Nursing · Adult clinical nursing
Slow messages, wide reach, and two emergencies that move in minutes
In the exams: Saudi Nursing Licensure Examination: Adult health nursing (The largest area)
Diabetes affects hundreds of millions of people and a large proportion do not know they have it. Thyroid disease is among the commonest conditions anywhere. This is not a specialist subject a nurse meets occasionally — it is present in every clinic and on every ward, and it declares itself through exactly the things nurses record daily: weight, appetite, thirst, urine volume, temperature, pulse, mood and skin. A pattern assembled across days by the person doing the observations is frequently what prompts the investigation. And the emergencies are fast: glucose falling too low threatens the brain within minutes, and the emergencies of very high glucose kill through dehydration as much as through sugar. Both are recognised and treated by whoever is present, which is almost always a nurse.
Hormones travel in the blood and act on any cell able to receive them, so a disorder of one small gland produces effects across the whole body at once. That is why endocrine disease presents as weight, mood, energy, bowels, periods, skin and heart all changing together, and why it is so often attributed to something else for months.
Diabetes alone affects hundreds of millions of people and a large proportion do not know they have it. Thyroid disorders are among the commonest conditions in general practice. This is not a specialist subject that a nurse meets occasionally; it is present on every ward, in every clinic, in every second patient.
Weight, appetite, thirst, urine volume, temperature, pulse, mood, sleep and skin are the things nurses record daily, and endocrine disease declares itself in exactly those. A pattern assembled across days by the person doing the observations is frequently what prompts the investigation.
A person with diabetes spends a few hours a year with clinicians and every remaining hour managing it themselves. That makes teaching, and finding out what is actually happening at home, more consequential than anything adjusted in a clinic room.
Glucose that falls too low threatens the brain within minutes, and the emergencies of very high glucose kill through dehydration as much as through sugar. Both are recognised and treated by whoever is present, which is almost always a nurse.
One hormone lowers blood glucose by moving it into cells; several others raise it by releasing stores. The balance keeps the level within a narrow band through eating, fasting, exercise and illness, and almost every problem in this chapter is that balance failing in one direction.
Injury, infection, pain and stress release hormones that raise glucose even in people without diabetes, because the body is mobilising fuel. That is why glucose is monitored in acutely unwell patients generally rather than only in those with a diagnosis.
Unlike muscle, the brain holds almost no reserve and depends on a continuous supply from the blood. That single fact is why low glucose produces confusion and unconsciousness quickly, and why it is treated before anything else in a collapsed patient.
A finger-prick meter is accurate enough for routine decisions and least accurate at the extremes, which is exactly where decisions matter most. A very high or very low reading in an unwell patient is confirmed rather than acted on alone.
Poor circulation, a cold or swollen hand, squeezing the finger hard enough to dilute the drop with tissue fluid, and sugar left on unwashed skin all produce a wrong number for entirely mechanical reasons. Washing and drying the hand first is not fussiness.
Alcohol blocks the liver's release of stored glucose and can cause a low many hours later, typically overnight, while simultaneously producing exactly the confusion and unsteadiness that make bystanders assume intoxication rather than illness. The combination is one of the more dangerous in this subject.
In one form the cells that make insulin are destroyed, usually by the body's own immune system, and the person cannot survive without replacement. It tends to appear in younger people, over weeks, with dramatic thirst, weight loss and passing large volumes of urine.
In the far commoner form the body becomes resistant to its own insulin while gradually making less. It develops over years, frequently without symptoms, and is strongly associated with weight, inactivity, diet and family history — and it is now appearing in children, which it did not used to.
The two differ in cause, speed, age of onset, body shape, emergencies and treatment. Treating them as one disease with a spectrum leads to a young person with rapid weight loss being managed as though they had years to adjust, which is how a preventable death happens.
Raised glucose appearing during pregnancy affects the baby's growth and the delivery, and it identifies a woman at high risk of developing lasting diabetes later. It is screened for because treating it changes outcomes, and because the later risk is preventable if anybody tells her.
Above a certain level glucose spills into urine and drags water with it, so the person passes large volumes and becomes thirsty and dry. Meanwhile cells cannot use glucose, so fat and muscle are broken down for fuel and weight falls. Three symptoms, one mechanism.
