My husband has Cerabavascular disease /atrophy epilepsy

From Google:

The main cause of cerebrovascular disease is atherosclerosis (plaque build-up in the arteries), which restricts blood flow to the brain. This process is overwhelmingly driven by hypertension (high blood pressure), which damages the lining of blood vessels and makes them vulnerable to blockages or ruptures. 
Brigham and Women's Hospital
 

Cerebrovascular disease encompasses a group of conditions that affect the blood vessels supplying the brain, most notably leading to strokes (both ischemic and hemorrhagic) and transient ischemic attacks (TIAs). 
MedlinePlus (.gov)

Underlying Pathological Causes
Atherosclerosis: Fatty deposits (plaque) accumulate in the arteries, narrowing the passageway and reducing blood flow. This plaque can also rupture, causing a blood clot to form. 
Medical News Today

Thrombosis & Embolism: Blood clots can form directly inside a brain artery (thrombus) or travel from another part of the body, such as the heart (embolus), to block a cerebral vessel. 
National Institutes of Health (.gov)
 

Hemorrhage: Weakened or damaged blood vessels can break, causing bleeding in the brain. 
National Institutes of Health (.gov)
 

Leading Risk Factors

These pathological processes are primarily accelerated by several key modifiable and non-modifiable risk factors: 
News-Medical

Hypertension: Considered the single most important and primary risk factor. High blood pressure places constant, excessive strain on artery walls. 
MedlinePlus (.gov)
 

Smoking & Tobacco Use: Chemicals in cigarettes severely damage the cardiovascular system, promote atherosclerosis, and elevate blood pressure. 
Centers for Disease Control and Prevention | CDC (.gov)
 

Diabetes: High blood sugar accelerates endothelial dysfunction and fatty plaque accumulation. 
nhlbi, nih (.gov)
 

High Cholesterol: Elevated low-density lipoprotein (LDL) contributes heavily to plaque build-up and hardening of the arteries. 
Centers for Disease Control and Prevention | CDC (.gov)
 

Age & Genetics: The risk of developing cerebrovascular disease naturally increases with advancing age and a family history of stroke. 
MedlinePlus (.gov)
 

For comprehensive information on prevention and symptom recognition, you can refer to resources like the American Heart Association or the Centers for Disease Control and Prevention. 

YOU are going to need lots of help after a hip replacement so what is your plan? Look into getting your husband into respite care in a Skilled Nursing facility or Assisted Living during your recovery period.

Best of luck to you.

Navigating a complex diagnosis like vascular-related epilepsy and brain atrophy is stressful enough on its own, but facing your own major hip surgery at the same time creates an incredibly heavy burden.

You cannot take care of him if you are recovering from major surgery.
Right now, your priority must shift from managing his medical jargon to setting up a concrete, hands-on support system for his care while you heal.

How to Understand His Condition Simply
To ease your mind, you do not need to master neurology.

You can think of his condition in three simple sentences:

The underlying issue: The blood vessels in his brain have some blockages (cerebrovascular disease).

The physical change: Because of poor blood flow, a small part of his brain shrank and formed a tiny scar (atrophy).

The daily symptom: That scar occasionally causes an electrical misfire, which results in a seizure (epilepsy).

As long as he takes his daily medications to prevent seizures and protect his blood vessels, his condition is being managed.

Critical Safety Checklist for Your Hip Surgery

Because your husband has a seizure disorder and vascular disease, his care environment must change while you are in the hospital and recovering. You should take these immediate steps before her surgery date:

Notify His Doctors: Call your husband’s neurologist and primary care doctor. Let them know the date of your surgery and who will be looking after him.

Create a "Care Binder": Put a bright folder on the kitchen counter. Include a list of all his medications, exact dosages, times he takes them, emergency contacts, and a brief description of what his seizures look like.

Assess His Seizure Triggers: Sleep deprivation, missed medication doses, and high stress can trigger seizures. His temporary caregiver must be strictly reliable with his medication schedule.

Proactive Options for His Care Support
You absolutely cannot lift, assist, or closely monitor him while recovering from hip surgery. You should explore these temporary care options immediately:

Short-Term Respite Care: Many assisted living facilities or nursing homes offer "respite stay" programs. Your husband can move into a professional facility for 2 to 4 weeks while you undergo surgery and finish your initial rehab.

Home Health Care Aides: If he stays home, you can hire a professional home health agency to send aides to the house to handle his meals, medication management, and daily safety monitoring.

Enlist a Family "Scheduler": If family or friends have offered to help, you should appoint one specific person to be the "Care Coordinator."
That person’s job is to build a calendar and schedule family members to take shifts staying with him, taking the pressure completely off you.

When you go in for her pre-surgery appointments, you should tell your orthopedic surgeon’s team:
"My husband has vascular dementia/epilepsy, and I am his primary caregiver. I need to speak with a hospital social worker or case manager to arrange temporary care for him while I recover."

The hospital's social work team can help you look into local respite care, coordinate home health aides, or find community resources covered by their insurance.

Housewife123, Think of worst case scenarios when you are in the planning stage. What happens to him if your surgery and rehab takes longer than anticipated? Make sure your legal documents are in order. Try to make it as easy as possible for others to manage your lives at this stage. Hopefully you have a POA who is willing and able to step up as needed.

Wishing you much success. This is a lot.