topic Re: FlexSim HC preempt in FlexSim Forum

FlexSim HC preempt

omar_aguilera_rico — Thu, 08 Feb 2018 18:07:10 GMT

[ FlexSim HC 5.3.4 ]

problema.fsm Hello everyone. I have encountered a problem in HC where I am simulating the arrival of emergency patients, where when assigning in Track2 it stabilizes a higher priority than that of EKG and abandonment. It happens that when another emergency patient arrives, as the priority is higher than the one being executed, the nurse leaves the EKG action of the patient who was attending, to go to stabilize the new patient, but what happens is the nurse leaves the hospital. EKG activity of the first patient and does not resume the activity where he stayed, this I can do in premmtion but in the activity of Stabiliza does not throw me that option, how can I solve this? Like I have the following problem that the patient has reserved the gurney and the technician goes by the stretcher without respecting that a patient belongs to him, how can I solve that? Regards!

Re: FlexSim HC preempt

cliff_king — Fri, 09 Feb 2018 19:09:29 GMT

If I understand your objective, I think the answer is to simply change the priority of the EKG and Departure activities to 300, matching the Stabilize activity. Try it and let me know if things start working the way you expect.

Re: FlexSim HC preempt

omar_aguilera_rico — Fri, 09 Feb 2018 19:29:05 GMT

I understand what you tell me, but it's not like that. I'll give an example, a person arrives at the emergency room who suffered an accident where he needs a leg seam, but in two minutes a patient with a bullet wound arrives who needs to be treated by the emergency department that is attending the leg seam, to address to only stabilize the patient with a bullet wound. So my stabilization activity has a higher priority than the others. So what should happen is that after stabilizing the bullet wound, return to continue attending the sewing leg. It does not work that way, what they do is they abandon the leg seam for helping the bullet wound and they do not return to continue with their activities that they stopped. Then he is looking for the option of preemtion so that when they come to the patient with a bullet wound after stabilizing, they will resume the activities where they stayed. Any idea how I can solve this? Actually the above represents the reality of a hospital. Thanks for the support!

Re: FlexSim HC preempt

cliff_king — Fri, 09 Feb 2018 19:52:49 GMT

OK, I have a few more questions to fully understand what should happen.

Can stabilize activities preempt stabilize activities for other patients depending on severity of the two or more patients involved? I have the same question as to whether the EKG and/or Departure activities for an "emergency" patient can preempt similar activities for other emergency patients depending on the severity of the patients involved.

In your example of the "leg seam" patient (PtA) and the "bullet" patient (PtA), I'm assuming you are considering both an "emergency" type patient. Is that correct? If so, then what activity is the PtA in when PtB arrives? If you are wanting to treat "emergency" patients differently depending upon the severity of their emergency, then it seems to me that you will need to categorize your patients into more levels than just "regular" and "emergency" patients, and make decisions within your tracks to handle the differences.

To keep it simple for now, let's assume you stick with just the two tracks you've defined already and you are in the middle of caring for PtA when PtB arrives per your example above. Tell me what you would like to have happen to both PtA and PtB from their arrival all the way to their departures for each of the following two scenarios: 1) PtA is in the middle of its Stabilize activity when PtB arrives, 2) PtA is in the middle of its EKG activity when PtB arrives.

Re: FlexSim HC preempt

omar_aguilera_rico — Fri, 09 Feb 2018 19:53:23 GMT

On the other hand I found a bug, when selecting the process time of a track activity with reference to a Global Table it does not write the quotes. For example, you must type gettablevalue ("GlobalTable1", 1, 1) and what happens is that you type in automatic gettablevalue (GlobalTable1, 1, 1).

Re: FlexSim HC preempt

omar_aguilera_rico — Fri, 09 Feb 2018 20:04:19 GMT

2) PtA is in the middle of its EKG activity when PtB arrives. I already had another idea, so when I assign an emergency patient, should their activities have the same priority?

Re: FlexSim HC preempt

cliff_king — Fri, 09 Feb 2018 20:45:35 GMT

Please stick to the original problem until solved, or I will get really confused. I'm still waiting for a full description of what you want to have happen for PtA and PtB from arrival to discharge for the two scenarios I mentioned.

As for the gettablevalue() command, you may use either "GlobalTable1" or GlobalTable1 for the first parameter. In HC all global tables can be referenced with just their name (no need for quotes) because global tables have a global variable created with the same name as the table for quick easy referencing.

Re: FlexSim HC preempt

omar_aguilera_rico — Fri, 09 Feb 2018 20:52:52 GMT

Very good, is that as I use more FlexSim than FlexSim HC and in the first one I need the quotes I thought it was a bug.

Re: FlexSim HC preempt

omar_aguilera_rico — Fri, 09 Feb 2018 22:15:33 GMT

What I did best was to classify my emergency patients by grade level. In the model that annex represents two Track for two levels in which if they stop attending PA for attending PB, what they do is to return later to continue the tasks where the AP remained. I think that is an alternative for what I seek to represent. urgencias-abandona-a-atender-a-pb-despues-regresar.fsm

Re: FlexSim HC preempt

omar_aguilera_rico — Tue, 13 Feb 2018 20:35:02 GMT

@Cliff King Hello, attach a model where I am realizing that what happens is that the nurse takes the EKG that has the PA to attend the PB, when the PB is finished attending the nurse returns with the PA but without the EKG so that does the EKG process without him, to what is this due? muestra.fsm

Re: FlexSim HC preempt

cliff_king — Tue, 13 Feb 2018 23:10:23 GMT

Activity 50_Examen de EKG for PA is a "Move Equipment > Process" activity that is composed of retrieving the EKG, carry it to PA, drop it off, then begin the process phase of the activity. It's during the process phase, that PA is preempted by PB, so when PB is finished and activity 50_Examen de EKG can resume on PA, the remaining process time is resumed on the patient and the EKG will be allocated to PA once again and set in a utilized state, but because the equipment has no knowledge of it being moved to a different location, it will remain where it is. There's nothing you can do about that (at least nothing you would want to try), but the stats for utilization should still be valid.