An Analysis Pattern for Patient Treatment

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An Analysis Pattern for Patient Treatment

• 1. Introduction
• A Patient Treatment Pattern describes the
  treatment or stay history of a patient in a
  hospital.
• The hospital may be a member of a medical
  consortium.
• Each patient has a medical history which
  contains insurance information and a record of
  all treatments within the medical consortium.
• Each patient has a primary physician, an
  employee of the hospital.
• Upon admission the patient is created as new
  or information is updated from previous visit(s).
  
• A treatment history is created for each
  patient admitted and updated throughout the
  patients stay.
• Inpatients are assigned a room, nurse team and
  consulting doctors.
• The Patient Treatment Pattern is a composite
  pattern that includes three simpler patterns.
• Patient Record
• Consortium Assets

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• 2. Patient Record
• 2.1 Intent
• This pattern describes the process of creating
  patient records for a stay or treatment in a
  hospital and managing the history of these
  records.
• 2.2 Context
• A hospital or medical consortium that keeps
  records of patient treatments.
• 2.3 Problem
• Maintaining accurate patient records is crucial
  for patient treatment.
• 2.4 Forces
• Patients may receive treatment in separate
  hospitals of the medical consortium and we need
  to keep track of all treatments in all hospitals.
• Patients receive treatment for various
  ailments in different areas of a hospital and we
  need to keep track of all treatments in all
  departments of a hospital.
• Patients may receive treatment from various
  doctors and nurses of the hospital and we need to
  keep track of all treatments by all medical
  employees.
• 2.5 Solution
• Create a unique stay or treatment history for
  every patient upon admission to the hospital.
• The treatment histories are added to the
  patient medical histories.

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2. Patient Record
Figure 1 Class Diagram for Patient Record
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2. Patient Record
ltltactorgtgt anAdmissionsClerk
ltltactorgtgt aPatient
Patient
provide information
ltltcreategtgt
MedicalHistory
ltltcreategtgt
TreatmentHistory
ltltcreategtgt
Figure 2 Sequence diagram for admit a new patient
ltltactorgtgt anAdmissionsClerk
ltltactorgtgt aPatient
Patient
MedicalHistory
provide information
open
open
TreatmentHistory
ltltcreategtgt
Figure 3 Sequence diagram for admit a patient
(not new)
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5. Patient Record
Figure 10 State Chart Diagram Medical History
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5. Patient Record
Figure 11 State chart Diagram Treatment(Stay)
History
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• 2. Patient Record
• 2.6 Consequences
• Advantages
• Each treatment or stay history is summarized
  into one record.
• Each stay history is added to a patient
  medical history.
• Each medical history provides information
  about the patient for future treatments within
  the medical consortium.
• Role based access control can be used to
  protect the privacy of a patient.
• Disadvantages
• Policies about the size of a treatment history
  need to be established, if a patient receives
  treatment in too many departments by multiple
  doctors and nurses during one stay, it may need
  to be broken down into separate treatments.
• The accuracy of patient records will depend
  upon the employees of the medical group.
• 2.7 Known Uses
• Every hospital or clinic maintains records
  about their patients.
• For example if a patient visits West Boca
  Medical Center for the third time there will be a
  record of previous visits.
• 2.8 Related Patterns
• Collection Pattern

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• 3. Consortium Assets
• 3.1 Intent
• To manage the hospitals, buildings and employees
  and equipment of a medical consortium.
• 3.2 Context
• A medical consortium that has multiple hospitals
  with buildings and rooms, medical equipment and
  employees.
• 3.3 Problem
• Management of assets is crucial for efficient and
  professional service.
• 3.4 Forces
• In a medical consortium if employees or
  employee information changes this information
  needs to be recorded.
• All hospitals of a medical consortium consist
  of buildings with rooms and the information about
  availability and use of these assets must be
  recorded and kept up to date.
• We need to keep track of the use, stock,
  transfer and information about all medical
  equipment used by any hospital within the medical
  consortium.
• 3.5 Solution
• Maintain employee records with basic
  information and separate employees by their
  profession to add specific information,
  specialties and rights.
• Each hospital is a separate asset of the
  consortium. Each building is an asset of the
  hospital. Each room is an asset of the building.
  This way all the information can be easily kept
  up to date.