Glucose falling too low is the metabolic emergency most likely to be encountered on any ward and the one most easily reversed. It is usually caused by treatment rather than by disease — a dose given without food, a missed meal, unusual exertion, or vomiting after treatment.
Sweating, tremor, hunger, a racing heart, then confusion, slurred speech, aggression, drowsiness and unconsciousness. The behavioural changes are frequently mistaken for drunkenness, rudeness or a psychiatric problem, and that misreading costs time the brain does not have.
In a patient with diabetes who is behaving oddly, glucose is checked immediately and treated without waiting for anything else. Treating a low glucose that turns out to be normal harms nobody; waiting to be sure while somebody is hypoglycaemic causes brain injury.
Rapid sugar corrects the immediate problem and wears off, so it is followed by longer-acting carbohydrate unless a meal is imminent. Omitting that second step produces a patient who recovers, is left alone, and drops again an hour later.
People who have had repeated low glucose can stop experiencing the early warning symptoms and go straight to confusion without any warning at all. That is dangerous, it is a reason to review treatment rather than to blame the person, and it is found by asking whether they still feel it coming.
An unconscious or fitting patient must not be given anything by mouth, because it will go into the lungs. Nothing is placed in the mouth of somebody who cannot protect their airway, and gel smeared inside the cheek of a deeply unconscious person is not a safe substitute for the route that is actually indicated.
Without enough insulin the body breaks down fat rapidly and the products are acidic. The patient becomes profoundly dehydrated and acidotic, breathes deeply and rapidly to compensate, vomits, has abdominal pain, and has a characteristic smell on the breath.
What kills is the dehydration and the salt disturbance as much as the glucose, and the fluid deficit is frequently litres. Replacing fluid is the first priority, and a plan that concentrates on the sugar while the circulation fails has the order wrong.
In older people, glucose can rise extremely high with severe dehydration and much less acid, developing over days, with confusion and drowsiness dominating. It carries a high mortality, it is frequently precipitated by an infection nobody found, and it is easily mistaken for a stroke or dementia.
Treatment drives potassium into cells and the level can fall sharply even when it looked normal or high at the start. That is why potassium is measured repeatedly during treatment and why the monitoring is not optional.
These emergencies are almost always triggered by something — infection, a missed dose, a heart attack, or a new illness. Treating the glucose without finding what caused it means treating the same patient again next week.
Illness raises glucose even when somebody is not eating, so insulin is usually still needed and is frequently the thing people stop. Knowing what to do when unwell — keep taking treatment, test more often, drink, and when to seek help — prevents a large proportion of emergency admissions.
Advice built around foods a household does not eat, cannot afford or does not cook is advice that is ignored. Working from what somebody actually eats towards something better, in their own cuisine, is slower and it is the version that changes anything.
Activity lowers glucose during and for hours afterwards, which is beneficial and can cause a low. People need to know to test around exercise and to adjust, rather than being told simply to be more active and left to discover the rest.
Nerve damage removes the sensation that warns of injury and poor circulation prevents healing, so a small wound becomes an ulcer and an ulcer can end in amputation. Looking at the feet at every contact, including between the toes, is one of the highest-value examinations in medicine.
Rules about driving with diabetes, working at height, shift patterns and fasting differ by country and by treatment, and are frequently never discussed. A person who has been told nothing makes their own rules, which are usually either needlessly restrictive or unsafe.
Sustained high glucose damages blood vessels, which is why complications appear in the eye, the kidney, the nerves, the heart and the feet — every one of them a vascular consequence. Understanding that makes an apparently random list into one disease.
Damage to the small vessels at the back of the eye is a leading cause of blindness in working-age adults and is symptomless until it is advanced. Screening finds it while it is treatable, which is why eye appointments are part of diabetes care rather than an optional extra.
Protein leaking into the urine is one of the earliest signs and appears years before any symptom. Detecting and treating it slows progression substantially, which makes a urine test at a routine appointment one of the highest-return few minutes in the subject.
Numbness, burning pain and loss of protective sensation, usually beginning in the feet and symmetrical. It causes both the pain that keeps people awake and the silent injuries that become ulcers, and patients are frequently told nothing can be done when in fact the pain has specific treatments.
Most people with diabetes die of cardiovascular disease, and they present atypically — breathlessness or fatigue rather than chest pain, because nerve damage blunts the warning. That is why blood pressure and lipids are treated as aggressively as the glucose.
