Pacemaker codes are short hand that describes the functioning and programmable features of a pacemaker. They are a series of up to five letters denoting function.
Using the chart below, for instance, a pacemaker described as DDDR would be a dual-chamber paced, dual-chamber sensed, dual response, rate modulated pacemaker
|Chambers paced â€“ 1st position||Chambers sensed-2nd position||Response modes-3rd position||Programmable functions -4th position||Anti-tachycardia function â€“ 5th position|
|V = ventricle||V = ventricle||T = triggered||R = rateÂ modulated||P = paced|
|A = atrium||A = atrium||I = inhibited||C = communicating||S = shocks|
|D = dual||D = dual||D = dual (triggered/inhibited)||M = multiprogrammable||D = dual (paced and shocks)|
|O = none||O = none||O = none||P = simple programmable||O = none|
|————||————||———-||O = none||————-|
The one exception to the above pacemakerÂ nomenclature is the DVIC mode variation, which does not conform to the NBG identification code listed above.
When dealing with a patient with an implantable device, a notation in the chart should always be made regarding the pacemaker codes. If the pacemaker codes are not known, prompt consultation with a cardiologists is warranted.