found this http://www.drugnet.bizland.com/Drug_Info/overdose1.htm sight about clinicians and overdose and it talks about what to do or not do - it seems like they did most of the do not do’s -
What Not to Do
Do not wait for things to get better or for the drug to wear off - call an ambulance; better safe than sorry - this is about life and death.
Do not inject salt water - it simply doesn’t work and wastes valuable time
Do not try to give anything by mouth to someone who has overdosed (eg, tea, coffee, alcohol). Apart from not working, you may make them vomit.
If someone is unconscious, it is not recommended that you make them vomit. There is a significant risk or them inhaling their vomit and suffocating.
Do not inject amphetamines or other stimulants to try to reverse the effects of heroin. It doesn’t work and can complicate further emergency procedures.
Do not put an unconscious person in a bath - they may drown. However, if someone has overdosed on stimulants (particularly Ecstasy), and their body feels very hot, consider using water soaked cloth to cool them as the ambulance arrives.
Do not use again after being revived, particularly if Naloxone/Nacan has been used. Narcan may wear off while your first dose is still active. A further depressant drug (heroin, Valium, alcohol, etc) will likely lead to another overdose.
Do not get aggressive with ambulance officers for saving your life. You may attract the police if they feel threatened, you make it difficult for others who overdose and it’s not polite.
KE said in a later interview (not the first day) that she feared Anna had aspirated, when HKS called her and said ANS had died. “Is she dead, Howie?” So, vomitus was on KE’s mind, like it is so many others when thinking upon KE and HKS.