My husband is suffering from severe nausea, severe leg cramps,he’s cold, the temp is 100 degrees outside- he’s shaking and clammy, his bp is 138/78, I am sure he is dehydrated, but has been diagnosed with high bp, high cholesterol, pre- diabetic. I’m worried about blood clots or something these hinges can cause. He’s on an oil rig in Texas. Please give advice. Thank you