Exercise-Induced Hypertension After Surgical Repair of Coarctation of the Aorta
MICHAEL D. FREED, MD ALBERT ROCCHINI, MD AMNON ROSENTHAL, MD, FACC ALEXANDER S. NADAS, MD, FACC ALDO R. CASTANEDA, MD, FACC Boston, Massachusetts
From the Departmentsof Cardiologyand Cardiovascular Surgery,The Children's Hospital Medical Center and the Departments of Pediatrics and Surgery, Harvard Medical School, Boston, Massachusetts. This study was supported in part by Grants T 10 5855-07and 5P01 HL 10436-08from the National Heart, Lung,and Blood Institute, National Institutes of Health, Bethesda, Maryland. Manuscript received August 28, 1978, accepted September 6, 1978. Address for reprints: Michael D. Freed, MD, Departmentof Cardiology,The Children'sHospital Medical Center, Boston, Massachusetts02115.
To study exercise-induced hypertension after surgical repair of coarctation of the aorta, 30 patients aged 6 to 30 years (median 14) were exercised to exhaustion on a treadmill using the Bruce protocol. Twenty patients with hemodynamically insignificant heart disease served as controls. Systolic blood pressure was measured simultaneously in the arm and leg before and immediately after exercise. There was no significant difference between the control and coarctectomy groups with regard to age at exercise, duration of exercise, maximal heart rate or serum lactate after exercise. Blood pressure in the arm increased significantly after exercise in both groups (control group: 110 [range 90 to 140] to 135 [range 114 to 164] mm Hg, P
MICHAEL D. FREED, MD ALBERT ROCCHINI, MD AMNON ROSENTHAL, MD, FACC ALEXANDER S. NADAS, MD, FACC ALDO R. CASTANEDA, MD, FACC Boston, Massachusetts
From the Departmentsof Cardiologyand Cardiovascular Surgery,The Children's Hospital Medical Center and the Departments of Pediatrics and Surgery, Harvard Medical School, Boston, Massachusetts. This study was supported in part by Grants T 10 5855-07and 5P01 HL 10436-08from the National Heart, Lung,and Blood Institute, National Institutes of Health, Bethesda, Maryland. Manuscript received August 28, 1978, accepted September 6, 1978. Address for reprints: Michael D. Freed, MD, Departmentof Cardiology,The Children'sHospital Medical Center, Boston, Massachusetts02115.
To study exercise-induced hypertension after surgical repair of coarctation of the aorta, 30 patients aged 6 to 30 years (median 14) were exercised to exhaustion on a treadmill using the Bruce protocol. Twenty patients with hemodynamically insignificant heart disease served as controls. Systolic blood pressure was measured simultaneously in the arm and leg before and immediately after exercise. There was no significant difference between the control and coarctectomy groups with regard to age at exercise, duration of exercise, maximal heart rate or serum lactate after exercise. Blood pressure in the arm increased significantly after exercise in both groups (control group: 110 [range 90 to 140] to 135 [range 114 to 164] mm Hg, P
