Children compensate, and then they do not
Children hold their observations steady while deteriorating and then fail abruptly, which means the skill that saves them is noticing the early, soft, easily-dismissed signs. Most deaths in children under five worldwide are from a small number of causes that are preventable or treatable, and the person who usually meets the child first is a nurse.
A child's cardiovascular system compensates for illness and fluid loss with remarkable efficiency, raising the heart rate and constricting the peripheries to hold the blood pressure at a normal value. It does this until the reserve is gone, at which point the blood pressure falls and the child deteriorates very fast. The consequence for practice is the single most important idea in this subject: a normal blood pressure in a sick child is not reassurance, it is the expected finding right up until the moment it is a catastrophe. What you watch instead are heart rate, respiratory rate, work of breathing, peripheral perfusion, capillary refill and level of alertness.
Children have proportionally larger heads and tongues, narrower and more easily compressed airways, softer and more compliant chest walls, and a larger surface area relative to their mass. Each of these changes a nursing action. Head position for airway opening differs. A small amount of airway swelling produces a large reduction in flow, because resistance rises steeply as the radius falls. A compliant chest wall means a child in respiratory difficulty shows visible indrawing rather than simply breathing harder. A large surface area means a child loses heat and fluid far faster than an adult in the same room.
Adults in cardiac arrest have usually arrested from a cardiac cause; children have usually arrested from a respiratory one, after a period of deteriorating breathing or of shock. This changes both prevention and response. Prevention means that recognising and treating respiratory difficulty early prevents most paediatric arrests. Response means that ventilation is given greater emphasis in paediatric resuscitation than in adult resuscitation, and that a child found in arrest has usually been unwell for some time rather than having collapsed suddenly.
Fluids, medicines and equipment sizes are all determined by weight, which means an accurate current weight is a clinical measurement rather than an administrative one. Estimating a child's weight introduces error into every subsequent calculation. Where a child cannot be weighed, services use validated estimation methods; guessing is not one of them. A student should form the habit of asking what the child's weight is before asking anything else about treatment.
A great deal of paediatric assessment is done from the doorway, before the child has been upset by being handled. Is the child alert and interested, or floppy and uninterested? Is the breathing quiet or noisy, easy or laboured? What colour are they? Are they crying strongly or weakly, and does the cry sound normal? Children who are seriously unwell look seriously unwell to an experienced observer, and building that observation habit early is more valuable than any single measurement.
A parent has watched this child every day of their life and knows what normal looks like. A parent who says this is not how my child usually is, is giving you a clinical finding, and dismissing that account is a documented cause of preventable child deaths in several national reviews. The correct response is to take it seriously and to assess, and to say so explicitly to the parent, because a parent who is dismissed once does not raise the alarm the second time.
Respiratory rate counted over a full minute while the child is settled. Work of breathing, which means looking for indrawing between and below the ribs, flaring of the nostrils, grunting, and the use of neck muscles. Heart rate. Capillary refill. Temperature. Conscious level. Urine output, which in an infant means asking how many wet nappies. These are the findings that move early, and every one of them can be obtained without a laboratory.
Assessment that frightens a child produces both a distressed child and an unreliable examination. Getting down to their height, speaking to them rather than only to the parent, examining on the parent's lap where possible, leaving the most intrusive parts until last, and explaining in words they can hold on to — all of these improve the quality of the findings as well as the experience. A nurse who is good with children gets better data, which is a clinical argument and not only a humane one.
Children's pain is systematically under-recognised and under-treated, particularly in infants and in children who cannot describe it. Assessment uses age-appropriate tools, behavioural observation, and the parent's interpretation. A child who has gone quiet and still is not necessarily comfortable; withdrawal is a recognised response to pain in children and is often mistaken for settling. Asking about pain at every assessment, and believing the answer, is part of the job.
The World Health Organization's integrated approach to childhood illness is built around a short list of danger signs that can be checked anywhere by anyone trained, without equipment: a child who is unable to drink or breastfeed, who vomits everything, who has had convulsions, who is lethargic or unconscious. Any one of these means the child is severely ill and needs urgent referral regardless of what else is found. The value of this list is that it works in a clinic with nothing in it, and every nurse should be able to recite it.
Where imaging is not available, pneumonia in children is identified clinically, principally by counting the respiratory rate against the threshold for the child's age and by looking for chest indrawing. This is the basis of case management programmes that have reduced child deaths substantially. The nursing skills involved are simple and frequently done badly: counting for a full minute, with the chest exposed, while the child is calm rather than crying.
Prolonged capillary refill, cool peripheries with a narrowing difference between core and peripheral temperature, tachycardia, weak pulses, reduced urine output and altered consciousness. Blood pressure is a very late sign. The commonest cause worldwide is fluid loss, and the commonest source of fluid loss is diarrhoea. Recognition is the nursing contribution; fluid resuscitation is prescribed and weight-based, and no figure for it appears in this manual.
Fever is a sign, not a diagnosis, and the height of a fever is a poor guide to how serious the illness is. What matters more is how the child looks and behaves, whether there are danger signs, the age of the child, and whether a source is apparent. Fever in a very young infant is treated with far more caution than the same fever in a toddler, because the young infant's ability to localise infection is poor and the signs are non-specific. Treating the number rather than the child is a common error.
Children deteriorate fast and recover fast, and the cost of escalating a child who turns out to be well is far lower than the cost of the reverse. Services with paediatric early warning systems formalise this. Where no such system exists, the professional obligation is unchanged: a nurse who is worried about a child should say so, to somebody senior, at the time, and should keep saying so if the child does not improve. Persisting after being reassured once is a recognised and necessary behaviour.
