Coupled beats in a boogie dance duet. What is the mechanism?

Coupled Beats After AV Node Ablation: What is the Mechanism?

An 83 year old lady was highly symptomatic from paroxysmal Atrial Fibrillation (AF) despite numerous antiarrhythmic and rate-limiting medications. Given her preserved left ventricular function, a pace and ablate strategy was pursued. Ablation of the AV node proved challenging requiring 2 procedures with apparently stable AV block and regular escape at 40bpm after the first sitting. Persistent R...

Discordant junctional beats and preexcitation: what is the mechanism?

Narrow QRS Tachycardia with Alternate Wide QRS Beats: What is the Mechanism?

A 44-year old lady underwent electrophysiology study for recurrent palpitations and documented narrow QRS regular tachycardia. The baseline ECG showed subtle preexcitation that was easily manifest on atrial pacing. The retrograde atrial activation sequence during ventricular pacing was eccentric suggesting retrograde conduction over the accessory pathway. A regular narrow QRS tachycardia with c...

P-value: What is and what is not

The misinterpretation and misuse of p-value have been increasing for decades. In March 2016, the American Statistical Association released a statement to warn about the use and interpretation of p-value. In this study, we provided a definition and discussion of p-value and emphasized the importance of its accurate interpretation.    

What is the Clinical Skills Learning Center?

With shorter periods of hospitalazation, fewer patient beds and more health care facilities in the society, patients are now more acutely ill and highly dependent, causing less opportunities for medical students to practice and learn basic clinical skills. On the other hand, enhanced patient rights and other learnig limitations require that professional education provide not only knowledge and ...