Thyroid hormone determines the rate at which the body works, so too much produces weight loss, heat intolerance, tremor, fast heart rate, diarrhoea and anxiety, and too little produces the reverse — weight gain, cold intolerance, slowing, constipation, dry skin and low mood.
The symptoms are general and are attributed to age, depression, stress or simply being busy. An underactive thyroid in an older person looks like decline and in a younger woman looks like depression, and both are diagnosed by a blood test nobody ordered.
The gland's output and the signal driving it are interpreted together, because a gland can be failing while the signal driving it is very high. One value alone is close to meaningless, which is why the request is for more than one number.
An enlarged thyroid may be due to iodine deficiency, to autoimmune disease, or to nodules, and a rapidly growing or hard lump needs assessment. Iodine deficiency remains a major cause worldwide and is prevented at population level by iodised salt rather than clinically.
Severe untreated overactivity can produce a crisis with fever, agitation, a very fast heart and heart failure, and severe untreated underactivity can produce profound slowing with hypothermia and reduced consciousness. Both are rare, both are precipitated by illness or surgery, and both kill.
The adrenal glands sit on top of the kidneys and produce hormones controlling salt and water, the stress response and glucose. Failure produces fatigue, weight loss, low blood pressure, salt craving and darkened skin, and is frequently diagnosed only when a crisis arrives.
A person whose adrenal glands cannot respond to stress collapses with low blood pressure, vomiting and confusion when they become ill, and it is rapidly fatal without treatment. Somebody with known adrenal insufficiency who becomes unwell is an emergency rather than a routine admission.
Somebody taking steroid medicine for weeks stops producing their own, so stopping suddenly, or failing to increase the dose during illness or surgery, causes the same crisis. This is one of the most important medication facts a general nurse can hold.
A patient admitted on long-term steroids who has them omitted because nobody realised, or because they were nil by mouth, can deteriorate dangerously. Checking that a steroid has actually been given is a genuine safety check rather than a formality.
Excess steroid, whether from disease or from treatment, produces weight gain around the trunk, a rounded face, thin skin that bruises, raised glucose and blood pressure, bone loss and mood change. Recognising the pattern in somebody on long-term treatment prompts a review.
The pituitary sits at the base of the brain and controls several other glands, so disease there produces failure of thyroid, adrenal and reproductive function together. Because it sits next to the visual pathways, an enlarging tumour can also cause a characteristic loss of the outer fields of vision.
Loss of the hormone that tells the kidney to conserve water produces very large volumes of dilute urine and desperate thirst, and it is distinguished from diabetes by the glucose being normal. The similarity of the names causes real confusion and real delay.
The opposite problem — retaining water inappropriately — dilutes the blood's sodium and causes confusion, drowsiness and seizures. It is common in hospital, has many causes including several medicines, and is one of the reasons a confused patient has their sodium checked.
Cells adapt to a low sodium over days, and raising it quickly injures them severely and sometimes permanently. This is one of the clearest cases in medicine where eagerness to fix a number is the hazard, and correction is deliberately slow and monitored.
In all of these conditions, an accurate record of what went in and what came out, totalled rather than merely recorded, is the clinical evidence. Daily weight adds to it, because rapid weight change is water rather than tissue.
Four small glands behind the thyroid control calcium, and calcium controls how readily nerve and muscle fire. Too little produces tingling, cramps and, at the extreme, spasm of the airway. Too much produces thirst, constipation, confusion, stones and bone pain.
Thyroid surgery can damage or remove these glands, so calcium is watched closely afterwards. Tingling around the mouth and in the fingers in the hours after neck surgery is a specific finding that needs reporting rather than reassuring.
Much of the calcium in blood is attached to a protein and only the unattached portion is active, so a patient with low protein can have a low total and a normal active level. Acting on the total figure alone means treating something that is not there.
Bone loss is silent until something breaks, and the first fracture is frequently the diagnosis. Risk rises with age, after the menopause, with long-term steroids, with immobility and with poor nutrition, and much of the prevention is weight-bearing activity, calcium and vitamin D rather than anything prescribed.
Most vitamin D is made in skin exposed to sunlight rather than eaten, so deficiency is common in people who cover their skin, stay indoors, or live where sunlight is weak for much of the year. It is cheap to correct and frequently never looked for.
