[Impact of the time of outpatient monitoring of patients with implanted pacemakers to evaluate dangerous changes in the parameters of apparatuses].

Patients with implanted pacemakers (PM) should pass outpatient monitoring at definite intervals given in the PM certificate. The paper shows that the monitoring periods in the patients are frequently violated, therefore the voltage of the PM battery is less than the critical level at which the PM is to be replaced. As the discharge of the battery is less than the critical level, the electronic unit of the PM begins first to regenerate an irregular sequence of stimulating pulses and then the generation of pulses stops. Thus, if the outpatient monitoring intervals in patients with implanted PM are over those given in the PM certificate, this will cause errors in encoding the causes of replacement of a PM, followed by dangerous changes in its parameters.