Dad's in the hospital

Last Friday my Dad was having bad Montezuma's revenge and began to get really week. Saturday my mom took dad to the emergency room. Dad had some sort of hardness on his stomach area. Turns out that hardness was due to his bladder being 'locked up'. The doctors drained 2 liters of the yellow stuff from my dad. Yup that's a lot. Dad was also in a lot of pain. He's still in the hospital.