Pacemaker Malfunction • LITFL • ECG Library Diagnosis | 合法醫療器材資訊網

2021年6月4日—ECGfindingsmaybeminimal,althoughpresenceofpacingspikeswithinQRScomplexesissuggestiveofundersensing.Oversensing.Oversensing ...

Pacemaker Malfunction Overview Pacemaker malfunction can occur for a wide variety of reasons, ranging from equipment failure to changes in underlying native rhythm.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[1] is discussed extensively in a seperate post.

Problems with Sensing

Undersensing

Undersensing occurs when the pacemaker fails to sense native cardiac activity.Results in asynchronous pacing.Causes include increased stimulation threshold at electrode site (exit block), poor lead contact, new bundle branch block or programming problems.ECG findings may be minimal, although presence of pacing spikes within QRS complexes is suggestive of undersensing.

Oversensing

Oversensing occurs when electrical signal are inappropriately recognised as native cardiac activity and pacing is inhibited.These inappropriate signals may be large P ...

Pacemaker Rhythms – Normal Patterns | 合法醫療器材資訊網

2021年6月4日 — Paced ECG – Electrocardiographic Features · Vertical spikes of short duration, usually 2 ms. · May be difficult to see in all leads. · Amplitude ... Read More

Pacemaker Malfunction • LITFL • ECG Library Diagnosis | 合法醫療器材資訊網

2021年6月4日 — ECG findings may be minimal, although presence of pacing spikes within QRS complexes is suggestive of undersensing. Oversensing. Oversensing ... Read More

Pacemaker | 合法醫療器材資訊網

2010年6月24日 — A pacemaker is indicated when electrical impulse conduction or formation is dangerously disturbed. The pacemaker rhythm can easily be ... Read More

How to Interpret a Pacemaker ECG | 合法醫療器材資訊網

2016年5月24日 — For example, a patient who has a pacemaker with a currently-appropriate native rhythm may have an ECG that looks like the one above. Since the ... Read More

The Basics of Paced Rhythms | 合法醫療器材資訊網

2015年7月13日 — The Basics of Paced Rhythms · D: The pacemaker is capable of pacing both the atria and ventricles · D: The pacemaker is capable of sensing ... Read More

STEMI ? ABNORMAL PACEMAKER RHYTHM | 合法醫療器材資訊網

4. 可以拿一個磁鐵來把sensing function去除，讓pacing固定的rate。林醫師: Smith是說在pacemaker rhythm使用modified Sgarbossa criteria ... Read More

Interpretation of Pacemaker ECG | 合法醫療器材資訊網

The cardinal manifestation of pacing on surface ECG is the stimulation artifact (Figure 1). In atrial pacing, the stimulation artifact precedes the P-wave. In ... Read More

Cardiac Pacing and Pacemaker Rhythms | 合法醫療器材資訊網

2019年1月30日 — Normal atrial pacing (AAI or AAI[R]). The 12-lead ECG with rhythm strips shows an atrial paced rhythm at a rate of about 92 bpm. The atrial ... Read More

INTERPRETING THE ECG IN PATIENTS WITH PACEMAKERS | 合法醫療器材資訊網

Intrinsic atrial and ventricular rhythm, rate and QRS complex morphology. - Paced P wave and QRS complex morphology. - Fusion complexes. Read More

相關資訊整理

Pacemaker Malfunction • LITFL • ECG Library Diagnosis | 合法醫療器材資訊網

Pacemaker Rhythms – Normal Patterns | 合法醫療器材資訊網

Pacemaker Malfunction • LITFL • ECG Library Diagnosis | 合法醫療器材資訊網

Pacemaker | 合法醫療器材資訊網

How to Interpret a Pacemaker ECG | 合法醫療器材資訊網

The Basics of Paced Rhythms | 合法醫療器材資訊網

STEMI ? ABNORMAL PACEMAKER RHYTHM | 合法醫療器材資訊網

Interpretation of Pacemaker ECG | 合法醫療器材資訊網

Cardiac Pacing and Pacemaker Rhythms | 合法醫療器材資訊網

INTERPRETING THE ECG IN PATIENTS WITH PACEMAKERS | 合法醫療器材資訊網

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