How Long Should a Catheter Be Left In After Surgery?

For most surgeries, a urinary catheter should come out within 24 to 48 hours, and often sooner. The exact timing depends on the type of operation, whether you have an epidural in place, and a handful of personal risk factors, but the guiding principle across surgical specialties is consistent: the catheter should stay in for the shortest time that is safely possible. Every extra day it remains raises the odds of a urinary tract infection and slows your recovery in ways you can feel, from delayed walking to a longer hospital stay.

Why Every Extra Day Matters

The single biggest risk factor for a catheter-associated urinary tract infection is how long the catheter stays in.¹ Bacteria travel along the catheter surface and colonize the bladder over time. In one study of hospitalized patients, roughly 15 percent of those catheterized for three days developed a urinary tract infection, while about two-thirds of those catheterized for eight days did.² That jump from roughly one in seven to two in three is dramatic and explains why hospitals have invested heavily in protocols that remind nurses and doctors to pull the catheter as soon as it is no longer needed. Institutions that have adopted nurse-driven removal protocols have seen their catheter utilization rates drop and infection rates fall alongside them.³

Timelines by Type of Surgery

There is no single universal hour at which every catheter should come out. The timeline your surgical team follows depends on what was done, where in your body, and how much swelling or nerve disruption the procedure caused. Here is what the evidence supports for the most common categories.

Colorectal Surgery

Enhanced-recovery guidelines for colon surgery recommend removing the catheter at or before 24 hours. For rectal surgery, where the operation happens closer to the nerves that control the bladder, the recommendation extends to 72 hours or less.⁴ In practice, removal on postoperative day two appears reasonable for rectal procedures when no additional risk factors are present.⁵ A feasibility study of laparoscopic mid-to-lower rectal cancer surgery found an 89 percent success rate when catheters were pulled on postoperative day three, even in a population that included many men and patients who had undergone radiation beforehand.⁶ Factors that push the timeline later include being male, a history of difficulty urinating, and low rectal anastomosis or abdominoperineal resection.⁵

Gynecological and Pelvic Floor Surgery

After pelvic organ prolapse repair, there is a real tension between infection risk and the chance you will not be able to void on your own right away. A systematic review found that early removal (within about two days) cut the incidence of urinary tract infection roughly in half compared to leaving the catheter in longer, but it also roughly tripled the likelihood of needing re-catheterization.⁷ Three of six trials in that review also found that the early-removal group went home sooner. In a randomized trial of vaginal prolapse surgery using a suprapubic catheter, patients who started voiding trials on the first postoperative day had a shorter catheterization period (about two days versus three and a half) and a shorter hospital stay, with no increase in infections.⁸

For vaginal surgery specifically, a meta-analysis comparing removal at 24 hours versus removal after 48 hours or later found no meaningful difference in urinary retention rates.⁹ That suggests the catheter can safely come out at 24 hours for most vaginal procedures. A randomized trial of early voiding trials after pelvic floor reconstruction showed that patients who attempted to void sooner returned to spontaneous voiding about 17 hours faster and got out of bed earlier.¹⁰

Hip and Knee Replacement

When an indwelling catheter is used after total hip or knee replacement, removing it within 48 hours is the standard recommendation.¹¹ A meta-analysis of joint arthroplasty patients found that keeping the catheter in for 24 to 48 hours reduced postoperative urinary retention without raising infection rates.¹² There is a real question, though, about whether some patients need an indwelling catheter at all. A randomized trial found that placing a catheter during surgery and removing it on arrival to the ward did not reduce urinary retention compared with no catheter.¹³ For uncomplicated joint replacements, skipping the catheter entirely may be reasonable.

