A 72-year-old man with a known history of Parkinson’s disease presented to our ED with a chief complaint of palpitations. Below is the intracardiac EGM from his EP study.

What is the diagnosis, and what is the most likely mechanism behind the variation in Tachycardia Cycle Length (TCL)?

A young woman with palpitations. below you can find resting ECG, Documented ECG during palpitation, and EP tracing that showed sinus rhythm while RF ablation.

What is the most probable diagnosis?

A 50 y/o female patient admitted with atypical chest pain.

ECG is shown:

The ECG findings are most consistent with which ONE of the following diagnoses?

A 65 years old man presented with frequent PVC and syncopal attack, the fluoroscopy shot of early signal is shown,  

Where is the ablation catheter? where is the source of PVC?

A 65 years old man underwent a procedure,  ECG before and after the procedure are given:

Regarding ECG before and after, guess what procedure done for the patient.

A 40 years old man with palpitation and manifest preexcitation, ECG is shown:

What is accessory pathway localization?

A 35 y/o woman was evaluated for shortness of breath.

Echocardiography is shown:

what is the most likely diagnosis?

A 70-year-old woman experiencing dizziness; below are the ECGs captured over the course of one day.

Which option is NOT as accurate in this scenario?

During electrophysiology study, arrhythmia is easily induced with atrial burst pacing. You can find the tracing in below.

what is the correct statement?

A 60 y/o man with a history of PCI on LCX comes to ED complaining of acute chest pain and dizziness.

the ECG is shown:

what is your diagnosis and proposed treatment strategy?

A 50-year-old man with a history of high blood pressure and diabetes complained of severe chest pain. Initial tests revealed a positive troponin result. 

Based on the EKG and echocardiogram findings, what is the most likely diagnosis?

A 52-year-old man with a past medical history of hypertension presents with dyspnea. Myocardial perfusion imaging demonstrates reversible ischemia in the anterior wall territory. Elective coronary angiography sequence is displayed below.

Based on the most likely diagnosis, which of the following options is incorrect?

35 y/o man with Ebstein anomaly. ECG tracing is shown.

What is TRUE statement regarding 12 lead ECG :

A 78 y/o woman came to ED complaining of acute onset of retrosternal chest pain, she was anxious and suffer from severe chest pain. In her past medical history she only had a history of hypertension.at admission to hospital her vital signs were as follow:

BP=160/60  HR=110 RR=22 O2sat in room air=96%

an ECG &bed side echocardiography was done immediately

According to ECG &echocardiography what is your next appropriate step?

A 61-year-old man with a history of CABG is a candidate for elective cholecystectomy. He is relatively asymptomatic, and the 12-lead ECG is provided below.

What is your plan?

 A 16 y/o girl with history of recurrent convulsive episodes refractory to anti convulsive drugs, is consulted. In addition to various neurologic evaluation there are some ECG tracings which shown below.

Regarding ECG tracings, What is your idea about the patient ?

A 40 y/o lady came to ED complaining of acute retrosternal chest pain which was lasted one hour.The patient was asymptomatic at the time of visit, past medical history was unremarkable.The ECG was shown below. Bedside echo showed LVEF about 40 % with regional wall motion abnormality in mid ventricular part of inferior, posterior, anterior, lateral and anteroseptal of LV.

First  hs-cTnT = 58 ng/l  (with upper limit of 24 ng/l)

What is the most likely diagnosis for this patient?

70 y/o man with history of syncope underwent Echocardiography. TTE was shown:

Which one of the following NOT seen on this Echocardiography?

An 80 year old asymptomatic lady came with below ECG:

What is your diagnosis?

A 58-year-old lady with ICD_VR who presented with diaphragmatic twitching from 4 days ago. In the surface ECG, no capture is seen during the diaphragmatic twitching, but at the same time analysis of the device, the V pace is seen at a rate of 45 beats/min. The lead impedance was also 380 ohms, which has droped by about 250 ohms in the last 4 days. It denies any palpitation, chest pain, dyspnea and ICD shock. What is the most probable diagnosis for this patient?

What is the diagnosis?