Umbilical Vein Catheterization (UVC) Notes

Umbilical Vein Catheterization (UVC) Notes for Medical students and Graduates

a child with umbilical vein catheter insitu cc by 4 wikimedia

Purpose:

• For vascular access in neonates (especially preterm or critically ill).

• Used for fluid, blood, medication administration, exchange transfusion, and central venous pressure (CVP) monitoring.

Indications

• Emergency vascular access in neonates

• Exchange transfusion

• Administration of IV fluids, parenteral nutrition, inotropes, or antibiotics

• Blood sampling or transfusion

• Monitoring of central venous pressure

Contraindications

• Omphalitis or periumbilical infection

• Peritonitis

• Necrotizing enterocolitis (NEC)

• Umbilical or portal vein thrombosis

• Imperforate or absent umbilical vein

Anatomical Background

• Umbilical vein: single, large, thin-walled vessel at 12 o’clock position in the umbilical stump.

• Leads to left portal vein → ductus venosus → inferior vena cava.

• Two smaller umbilical arteries at 4 and 8 o’clock positions.

Equipment

• Sterile gloves, drapes, antiseptic solution

• Umbilical catheter (3.5 Fr for <1.5 kg, 5 Fr for >1.5 kg)

• Sterile scissors, forceps, and sutures

• 3-way stopcock and syringes

• Normal saline for flush

• Adhesive tape and umbilical tie

• Sterile dressing

Procedure Steps

1. Preparation

• Maintain aseptic technique.

• Place baby under radiant warmer.

• Monitor heart rate, SpO₂, and temperature.

• Restrain limbs gently.

2. Identify Vessels

• Clean umbilical stump with antiseptic.

• Trim cord to ~1–2 cm from skin margin.

• Identify one large thin-walled umbilical vein (12 o’clock) and two smaller thick-walled arteries (4 and 8 o’clock).

3. Catheter Measurement

• Measure insertion length:

  • Formula (Shukla’s):
    [
    Length (cm) = (3 × weight [kg]) + 9 text{ cm (for term)}
    ]
    or
    [
    Length (cm) = (1.5 × birthweight [kg]) + 5.6 text{ cm (for preterm)}
    ]

  • Aim: tip at IVC–right atrial junction (high position).

4. Catheter Insertion

• Tie umbilical tape loosely at the base of the cord.

• Gently dilate the vein with forceps.

• Insert catheter filled with saline (to prevent air embolism).

• Advance slowly until free blood return is obtained.

• For emergency use, low position (2–4 cm) acceptable until radiographic confirmation.

5. Confirmation of Position

• Aspirate blood freely (should not be pulsatile).

• X-ray (AP chest–abdomen) to confirm tip location:

  • High position: at T8–T9 (just above diaphragm).

  • Low position: at L3–L4 (below liver).

6. Secure Catheter

• Tie umbilical tape firmly around cord.

• Apply sterile dressing and tape catheter to abdomen.

• Connect to infusion system with 3-way stopcock.

7. Documentation

• Record catheter size, insertion length, date/time, and tip level on X-ray.

Complications

Early:

• Malposition → hepatic or portal vein perforation

• Air embolism

• Arrhythmia

• Bleeding or hematoma

• Infection (omphalitis, sepsis)

Late:

• Thrombosis or embolism

• Portal hypertension

• Hepatic necrosis

• Catheter-related bloodstream infection

Prevention and Care

• Strict asepsis

• Confirm tip location before infusion of irritants

• Daily check for signs of infection or leakage

• Remove within 7–10 days (preferably <5 days)

Radiologic Tip Positions

Key Notes

• Never use arterial catheter for IV infusion — risk of gut necrosis.

• Flush catheter with saline to confirm patency before use.

• If resistance is met → stop and recheck direction; never force insertion.

• In case of doubt, remove and reattempt under sterile precautions.