How Do a Bladder Diary and Urodynamic Testing Pinpoint Female Bladder Problems?

She has started mapping the city by its restrooms. The coffee shop near the office, the department store on the second floor, the gas station she would never otherwise visit. Then a sneeze on the train, and a damp, hot flush of embarrassment that has nothing to do with the weather. By the time she sits down with a clinician, she can describe the problem vividly, but describing is not the same as measuring.

That gap is exactly what bladder diary urodynamic testing is designed to close. One tool is a humble paper or phone log kept in the ordinary mess of daily life. The other is a short clinic study with sensors that read what the bladder is doing in real time. Neither replaces the other, and neither delivers a verdict on its own.

What follows explains what each test records, what the appointment feels like, who is usually offered it, and how the two sets of numbers get stitched into a diagnosis a treating team can act on.

Why a bladder problem needs measuring, not just describing

Bladder symptoms are famously poor at announcing their own cause. A woman who leaks when she laughs may have a weak urethral closing mechanism, a bladder muscle that contracts when it should not, or both at once. Two women with identical complaints can have opposite problems underneath, and the treatments pull in different directions.

Clinicians broadly sort leakage into a few mechanisms. Stress incontinence is leakage with physical effort such as coughing, lifting, or running, when pressure on the bladder outstrips the seal below it. Urgency incontinence is a sudden, hard-to-defer need to go, often followed by a leak before reaching the toilet; it usually sits under the umbrella of overactive bladder, a syndrome of urgency with or without leakage. Mixed incontinence is a blend. A fourth, quieter category is incomplete emptying, where the bladder never fully drains and spills over or triggers frequent trips.

The NIDDK notes that bladder control problems are common in women and tend to be under-reported, partly because many assume they are an unavoidable price of childbirth or age. They are not. But treating the wrong mechanism wastes months.

So the diagnostic question is rarely “is there a problem?” The woman already knows. The question is “which problem, and how severe?” A diary answers the pattern and frequency part from everyday life. Urodynamics answers the pressure and mechanics part under controlled conditions. Most guidelines, including those from NICE in the UK, start with the simpler tool and reserve the more invasive one for specific situations, which is why the order of the two matters as much as the tests themselves.

What is urodynamic testing, in plain language?

Urodynamic testing is a group of measurements that show how well the bladder stores urine and how well it releases it. The word sounds imposing; the idea is simple. The bladder is a muscular bag. Its job is to stretch quietly while filling, hold steady under pressure, then contract on command while the outlet relaxes. Urodynamics checks each of those steps with pressure sensors and a flow meter.

The NIDDK describes several components that a clinician may combine:

• Uroflowmetry: passing urine into a special toilet or funnel that records how fast the stream comes out and how much is produced.
• Post-void residual measurement: checking, by ultrasound or a small catheter, how much urine is left behind after urinating.
• Cystometry: slowly filling the bladder through a thin catheter while a sensor records pressure, capacity, and any unwanted contractions. A second small catheter in the rectum or vagina helps separate bladder pressure from pressure in the abdomen.
• Pressure-flow study: measuring pressure and flow at the same time while emptying, to see whether the muscle is pushing adequately and whether anything blocks the outlet.
• Electromyography (EMG): small skin patches or electrodes recording the electrical activity of pelvic floor muscles as they tighten or relax.
• Video urodynamics: adding X-ray or ultrasound imaging during filling and emptying so the team can see the bladder’s shape and whether the bladder neck opens under strain.

Not every woman has every part. A clinician chooses the components based on the symptoms, the diary, and the decision the results are meant to inform. The common thread is that each piece measures something a person cannot feel directly, which is why it is sometimes called the bladder’s stress test.

What should a healthy bladder diary look like?

People searching this question often expect a single ideal number. There is none, but there is a recognizable shape. According to the Cleveland Clinic and the NIDDK, most adults pass urine roughly six to eight times in 24 hours, typically no more than once overnight, with reasonably consistent volumes and little or no urgency. A healthy bladder holds about 1.5 to 2 cups before signaling a strong need, per the NIDDK.

A diary without a problem tends to show voids spaced a few hours apart, volumes that are not tiny, fluid intake spread through the day rather than concentrated in the evening, and no leak column entries. The bladder is doing its quiet, boring job.

