Yup, makes sense because although the phrase "heart attack" generally has a worse connotation, the immediate reality of a full cardiac arrest is actually much worse - the entire heart stops instead of only part of it.
"In summary, there is a difference between a heart attack and a cardiac arrest. A heart attack occurs when the blood supply to part of the heart stops and thus causes a section of the heart muscle to begin to die; whereas a cardiac arrest occurs when the heart stops beating as a whole.Jun 25, 2019" [1]
https://www.news-medical.net/health/Heart-attack-and-cardiac...
"In summary, there is a difference between a heart attack and a cardiac arrest. A heart attack occurs when the blood supply to part of the heart stops and thus causes a section of the heart muscle to begin to die; whereas a cardiac arrest occurs when the heart stops beating as a whole.Jun 25, 2019" [1] https://www.news-medical.net/health/Heart-attack-and-cardiac...