Fasting Before Hypospadias Repair: Parent Guide

Fasting for this procedure

Hypospadias repair is done under a general anaesthetic, usually combined with a caudal or penile nerve block so your son wakes comfortable and needs very little pain medicine. Because his stomach must be empty, follow the children's 6-4-2 rule: no food, formula or milk other than breast milk for 6 hours before your arrival time, breast milk up to 4 hours before, and clear fluids (water or dilute squash, no fizzy drinks) up to 2 hours before. Sips of clear fluid up to the 2-hour mark actually help him feel better and settle faster, so don't stop them early. Work the exact clock times back from your admission time with our child fasting calculator.

Medicines to check

Keep giving his regular daily medicines as normal unless the surgical team has specifically told you to stop one, using a small sip of water within the clear-fluid window.

If your son takes a blood thinner or regular anti-inflammatory such as ibuprofen, mention it early, as these may need pausing before surgery to reduce bleeding into the repair, see medications to stop before surgery.

Bring his pain relief (paracetamol and, if allowed, ibuprofen) so you can give a dose at home before you set off if the team advises it.

For the rare child on diabetes medication, doses are adjusted while he fasts, see diabetes tablets before surgery.

If he uses any cream or steroid (some boys have a short course of testosterone or oestrogen cream beforehand to enlarge the tissue), tell the surgeon when he last used it.

Bring any inhalers and avoid surgery if he has an active chest infection, as anaesthetic is riskier with a wheezy chest.

When this surgery may be delayed

He has a cold, cough, fever or chest infection in the days before, which raises the anaesthetic risk and usually means rescheduling once he is well.

He has an active nappy rash, eczema flare or skin infection around the penis or groin, as broken or infected skin makes a clean repair and good healing much harder.

The fasting rule was not followed (an unplanned biscuit, sweet or milk), because a non-empty stomach is unsafe under general anaesthetic and the slot will be moved.

He is too unsettled or unwell on the day, or the team finds the tissue needs a pre-treatment hormone cream course first to enlarge the penis before operating.

An emergency case takes priority on the list, which can delay or postpone a planned day-case repair.

Reports & documents to carry

Any clinic letters, ultrasound or scan results and the consent or booking paperwork for the repair.

A list of his medicines, creams and any allergies, plus his red book or vaccination and growth record.

His comforter, a familiar toy or blanket, and a dummy if he uses one, to help him settle before and after.

Loose, soft clothing and spare nappies or pants a size larger than usual, to fit comfortably over the dressing and any catheter.

A change of clothes, his usual drinks and snacks for afterwards, and your contact and GP details.

What to ask your anesthesia team

Will my son go home the same day, and will he have a catheter or stent draining into his nappy when he does?

How do I care for the dressing and catheter at home, and what do I do if the dressing slips or the catheter falls out early?

What pain relief should I give, and how do I keep him comfortable when he passes urine in the first few days?

When can he go back to nursery or school, and how long must he avoid straddle toys, ride-ons and bikes?

What follow-up appointment will he have, and what signs of infection or bleeding mean I should call you sooner?

Your prep checklist

Tick things off as you sort them — saved on this device only, nothing is sent anywhere.

A general guide — your hospital's own instructions always come first.

Frequently asked questions

Will my son have a catheter and dressing after the operation?

Often yes. Many repairs are protected by a small catheter or stent that drains urine straight into his nappy, plus a firm dressing around the penis. This keeps the new repair dry and still while it heals. Both are usually removed after about 5 to 10 days, either at home following the nurse's instructions or at a quick clinic visit. Extra clear fluids afterwards keep the urine flowing and reduce stinging when he wees.

How soon can he use ride-on toys, bikes and trampolines again?

Avoid anything he straddles for about two to four weeks, so no ride-on cars, bikes, rocking horses, trampolines or playground saddles. Pressure or a knock to the healing penis can disrupt the stitches or cause swelling and bleeding. Gentle floor play, books and cuddles are fine from day one. Your surgeon will give an exact timescale at the follow-up, as it depends on how complex the repair was.

Is it safe to give clear fluids right up to two hours before?

Yes, and it genuinely helps. For children the 6-4-2 rule allows water or dilute squash until two hours before arrival, so a thirsty, frightened child is far more settled and his blood sugar stays steady. Stopping drinks too early only makes him miserable and harder to anaesthetise, without adding safety. Only fizzy drinks, milk (other than breast milk), juice with bits and food fall under the longer fasting windows.

Will weeing be painful for him afterwards, and how do I help?

Mild stinging for the first few days is normal as the repair settles, and the nerve block plus regular paracetamol keeps it manageable. Offer plenty of clear fluids so the urine is dilute and less sharp, and let him wee in a warm bath if that feels easier. Keep the area clean with each nappy change. Tell the team if weeing becomes very painful, the stream sprays oddly, or you see fresh bleeding.