Galveston County Daily News, Nov. 15, 2008 Admissions are up 40 percent, emergency room visits have increased by a third and operating rooms are running around the clock at Mainland Medical Center. Since Hurricane Ike ravaged UTMB's John Sealy Hospital on Sept. 13, admissions at Mainland Medical have jumped, as has demand for other medical services it provides. Likewise, Clear Lake Regional Medical Center in Webster reported a 30 percent increase in hospital admissions while emergency room visits doubled.