USCOM 1A and Corona Virus, page-7

uktion,
Bloods would give a diagnosis but it would be fair to say that most febrile (fever) patients presenting ill with symptoms of flu can be diagnosed without bloods. The big issue is the need to sort patients into: those who will speedily recover and those might die. For this you need something more than the deliberations of a RN (which I take to mean Registered Nurse).
Coronavirus produces a pneumonia or chest infection which ultimately results in impaired cardiovascular function, which is how some infected patients die. Poor cardiovascular function indicates impending death which needs urgent management. To manage cardiovascular function you need to administer fluids, inotropes and vasoactives, and the most accurate method to select and monitor the effectiveness of this therapy is USCOM 1A. There are currently about 600 peer reviewed publications covering the use and benifits of the USCOM 1A, many of which are in sepsis and septic shock.
I should also note here that the National Health Committee for Diagnosis and Treatment of Coronavirus Pneumonia propose haemodynamic monitoring as a standard of care for 2019-nCoV. (the virus infection). From a practical point of view, at this time, there are just not enough USCOM 1A devices to go round and having access to one, can for seriously ill patients, make the difference between living and dying.

Further to your question on using the 1A device:

The USCOM 1A is non invasive and a measurement can be performed in about 5 minutes, and then the device moved on to another patient. Most other devices in this field are fixed to the patient, so need one device per patient.

Summaryof USCOM 1A features:

USCOM1A accurately and noninvasively measures haemodynamics.

USCOM1A can monitor multiple patients rapidly taking ~5minutes per examination andisn’t affixed to a single patient.

USCOM1A can be used in neonates, children, adults and the elderly.

USCOM1A can be operated by clinicians, nurses or technicians.

I hope this helps