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3. Consortium Assets
Figure 4 Class Diagram for Consortium Assets
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4. Asset Assignment 4.1 Intent To assign
doctors, nurses and rooms to a patient for
treatment 4.2 Context A hospital or medical
consortium that assigns doctors, nurses and rooms
to patients. 4.3 Problem How does the hospital
keep track of which doctors, nurses and rooms are
assigned to the patients.
Figure 5 Class Diagram for Asset Assignment
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4. Asset Assignment
ltltactorgtgt anAdmissionsClerk
ltltactorgtgt aPatient
ltltactorgtgt aDoctor
provide information
Patient
ltltcreategtgt
MedicalHistory
ltltcreategtgt
TreatmentHistory
ltltcreategtgt
assign
Figure 6 Sequence diagram for admit a new
patient and assign doctor
ltltactorgtgt anAdmissions clerk
Building
Doctor
Room
Nurse
ltltactorgtgt aDoctor
assign
check availability
assign
assign
assign
Figure 7 Sequence diagram for admit an inpatient
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• 5. Patient Treatment
• 5.1 Intent
• This pattern describes the process of admitting
  and treating a patient in a hospital.
• 5.2 Context
• A medical facility that offers patient treatment.
• 5.3 Problem
• To provide patients with necessary services the
  combination of patient records, medical
  consortium assets and assignment of patients to
  these assets needs to be organized, maintained
  and and managed efficiently.
• 5.4 Forces
• In addition to the forces of component patterns
  we also have
• A patient may be moved or reassigned during a
  stay and we need to document the new assignment
  and location.
• After the patient is discharged all
  assignments need to be released and the records
  updated.
• Patients may discontinue treatment for various
  reasons and all information needs to be recorded.
• 5.5 Solution

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5. Patient Treatment
Figure 8 Class Diagram for Patient Treatment
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• 5. patient treatment
• 5.6 Consequences
• Advantages
• All information about a patients stay is
  recorded and documented even if there are
  reassignments during that stay.
• When a patient is discharged the treatment
  history is added to the medical history and all
  treatments within the medical consortium will be
  kept for future reference.
• If a patient discontinues treatment for any
  reason this information will be on record.
• Role based access control can be used to
  protect the privacy of a patient.
• Disadvantages
• The accuracy of patient treatment, assignment
  and record updates are dependent upon the
  employees maintaining and recording information.
• Employees need to follow procedure.
• 5.8 Related Patterns
• Repair Pattern A patient enters a hospital for
  repair, assignment is made for the repair and a
  record is kept.
• Future Work
• Defining the Role Rights and adding
  authorization to the Patient Treatment Pattern.
• Generalizing the pattern for other
  applications such as student, prison, or repair.

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Class Diagram for Patient Treatment with
Authorization
Consortium
name patient number
Patient
name main location
create update

Hospital

name address

Inpatient

Outpatient
specialty

name ss number address
Employee
MedicalHistory
insurance treatment history
1
TreatmentHistory medications procedures

update

Nurse
specialty
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Patient TreatmentAdmit a Patient with
Authorization
Observer
Model

AdmitPatientView

AdmitPatientController
- name - address - patient number
Patient
- newPatient - openPatient - patientNumber -
patientInformation - treatmentHistory -
medicalHistory - inpatient - outpatient
handleEvent( )
create(patient info) update(patient info)
close( )
update( ) admit_patient()


Inpatient

Outpatient
- specialty
Admit a Patient
New Patient
Patient Number
- insurance - treatmentHistory
MedicalHistory
Open Patient
Patient Information
TreatmentHistory
Create Treatment History
1

- medications - procedures
open ( ) create( ) update ( ) close ( )
Medical History
create ( ) update ( ) close ( )
Outpatient
Inpatient
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Patient TreatmentAdmit an Inpatient with
Authorization
Model
Observer
- name - address - patient number
Patient

AdmitInpatientView

AdmitInpatientController
create(patient info) update(patient info)
close( )

Inpatient
- patientNumber - patientInfo - room -
nurseTeam -consultingDoctor
handleEvent ( )
assigned to
assigned to consulting
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assigned to
- insurance - treatmentHistory
MedicalHistory
update ( ) admit_inpatient
0
1

Room

Doctor
open ( ) create( ) update ( ) close ( )
- number - size
- specialty

Nurse
assign ( ) remove ( )
assign ( ) remove ( )
- specialty
Admit an Inpatient
assign ( ) remove ( )


TreatmentHistory
Room
Patient Number
Hospital
Building
- medications - procedures
- name - address
Patient Information
- name - location
Nurse Team

create ( ) update ( ) close ( )
addDepartment addBuilding ( )
activateRoom ( ) deleteRoom ( )
Consulting Doctor
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Patient TreatmentDischarge a Patient with
Authorization
Model
Observer
- name - address - patient number
Patient

Inpatient
create(patient info) update(patient info)
close( )

DischargePatientView

DischargePatientController
- patientNumber - patientInfo - room -
nurseTeam -consultingDoctor
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assigned to
assigned to
assigned to consulting
handleEvent ( )
- insurance - treatmentHistory
MedicalHistory
1
0
Room
update ( )

Doctor
- number - size
open ( ) create( ) update ( ) close ( )
- specialty


Nurse
assign ( ) remove ( )
assign ( ) remove ( )
- specialty
Discharge a Patient
assign ( ) remove ( )
Patient Number

Room
TreatmentHistory
Patient Information
Nurse Team
- medications - procedures
Consulting Doctor
create ( ) update ( ) close ( )
Treatment History
Medical History
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