Intermittent ventricular undersensing in the device with MVP feature turned on caused repetitive mode switches between AAI and DDD mode. This report shows unexceptional occurrence of tricky ECG findings in patient with Medtronic dual‐chamber device. Keywords: ECG, managed ventricular pacing, pacemaker, undersensing. 1. INTRODUCTION

2024年10月6日 · Bih-Fang Guo, G. “What & How” About Implantation of AAI/R, DDD/R, and VVI/R Pacemakers. Acta Cardiol Sin 2005;21 Suppl II:9 17 [Free Full Text] Reade MC. Temporary epicardial pacing after cardiac surgery: a practical review. Part 2: Selection of epicardial pacing modes and troubleshooting. Anaesthesia. 2007 Apr;62(4):364-73. Review.

2024年10月8日 · Paced ECG – Electrocardiographic Features. The appearance of the ECG in a paced patient is dependent on the pacing mode used, placement of pacing leads, device pacing thresholds, and the presence of native electrical activity. Features of the paced ECG are: Pacing spikes. Vertical spikes of short duration, usually 2 ms.

Pacemaker with AAI has one electrode in the right atrium. The electrode is used for pacing and sensing, and the pacemaker is inhibited when spontaneous atrial activity (P-wave) is sensed. If atrial activity is slower than the basic rate of the pacemaker, then the pacemaker will pace.

AAI Mode. AAI pacing allows the ventricles to do their own thing, and only concerns itself with the atrial activity. It is reserved for patients presenting with Sick Sinus Syndrome with no atrioventricular node conduction abnormalities.

ECG Findings: 1. AAI Pacing. Note that AAI pacing is frequently used to treat symptoms related to sick sinus syndrome (SSS).

2015年4月1日 · ECG during narrow (AAI pacing, A) and wide QRS (DDD pacing, B) before (baseline) and after cardiac memory (CM) induction (day 7). A, At baseline, the T waves during AAI pacing are positive in most leads. On day 7 during AAI pacing, inverted T waves in multiple leads assume the polarity of the paced QRS complex consistent with CM.

Explore ECG NBG codes for pacemakers, covering stimulation modes, chamber positions, sensing responses, rate modulation, multisite pacing, and magnet use.

aai起搏器的特点及适应证：aai为心房起搏、心房感知、p波抑制型生理性按需起搏，适用于房室传导功能正常且无严重快速心律失常的病窦综合征患者。 AAI起搏器正常心电图特征

Patients with sick sinus syndrome and normal atrioventricular conduction, pacing can be accomplished with either a single chamber atrial pacemaker AAI/R or a dual chamber pacemaker DDD/R. The single chamber device has the advantages of simpler implantation and lower initial costs, while the dual chamber device offers protection in case ...