Patterns that make a clinician lean forward include:

• Many small voids throughout the day: the bladder may be sensitive or contracting early, or the person may be going “just in case.”
• Large total output, often with large volumes each time: possibly simply drinking a great deal, or a medical reason for producing more urine.
• Normal daytime pattern but several nighttime trips: a shift of fluid handling into the night, which can relate to heart, kidney, or sleep factors rather than the bladder itself.
• Leaks tied to activity entries such as “coughing” or “lifting groceries,” with no urgency noted.
• Leaks preceded by “sudden strong urge,” sometimes triggered by running water or arriving home.

The last two bullets are the heart of the matter. A diary can separate stress-pattern leaks from urgency-pattern leaks with surprising clarity, often before anyone touches a catheter. The NHS describes the diary as one of the first steps in assessment for this reason, and treating teams frequently find it changes the direction of the conversation more than any other single piece of information.

How to keep a bladder diary for incontinence that your clinician can actually use

The most common diary failure is not dishonesty; it is vagueness. “Went a lot” helps no one. A usable diary is specific, continuous, and kept over enough days to capture a weekday and a weekend. The NHS suggests at least three days, and many clinics hand out a form built around that window.

A clinician-friendly diary records, for each entry:

• The time.
• What was drunk and roughly how much, including the type of drink.
• Each void and its measured volume, using a measuring jug or a collection hat that sits under the toilet seat.
• Any leak, how large (a few drops, a damp pad, soaked clothing), and what was happening at the time.
• The strength of urge on a simple scale, if the form asks for it.
• Pad changes, if pads are used.
• Bedtime and waking time, so nighttime trips can be counted properly.

Measuring volumes is the step most people skip, and it is the one that turns anecdote into data. Without volumes, a clinician cannot tell whether frequent trips reflect a small-capacity bladder or simply a large fluid intake. Many women are startled to discover their daily intake, once written down, is far higher or lower than they assumed.

Two practical points. First, keep the diary on ordinary days. Changing habits because the diary is watching defeats its purpose; the goal is a portrait, not a performance. Second, note the triggers honestly, even the awkward ones. “Leaked during sex” or “could not hold it while unlocking the front door” are clinically meaningful phrases, not confessions.

Phone apps exist for this, and some clinics accept them. The format matters less than the completeness. A legible paper grid with volumes beats a sophisticated app with gaps every time.

What actually happens during urodynamic testing, step by step

The appointment usually begins with the simplest measurement. The woman is asked to arrive with a comfortably full bladder and to urinate into a flow meter in a private room. The machine records speed and volume. An ultrasound scan or small catheter then checks what remains, giving the post-void residual.

Next comes the part people worry about most. Lying or sitting on an examination couch, she has a very thin, flexible catheter placed into the bladder through the urethra, and a second small pressure sensor placed in the rectum or vagina. Both are much narrower than the catheters used for draining a bladder. Sterile fluid is then pumped slowly into the bladder through the catheter.

During filling, the clinician or nurse asks questions at intervals: when do you first feel the bladder? When would you normally head to a toilet? When is the urge strong? When could you not hold on any longer? These sensation points are recorded alongside the pressure trace. The person may be asked to cough, bear down, or stand, so the team can watch whether the bladder leaks under effort and at what pressure.

If the bladder contracts on its own during filling, the trace shows a pressure rise that the person did not command. That is the signature of detrusor overactivity, the involuntary squeezing of the bladder muscle.

Finally, with the catheters still in place, she is asked to urinate into the flow meter. This is the pressure-flow study. It is an odd thing to do with an audience and a tube, and staff know it; most say “take your time” and step back or turn away. The catheters are then removed, which takes seconds.

The Mayo Clinic frames urodynamics as one of several tests that may follow the basic history, examination, urine sample, and diary. It is a detailed instrument, used when the detail matters.

How long does urodynamic testing take, and how to prepare?

The measuring part of a standard urodynamic study generally takes around 30 minutes, with the whole appointment often lasting about an hour once check-in, explanation, and changing are included, according to the Cleveland Clinic. Video urodynamics or studies that include EMG can run longer. Treat these as typical ranges, not promises; a slow-filling or very sensitive bladder changes the clock.

