4 ms·

I know nothing about this field, however when I looked up "invasive mechanical ventilation" Wikipedia told me: "Mechanical ventilation is termed "invasive" if i

I know nothing about this field, however when I looked up "invasive mechanical ventilation" Wikipedia told me: "Mechanical ventilation is termed "invasive" if it involves any instrument inside the trachea through the mouth, such as an endotracheal tube or the skin, such as a tracheostomy tube. Face or nasal masks are used for non-invasive ventilation in appropriately selected conscious patients. [https://en.wikipedia.org/wiki/Mechanical_ventilation https://en.wikipedia.org/wiki/Mechanical_ventilation] The device is pictured here https://pbs.twimg.com/media/ES5Skn-X0AAkn3j?format=jpg https://pbs.twimg.com/media/ES5Skn-X0AAkn3j?format=jpg, according to another comment, and it has a "Face or nasal mask" and is therefore non-invasive. The gloomy death rate cited in the Lancet article not be relevant to this machine and it might be a genuine lifesaver in the care of COVID-19 patients.

Engineering-MD 7y ago
I would say that your definition is a little too strict. There are devices which rest on the top of the larynx (Laryngeal Mask Airway or LMA). These devices are not within the trachea but can only be used in those under a general anaesthetic and such are usually involved in the category invasive. In essence, the main difference is invasive requires sedation (or the patient has a tracheostomy which is a bit of a edge case)
- totalZero 7y ago
  A "face or nasal mask" wouldn't be invasive by your definition, either.
rckoepke 7y ago
https://pastebin.com/BE2aTQJ4 https://pastebin.com/BE2aTQJ4 Seattle-area ICU doctor gives the impression that if a patient needs non-invasive assistance, that implies they will quickly need invasive assistance: > given the inevitable rapid progression to ETT once resp decompensation begins, we and other hosps, including Wuhan, are doing early intubation. Facemask is fine, but if needing HFNC or NPPV just tube them. They definitely will need a tube anyway, & no point risking the aerosols.

Engineering-MD 7y ago

I would say that your definition is a little too strict. There are devices which rest on the top of the larynx (Laryngeal Mask Airway or LMA). These devices are not within the trachea but can only be used in those under a general anaesthetic and such are usually involved in the category invasive. In essence, the main difference is invasive requires sedation (or the patient has a tracheostomy which is a bit of a edge case)

totalZero 7y ago
A "face or nasal mask" wouldn't be invasive by your definition, either.

rckoepke 7y ago

https://pastebin.com/BE2aTQJ4 https://pastebin.com/BE2aTQJ4 Seattle-area ICU doctor gives the impression that if a patient needs non-invasive assistance, that implies they will quickly need invasive assistance: > given the inevitable rapid progression to ETT once resp decompensation begins, we and other hosps, including Wuhan, are doing early intubation. Facemask is fine, but if needing HFNC or NPPV just tube them. They definitely will need a tube anyway, & no point risking the aerosols.