Which of the following conditions are potential causes of secondary hypertension? (Select all that apply)

Choice A rationale
Pericardiocentesis is a procedure that uses a needle to remove fluid from the pericardial sac. This procedure can be used to relieve pressure on the heart caused by a large pericardial effusion.
Choice B rationale
A pericardiectomy is a surgical procedure that removes part or all of the pericardium. It is typically used to treat constrictive pericarditis, not pericardial effusion.
Choice C rationale
Heart catheterization involves inserting a long, thin tube (catheter) into a blood vessel and guiding it to the heart. It is typically used to diagnose and treat certain cardiovascular conditions, not pericardial effusion.
Choice D rationale
A thoracotomy is a surgical procedure to gain access to the chest. It is typically used for lung, esophagus, or other chest organ operations, not pericardial effusion.

Choice A rationale
Stable angina is characterized by chest pain that occurs with exertion and is relieved by rest. If a patient with angina pectoris is experiencing chest pain at rest and needs to take three nitroglycerin pills to relieve the pain, this is not typical of stable angina.
Choice B rationale
A full-blown acute myocardial infarction (MI), or heart attack, typically presents with severe chest pain, shortness of breath, and other symptoms. While chest pain at rest could be a symptom of an MI, other symptoms would likely be present.
Choice C rationale
Unstable angina is characterized by chest pain that occurs at rest, is severe and prolonged, and is not relieved by nitroglycerin. Therefore, a patient with angina pectoris who is experiencing chest pain at rest and needs to take three nitroglycerin pills to relieve the pain could be experiencing unstable angina.
Choice D rationale
Pulmonary embolus, a blockage in one of the pulmonary arteries in the lungs, typically presents with sudden-onset shortness of breath, chest pain that may become worse upon deep breathing or coughing, and other symptoms. Chest pain at rest could be a symptom of a pulmonary embolus, but other symptoms would likely be present.