I was flighting from La Paz (El Alto airport, LPB) which it is located at an altitude of 4061 m (13 600 ft), which is above standard pressure of passenger flights.
How is the cabin pressure usually set up? Do the cabin remain at La Paz pressure until near landing (saving weight), or the cabin will be pressured in flight (reducing medical problem risks)?
Note: this question is about both legs: I assume usually both legs are planed together.
Do pilots and crew require special procedures or medical checks to commercially pilots on such high altitude? (health reasons, not about aircraft performance). Physical strength is reduced on such altitude (e.g. for emergency evacuation).