QuestionSBA
QuestionChoice
A first-degree heart block occurs when there is a regular prolongation of the PR interval on ECG. Most patients with first-degree heart block are asymptomatic - they certainly would not be experiencing chest pain that radiated to their left arm and jaw. These are signs of a myocardial infarction.
10001985
d
First-degree heart block
QuestionChoice
Atrial Fibrillation (AF) is a cardiac arrhythmia that can result in a patient feeling faint, having palpitations, chest pain and shortness of breath.

Although our patient is having chest pain, it would not radiate anywhere in AF. Our patient is also not complaining of any other AF symptoms - they are much more likely to be having a myocardial infarction than atrial fibrillation.
10001984
c
Atrial Fibrillation
QuestionChoice
Second-degree heart block can be split into Mobitz Type I and Mobitz Type II. In Mobitz Type I there is a regular pattern of gradual prolongation of the PR interval until a P wave is not followed by a QRS complex. In Mobitz Type II, there are P waves that are not followed by QRS complexes but there is no obvious pattern to which P wave will be skipped.

In second-degree heart block patients will experience symptoms such as feeling faint, palpitations, chest pain and shortness of breath.

Although our patient is experiencing chest pain, you would not expect chest pain in a second-degree heart block to radiate - this is indicative of a myocardial infarction, which is the condition our patient is more likely to have.
10001986
e
Second-degree heart block
QuestionChoice
This patient is presenting with a myocardial infarction. Myocardial infarctions are commonly associated with chest pain that radiates to the left arm, jaw and back, sweating, nausea and shortness of breath.

We are unable to differentiate between a Non ST-Elevated Myocardial Infarction (NSTEMI) and an ST-Elevated Myocardial Infarction (STEMI) without an ECG, however, since this is the only myocardial infarction option present we can safely choose NSTEMI as the most likely diagnosis.
10001982
a
Non-ST-Elevation Myocardial Infarction (NSTEMI)
QuestionChoice
Congestive Heart Failure would present with more chronic symptoms. These symptoms include shortness of breath on exertion or lying down, peripheral oedema, palpitations and a cough with the production of pink sputum.

This patient is not presenting with any of these symptoms - he is presenting with classic symptoms of a myocardial infarction (MI).
10001983
b
Congestive Heart Failure
Concept
Chapter
2693
3802
Myocardial Infarction
Topic
134
Cardiology
12943
A 56-year-old man presents to the Emergency Department with chest pain, radiating to the left arm and jaw. He is also sweating and reports feeling nauseous.

Which of the following is the most likely diagnosis?
a