Radical Prostatectomy

Prostate removal is an outlier. Because the urethra is cut and reconnected to the bladder during surgery, the catheter needs to stay in longer to allow healing. The traditional standard has been seven to 14 days, but some centers have demonstrated safe removal as early as two to four days after laparoscopic prostatectomy without higher rates of incontinence, stricture, or urine leaks.¹⁴ Longer catheterization after prostatectomy has been linked to worse urinary continence in the short and medium term, although long-term continence eventually evens out.¹⁵ One randomized trial found that removing the catheter on postoperative day three after robot-assisted prostatectomy saved roughly €80,000 and over 400 hospital days per year at a single institution.¹⁶

Lung Surgery

After lobectomy, a randomized trial compared immediate catheter removal at the end of surgery to removal 24 hours later. The immediate-removal group had a shorter hospital stay (about six and a half days versus seven) and got out of bed sooner.¹⁷ A broader systematic review across surgery types confirmed the pattern: immediate removal tends to reduce time to first ambulation and shorten hospital stays without increasing the need for re-catheterization.¹⁸

The Urinary Retention Tradeoff

The reason catheters are not simply yanked out the moment surgery ends is that your bladder may not immediately be ready to work on its own. Anesthesia, pain medications, swelling, and nerve irritation from the operation can all interfere with normal voiding. After gynecologic surgery, a meta-analysis found that pulling the catheter within six hours roughly doubled the risk of urinary retention compared to leaving it longer.¹⁹ After laparoscopic colorectal resection with early catheter removal, about 9 percent of patients overall experienced retention, with rectal surgery patients at higher risk (around 18 percent) compared to colon surgery patients (around 6 percent).²⁰

Retention after catheter removal is usually temporary and treatable. The standard approach is to pass a catheter again briefly (in-and-out) or to replace the indwelling catheter for another day or two. It is uncomfortable but not dangerous, and it happens far less often than infection does when the catheter stays in unnecessarily. The medical teams weigh these probabilities against each other, which is why the optimal removal time is “as soon as possible” rather than “immediately.”

When an Epidural Changes the Equation

If you have a thoracic epidural catheter for pain control after abdominal or chest surgery, the timing of urinary catheter removal gets more complicated. Epidural analgesia can temporarily blunt the nerve signals that tell your bladder to empty, raising the risk of retention. A study of abdominal surgery patients found that when the urinary catheter was pulled before the epidural came out, the incidence of retention was higher.²¹ An updated meta-analysis across six studies confirmed a higher rate of retention with early removal during epidural use, though the infection rate was similar regardless of timing.²²

However, one randomized trial in patients with thoracic epidurals found that removing the urinary catheter within 48 hours, before the epidural stopped, resulted in a very low retention rate (about 2 percent in both groups), suggesting that early removal can still work safely in selected patients.²³ If you are receiving epidural pain relief, your team will likely coordinate the removal of both catheters, often pulling the urinary one around the same time or shortly after the epidural comes out.

Risk Factors That Predict Trouble With Early Removal

Not everyone faces the same odds of retention after the catheter comes out. Several patient and surgical factors make a difference. Older age and spine surgery (as opposed to other non-urological procedures) are independent predictors of failing a voiding trial.²⁴ After pelvic floor surgery, having an abnormal pre-surgery bladder residual volume or undergoing an incontinence procedure alongside the repair substantially raises the chance of failing a voiding trial.²⁵ In the colorectal setting, obesity, longer operative time, and higher anesthesia risk classifications made early removal less likely to succeed.⁶

Your surgical team should be considering these factors when deciding when to attempt catheter removal rather than applying a rigid clock to every patient. If you know you have a history of difficulty urinating, bring it up before surgery so the team can plan accordingly.

Does Time of Day Matter for Removal?

You might assume mornings are better because the doctor is around and the day shift can watch for problems. The evidence points the other way. In a randomized trial of patients after bladder neck surgery, removing the catheter in the evening did not increase retention compared to morning removal.²⁶ A separate study found that patients who had their catheters removed at midnight passed significantly more urine with their first and second voids and were discharged from the hospital earlier than patients whose catheters were removed at 6 a.m.²⁷ The thinking is that a full bladder naturally builds overnight, giving you a better first attempt at voiding. If your hospital still defaults to morning removal, the evidence suggests an evening or midnight removal is at least as safe and may help you go home sooner.

Skip the Clamping

Some hospitals have traditionally “trained” the bladder before catheter removal by clamping the catheter on and off for hours, letting the bladder fill and then draining it on a schedule. The idea is that this restores bladder tone before the catheter comes out. The evidence does not support this practice for short-term catheterization. A meta-analysis found that clamping before removal actually increased the risk of urinary tract infection and delayed the time to first void compared to simply letting the catheter drain freely until the moment of removal.²⁸ A systematic review came to a similar conclusion: for patients catheterized short-term, clamping provided no benefit in terms of retention, re-catheterization, or patient comfort.²⁹ If a nurse tells you they are going to clamp your catheter to train your bladder before taking it out, you can reasonably ask whether the practice is still part of the unit’s protocol given the current evidence.

