Print Departments and specialties Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery. Departments with related expertise Cardiovascular Medicine Sports Medicine Doctors who perform this procedure Edit search filters close Narrow your search By location Jacksonville, FL By last name Find a doctor whose last name begins with the letter A A Find a doctor whose last name begins with the letter B B There are no doctors whose last name begins with the letter C C There are no doctors whose last name begins with the letter D D There are no doctors whose last name begins with the letter E E There are no doctors whose last name begins with the letter F F There are no doctors whose last name begins with the letter G G There are no doctors whose last name begins with the letter H H There are no doctors whose last name begins with the letter I I There are no doctors whose last name begins with the letter J J There are no doctors whose last name begins with the letter K K Find a doctor whose last name begins with the letter L L There are no doctors whose last name begins with the letter M M There are no doctors whose last name begins with the letter N N There are no doctors whose last name begins with the letter O O active Find a doctor whose last name begins with the letter P P There are no doctors whose last name begins with the letter Q Q Find a doctor whose last name begins with the letter R R There are no doctors whose last name begins with the letter S S Find a doctor whose last name begins with the letter T T There are no doctors whose last name begins with the letter U U There are no doctors whose last name begins with the letter V V There are no doctors whose last name begins with the letter W W There are no doctors whose last name begins with the letter X X There are no doctors whose last name begins with the letter Y Y There are no doctors whose last name begins with the letter Z Z Reset all filters Search Tips Use quotes for phrases. Even if there are no auto-suggestions within the search field, hit "Search" anyway, as you may still get results. Displaying 1-1 out of 1 doctors available Last Name Initial: P Julio C. Perez Downes, D.O. Echocardiographer Cardiologist Nuclear Medicine Specialist Jacksonville, FL Areas of focus: Echocardiogram, Stress test, Nuclear stress test, Stress echocardiogram, Hyperlipidemia, Heart disease, Heart arrhythmi...a, Angina, Heart attack Show more areas of focus for Julio C. Perez Downes, D.O. By Mayo Clinic Staff Request an appointment About Dec. 16, 2022 Print Show references Heart tests. National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health/heart-tests. Accessed Oct. 21, 2022. Chareonthaitawee P, et al. Exercise ECG testing: Performing the test and determining the ECG results. https://www.uptodate.com/contents/search. Accessed Oct. 21, 2022. Jonas DE, et al. Screening for cardiovascular disease risk with resting or exercise electrocardiography: Evidence report and systematic review for the US Preventive Services Task Force. JAMA. 2018; doi:10.1001/jama.2018.6897. Libby P, et al., eds. Exercise physiology and exercise electrocardiographic testing. In: Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 12th ed. Elsevier; 2022. https://www.clinicalkey.com. Accessed Oct. 21, 2022. Related Angina Arteriosclerosis / atherosclerosis Atrial flutter Bradycardia Chest pain Congenital heart disease in adults Coronary artery disease Dilated cardiomyopathy Enlarged heart Exercise stress test Heart arrhythmia Heart attack Heart disease Heart failure Low blood pressure (hypotension) Mitral valve prolapse Mitral valve regurgitation Orthostatic hypotension (postural hypotension) Pectus excavatum Premature ventricular contractions (PVCs) Pulmonary fibrosis Tricuspid valve regurgitation Vasovagal syncope Ventricular tachycardia Show more related content News from Mayo Clinic Understanding your heart test: What to expect, how to prepare Feb. 26, 2024, 03:58 p.m. CDT Stress test abnormalities reveal more than just cardiovascular risks, Mayo Clinic study finds Sept. 06, 2023, 03:00 p.m. CDT Stress testAboutDoctors&Departments PRC-20316984 Patient Care & Health Information Tests & Procedures Stress test