) sepsis - critical covid-19 (v stage) septic shock - critical covid-19 (vi stage)"

covid-19 stages iv - v - vi (*1) hospitalization in intensive care units pregnancy glucose-6-phosphate dehydrogenase (g6pd) deficiency patients who deny consent to the proposed treatment inability to provide informed consent contraindications to performing oxygen-ozone therapy hyperhomocysteinemia favism or thyroiditis coagulopathies neurodegenerative diseases angina (in particular prinzmetal's angina) or with previous myocardial infarction (*1) compliant with indications published by: italian society of anesthesia analgesia resuscitation and intensive care (siaarti). care pathway for the patient with covid-19. section 2 - recommendations for local management of the critically ill patient - version 2 available on http://www.siaarti.it/siteassets/news/covid19%20-%20documenti%20siaarti/percorso%20covid-19%20-%20sezione%202%20-%20raccomandazioni%20per%20la%20gestione%20locale%20-%20rev%202.0.pdf last accessed 20/04/2020 posted on 26.03.2020 on page 2 of the previous document : "6 identified stages: sick disease - mild covid-19 (i stage) light pneumonia - mild covid-19 (ii stage) serious pneumonia - severe covid-19 (iii stage) acute respiratory distress syndrome (ards) - critical covid-19 (iv stage) sepsis - critical covid-19 (v stage) septic shock - critical covid-19 (vi stage)"

- covid-19 stages iv - v - vi (*1) - hospitalization in intensive care units - pregnancy - glucose-6-phosphate dehydrogenase (g6pd) deficiency - patients who deny consent to the proposed treatment - inability to provide informed consent - contraindications to performing oxygen-ozone therapy - hyperhomocysteinemia - favism or thyroiditis - coagulopathies - neurodegenerative diseases - angina (in particular prinzmetal's angina) or with previous myocardial infarction (*1) compliant with indications published by: italian society of anesthesia analgesia resuscitation and intensive care (siaarti). care pathway for the patient with covid-19. section 2 - recommendations for local management of the critically ill patient - version 2 available on http://www.siaarti.it/siteassets/news/covid19%20-%20documenti%20siaarti/percorso%20covid-19 %20-%20sezione%202%20-%20raccomandazioni%20per%20la%20gestione%20locale%20-%20rev%202.0.pdf last accessed 20/04/2020 posted on 26.03.2020 on page 2 of the previous document : "6 identified stages: - sick disease - mild covid-19 (i stage) - light pneumonia - mild covid-19 (ii stage) - serious pneumonia - severe covid-19 (iii stage) - acute respiratory distress syndrome (ards) - critical covid-19 (iv stage) - sepsis - critical covid-19 (v stage) - septic shock - critical covid-19 (vi stage)"

- covid-19 stages iv - v - vi (*1) - hospitalization in intensive care units - pregnancy - glucose-6-phosphate dehydrogenase (g6pd) deficiency - patients who deny consent to the proposed treatment - inability to provide informed consent - contraindications to performing oxygen-ozone therapy - hyperhomocysteinemia - favism or thyroiditis - coagulopathies - neurodegenerative diseases - angina (in particular prinzmetal's angina) or with previous myocardial infarction (*1) compliant with indications published by: italian society of anesthesia analgesia resuscitation and intensive care (siaarti). care pathway for the patient with covid-19. section 2 - recommendations for local management of the critically ill patient - version 2 available on http://www.siaarti.it/siteassets/news/covid19%20-%20documenti%20siaarti/percorso%20covid-19 %20-%20sezione%202%20-%20raccomandazioni%20per%20la%20gestione%20locale%20-%20rev%202.0.pdf last accessed 20/04/2020 posted on 26.03.2020 on page 2 of the previous document : "6 identified stages: - sick disease - mild covid-19 (i stage) - light pneumonia - mild covid-19 (ii stage) - serious pneumonia - severe covid-19 (iii stage) - acute respiratory distress syndrome (ards) - critical covid-19 (iv stage) - sepsis - critical covid-19 (v stage) - septic shock - critical covid-19 (vi stage)"