A 39-year-old woman is experiencing paroxysmal palpitations. Below are the electrophysiological (EP) tracings.

What is the most probable diagnosis?

A 35 years old man, presented by recurrent palpitations. Below you can see two traces from 24 ECG Holter monitoring and also a trace during Electrophysiology study.

Regarding these traces, which diagnosis is less likely?

A 49-year-old man with a history of hypertension and smoking presented to the emergency department complaining of chest pain that started approximately 8 hours ago. His vital signs were stable. ECG is shown below.

Which statement is true?

A 75 y/o lady underwent coronary angiography. she had a history of pacemaker implantation 10 years ago. A shot of her angiography is shown:

Can you guess the kind of pacemaker lead?

A middle-aged woman presented to the ER with pre-syncope. Below are the serial ECGs taken in the ED:

Which arrhythmias are seen? 

A 14 y/o young girl came to your clinic complaining of multiple episode of sudden onset of palpitation, her main physician according to her ECGs during arrhythmia prescribe her verapamil 2 times a day.

according to ECGs ,what is your most likely diagnosis?

17 years old girl, was referred for EP study due to episodes of palpitations. 

bellow you can find tracings of arrhythmia, which was induced during EPS.

What is the most probable diagnosis, and which electrophysiologic phenomena is happening?  

Below you can find the ECG of arrhythmia and CS venogram during RF ablation.

Where is the ablation catheter and what was the target of ablation?

A 40 y/o man came to your clinic for routine checkup. He claimed that he had a valvular heart surgery about one year ago, but he did not have any document with him .He also stop taking his medication which was prescribed by his former physician and did not know the name of his drugs!!

Now he asked about the need for taking anticoagulant for his valve(His ECG showed normal sinus rhythm).

according to his CXR, what is your recommendation for taking anticoagulant?

A young patient came with palpitations and narrow complex tachycardia, 12 lead ECG is shown below:

What is the most probable diagnosis?

A woman in her 60s underwent cryoballoon ablation for AF. Below are 3 consecutive EP tracings during LUPV cryoablation.

What is the best explanation for these tracings?

A 21-year-old man with dyspnea on exertion (DOE) (FC II) presented to the emergency department. An echocardiography video is provided below for review.

Based on the echocardiography images, which option is incorrect?

A 68-year-old man with a left ventricular ejection fraction (LVEF) of 25%, experiencing frequent premature ventricular contractions (PVCs) at a burden of 45%, and mild coronary artery disease (CAD). The 12-lead ECG is displayed below.

Which statement is FALSE?

A 68-year-old woman with the past medical history of aortic valve replacement (AVR), mitral valve replacement (MVR), and septal myectomy (2013), presents to the emergency department. She reports a two-day history of substernal heaviness. The onset of her symptoms coincided with a interpersonal conflict involving her daughter and son-in-law.

Her prior coronary angiography, performed at the time of her valve surgery, was reported as normal.

Based on the most probable diagnosis suggested by the ECG and echocardiography findings, which of the following choices is correct?

55 y/o man with crushing chest pain & diaphoresis,

ECG is shown:

According to ECG, can you guess the culprit vessel?

A 27 years old man with palpitations and presyncope. ECG and EP tracings are shown : 

Which option shows the best diagnosis and treatment for this patient?

The patient in case 379, underwent EPS, the epicardial approach was needed.

Based on ECG and Precision mapping images, why we had to perform a subxiphoid epicardial approach?

A 40 y/o man known case of hypertrophic cardiomyopathy came to your clinic for consultation for ICD implantation.He was undergone 48 h ECG holter monitoring.

According to figure below what is your suggestion?

A 70-year-old diabetic woman presents to the emergency department with complaints of weakness, fatigue, and pain in her lower extremities

What initial action does the ECG (Electrocardiogram) suggest?

According to case 641.

 What is the best plan for managing his arrhythmia?