Mac makes a make shift smoke bomb so that when it's opened it would release its smoke cloud into the air in one big explosion, but when the police arrive, it's still releasing a cloud of smoke.
In A Prisoner of Conscience (1986), the mental hospital was located in Russia with Russian employees. Now it is in Czechoslovakia with Czech personnel.
Nitroglycerin tablets are used to widen the blood vessels during a heart attack. They are not, as Mac states, used to "jumpstart a heart".
Nitroglycerin tablets contain only a tiny amount of diluted nitroglycerin. They are completely inert and will not explode on impact.
Somehow the two escapees were able to get across the border and to U.S.A. without their passports with them.
This episode takes place in communist Czechoslovakia, yet Zorkin drives a 1974 Checker--an American car.
MacGyver was just at this ward a year ago, yet none of the staff or guards recognize him and none of the staff seen in that episode, are present. Given the turnover of personnel that would explain why no one recognized Mac.
Nitroglycerin tablets are very tiny in size. The tablets Mac used were much bigger and were probably aspirin tablets instead.
The Czechoslovakia/Austria border checkpoint looks suspiciously like Malibu Canyon.
Krug tells MacGyver and crew they are not wanted, "Dead or alive," just "dead," yet the Red Army officers don't fire on the vehicle and kill them immediately, instead order them to step out. Dead is dead, whether shot in the car or outside it.