When a Different Kind of Catheter Might Be Better

The standard urethral (Foley) catheter is not the only option. Two alternatives come up frequently in the research: suprapubic tubes and intermittent catheterization.

A suprapubic catheter enters the bladder through a small incision in the lower abdomen rather than through the urethra. After radical prostatectomy, men who received a suprapubic tube instead of a urethral catheter returned to continence faster (seven days versus 16) and were more likely to be continent when the catheter was removed.³⁰ A meta-analysis of robot-assisted prostatectomy patients found that the suprapubic tube was associated with less bother and discomfort at one week, with no difference in continence or complication rates.³¹ Suprapubic catheters also allow voiding trials without removing the tube, since urine can pass through the urethra naturally while the tube is simply clamped.

Intermittent catheterization, where a thin catheter is passed to empty the bladder and then immediately removed, avoids having any catheter sitting in the bladder between uses. A network meta-analysis found that both intermittent catheterization and suprapubic tubes carried a lower infection risk than a standard urethral catheter when catheterization lasted longer than five days.³² For shorter durations, the difference was less pronounced, which reinforces the point that the type of catheter matters most when the catheter is staying in for a while.

What Happens if the Catheter Stays Too Long

Beyond urinary tract infections, prolonged catheterization carries a list of complications that grows with time. A systematic review of non-infectious complications found that urine leakage around the catheter was common even in short-term use (affecting about one in ten patients) and far more prevalent in long-term catheter users (over half).³³ Urethral strictures, where scar tissue narrows the urethra, occurred in roughly 3 percent of short-term catheter patients in that review.

Long-term indwelling catheters, the kind measured in weeks and months rather than days, introduce even more serious problems: catheter blockages from mineral deposits and biofilm, bladder spasms that cause pain and leaking, loss of bladder capacity, urethral erosion, and a small but real increase in the risk of bladder cancer from chronic inflammation.³⁴ These catheters become coated with bacterial biofilm and mineral crystals that can obstruct the lumen entirely.³⁵ None of this is relevant to someone whose catheter comes out on postoperative day one or two, but it underscores why surgeons and nurses are motivated to avoid leaving catheters in “just in case.”

Getting Up and Going Home

One of the less-discussed benefits of early catheter removal is what it does for your mobility. A catheter bag tethered to your leg or bed is a practical obstacle to walking, and walking is one of the most important things you can do after surgery to prevent blood clots, speed gut recovery, and reduce your overall complication rate. After lobectomy, patients whose catheters were removed immediately walked sooner than those who kept the catheter for a day.¹⁷ After pelvic floor reconstruction, patients who had early voiding trials ambulated sooner and more often.¹⁰ These are not dramatic differences in isolation, but they feed into a cascade of recovery milestones that collectively determine when you leave the hospital.

Hospital stays across multiple surgery types tend to be shorter when the catheter comes out earlier. In one gynecologic study, the difference was about half a day. In the prostatectomy trial, the savings scaled up to over a day per patient on average. Even the vaginal prolapse trial with suprapubic catheters showed a meaningful shortening of stay when voiding trials began on day one.⁸ From a patient standpoint, going home a day sooner is often the most tangible benefit of early removal.

What You Can Do as a Patient

If you are preparing for surgery, ask your surgical team what their catheter protocol is. Enhanced-recovery programs build catheter removal timelines into the plan before you even enter the operating room, and hospitals that follow these programs consistently see better outcomes.⁴ If your catheter is still in and no one has mentioned removing it, it is perfectly appropriate to ask whether it is still needed. A catheter that was placed for monitoring urine output during surgery is easy to forget about once the operation is over, and sometimes a gentle reminder from the patient is what triggers the order to remove it.

If you have risk factors for retention, like a history of enlarged prostate, prior urinary problems, or if you are undergoing surgery near pelvic nerves, the catheter may justifiably stay in longer. But “longer” still usually means a few days, not a week. The goal is not zero catheter time. It is zero unnecessary catheter time, and understanding that distinction puts you in a better position to have a productive conversation with your care team.