Preparation is light compared with many hospital tests. Typical instructions include:

• Arriving with a reasonably full bladder for the initial flow test, unless told otherwise.
• Bringing the completed bladder diary, because the team will compare its patterns with what the sensors record.
• Bringing a list of current medicines; some affect bladder muscle behavior, and the clinician may want to know rather than ask anyone to change anything.
• Letting the team know about pregnancy, recent urinary infection, latex allergy, or difficulty lying flat.
• Wearing comfortable, easy-to-change clothing.

A urine sample is usually checked before the study. If infection is present, the test is typically postponed, because an inflamed bladder behaves abnormally and the results would mislead. Some clinics offer a preventive antibiotic around the test; whether that applies is a decision for the treating team based on individual risk.

Fasting is not usually needed. There is no sedation, so driving home is normally fine. The NIDDK advises that most people return to normal activities the same day.

One underrated preparation step is mental. Knowing in advance that staff will ask you to cough, strain, and urinate while monitored makes the moment far less strange. Women who have read a plain description beforehand consistently report that the reality was less awkward than the anticipation, which is a good argument for reading one.

Is urodynamic testing painful? What it really feels like

Honest answer: uncomfortable in places, rarely painful. The catheters are narrow, and placement usually produces a brief stinging or pressure sensation that eases within moments. During filling, the predominant feeling is simply a full bladder, and then a very full bladder, because the team wants to see how the muscle behaves at the edges of capacity. Being asked to hold on while someone watches a screen tests patience more than pain tolerance.

The NIDDK describes mild discomfort during and shortly after the test as common. Specific sensations women mention include:

• A pinch or sting as the bladder catheter passes the urethra.
• An odd, pressured sensation from the rectal or vaginal sensor, more strange than sore.
• Strong urgency as filling continues, which is exactly what the team is trying to provoke and record.
• Mild burning with the first one or two trips to the toilet afterward.

Afterward, a small amount of pink-tinged urine for a day can occur from the catheter brushing the urethral lining. Drinking normally over the following hours helps flush the bladder; there is no need for heroic volumes.

The main risk is urinary tract infection, because any catheter can carry bacteria inward. It is uncommon, and the warning signs are discussed in the final section. Women with a history of frequent infections should say so beforehand, since this may change how the team prepares.

What about the embarrassment? It is real, and clinicians in this field hear about it daily. Pelvic floor and continence teams work almost entirely with women in this exact situation and tend to be practiced at keeping things matter-of-fact. Asking for a chaperone, a female clinician, or a moment alone before the voiding part are all reasonable requests, and asking is not a nuisance.

Bladder diary vs urodynamic testing: what each one measures

The two tools answer different questions, and seeing them side by side explains why clinicians rarely want one without at least considering the other.

Feature	Bladder diary	Urodynamic testing
Where	Home, ordinary routine	Clinic or hospital room
Duration	About 3 days of entries (NHS)	Roughly 30–60 minutes (Cleveland Clinic)
What it captures	Frequency, volumes, intake, leak triggers, nighttime pattern	Bladder pressure, capacity, sensation, involuntary contractions, flow, residual
Invasiveness	None	Thin catheters; mild discomfort
Main strength	Real life, over time, including behavior and habits	Direct measurement of mechanism
Main weakness	Depends on accurate record-keeping; cannot measure pressure	Artificial setting; a 30-minute snapshot may miss intermittent problems
Typical place in pathway	Early, before most treatment decisions	Selected cases, often before surgery or when the picture is unclear

Read across the rows and a pattern emerges. The diary is broad and shallow; it sees everything but cannot see inside. Urodynamics is narrow and deep; it sees inside but only for a short window on one day. A bladder that misbehaves at 3 a.m. after a cold evening may sit perfectly still on a warm examination couch at 11 in the morning. Conversely, a diary cannot tell whether leakage on coughing is due to a weak outlet or a bladder that squeezes whenever abdominal pressure jumps.

That is the practical argument for combining them. The diary tells the team where to look and sometimes makes further testing unnecessary. The urodynamic trace confirms, refines, or occasionally contradicts what the diary suggested, and a contradiction is useful information too.

Who is usually offered urodynamics, and who is usually asked to wait

Not every woman with leakage needs catheters and pressure traces. Major guidelines, including NICE, take a stepwise view: history, examination, urine test, and bladder diary first; conservative treatment next; urodynamics reserved for defined situations. The reasoning is that the test is somewhat invasive, carries a small infection risk, and for straightforward cases does not change what is done first.

