can someone share literature or reference to induce hypoxia invivo? and is there any alternative to hypoxia chamber to induce (cardiac) hypoxia in vivo (rat/mice) ?
In rats and / or mice it is complicated. What you are actually suggesting would be a myocardial infarction. In larger animals you could try a catheter with a balloon swollen in the common coronary trunk and produce a massive myocardial infarction for as long as you consider necessary. I do not see another option.