Having cancer surgery with kidney disease or dialysis | CION Cancer Clinics

Often, yes. Kidney disease and dialysis make cancer surgery more complex, but they do not rule it out on their own. Your surgeon, anaesthetist and kidney specialist plan together so your kidneys, fluids and blood salts are protected before, during and after the operation.

Why the kidneys matter during surgery

Healthy kidneys balance fluid, clear medicines from the body and keep potassium in a safe range. When they are weak, an operation can tip that balance. Blood pressure drops under anaesthesia, some painkillers and scan dyes strain the kidneys, and fluids given through a drip can build up instead of being passed as urine.

What your team is watching for

The main concerns are kidney function getting worse after surgery, potassium rising to a dangerous level, fluid collecting in the lungs, bleeding, and slower wound healing. People on dialysis also pick up infections more easily.

Not everyone faces the same risk

Mildly reduced kidney function found on a routine test needs much less planning than kidney failure on dialysis. A kidney transplant brings its own questions about anti-rejection medicines. Your team will tell you which group you are in.

Many medicines leave the body through the kidneys, so doses often need changing when kidney function is low. Always tell every doctor, pharmacist and nurse that you have kidney disease or are on dialysis.

Painkillers

Anti-inflammatory painkillers such as ibuprofen and diclofenac, sold as Brufen and Voveran among other names, can harm weak kidneys. Some strong painkillers also build up in the body. Your team chooses pain relief with your kidneys in mind, so do not take extra tablets bought at a pharmacy.

Contrast scans

The dye used in some CT scans can strain the kidneys. The team may use a different scan, give fluids before and after, or time it around your dialysis. Ask whether your scan uses contrast.

Antibiotics and blood thinners

Several are adjusted for kidney function. Never change a dose on your own; your doctors set it.

Who needs the most careful planning

People on dialysis who also have heart disease, diabetes affecting several organs, or poor nutrition face the highest risk. So do people having long operations on the belly or chest, where large fluid shifts are expected. For some of them, a smaller operation or a different treatment may be discussed. That is a decision for your team to explain, and this page cannot make it for you.

How your family can help

Keep a single folder with your latest kidney blood tests, your dialysis unit's name and schedule, every medicine strip and any transplant letters. Bring it to every appointment. Write down how much urine you pass each day if you still pass urine, and your usual weight after dialysis. These small details save time and help the team plan fluids safely.