Urodynamic testing is more commonly considered when:

• Surgery for stress incontinence is being planned and the diagnosis is not clear-cut, for example when urgency symptoms are mixed in or the examination does not demonstrate leakage.
• Symptoms suggest the bladder is not emptying properly, with a raised post-void residual or a weak, prolonged stream.
• Conservative measures and, where used, medicines have not helped as expected, and the team wonders whether the original working diagnosis was right.
• There is a neurological condition that can affect bladder nerves, such as multiple sclerosis, spinal injury, or Parkinson’s disease, where detailed pressure information guides safe long-term care.
• Previous pelvic surgery or radiation makes the anatomy or function harder to predict.
• There is significant pelvic organ prolapse alongside urinary symptoms.

Women who are usually asked to wait, or for whom testing may not be suggested at all, include those with clear, uncomplicated stress incontinence who have not yet tried pelvic floor muscle training, and those with classic overactive bladder symptoms who have not yet tried bladder training or lifestyle adjustment. For these groups, the NHS describes starting treatment based on the diary and examination, with further testing only if needed.

Testing is also typically postponed during an active urinary infection and sometimes during pregnancy. None of this is a judgment that symptoms are unimportant. It is a sequencing decision, and the treating team is the right place to ask why a particular step is or is not being offered now.

Reading bladder diary and urodynamic testing results together

This is where the two tools stop being separate tests and become one diagnosis. A clinician lays the diary’s story next to the pressure trace and looks for agreement, disagreement, and surprises.

Consider a few common pairings:

• Diary shows leaks with coughing and lifting, no urgency; trace shows leakage during cough with no bladder contraction. This points to stress incontinence from a weak outlet. The diary and the study agree, and the team can discuss options for the outlet rather than the muscle.
• Diary shows frequent small voids, sudden urges, leaks on the way to the toilet; trace shows involuntary pressure spikes during filling. This supports urgency incontinence with detrusor overactivity. Treatment conversations center on calming the bladder muscle and retraining habits.
• Diary suggests urgency; trace is quiet. Not unusual. Urgency can be felt without a measurable contraction on the day, or the problem may be sensory rather than motor. The diary carries weight here, and the team may still treat along overactive bladder lines.
• Diary shows many trips and dribbling; trace shows weak flow and a large residual. This raises incomplete emptying, where the bladder overfills and spills. Treating it as overactive bladder could make things worse, which is precisely why the measurement matters.
• Diary shows huge fluid intake and huge output. The bladder may be perfectly normal and simply overworked; the conversation turns to drinking patterns and sometimes to checking for medical causes of excess urine.

The Mayo Clinic describes incontinence treatment as depending on type, severity, and underlying cause, which is a polite way of saying that the label determines the plan. A woman who arrives with “I leak” leaves with something closer to “my bladder contracts early when it is about half full, and my outlet holds under cough.” That sentence is actionable in a way the first one never was.

What the following days and weeks usually look like

The hours after urodynamics are undramatic for most women. The NIDDK notes that mild burning or discomfort when urinating for a few hours is common, and that drinking fluids normally and resting if needed is usually all that is required. Faintly pink urine on the first day is within the expected range. Pads for a day are sensible, since a bladder that has just been filled and emptied under study may feel unusually sensitive.

Results are not always discussed on the spot. Some teams give an initial impression immediately; others review the traces alongside the diary, examination, and any imaging and arrange a follow-up conversation. Timeframes vary by service, so it is reasonable to ask before leaving when and how the results will be shared.

The weeks that follow depend entirely on what the combined picture showed, and this is where the diary earns its keep a second time. Many plans begin with conservative measures that the diary helps tailor:

• Pelvic floor muscle training, often supervised, which strengthens the muscles supporting the outlet and is the first-line approach for stress-type leaks in most guidelines.
• Bladder training, gradually lengthening the interval between voids to recondition an early-signaling bladder.
• Adjusting the timing and type of fluids revealed by the diary, such as shifting intake away from the late evening if nighttime trips dominate.
• Addressing constipation, weight, or coughing where these add pressure to the bladder.