The pituitary drives the ovaries and testes with the same kind of signal it uses for the thyroid, so pituitary disease shows up as absent periods, infertility or loss of libido. Those complaints are frequently treated as gynaecological or psychological when they are the first sign of a gland failing.
A menstrual history is endocrine information. Periods that stop, become irregular, or become very heavy point towards thyroid disease, raised prolactin, ovarian disorders or severe weight loss, and asking about them costs one question.
Irregular periods, difficulty conceiving, excess hair growth and weight gain together form one of the commonest hormonal disorders in women of reproductive age, and it also carries a substantially raised risk of later diabetes. Many women carry it for years with each symptom addressed separately.
Falling hormone levels produce hot flushes, sleep disturbance, mood change, joint pain, urinary symptoms and accelerating bone loss. Treating it as an inevitability to be endured rather than a hormonal state with options is a failure of information, not of medicine.
Loss of libido, erectile difficulty, fatigue and loss of muscle are rarely volunteered and almost never asked about, so male hormonal deficiency goes undiagnosed. A direct, unembarrassed question, asked privately, is the entire diagnostic step.
Appetite, satiety, fat storage and energy expenditure are hormonally controlled, and those signals differ genuinely between people. A clinician who believes weight is purely a matter of self-discipline gives advice that does not work and then attributes the failure to the patient.
Excess fat tissue is metabolically active and drives insulin resistance, raised blood pressure, disturbed lipids and inflammation. That cluster, rather than the weight itself, is what causes the disease, which is why waist measurement carries more information than weight alone.
Unintentional weight loss with a good appetite points towards overactive thyroid or new diabetes. Unintentional gain with fatigue and cold points towards underactive thyroid. The direction plus the appetite narrows it enormously before any test.
Several treatments for diabetes cause weight gain and several cause loss, and a person who was not told this experiences it as a betrayal. Saying it in advance turns an alarming side effect into an expected one.
Weight conversations that shame people cause them to avoid healthcare, which is precisely the opposite of the intention. Asking permission to discuss it, using neutral words, and focusing on what changes rather than on the number is not politeness — it is what keeps the person coming back.
A child developing the insulin-dependent form becomes ill over days to weeks — thirst, large volumes of urine, bed-wetting in a previously dry child, weight loss and tiredness. Those symptoms are regularly treated as a urinary infection while the child slides towards a metabolic emergency.
Height and weight plotted over time reveal thyroid disease, growth hormone problems, steroid excess and chronic illness earlier than almost anything else. A growth chart that is actually plotted rather than merely recorded is a diagnostic tool.
Puberty arriving very early or failing to arrive needs assessment rather than reassurance, because it may indicate a treatable hormonal cause and it has lasting effects on final height and on the young person's experience of themselves.
A teenager managing diabetes is negotiating independence, peer visibility, changing hormones and a condition that punishes inconsistency. Confrontation about readings reliably reduces honesty, and a young person who stops telling the truth about their glucose is in more danger than one whose control is imperfect.
Young people frequently disengage at the point of transfer between children's and adult services, and that is when complications accumulate silently. A planned handover with overlap, rather than a discharge letter, is the intervention.
Glucose control in the earliest weeks, frequently before a pregnancy is known, affects how the baby's organs form. That makes contraception and pre-pregnancy planning part of diabetes care for every woman of reproductive age, discussed rather than assumed.
Insulin needs rise substantially as pregnancy advances and then fall sharply after delivery, so a dose that was correct becomes wrong in both directions. A woman who has not been warned about the fall after birth is at real risk of a severe low.
Untreated thyroid underactivity in pregnancy affects the baby's brain development, and the requirement for treatment usually increases. It is one of the clearest examples in medicine of a cheap test preventing permanent harm.
Babies of mothers with diabetes are at risk of low glucose in the hours after birth, and are frequently large, which complicates delivery. Feeding early and checking the baby's glucose are routine for that reason rather than out of excess caution.
A woman who had diabetes during pregnancy has a high risk of developing lasting diabetes within a decade, and that risk is reducible. Telling her clearly, and arranging follow-up testing, is a preventive intervention that is very frequently omitted.
Thirst sensation declines with age, so an older person with very high glucose may not drink enough to compensate and dehydrates faster. Symptoms that would be obvious in a younger person appear as confusion, falls or simply not being themselves.
