Final answer:
An EMS physician needs to be present at Medical Control radio/phone in situations where important communications or medical equipment may be affected by frequencies used in communication devices, such as in hospitals or on airplanes. They ensure immediate response and coordination in case of interference or emergencies.
Step-by-step explanation:
An EMS physician needs to be present at Medical Control radio/phone in situations where important communications or medical equipment may be affected by frequencies used in communication devices. For example, in hospitals or on airplanes, where there is a high concentration of medical equipment and communication devices, it is important to have an EMS physician available to manage any potential interference or emergency situations.
In hospitals, medical equipment such as MRI machines, defibrillators, and patient monitors use radio frequencies for their operation. These frequencies can be disrupted or interfered with by signals from communication devices like mobile phones. Having an EMS physician present at Medical Control ensures immediate response and coordination in case of interference or emergencies.
Similarly, in airplanes, there are specific radio frequencies allocated for communication between the pilot, air traffic control, and Medical Control. If there is a need for medical assistance during a flight, an EMS physician can communicate with the airplane's Medical Control using approved frequency channels to provide guidance and support to the onboard medical personnel.