August
12
22:26
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Single- and dual-chamber pacemaker

pacemaker is a medical device designed to maintain the rhythm of the heart.The main challenge facing the pacemaker - to maintain or impose a patient's heart rate with heart rate or lack of blockade between the atria and ventricles.Depending on the patient's disease can be mounted single or double chamber pacemaker.

Species pacemakers

Each patient has different diseases that are not amenable to adjustment with a single instrument.The conductivity can be broken at different levels and in varying degrees, which requires radically different approaches.

There are the following types of pacemakers:

  • single-chamber;
  • two-chamber;
  • three-chamber profiles.

history pacemakers

work the first models of single-chamber pacemaker was provided in asynchronous mode, and stimulation was carried out at a fixed rate.Later, there were models of ECS, with the help of which could be transferred to a private activity of the heart, and they worked in the "on demand".Multiprogrammiruemymi pacemakers provide a broad set

of characteristics in which there is a need to change the electrical parameters of the pacemaker if the heart rhythm changes.

next generation of dual-chamber pacemakers have become instruments through which ensured the physiological nature of pacing due to the implementation of the automatic control of the frequency and / or increasing the degree of filling of the ventricles of the heart atrial synchronous contraction.Physiological stimulation of normal cardiac output, and greatly increases the functionality of the patient.

latest developments pacemaker operating in dual-chamber mode, the devices are able to determine whether a patient has atrial fibrillation and flutter, in response to which they automatically switch to single-chamber pacing mode.Due to this is a possibility that will be supported by SVT.

were recently released three-chamber pacemakers designed to treat heart failure and implantable cardioverter-defibrillator, the purpose of which is the treatment of ventricular tachycardia and ventricular fibrillation, which are the most dangerous types of arrhythmia.In addition, it is provided through prevention of sudden cardiac death.Single-chamber pacemakers

Under the single-chamber pacemakers refers to devices that are capable of perception and stimulation of only one chamber of the heart (atrial or ventricular).These devices are the simplest of all the varieties of pacemakers.They are frequency-adaptive, iesuch that automatically increase the rate during physical exertion, or without frequency adjustment, i.e.stimulation is performed continuously a predetermined frequency.

Today, single-chamber pacemakers are limited in use, because the permanent form of atrial fibrillation is carried out only stimulation of the right ventricle.In all other cases, it provided a dual chamber pacemaker implantation.

dual chamber pacemakers

Under the two-chamber pacemakers refers to devices that are capable of perception and the stimulation of the two chambers of the heart (atrium and ventricle).This kind of pacemaker is adaptive frequency or no frequency adaptation.In almost all modern imported pacemakers have many variety of additional features that make possible the optimal pacing configuration for each patient.