That's up to God. I think it's possible to be injured (or health issue like heart attack) and die but be unable to repent. God will judge that person and what was done in their body. I believe God will be fair and consider past things like regular repentance etc.
2Co 5:10 For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad.
Salvation gives us a clean heart, past sin is forgiven.
Going on with the LORD, As we hear the word of God we are cleansed from failures “spot or wrinkle”
Ephesians 5:26, 27 KJV
That he might sanctify and cleanse it with the
washing of water by the word,
That he might present it to himself a glorious church,
not having spot, or wrinkle, or any such thing; but that it should be holy and
without blemish.
John 13:8 KJV
Peter saith unto him, Thou shalt never wash my feet. Jesus answered him,
If I wash thee not, thou hast no part with me.
John 13:9-10 KJV
Simon Peter saith unto him, Lord, not my feet only, but also my hands and my head.
[10] Jesus saith to him, He that is washed
needeth not save to wash his feet, but is clean every whit: and ye are clean,….
In our daily walk with the LORD there maybe some defilement, failure or shortcomings.
We don’t need salvation again, but only to wash our feet (daily walk)
That’s where we come to
“the blood of sprinkling”
Hebrews 12:22-24 KJV
But ye are come unto mount Sion, and unto the city of the living God, the heavenly Jerusalem, and to an innumerable company of angels,
[23] To the general assembly and
church of the firstborn, which are written in heaven, and to God the Judge of all, and to the spirits of just men made perfect, [24] And to Jesus the mediator of the new covenant,
and to the blood of sprinkling, that speaketh better things than that of Abel.
John 13:14 KJV
If I then, your Lord and Master, have washed your feet;
ye also ought to wash one another's feet.
See the spiritual meaning.