A 25-Year-Old Man Comes to the Emergency Department Due to Chest

question 265

Multiple Choice

A 25-year-old man comes to the emergency department due to chest heaviness and palpitations for the last 3 hours.  Over the past year, he has had similar episodes that resolved with deep breathing, but none lasted as long as this one.  The patient has no chronic medical conditions and takes no medications.  He does not use tobacco, alcohol, caffeine, or illicit drugs.  Blood pressure is 100/70 mm Hg, and pulse is 160/min and regular.  The neck is supple, the thyroid is normal, and there is no lymphadenopathy.  The lungs are clear to auscultation.  ECG is shown in the exhibit.  Which of the following is the most likely cause of this patient's symptoms?

• A)Abnormal conduction in areas of ischemic ventricular scarring
• B)Abnormal conduction through the atrioventricular node
• C)Atrial remodeling with ectopic foci in the pulmonary vein ostia
• D)Degeneration of the sinoatrial node
• E)Delayed repolarization of ventricular cardiomyocytes

Analyze the complexity and challenges associated with implementing sustainability in organizations.

Identify and understand major trends in digitization affecting supply chains.

Distinguish between different types of innovation and illustrate with examples.

Understand the requirements for cognitive systems in the context of digital transformation.

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Definitions:

Spatial Memory

The part of memory responsible for recording information about one's environment and spatial orientation.

Recognition

The acknowledgment or appreciation of someone's work, achievements, or status, often serving as a form of motivation.

Cataracts

A medical condition where the lens of the eye becomes progressively opaque, leading to blurred vision.

Sunlight

The natural light emitted by the sun, which is essential for the survival of many organisms and influences Earth’s climate.