Final answer:
Joan may be experiencing an acute myocardial infarction (MI), commonly known as a heart attack, based on her symptoms. It is crucial for her to seek immediate medical attention.
Step-by-step explanation:
Based on the symptoms described by Joan, it is suspected that she may be experiencing an acute myocardial infarction (MI), commonly known as a heart attack. The retrosternal pain she is experiencing, along with the radiating pain into her jaw and left arm, are classic symptoms of angina pectoris associated with an MI. The electrocardiogram showing ST segment elevations in leads II, III, and AVF further supports this suspicion.
Acute MIs can present with various symptoms, including chest pain or discomfort, difficulty breathing, irregular heartbeat, nausea, sweating, anxiety, and fainting. Differential diagnosis is critical as these symptoms can also be associated with other medical conditions such as anxiety attacks and indigestion.
It is important for Joan to immediately seek medical attention and be properly evaluated and treated by healthcare professionals