Where a medicine is considered for urgency symptoms, it generally works by relaxing the bladder muscle or dampening its signaling, and clinicians usually describe a trial of several weeks before judging the effect. Whether a medicine is appropriate, which one, and for how long are decisions for the prescribing clinician.

Some women are asked to repeat the diary a few weeks into treatment. Comparing the before and after is one of the most honest measures of progress available, far more reliable than memory.

What people often get wrong about bladder testing and bladder health

“A drink can clean your bladder.” This is one of the most searched phrases around bladder health, and the premise is mistaken. The bladder is not a filter that accumulates residue; the kidneys do the filtering, and the bladder simply stores and releases what they produce. No juice, tea, or tonic scrubs it. Plain water in sensible amounts, spread across the day, supports normal urine production, and the NIDDK notes that very large intakes and bladder irritants such as caffeine or alcohol can worsen urgency for some people. Cranberry products are popular for infection prevention; the evidence is mixed and modest, and they do nothing for leakage mechanics.

“Drinking less will fix the leaking.” Restricting fluids concentrates urine, which can irritate the bladder lining and increase urgency, and it raises infection and constipation risk. The diary usually shows the problem is timing or pattern rather than total volume.

“The test will definitely find the cause.” Urodynamics is a snapshot. A quiet trace does not mean symptoms are imaginary; it means the bladder behaved on that day. The diary and history still count.

“If I pass the diary, I am fine.” A normal-looking diary with troubling symptoms still deserves attention. Diaries can miss intermittent problems, and some causes, such as infection or pelvic floor weakness, do not show up in a frequency chart.

“Leaking after childbirth or in later life is just how it is.” It is common, which is different from inevitable or untreatable. Guideline bodies consistently describe incontinence as a treatable condition with a range of options.

“Urodynamics is only for people heading to surgery.” Pre-surgical assessment is one use, but it is also valuable when symptoms are confusing, when emptying is in doubt, and in neurological conditions, as outlined above.

Questions to ask your care team before and after testing

A good appointment runs on good questions, and the awkwardness of the subject tends to make people ask too few. Writing them down beforehand helps.

Before the bladder diary:

• How many days do you want me to record, and should they include a weekend?
• Do you want measured volumes for every void, and how should I measure them?
• Should I change anything about what I drink while keeping it, or carry on as normal?
• Is there a particular trigger or symptom you want me to pay special attention to?

Before urodynamic testing:

• Which parts of the study are you planning for me, and what question is each one meant to answer?
• How will the results change what you recommend? Would the plan be different without them?
• Is there anything about my medicines or history that affects how the test is done?
• What should I do about arriving with a full bladder, and roughly how long should I expect to be there?
• Can I request a chaperone or a clinician of a particular gender?

After the results:

• In plain words, what did the diary and the study show my bladder is doing?
• Which type of leakage is this: stress, urgency, mixed, or an emptying problem?
• What are the first-line options for this type, and what does each involve week to week?
• Were there any findings that did not match my symptoms, and what do you make of that?
• Will I repeat the diary to track progress, and when?
• What signs should prompt me to contact you sooner than the next planned review?

None of these questions second-guess the clinician. They make the plan legible, and a legible plan is one a person can actually follow at home, which is where most bladder treatment happens.

When to call your doctor

Most of the time, bladder testing is a planned, low-drama process. A few situations call for contact without waiting for the scheduled follow-up.

After urodynamic testing, contact the team or seek care promptly if you notice:

• Fever, chills, or feeling generally unwell in the days after the test, which can signal a urinary infection introduced by the catheter.
• Burning or pain on urination that lasts beyond the first day or gets worse rather than better.
• Urine that stays visibly bloody, contains clots, or turns bloody after initially clearing.
• Inability to pass urine at all, or passing only small dribbles with a painfully full lower abdomen.
• New or severe pain in the lower abdomen, back, or flank.

Independently of testing, certain bladder symptoms deserve prompt medical attention whenever they occur, because they can point to conditions beyond ordinary incontinence. The NHS and Mayo Clinic both flag the following:

• Blood in the urine, visible or reported on a test, even once and even without pain.
• Sudden loss of bladder control alongside numbness in the saddle area, leg weakness, or loss of bowel control; this needs emergency assessment.
• Incontinence that appears abruptly after a fall, injury, or new neurological symptom.
• Repeated urinary infections.
• Unexplained weight loss or persistent pelvic pain accompanying bladder symptoms.

