Use Case Diagram

8.1.1 Birth of the Twins - Events
Use Case Diagram Health Service Event #4 - Complete obstetrical record Event Diagram

Actors

Obstetrical nurse
Hospital’s EMR system (POS)
EHRi systems

Assumptions

The obstetrical nurse uses an EMR system and is already logged on this system.
The hospital’s ADT system is interfaced with the hospital’s EMR system. So, when a patient is created/updated in the hospital’s ADT system, the patient index is automatically updated in the hospital’s EMR system.
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 obstetrical nurse uses the following key information to find the patient: name, birth date, and provincial health care number.
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 record of obstetrical events is added in the mother and newborns’ EMR.

Workflow Event Step	POS Action	EHRi System Action	EHR IP reference
Resolution of patient’s identification (in the current jurisdiction)
The obstetrical nurse enters the patient’s identification information, in the hospital’s EMR system, for the mother and her twin.	The POS EMR system searches and finds locally the identification of patients (mother and twins). The POS EMR system sends, to the EHRi system, a request with the key information (ex. name, birth date, provincial health care number) (and to obtain a EHRi Transaction Client IDs for mother and twins).	The EHRi system searches the clients, in the current jurisdiction, with the provided key information (ex. name, birth date, provincial health care number) and finds the clients (mother and twins).	EHRIP10 Search Patient
		The EHRi System Client Registry returns, to POS system, a list with corresponding patients (with a EHRi Transaction Client IDs).
	The POS EMR system displays the list with corresponding patients.
Record obstetrical events (in the current jurisdiction)
The obstetrical nurse completes, in the hospital’s EMR system, her record of the events, which is added to the mother and babies EMR. - Labour stage times, - Type of delivery, - Procedures, - Medications, - Time of birth, - Gender baby, - APGAR scores.	The POS EMR system is updated with the obstetrical events. The POS EMR system sends, to the EHRi system, an update request to add the obstetrical events with respective information for each patient’s record (for the EHRi Transaction Client IDs).	The EHRi system adds the obstetrical events with respective information for each patient’s record. (for the EHRi Transaction Client IDs).	EHRIP15 Put Event
		The EHRi system returns, to POS system, an acknowledgment that the update request is completed.
	The POS EMR system displays an acknowledgment about the completed update request.

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General Info
Name	Health Service Event #4 - Complete obstetrical record Event Diagram
Type	Use Case Diagram