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The ECG in the evaluation of pacemaker function and diagnosis of malfunction - L.M. van Gelder

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PRIJS: GRATIS
FORMAAT: PDF EPUB MOBI TXT FB2
DATUM: none
DIMENSIE: 4,21
ISBN: 9789038600901
TAAL: Nederlands
SCHRIJVER: L.M. van Gelder

Omschrijving:

The ECG in the evaluation of pacemaker function and diagnosis of malfunction

... Evaluation, Troubleshooting, and Management of Pacing System Malfunctions ... Evaluation of Suspected Device Malfunction on ECG ... . Karoly Kaszala. Hunter Holmes McGuire VA Medical Center and Medical College of Virginia/VCU School of Medicine, Richmond, VA, USA. Introduction. The advanced functionality and programmability of modern pacemaker systems allow specific options to manage cardiac arrhythmias. Diagnosis of pacemaker malfunction is challenging and often associated with non-specific clinical symptoms while ECG changes can be subtle or absent. Note: Normal pacemaker function is discussed extensively in a seperate p ... 7: Evaluation, Troubleshooting, and Management of Pacing ... ... . Note: Normal pacemaker function is discussed extensively in a seperate post. Problems with Sensing. Undersensing. Undersensing occurs when the pacemaker fails to sense native cardiac activity ... Pacemaker syndrome describes abnormal patient symptoms (dyspnea, dizziness, chest pain, palpitations) after ruling out all other causes of pacemaker malfunction. Common to single chamber pacemakers, it is thought to be due to an abnormal depolarizing relationship between the atria and ventricles, or AV dyssynchrony [ 1] . Electrocardiographic signs of pacemaker malfunction can be grouped into four categories: failure to output, failure to capture, undersensing, and inappropriate pacemaker rate. For each of these categories, there may be true malfunctions and pseudomalfunctions. Atrial channel function is suspend during a fixed periods following atrial and ventricular activity to prevent sensing ventricular activity or retrograde p waves as native atrial activity. Magnet mode. Applying a m...