Research Article| Volume 29, ISSUE 4, 104629, April 2020

The Influence of Physical Activity on Cavernous Malformation Hemorrhage


      Background and Aim: Cavernous malformations are low-flow vascular malformations of the central nervous system. Brainstem location and prior hemorrhage increase future hemorrhage risk. We sought to determine the influence of physical activity on hemorrhage risk. Methods: Consecutive patients with radiologically confirmed cavernous malformations participated in a prospective registry with structured, baseline interviews, surveys, and examinations. Patients were asked about unusual events prior to initial clinical presentation. Medical records and MRIs were reviewed. Patients were surveyed about their physical activity after receiving their diagnosis. Annual follow-up surveys to patients ascertained new hemorrhages. Follow-up terminated at last follow-up, hemorrhage, surgery, or death. Univariate analysis assessed the risk of physical activities on prospective hemorrhage. Results: Of 195 patients, 117 (60%) were female. Median diagnosis age was 41 years. After diagnosis, 103 (52.8%) patients returned the physical activity survey (cerebral n = 100; spine n = 3). Over 539.4 patient years, 23 had a prospective hemorrhage. Five patients were removed from analysis because they had less than 6 weeks of physical-activity exposure before censor. The remaining 98 had no difference in prospective hemorrhage risk than those patients participating greater than or equal to 3 times monthly in walking, running, greater than 20-pound or less than 20-pound weight lifting, or noncontact sports. Few (n = 5) reported contact-sport participation, scuba diving (n = 2), or high-altitude climbing (n = 1) greater than 3 times monthly. Conclusions: Aerobic activity and noncontact sports do not increase hemorrhage risk in cerebral cavernous malformation; patients should not be restricted. Less is known about contact sports, high-altitude climbing, scuba diving, and those with spinal-cord cavernous malformation.

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