Region II Communication System
What is CMED?
CMED (Central Medical Emergency Direction) relies on a network of radio
towers set up strategically throughout Central Massachusetts (EMS Region II).
Through these towers (see map) an ambulance can contact CMED via radio and request entry
notification to a hospital of destination. This provides physician access and
ensures that the emergency department is aware of the patient’s pending arrival.
CMED also plays an important role in coordinating EMS response to Mass Casualty
Incidents and patient distribution from the scene to the hospital. CMED is
crucial to the coordination of communications between ambulances and hospitals
and ultimately contributes to optimal patient care.Region II CMED Operations
Continuing Education Program (2hr OEMS approved)
Program
Description:
EMTs of all levels will gain
insight into the operations of EMS Region II Central Medical Emergency
Direction (CMED). EMTs will learn how to provide clear and concise entry
notifications in order to improve the regional communications system and
understand the resources available to them through CMED. A review of Mass
Casualty Incident (MCI) procedures associated with CMED communications will
also be covered. This program is grant funded and can be
provided at CMED (Holden) or at your Region II classroom location.
Objectives:
The EMT will:
o
State the purpose and function of CMED
o
Explain the purpose of an entry notification and
its key elements
o
Compare and contrast an entry notification with a
verbal report
o
Explain the role of the EMT first on scene at an
MCI
o
Explain the role of CMED during an MCI
Contact:
Andrew Giourelis, CMED Supervisor at
agiourelis@cmemsc.org to schedule this course for your service.
Visit CMED Operations
Visit CMED, learn about the operations of the communication center and earn two
hours of OEMS approved continuing education credit FREE!
Call 508-854-0111 to schedule a mutually convenient time.
Technical design
The Central Massachusetts EMS communications system consists of radio base
stations (towers) and dedicated telephone lines controlled by computer operated
consoles at the CMED operations facility. This system was designed to provide
communications over a wide and varied geographic region while minimizing radio
frequency congestion.
A standard ambulance radio and antenna operating on the UHF/VHF medical
channels can access the system within the entire region with adequate
communications quality. It's important to know the design limits of the system,
and use appropriate equipment with the system in order to ensure satisfactory
communications.
| Channels |
Receive
Freq. |
Transmit
Freq. |
Region
Private
Line |
State
Private
Line |
| MED 1 |
463.0000 |
468.0000 |
186.2 |
192.8 |
| MED 2 |
463.0250 |
468.0250 |
186.2 |
192.8 |
| MED 3 |
463.0500 |
468.0500 |
186.2 |
192.8 |
| MED 4 |
463.0750 |
468.0750 |
186.2 |
192.8 |
| MED 5 |
463.1000 |
468.1000 |
186.2 |
192.8 |
| MED 6 |
463.1250 |
468.1250 |
186.2 |
192.8 |
| MED 7 |
463.1500 |
468.1500 |
186.2 |
192.8 |
| MED 8 |
463.1750 |
468.1750 |
186.2 |
192.8 |
| MED 9 |
462.9500 |
467.9500 |
186.2 |
192.8 |
| MED 10 |
462.9750 |
467.9750 |
186.2 |
192.8 |
The CMED Operator
The CMED console is controlled by EMT operators who are responsible for
professional and accurate coordination of medical communications in the Region.
They record data for call tracking, database and quality assurance purposes. In
a multiple agency response situation or a disaster, the CMED operator is a
critical link in the communications chain, facilitating interagency and regional
communications.
Entry Notifications
No emergency patient should arrive by ambulance at a hospital without
notification through CMED. Entry notifications should be early and brief,
indicating an estimated time of arrival (ETA), the patient’s age, sex and chief
complaint. Only essential information needed for appropriate patient preparation
should be relayed. A full patient report should be given to staff upon transfer
of patient care at the hospital.
Medical Direction
On-line Medical Direction refers to direct radio or telephone communication
with a medical control physician for patient management consultation. EMTs at
all levels may request CMED facilitated medical control when indicated per
protocol or when medical advice is needed. Medical control contact must be
documented on the patient care report and the physician's signature must be
obtained.
Responsibilities of EMS Providers
- The proper use of communications equipment is essential to effective system
operation.
- EMTs have an obligation to understand the regional EMS system.
- They
are also encouraged to contribute to the success and advancement of the system.
Participation in regional committees and suggestions as to how to improve
patient care is second only to the delivery of patient care.
- Once medical
control and direction has been established with an appropriate physician, the EMT
may request a change in medical control only if technical difficulties
prohibit further contact with that physician.
- Questions about medical control on a specific call should first be
discussed privately with the physician involved. EMTs may also wish to
consult their own service medical director.
- Unresolved issues may be directed to the regional medical director.
Responsibilities of Hospital Personnel
Hospital personnel who utilize the CMED system have an obligation to
understand the EMS system and the skills and capabilities of the EMTs with whom
they are communicating. Medical orders must be given directly by a physician who
is identified as the medical control physician. All physicians providing medical
direction should receive formal training in radio communications from the
hospital, including the importance of concise, confidential transmissions.
Medical Control Physicians are expected to have thorough knowledge of the most
current Massachusetts Pre-Hospital Treatment Protocols and be willing to
participate in case reviews.
Communication Failure
An ALS provider may initiate or continue care in accordance with protocols if
communications are interrupted or cannot be established with medical control.
The physician receiving the patient shall evaluate the emergency care rendered
with comment on the ALS patient care report. The ALS provider shall prepare a
written report of the incident including patient care provided and submit it to
the Regional Medical Director within 72 hours for review.
Priority Call Guidelines
PRIORITY ONE (Immediate Life Threatening)
| Cardiac Arrest |
Acute Pulmonary Edema |
| Unstable Cardiac |
Respiratory Arrest |
| Major Head Injuries |
Airway Obstruction |
| Multiple Trauma |
Anaphylaxis |
| Unstable GI Bleed |
|
PRIORITY TWO (Life Threatening)
| Suspected Cardiac |
Unstable Medical (e.g., hypoglycemia) |
| CVA |
Symptomatic Cervical Injuries |
| Coma (unknown etiology) |
Suspected Fractures/Dislocations of Joints |
| Unstable Trauma |
|
PRIORITY THREE (Non-Life Threatening)
Stable trauma
Minor Lacerations and Soft Tissue Injuries
Suspected Minor Fracture without Circulatory or Nervous
System Compromise
Other Non-Acute Medical Complaints
PRIORITY FOUR (Stable)
Interagency Transfers
Direct Admissions
Tower Map

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