What is slew rate pacemaker?
The slew rate refers to the slope of the intrinsic signal (Figure 8) and is measured in volts/second. High slew rates (>1.0 V/s in the ventricle and >0.5 V/s in the atrium) are desirable for consistent sensing.
What is a typical rate for pacemakers?
The pacemaker is individually programmed to maintain the patient’s natural, intrinsic ventricular rate which usually falls between 50 and 70 beats per minute.
What is VVI in pacemaker?
VVI(R) is ventricular demand pacing. The ventricle is paced, sensed, and the pulse generator inhibits pacing output in response to a sensed ventricular event. This mode of pacing prevents ventricular bradycardia and is primarily indicated in patients with atrial fibrillation with a slow ventricular response.
What is current of injury in pacemaker?
Current of injury was characterized as the duration of the intracardiac electrogram (EGM) and the magnitude of ST-segment elevation. Pacing parameters were measured up to 10 min after fixation. Results: A total of 96 active-fixation leads were studied, and 76 leads had a current of injury.
What is pacemaker syndrome?
Pacemaker syndrome is a phenomenon in which a patient feels symptomatically worse after pacemaker placement and presents with progressively worsening symptoms of congestive heart failure (CHF). This is mainly due to the loss of atrioventricular synchrony whereby the pathway is reversed and now has a ventricular origin.
What are the 2 types of pacemakers?
Types of Pacemakers
- Single-chamber pacemaker.
- Dual-chamber pacemaker.
- Biventricular pacemaker.
What to avoid if you have a pacemaker?
Keep at least 6 inches (15 cm) away from your pacemaker:
- Cellular phones, including PDAs and portable MP3 players with integrated cellular phones.
- Devices transmitting Bluetooth® or Wi-Fi signals (cell phones, wireless Internet routers, etc.)
- Headphones and earbuds.
- Magnetic wands used in the game of Bingo.
What are the symptoms of a failing pacemaker?
Signs and symptoms of pacemaker failure or malfunction include:
- Dizziness, lightheadedness.
- Fainting or loss of consciousness.
- Hard time breathing.
- Slow or fast heart rate, or a combination of both.
- Constant twitching of muscles in the chest or abdomen.
- Frequent hiccups.