In frail older people, the risk of a low glucose causing a fall, a fracture or a hospital admission can outweigh the long-term benefit of tight control. Relaxing targets deliberately in advanced frailty is careful medicine rather than giving up.
Older patients frequently accumulate treatments prescribed over years, and the doses that were appropriate then may now cause lows as kidney function declines and appetite falls. A review that asks whether each treatment is still needed is itself a clinical intervention.
An underactive thyroid in an older person produces slowness, cold, constipation, low mood and poor memory — which is to say it looks exactly like what everybody expects of age. It is diagnosed by somebody deciding to check rather than by the symptoms standing out.
Reduced vision, stiff joints and tremor mean an older person may be physically unable to inspect their own feet, read a meter or draw up a dose accurately. Asking them to demonstrate rather than to confirm reveals that immediately.
One glucose value describes one instant, which is why patterns across the day and across weeks carry the information. A person judged on isolated readings is judged on the least informative data available.
A blood test reflecting average glucose over the preceding weeks to months is used because it cannot be improved by good behaviour the day before. It is misleading in some blood disorders, in pregnancy and in kidney disease, which is why it is interpreted alongside everything else.
Devices that read glucose continuously reveal overnight lows and post-meal peaks that finger-prick testing never showed. They also produce large quantities of data that can overwhelm both patient and clinician if nobody agrees what is being looked for.
Some glands are assessed by provoking them or suppressing them and observing the response, because a resting level says little. These tests depend entirely on samples being taken at the correct times, which makes the nurse's timing the test.
A correctly performed hormone test on an incorrectly labelled or wrongly timed sample produces a confident wrong answer that may be acted on for months. This is unglamorous and it is where a large share of diagnostic error in this subject originates.
Insulin causes more serious medication harm than almost anything else in hospital, through wrong units, wrong type, wrong timing and confusion between similar names. Independent checking exists because the consequence of a tenfold error is measured in brain injury.
Writing units in a way that can be misread as a zero has killed people. This is the single clearest example of handwriting as a patient safety issue, and the rule exists because of real deaths rather than for tidiness.
Some treatments must be given in a fixed relationship to a meal and become dangerous when the meal does not arrive. A dose given to a patient who is then sent for a procedure and misses lunch is a predictable and preventable low.
A fasting patient on glucose-lowering treatment needs a written plan rather than an assumption, and the commonest harm is a dose given as usual to somebody who will not eat for hours. Asking for the plan before the fast begins prevents it.
If a treatment is not given — because the patient was away, refused, or was fasting — the omission and the reason must be recorded and handed over. An unexplained gap on a chart is read as given by the next person, and that is how a dose is duplicated or a crisis is caused.
Teaching that begins with what the person currently does, rather than with what they should do, finds the actual problem within a minute. It is also the only way to discover that they have been doing something unsafe for months.
Explaining a technique and asking whether they understood produces yes almost every time. Watching them perform it reveals the reversed step, the missed cleaning, the site never rotated. The demonstration back is the teaching, not the explanation.
A newly diagnosed person absorbs very little at once, and everything taught during the initial shock has to be taught again. Planning for repetition is realistic rather than inefficient.
In most households one person decides what is eaten, and it is frequently not the patient. Dietary teaching delivered only to the patient is delivered to the wrong person, and that alone accounts for a great deal of apparent non-adherence.
Instructions given only verbally are gone by the following day, and instructions written in a language somebody reads with difficulty are decorative. Pictures, and the person's own language, are not a nicety in a subject this dependent on self-management.
In many places insulin is intermittently available or unaffordable, and a person without it dies. Advice written as though supply were guaranteed is advice that cannot be followed, and the honest response is to say what is possible rather than what is ideal.
Insulin keeps better cool and can be stored using simple evaporative methods where refrigeration is unavailable. This kind of practical, locally achievable instruction changes more outcomes than any refinement of a regimen.
Monitoring supplies are frequently the limiting expense, and a person rationing strips is testing at the wrong moments. Teaching which single daily test is most informative, rather than insisting on a schedule they cannot afford, is the useful intervention.
Where people work barefoot or in fields, foot injury is close to inevitable and inspection matters even more. Advice to wear well-fitting shoes needs to be accompanied by something achievable — daily looking, immediate washing, seeking help early.
