What Is a Catheter and What You Will Be Asked to Do

A catheter is a thin, flexible tube used in medicine to help drain fluids, deliver medications or nutrients, or access certain parts of the body. Catheters are commonplace in hospitals, clinics, and sometimes at home. Although the idea of having a tube placed in or near your body can sound daunting, understanding what a catheter does and how to care for it will help you feel more confident and comfortable throughout the process.

---

Common Types of Catheters

Catheters come in several forms depending on their purpose:

• Urinary (Foley) Catheter
  – Used to drain urine from the bladder when you cannot urinate naturally
  – May be indwelling (left in place for days or weeks) or intermittent (inserted when needed, then removed)
• Intravenous (IV) Catheter
  – Placed in a vein (often in the arm) to deliver fluids, medications, blood products or nutrition
  – Can be a short line (peripheral IV) or a long-term device (peripherally inserted central catheter, or PICC line)
• Central Venous Catheter (CVC)
  – Inserted into large veins (neck, chest or groin) for long-term medication, chemotherapy or dialysis
• Epidural Catheter
  – Placed in the space around the spinal cord to deliver pain relief medicines, often during labor or after surgery
• Chest (Thoracic) Catheter
  – Used to drain excess fluid or air from around the lungs

---

Why You Might Need a Catheter

Your healthcare team may recommend a catheter for several reasons:

• Urinary Retention: Inability to empty the bladder on your own
• Surgical Procedures: Monitoring urine output during and after surgery
• Medication Delivery: When oral or muscle injections aren’t suitable
• Pain Management: Continuous, targeted pain relief after certain surgeries
• Fluid Drainage: Removing fluid or air from body cavities (e.g., chest tube)
• Long-Term Treatments: Chemotherapy, parenteral nutrition or frequent blood draws

---

What to Expect: Before, During, and After Placement

Knowing what will happen can reduce anxiety. Below is a general outline, but always follow specific instructions from your healthcare provider.

1. Before Placement

• Medical History and Consent
  – Your doctor will review your medical history, allergies and medications
  – They will explain risks, benefits and alternatives; you’ll sign a consent form
• Preparation
  – You may be asked to empty your bladder beforehand (for urinary catheters)
  – Skin will be cleaned and sterilized around the insertion site
  – You might receive a mild sedative or local anesthetic to lessen discomfort

2. During Placement

• Positioning
  – You’ll be placed in a position that gives the clinician clear access (e.g., lying on your back)
• Insertion
  – A sterile, lubricated catheter is gently guided into your body
  – For IVs or central lines, a small needle creates the entry point before threading the catheter
• Securing the Catheter
  – Once in place, it may be taped or secured with a dressing to prevent movement
  – The other end connects to a drainage bag or infusion line

3. After Placement

• Monitoring
  – Staff will check for proper function, signs of leakage or swelling
  – Your comfort and vital signs (temperature, pulse, blood pressure) will be monitored
• Education
  – You’ll learn how to care for the catheter site, change dressings and handle any drainage bag
  – Ask for written instructions and a demonstration before you leave the hospital
• Regular Checks
  – Inspect the insertion site daily for redness, swelling, pain or unusual drainage
  – Observe urine, blood or fluid flow—note any changes in color, volume or odor

---

Caring for Your Catheter

Proper care helps prevent complications such as infections or blockages.

General Tips

• Wash your hands thoroughly before touching the catheter or site.
• Keep the area clean and dry; follow any instructions on how often to change dressings.
• Avoid tugging or kinking the tube; secure it with gentle tape or a catheter hold device.
• Ensure drainage bags are positioned below the insertion site (for urinary catheters) to allow gravity drainage.
• Never disconnect the catheter from the drainage system without instruction.

What to Watch For

Contact your healthcare provider immediately if you notice:

• Fever, chills or feeling unwell
• Redness, swelling, warmth or increasing pain at the site
• Cloudy, foul-smelling, bloody or reduced urine output (urinary catheter)
• Leaks, clots or no flow in your IV or drainage lines
• Any break in the catheter tubing or dressing

---

Tips for Comfort and Mobility

• Move Carefully: Sudden pulls or twists can dislodge the catheter.
• Dress Comfortably: Loose clothing reduces pressure on the site.
• Stay Hydrated: Unless otherwise directed, drinking adequate fluids can help keep urine flowing.
• Manage Pain: Use prescribed pain relief and apply ice packs (if advised) around an IV site to ease soreness.

---

Potential Risks and How They’re Minimized

While catheters are generally safe when cared for properly, some risks exist:

• Infection
  – Prevented through sterile technique, hand hygiene and proper dressing changes
• Blockage or Kinking
  – Regular flushing (for IV lines) and avoiding sharp bends minimize this risk
• Leakage
  – Secure taping and correct placement reduce accidental leaks
• Discomfort or Irritation
  – Adjustments to position, lubrication or a smaller-size catheter may help

Your care team takes every precaution to reduce these risks. Always follow their advice and report concerns promptly.

---

When It’s Time for Removal

Depending on the type of catheter and your condition, removal may happen:

• Automatically: Some catheters are designed to migrate out after a set time (e.g., certain nasogastric tubes).
• By a Clinician: Most IVs, central lines and urinary catheters are removed by a nurse or doctor.
• At Home: Intermittent urinary catheters are sometimes managed by patients or caregivers after training.

Removal is usually quick and involves gently pulling out the tube, applying light pressure to the site, and covering it with a sterile dressing. Mild soreness or spotting may occur but typically fades in a day or two.

---

Additional Resources

If you ever feel unsure about your symptoms, consider a free, online symptom check, using the doctor approved Ubie Symptom Checker. It can help you understand what might be happening and whether you should seek immediate care.

---

When to Speak to a Doctor

Catheters are helpful and generally low-risk when managed well. However, if you experience any serious signs—such as heavy bleeding, high fever, severe pain or inability to drain fluid—seek medical attention right away. Always speak to your doctor about anything that could be life threatening or serious, and follow their guidance for your specific health needs.