Leaking that is simply getting in the way of life is also a reason to ask for an appointment. It does not need to reach an emergency to deserve attention. Whether the next step is a diary, a study, a physiotherapy referral, or reassurance is a judgment for the clinician who knows the whole picture; this article describes how those tools work, not which one belongs to any individual reader.

Frequently asked questions

How painful is urodynamic testing?

Urodynamic testing is usually described as uncomfortable rather than painful. Placing the thin catheter can sting briefly, filling the bladder produces strong fullness and urgency on purpose, and mild burning with the first few trips to the toilet afterward is common, according to the NIDDK. Lasting pain, fever, or inability to urinate afterward are not expected and should be reported to the care team.

What should a healthy bladder diary look like?

A healthy diary typically shows roughly six to eight voids in 24 hours, no more than one overnight, moderate and fairly consistent volumes, fluid intake spread across the day, and no leak entries. It is a pattern rather than a single number. Clinicians look for clusters of small voids, nighttime trips, or leaks tied to coughing or sudden urge as clues to the type of problem.

What drink cleans your bladder?

No drink cleans the bladder. The kidneys filter blood and produce urine; the bladder only stores and releases it, so there is nothing for a beverage to scrub. Drinking plain water in sensible amounts through the day supports normal urine production. For some people, caffeine, alcohol, and very large fluid intakes aggravate urgency, which is one reason a bladder diary records what is drunk as well as what is passed.

How long does a urodynamic study typically last?

The measurement portion of a standard urodynamic study generally takes around 30 minutes, with the full appointment often closer to an hour once preparation and explanation are included, per the Cleveland Clinic. Studies with video imaging or EMG can take longer. These are typical ranges; a very sensitive or slow-filling bladder may extend the time, and the team will usually give an estimate beforehand.

What is urodynamic testing used for in women?

Urodynamic testing is used to show how the bladder stores and empties urine when symptoms alone do not make the mechanism clear. In women it helps separate stress incontinence from urgency incontinence, identify mixed patterns, detect incomplete emptying, and guide planning when surgery is being considered or when a neurological condition may affect bladder nerves. It is a selected test rather than a routine one.

Do I need a bladder diary for incontinence before seeing a specialist?

Many services ask for a bladder diary before or at the first specialist visit because it provides the frequency, volume, and trigger information that shapes the whole assessment. The NHS describes a diary of at least three days as a standard early step. If no form has been provided, a simple grid with time, drinks, measured voids, and leaks is usually welcomed by the clinician.

Can urodynamic testing cause a urinary tract infection?

Yes, uncommonly. Any catheter passed into the bladder can carry bacteria inward, so a urinary tract infection is the main recognized risk of urodynamics. Teams usually test urine beforehand and postpone the study if infection is present; some offer preventive measures for women at higher risk. Fever, chills, worsening burning, or cloudy, foul-smelling urine afterward should be reported promptly.

Why would my doctor skip urodynamics and start treatment from the diary?

Because for clear, uncomplicated cases the test rarely changes the first step. Guidelines such as NICE recommend beginning with pelvic floor muscle training for stress-pattern leaks and bladder training for urgency-pattern leaks based on history, examination, and diary. Urodynamics is reserved for mixed or confusing pictures, suspected emptying problems, neurological conditions, or planning before surgery. The treating clinician decides which path fits.

What if my urodynamic results do not match my symptoms?

This happens and does not mean the symptoms are unreal. Urodynamics is a short snapshot in an artificial setting, and a bladder that misbehaves at home may stay quiet on the day. Clinicians weigh the trace alongside the diary, examination, and history. A mismatch may lead the team to rely more on the diary, repeat the study, or look at other explanations.

Will I need to repeat the bladder diary after treatment starts?

Often, yes. Repeating the diary a few weeks into pelvic floor training, bladder training, or any medicine the prescribing clinician has chosen gives an objective comparison of frequency, volumes, and leaks against the baseline. Memory is unreliable for gradual changes, so the second diary is one of the most honest progress measures available. The timing of any repeat is set by the care team.

References

• NIDDK (NIH): Urodynamic Testing
• NIDDK (NIH): Bladder Control Problems in Women (Urinary Incontinence)
• NHS: Urinary incontinence – Diagnosis

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.