Pain Management After CRS/HIPEC

Managing pain is one of the most important parts of healing after Cytoreductive Surgery and/or Hyperthermic Intraperitoneal Chemotherapy (CRS/HIPEC). This surgery is extensive, and it’s normal to have concerns about what pain will feel like and how it will be controlled. The good news is that your care team uses multiple strategies to keep you as comfortable as possible while also supporting a safe and steady recovery.

Most patients find that pain improves consistently over the first several days and weeks. While discomfort is expected, pain should feel manageable and should not prevent you from moving, breathing deeply, or resting. This resource explains how pain is managed in the hospital, what to expect once you go home, and when you should reach out to your care team for help.

Why Pain Management Matters

CRS/HIPEC is one of the most extensive abdominal cancer surgeries, which is why pain management plays such a critical role in recovery. Pain control is not just about comfort — it plays a direct role in how well and how quickly you recover. When pain is managed effectively, it becomes easier to get out of bed, walk, breathe deeply, sleep, and eat. All of these activities are essential for restoring bowel function, preventing complications like pneumonia or blood clots, and supporting overall healing.

The goal of pain management is adequate and safe relief, not the complete elimination of all sensation. Some soreness, tightness, or pressure is normal after abdominal surgery. Your care team aims to keep pain at a level that allows you to stay active and engaged in your recovery.

How Pain Is Managed in the Hospital

Most CRS/HIPEC centers use what’s called multimodal pain control. This approach combines several types of pain relief that work together, providing stronger and more balanced control while reducing reliance on opioids.

Many patients receive epidural analgesia during and after surgery. An epidural delivers continuous numbing medication to the nerves that supply the abdomen. This often provides excellent control of deep abdominal pain, allows for easier breathing, and helps patients walk sooner. Epidurals usually remain in place for two to four days after surgery.

Some patients use a patient-controlled analgesia (PCA) pump, which allows you to press a button to receive a small, controlled dose of pain medication. These pumps are carefully programmed so you cannot receive too much medication. Many patients find that having control over their pain relief helps reduce anxiety during the early recovery period. Depending on the center, a PCA may be used instead of, or alongside, an epidural.

In addition to these methods, hospitals rely heavily on scheduled non-opioid medications. Medications like acetaminophen, certain anti-inflammatory drugs (when approved by your surgical team), and medications for nerve-related pain help reduce baseline discomfort and inflammation. These medications are key to minimizing the need for opioids.

Opioids are still used when needed, but in a targeted and limited way. They may be given before physical therapy or walking, when other medications aren’t enough, or at night to support sleep. The goal is to use the smallest effective dose to keep you comfortable and mobile.

Some surgical teams also use nerve blocks during surgery to reduce abdominal wall pain for several days afterward.

What Pain May Feel Like After CRS/HIPEC

Pain after CRS/HIPEC can feel different from person to person, but many patients describe deep abdominal soreness, muscle tightness around the incision, gas or bloating pressure, and back pain from positioning during surgery. Shoulder pain is also common and may be related to irritation of the diaphragm or gas retention in the abdomen.

Incision pain is one of the most common and expected sensations after abdominal surgery like CRS/HIPEC, and it can feel different than many people anticipate.

Most patients describe incision pain as a deep soreness or pulling sensation rather than a sharp pain. The area around the incision may feel tight, stiff, or tender, especially when changing positions, standing up, coughing, or taking a deep breath. This tightness often comes from the healing muscles and tissues beneath the skin, not just the skin itself.

It’s also common to feel burning, stinging, or tingling along the incision as nerves begin to heal. These sensations can come and go and may be more noticeable at night or when you’re resting. Some people notice areas of numbness mixed with sensitivity — both are normal parts of nerve recovery.

In the first days to weeks, incision pain often feels worse with movement and better when supported. Many patients find that gently holding a pillow against their abdomen when standing, walking, laughing, or coughing helps reduce strain and discomfort. As swelling decreases and healing progresses, the pain usually becomes less intense and more localized.

Over time, incision pain typically shifts from constant soreness to intermittent discomfort, often triggered by activity, stretching, or fatigue. Mild aches or pulling sensations around the incision can persist for weeks or even months, especially after longer periods of activity, but these usually continue to improve.

While incision pain should gradually get better, sudden worsening pain, increasing redness, warmth, drainage, or fever should always be reported to your care team, as these may be signs of infection or another complication.

These sensations often fluctuate from day to day but should gradually improve over time.

Pain Management After You Go Home

Before discharge, your care team will make sure you can manage pain safely at home. Most patients leave the hospital with a clear plan that combines medications, movement, rest, and daily self-care.

You may be given a scheduled medication routine that includes acetaminophen, an anti-inflammatory medication if approved, and possibly medication for nerve pain. A small amount of opioid medication may be prescribed for breakthrough pain. Taking medications on a schedule — rather than waiting until pain becomes severe — often provides better overall relief. Especially during the early stages of recovery, it is important to stay ahead of pain by staggering medications so they do not wear off at the same time. Setting reminders or alarms can be very helpful, as can keeping a written schedule to track which medications were taken and when.

Movement plays a surprisingly powerful role in pain control. Walking several times a day helps reduce gas pain, muscle stiffness, and incisional soreness. Even short, frequent walks can significantly improve comfort and reduce reliance on medication.

Some patients find relief using heat or ice, depending on their symptoms. Heat may help with muscle tightness or back pain, while ice can reduce incisional soreness or inflammation. Always check with your care team before applying heat or ice directly to your incision.

Sleep and positioning also matter. Using pillows to support your abdomen, placing pillows under your knees, or resting in a slightly reclined position can reduce strain and improve comfort. One patient recommended utilizing the “log roll technique” when getting in and out of bed. Doing the log roll prevents twisting, which is something you want to avoid while recovering. Quality sleep is a very important part of healing. Remember, quality rest gives your body the time it needs to heal, supporting tissue repair and healthy cell regeneration.

Good nutrition and hydration support pain control as well. Dehydration, constipation, and low calorie intake can all make pain feel worse. Small, frequent meals and steady fluid intake help your body heal and tolerate medications more effectively.

Opioids: What to Know

Opioids can be helpful for short-term, breakthrough pain, but they come with side effects. These may include nausea, drowsiness, mental fogginess, and constipation. Because opioids slow bowel function — a major concern after abdominal surgery — they are usually tapered off within one to two weeks for most patients.

If you are taking opioids, your care team will often recommend a bowel regimen to prevent constipation. Always follow guidance and let your team know if side effects become difficult to manage.

Non-Medication Strategies That Help

Many patients are surprised by how effective non-medication strategies can be. Gentle stretching, slow breathing exercises, guided imagery, warm showers, and support from physical therapy can all reduce pain. Emotional stress can intensify physical discomfort, so calming routines and moments of relaxation can be powerful tools during recovery.

When to Call Your Care Team

You should reach out to your medical team if pain suddenly worsens after improving, if nausea prevents you from staying hydrated, or if pain does not improve with prescribed medications. Signs of infection, such as redness, fever, or drainage from the incision, should always be reported. Difficulty breathing, chest pain, or pain so severe that you cannot walk are also reasons to call immediately.