Is it possible nightmares or upsetting dreams would cause a heart attack while sleeping?

Nightmares effects: Nightmares are vividly realistic, disturbing dreams that wake you from a deep sleep, at times with heart pounding from fear. Post-traumatic stress disorder (PTSD), Blood pressure medications c an cause recurrent nightmares Sleep deprivation caused by nightmares, can cause a heart disease It is unlikely that nightmares or upsetting dreams would cause a heart attack while sleeping

Yes: The fear and overwhelming sympamethetic response may induce a heart attack in a patient with CAD. But this not common