EKG EXAM 3

Based on the following EKG, what is the diagnosis and what is the treatment if the patient is symptomatic?

A 67-year-old male with a history of hypertension and heart failure presents to the emergency department with palpitations, dyspnea, and fatigue for the past 2 days. An ECG reveals no distinct P waves, an irregularly irregular rhythm, and a ventricular rate of 110 bpm. Based on the findings, what is the most likely diagnosis?

A 72-year-old female with a PMH of hypertension, diabetes, and congestive heart failure presents with complaints of palpitations, shortness of breath, and fatigue that started 24 hours ago. Her blood pressure is 128/76 mmHg, heart rate is 140 bpm, and respiratory rate is 18 breaths per minute. EKG reveals the following rhythm strip. She has no history of prior strokes or bleeding disorders. Which of the following is the most appropriate next step in management?

A 24-year-old female presents to the urgent care complaining of intermittent palpitations for the past week. The palpitations occur suddenly, last for about 10 seconds, and resolve on their own. She describes the sensation as her heart “skipping a beat” followed by a forceful thump. She denies chest pain, shortness of breath, dizziness, or syncope. She has been drinking more coffee recently while staying up late to study. She does not smoke or use recreational drugs. On examination, her vital signs include a pulse of 78 beats per minute and blood pressure of 118/76 mm Hg. Heart and lung examinations are unremarkable. An ECG reveals the following rhythm strip. What is the most appropriate next step in management?

A 32-year-old woman is brought to the emergency department after experiencing a brief episode of syncope while at work. Her coworkers state that she briefly lost consciousness but quickly regained awareness without confusion or residual deficits. She has no prior medical conditions but has been taking fluoroquinolone antibiotics for a urinary tract infection over the past week. She also admits to a recent episode of nausea and vomiting, which has limited her oral intake. On examination, her blood pressure is 90/55 mmHg, pulse is 120/min and irregular, and she appears mildly diaphoretic. Laboratory testing reveals: Serum potassium: 2.8 mEq/L (normal: 3.5–5.0). Serum magnesium: 1.2 mg/dL (normal: 1.7–2.2). An ECG is ordered and reveals the following. What is the most appropriate next step in management?

A 75-year-old man presents to the emergency department with complaints of dizziness and two episodes of near-syncope over the past 24 hours. He has a history of coronary artery disease and underwent a myocardial infarction two years ago. He is not currently taking any rate-slowing medications. On examination, his blood pressure is 100/60 mm Hg, and his pulse is 40 bpm. An ECG is shown below. What is the most appropriate next step in management?

A 68-year-old male presents to the emergency department with complaints of chest pain, fatigue, and lightheadedness for the past 2 hours. He has a history of hypertension and coronary artery disease. He recently recovered from an upper respiratory infection one week ago. On examination, he is diaphoretic and bradycardic with a pulse of 38 beats per minute and blood pressure of 88/55 mm Hg. An ECG reveals the following. Which of the following is the most appropriate next step in management?