Use Case Diagram

11.1.1 On call - Events
Use Case Diagram Health Service Event #2 – On call evaluation Event Diagram

Actors

Patient’s mother
Physician
Clinic’s EMR system
EHRi systems

Assumptions

The physician is already logged on the clinic’s EMR system and the patient’s health profile is already displayed for the current patient; the patient’s health profile is reviewed with the patient’s mother during a phone call.
To resolve the patient’s identification, the provincial health care number is also used, because it is key information to find the patient. In this case, the physician uses the following key information to find the patient: name, birth date, and provincial health care number.
The EMR system searches and doesn’t find locally (i.e. in the local POS) the patient’s twin brother because he is a patient of another clinic, and it sends a request to EHRi system to obtain the identification information.
The resolution of the patient’s identification information is also necessary to obtain a “temporary” unique patient identifier from the EHR, to allow the user to view and update the patient’s record. The “temporary” unique patient identifier (EHRi Transaction Client ID) is provided by the EHRi only for one user session (without a break in the time), for the same patient and the same provider (person) who are engaged in the health service event. If there is an interruption during a health service, this becomes another health service event, and another resolution of the patient’s identification is required to obtain another “temporary” unique patient identifier (EHRi Transaction Client ID).
The physician wants to see all encounters in the last twelve months.
The summary list of health service encounters contains only the key identifiers of each selected (with parameters) health service encounters.
The detail of the selected health service encounter can contain many events (ex.: admission, illness history, exam, diagnosis, prescription) and sub-events.
The “health profile” is an organized collection of specific events, whose definition depends on practices of each organization and jurisdiction.

Workflow Event Step	POS Action	EHRi System Action	EHR IP reference
The physician calls the patient’s mother and reports the results of her searches.
The physician reviews, with the patient’s mother, the information in the patient’s health profile: - Birth date, - Gender, - Allergies, - Immunizations. - Medications, - Past medical history, - Family history, and particularly, that he has no history of allergy to penicillin.
The patient’s mother indicates that he did, in fact, react to Amoxil nine months prior when he had an otitis media.
View the health service encounters (in the current jurisdiction)
The physician does a request (with criteria) through her clinic’s EMR system to see all encounters in the last twelve months.	The POS EMR system sends, to the EHRi system, a search request with the criteria of all encounters in the last twelve months for the current patient (for the EHRi Transaction Client ID).	The EHRi system searches and finds all encounters in the last twelve months in current jurisdiction and for the current patient (for the EHRi Transaction Client ID).	EHRIP10 Search Patient
		The EHRi system returns, to POS system, a summary list with key identifiers indicated in the health service encounters.
	The POS EMR system displays the summary list with key identifiers indicated in the health service encounters.
The physician looks at the summary list of health service encounters and can find no record of this reaction or ear infection.
The patient’s mother asks to confirm physician is looking at patient’s chart and not that of her twin brother.
Resolution of patient’s identification (of patient’s twin brother) (in the current jurisdiction)
The physician enters the identification information of patient’s twin brother in the clinic’s EMR system.	The POS EMR system searches locally the patient and does not find (because he is a patient of another clinic in the same jurisdiction). The POS EMR system sends, to the EHRi system, a request with the key information (in this case, only the name) to search for the patient.	The EHRi system searches and finds for the client in the current jurisdiction, with the provided key information (ex. name, birth date, provincial health care number).	EHRIP10 Search Patient
		The EHRi System Client Registry returns, to POS system, the corresponding patient record (with a EHRi Transaction Client ID).
	The POS EMR system displays the corresponding record of current patient.
Consultation of the patient’s twin brother’s health profile (for the current jurisdiction)
The physician does a request through her clinic’s EMR system to review the patient’s twin brother’s health’s profile.	The POS EMR system sends, to the EHRi system, a search request to obtain the patient’s health profile for the current patient (for the EHRi Transaction Client ID) and jurisdiction.	The EHRi system searches and finds (in current jurisdiction) the information of health profile for the current patient (for the EHRi Transaction Client ID).	EHRIP09 Get Patient Health Profile
		The EHRi system returns, to POS system, the health profile for the current patient.
	The POS EMR system receives, organizes and displays the patient’s health profile.
The physician reviews the patient’s health profile and sees that the otitis media and Amoxil reaction were recorded there, for the wrong brother.

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General Info
Name	Health Service Event #2 – On call evaluation Event Diagram
Type	Use Case Diagram