We are not bound to accept EXTRAORDINARY measures...but do dialysis and blood transfusion qualify as extraordinary?  Both were mentioned.  These are common procedures.
Also the OP mentioned the hospice worker.  Why is he in hospice care?  There must be some other diagnosis that puts him in a place for the terminally ill.

Dialysis is NOT "ordinary"  - though it may be "common," meaning there are a GREAT number of people suffering on dialysis.

It is a very serious treatment, and a very painful one, as well.

A dialysis patient is in a state of organ failure, that progresses until other organs fail also. This is why a person can only stay on dialysis for a very limited period of time. Then they go into organ failure, and there is no more means to keep them alive and they are assigned to hospice care.

Please bring your grandfather a good an holy traditional priest to prepare him for what is hopefully his journey to Our Lord.

Quote from: Raphaela

There are no conditions! Our Lady said, "Whoever dies clothed in this will not suffer hell fire." No conditions. Leave it to Her!

Sorry but you are very wrong about conditions.  

From page 630 of the Ecclesiastical Dictionary the following is a partial quote from 2 pages.

"To obtain the first privilege of the holy scapular, that is to say, the grace of a happy death, and to share in the indulgences of the confaternity, the merits of the Carmelite Order, and the protection of the Blessed Virgin, it is necessary to be a member of the Confraternity of the Holy Scapular.  For this purpose two conditions must be fulfilled:
1. To receive the blessed scapular from the hands of a priest who has the power of giving it: and
2.  To wear it around the neck day and night, in health and in sickness, in life and at death.

To enjoy the second privilege, that is, to have a speedy release out of purgatory, it is also necessary for all the members to obtserve the chastity proper to their state.    
Moreover, for such as can read;  to recite daily the Canonical Office of the Church, or the Little Office of the Blessed Virgin according to Roman Breviary."

It goes on to explain for those who can't read they are to abstain from flesh meat on Wednesday, Friday and Saturday every week.

Read the questions and answers in the back of the little booklet Garment of Grace.
It states:
"There are three conditions for gaining the Sabatine privilege.  They are:
1 We must WEAR THE SCAPULAR.
2 OBSERVE CHASTITY according to our state in life.
3 RECITE THE LITTLE OFFICE OF OUR BLESSED MOTHER (the Rosary or some other pious work can be substituted for the Office of Our Lady.  The faculty to sanction this change was granted to ALL CONFESSORS  by Pope Leo XIII in the Decree of the Congregation of Indulgences in June of 1901)."

But you have to ask for it.

Too many things are not being taught since Vat II

.  

I may be wrong but I think The Sabbatine privilege is different to the promise Our Lady made to St Simon Stock.

We should even give the Scapular to non-Catholics as Our Lady will bring conversions to those who will wear it and say one Hail Mary each day as the following true story will show: An old man was rushed to the St. Simon Stock Hospital in New York City, unconscious and dying. The nurse, seeing the Brown Scapular on the patient, called the priest. As he was saying the prayers for the dying, the man became conscious and spoke up: "Father, I am not a Catholic." "Then why are you wearing the Brown Scapular?" asked the priest. "I promised my friends to wear it," the patient explained, "and say one Hail Mary a day." "You are dying," the priest told him. "Do you want to become a Catholic?" "All my life I wanted to be one," the gasping man replied. He was baptized, received the last rites and died in peace. Our Lady took another soul under Her mantle, through Her SCAPULAR!

cf. https://olrl.org/pray/rosary.shtml

If you think that wearing the scapular is a badge signifying your faithfulness and merits then you have the wrong idea about it.  It is a badge signifying the merits and power of Our Lady.  It is true that those who wear it insincerely, presumptuously or with the intention of mocking the devotion will not benefit from it but in that case Our Lord will see to it that the scapular is removed before death.  Consider the story of the woman who wore the brown scapular but fell into mortal sin and then into despair.  She determined that she would commit ѕυιcιdє by casting herself off a bridge into a river to be drowned.  She jumped and submerged into the water but soon bobbed up to the surface.  Realizing that she was still wearing the brown scapular, she tore it off and cast it aside.  Whereupon she sank into the water and drowned.

She didn't die until she took the scapular off.  Think about it.  If you wear the brown scapular in sincerity, Our Lady will obtain for you all the graces necessary to save your soul.  Even if you are a wretched sinner beyond all humanly reasonable hope she can save you.  Don't trust in your own strength.  Trust in Our Lady's merits.

Our Lady will save even those presumptuous Catholics who think they have merited to wear the brown scapular.  No it's not a lucky charm but neither is it a reward for good behavior.  It is a grace freely given by a loving God to whom He wills or to whom His Mother wills.

By the way, I recommend that if you do wear the brown scapular you should wear it at all times, even while bathing.  It is far too easy to slip and fall or be electrocuted in the tub or shower.

Also, don't wear the felt scapulars.  Make sure you have a woven scapular.  You should be able to see the weaving.

From what I have read, people that fit the above description do not die in their scapular. There are very real recorded instances of such people purposely committing sins while having thier scapular on when death approaches they themselves remove the scapular due to the burning pain it caused.

I'm confused. My grandfather has been on dialysis for years due to loss of blood through his bladder. Basically, he receives blood every week or else he will bleed to death.

Now he's refusing to take the blood anymore. The hospice worker says he'll be dead within the week.

Considering my Grandfather's catholic, is this considered ѕυιcιdє? Will he go to Hell?

I'd appreciate any and all information to help me understand this situation. I'm not nearly as familiar with the religion or bible as my grandfather. I'm looking for help from the well versed and experienced Catholics out there.

I appreciate any help!!

If he's going to take that route, then please get him to the nearest Traditional Catholic priest for a General Confession or Last Rites.  If he's too sick to travel, then deliver a Catholic priest to his room at the hospice.  

Confession is needed, and he can also discuss this decision with the priest.