An adult male is at the health clinic for an annual physical…

An adult male is at the health clinic for an annual physical exam. After walking from the car to the clinic, he developed substernal chest pain. The pain lasted for 2-3 minutes and then subsided with rest. He indicates that this has occurred frequently over the past few months with similar exertion. The nurse suspects he is most likely experiencing: 

A 45-year-old male presents for a routine checkup with his p…

A 45-year-old male presents for a routine checkup with his primary care provider. A blood pressure check reveals a systolic pressure of 160 mm Hg and a diastolic pressure of 90 mm Hg. Which of the following is the most likely cause of this type of blood pressure elevation?