YOU SAID:
Insomnia caused John Smith’s immune system to collapse first which then led his circulatory system to collapse. Heart transplant was performed on John Smith as a last resort but without success.
INTO JAPANESE
不眠症により、まずジョン・スミスの免疫系が崩壊し、それが続いて循環器系も崩壊しました。最後の手段としてジョン・スミスに心臓移植手術が行われました。しかし、成功しませんでした。
BACK INTO ENGLISH
The insomnia caused John Smith's immune system to collapse, followed by his circulatory system. As a last resort, John Smith underwent a heart transplant, but it was unsuccessful.
INTO JAPANESE
不眠症によりジョン・スミスの免疫系が崩壊し、続いて循環器系も崩壊した。最後の手段としてジョン・スミスは心臓移植手術を受けたが、失敗に終わった。
BACK INTO ENGLISH
The insomnia caused John Smith's immune system to collapse, followed by his circulatory system. As a last resort, John Smith underwent a heart transplant, but it was unsuccessful.
That didn't even make that much sense in English.