A patient who is promised care that does not exist loses trust in everything else said. Naming the gap honestly, and helping them plan around it, preserves the relationship that the rest of their care depends on.
Surgery combines fasting, stress hormones raising glucose, and treatments that lower it, which is why a written plan is made in advance. Patients with diabetes are frequently scheduled first on a list for exactly this reason.
Postoperative glucose rises even in people without diabetes, and raised glucose after surgery is associated with poorer wound healing and more infection. That is why it is measured in surgical patients generally.
Somebody on long-term steroids needs a plan for additional cover around the stress of surgery, because their glands cannot mount the response themselves. Missing this produces a collapse in recovery that looks like bleeding or sepsis.
Both severe overactivity and severe underactivity make anaesthesia hazardous, which is why elective surgery is usually deferred until the thyroid is stable. Recognising an untreated presentation before a list rather than during it is the nursing contribution.
The plan made the day before is useless if the person doing the fasting, the theatre team and the recovery nurse have not all received it. Most harm here is a communication failure rather than a clinical misjudgement.
Thyroid disease, steroid excess and steroid deficiency all produce mood change, and a psychiatric diagnosis made without checking them can be a hormonal illness left untreated for years. A blood test before a label is cheap insurance.
Diabetes requires decisions many times a day, indefinitely, with visible consequences for failure. Exhaustion with that is normal, has a name, and responds to being acknowledged rather than to being urged to try harder.
Low mood reduces self-care, which worsens control, which worsens mood. Treating the depression frequently improves the diabetes more than any adjustment to treatment does, and it is missed because nobody asks.
Insulin can be deliberately omitted to lose weight, which is dangerous and desperately under-recognised. Unexplained poor control with weight loss in a young person is a reason to ask gently rather than to increase the dose.
Saying that this is genuinely hard, and meaning it, changes what a person is willing to tell you. In a condition where the clinical information comes almost entirely from the patient's own account, that is not a soft skill.
Eyes, kidneys, feet, blood pressure and lipids are checked on a schedule because every one of those complications is silent until it is advanced. A review attended is worth more than any single consultation about symptoms.
People who move, who work shifts, who cannot afford transport, who have no phone, and who feel well are the ones who disappear from clinics — and they are the ones who return with an ulcer or failing kidneys. Noticing an absence is clinical work.
A note saying the glucose was high says almost nothing. A note saying it is high every morning but normal by evening, and that she stopped eating breakfast a fortnight ago, is the diagnosis and the treatment plan together.
A referral that omits the duration, the current treatment, what has already been tried and what the patient is actually worried about generates an appointment that achieves nothing. The specialist can only work with what was written down.
The list in the record and the tablets in the house are frequently different, and the difference is the clinical finding. Asking somebody to bring everything they take, including things bought without prescription, resolves more confusion than any test.
An endocrine patient's important facts — the steroid that must not be missed, the fasting plan, the low overnight — live in handover rather than in any single observation. A handover that lists tasks without these has passed on the work and not the risk.
Chronic endocrine disease is managed over decades, and the clinician who knows what this person's ordinary looks like detects change earliest. Continuity is not sentiment; it is a diagnostic instrument that cannot be replaced by a test.
Notes are written for somebody who has never met this patient and has four minutes. Plain language, the actual plan, and what to do if it does not work are what make a record useful rather than merely complete.
Recognising and treating low glucose, the emergencies of high glucose as fluid problems, foot care in diabetes, steroid rules during illness, and the general presentation of thyroid disease. The scenarios reward order of actions.
Waiting for confirmation before treating a suspected low glucose; treating a high-glucose emergency as a sugar problem rather than a fluid one; stopping steroids abruptly; reading one thyroid value alone; missing the atypical heart attack in somebody with nerve damage.
Check the glucose, treat immediately if low, then give longer-acting carbohydrate, replace fluid before chasing sugar, find the precipitant, look at the feet, and never omit a steroid without a plan.
Wash and dry the hand before a finger prick. Look between the toes. Ask whether they still feel a low coming. Ask what they actually eat. Check that the steroid was given. Each takes under a minute.
In endocrine disease the pattern across days — weight, thirst, urine volume, appetite, mood, temperature — is the diagnosis, and that pattern exists only because somebody recorded the observations properly rather than approximately.
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