A 22-year-old man with no previous cardiac history, but with a history of a seizure disorder for the past 4 years, presents to the emergency department after an unwitnessed syncopal episode. He is admitted to the hospital and placed on telemetry.
The patient was complaining of chest pain and dyspnea in the minutes preceding the ECG and became acutely unresponsive and pulseless while the ECG was being obtained.
65-year-old man with known coronary disease presents with lightheadedness and palpitations. What is the rhythm abnormality?
57-year-old man presents to the emergency department with a several-hour history of substernal chest burning radiating to his throat and left arm associated with diaphoresis and nausea.
A 45-year-old man has had several episodes of “racing heart” over the course of the morning and a feeling like his heart was coming out of his chest. These episodes have lasted several minutes at a time, and he has felt lightheaded during a few of them. On further questioning, he states he has had similar episodes in the past.
A 45-year-old man with obesity, hypertension, and obstructive sleep apnea presents to the emergency department with chest pain, dyspnea, and palpitations. His symptoms began suddenly this morning. His blood pressure is 100/60 mm Hg.
A 57-year-old woman with a long history of untreated hypertension presents to an urgent care clinic with complaints of 1 day of palpitations.
A 70-year-old man with severe chronic obstructive pulmonary disease is seen in the medical walk-in clinic for increasing cough. The nurse practitioner takes his pulse and notes an irregular heart rate. He obtains an ECG.
A 35-year-old woman recently diagnosed on echocardiogram with a benign left atrial myxoma causing mitral regurgitation has the following ECG. She does not complain of any symptoms.
