What is Dialysis in the ICU?
Dialysis in the ICU is a treatment used when the kidneys are not working properly. It helps clean the blood by removing waste products, extra fluid, and harmful chemicals.
Dialysis may be temporary — with kidney function recovering after the illness — or it may be part of long-term kidney care.
Why is Dialysis Needed?
- Sudden (acute) kidney failure — AKI
- Too much fluid accumulating in the body
- Dangerously high potassium or acid levels in the blood
- Kidney failure caused by sepsis, medications, or other critical illness
- Chronic kidney disease (CKD) requiring ongoing support
How is Dialysis Access Inserted?
A special catheter is placed in a large vein in the neck, chest, or leg using sterile technique. This gives the dialysis machine access to clean the blood and return it to the body.
Common Questions
| Is it painful? | Dialysis itself is not painful. Some patients feel tired or cold during the session. The ICU team monitors the patient closely throughout. |
| Is it permanent? | Sometimes dialysis is temporary and the kidneys recover. In cases of CKD, longer-term dialysis may be needed. |
| Can families be involved? | Yes. Families are encouraged to ask questions and be part of care decisions at all times. |
Risks
- Low blood pressure during the session
- Infection at the catheter site
- Bleeding
- Clotting of the filter or catheter
The ICU team takes active steps to prevent and monitor for all of these complications.
Note: This information provides general guidance and may not apply to every situation. Please speak to the medical team for advice specific to your loved one.