Diarrhoeal disease remains one of the leading causes of death in children under five, and almost all of those deaths are from dehydration, which is treatable with a solution that costs very little. That gap between an available treatment and a continuing death toll is a problem of recognition, access and education rather than of medicine, which places it squarely in nursing territory.
General condition and alertness, sunken eyes, the child's thirst and ability to drink, skin pinch returning slowly, reduced urine output, and in infants a sunken fontanelle. Weight change is the most accurate measure where a recent weight exists. Classification into degrees of dehydration drives the management plan, and the classification is made from these clinical signs, which is precisely why they are taught in this form — they work where nothing else is available.
Oral rehydration solution is the first-line treatment for most dehydration in children and works because glucose and sodium are absorbed together across the gut wall even when the gut is inflamed. Giving it successfully is a nursing skill: small amounts frequently, by spoon or cup, continuing after each loose stool, persisting through vomiting because small volumes are usually tolerated, and teaching the parent to continue at home. Zinc supplementation is part of national programmes in many countries; the regimen is the one your programme specifies.
A child who is severely dehydrated, shocked, unable to drink, or vomiting everything needs intravenous or intraosseous fluid under protocol. Recognition and escalation are the nursing role. Continuing to attempt oral rehydration in a child with danger signs is a dangerous delay, and this is one of the clearest examples in paediatrics of a treatment that is correct for one severity and harmful for another.
Stopping feeds during diarrhoea was once common advice and is now understood to cause harm, because the child loses weight, the gut heals more slowly and malnutrition deepens. Breastfeeding continues throughout, and other feeding is resumed as soon as it is tolerated, with an extra meal a day during recovery. Teaching this to a family is a genuine intervention, because traditional advice in many communities still says otherwise.
Noise on breathing in tells you the narrowing is in the upper airway; noise on breathing out tells you it is lower down. This single distinction organises most of paediatric respiratory assessment and directs the urgency. Upper airway obstruction in a child can progress to complete obstruction quickly, and a child with severe upper airway obstruction is kept calm and undisturbed, in the position they choose, usually on a parent's lap, because distress worsens the obstruction and an ill-judged examination can precipitate complete closure.
Recession between the ribs and below them, nasal flaring, grunting, head bobbing in infants, tracheal tug, and the inability to feed or speak in sentences. Grunting in an infant is a particularly important sign and is frequently missed because it is quiet; it is the sound of a child trying to hold their own airways open and it means the child is seriously unwell. A child whose work of breathing suddenly reduces while they remain unwell is not improving, they are tiring, and that is an emergency.
Wheeze in children has several causes and the management is protocol-driven. Nursing contributions are assessment of severity, correct inhaler or spacer technique, which is done badly by a very large proportion of families, recognition of deterioration, and education about triggers and about what to do at home when it worsens. Teaching a family to recognise a severe attack and act on it prevents more admissions than anything done during an admission.
Oxygen saturation is useful and it is not the whole assessment; a child can be maintaining saturation through enormous effort that they cannot sustain. Reading the number without looking at the child is the characteristic error of monitored care. Oxygen is a treatment with indications, targets and a plan for weaning, and in a small number of conditions unrestricted high-concentration oxygen carries its own risks, which is why targets are set.
Plotting weight, length or height, and head circumference against a growth chart over time detects problems long before they become visible. A single measurement means little; a trend that flattens or falls means a great deal. Growth monitoring is one of the highest-yield activities in child health and it is frequently reduced to a number written in a book without anybody plotting it, which discards the entire value of the exercise.
Undernutrition is described in terms of wasting, which is low weight for height and indicates acute loss; stunting, which is low height for age and indicates chronic deprivation; and underweight, which combines both. The distinction matters because they reflect different histories and require different responses. Malnutrition underlies a large share of child deaths without usually being recorded as the cause, because it is the condition that turns a survivable infection into a fatal one.
A severely malnourished child is physiologically abnormal in ways that make ordinary treatment dangerous. Feeding too fast can be fatal, fluid handling is altered, infection may be present without fever, and hypothermia and low blood sugar are common. This is why severe acute malnutrition is managed by strict national protocol with phased feeding, and why a nurse must follow that protocol rather than improvise from general principles. Knowing that the ordinary rules do not apply is the most important thing a student can carry from this section.
Early initiation of breastfeeding, exclusive breastfeeding for the first months, and continued breastfeeding alongside appropriate complementary foods afterwards are recommended globally on strong evidence. The nursing work is practical support, honest information, and not undermining a mother's confidence. Where formula is used, safe preparation matters enormously and matters most where clean water is least reliable.
Deficiencies of iron, vitamin A, iodine and zinc have large effects on child health and are addressed through national programmes. A nurse should know their own country's programme in detail, because delivering it is usually a nursing task and coverage depends on whether the nurse in the clinic knows what is due today.
Immunisation prevents millions of deaths a year and is among the most cost-effective interventions in health. For a nurse, it is also among the most routine, which is the danger: a routine task done without attention produces missed doses, wrong intervals and children who leave unprotected. Every contact with a child is an opportunity to check what is due.
Most vaccines lose potency if they become too warm and some are damaged by freezing. Maintaining and monitoring the cold chain is a nursing responsibility in most services, and a vaccine that has been out of range has been given to a child who now believes they are protected and is not. Temperature records are not paperwork, they are the evidence that the programme worked.
A large amount of missed immunisation results from false contraindications: a mild illness, a low-grade fever, a course of treatment, or a previous mild reaction. Knowing which are real and which are not, in your own national schedule, prevents children being turned away and returning later or never. Genuine contraindications exist and are specified in the schedule; a nurse should know both lists.
Refusal and hesitancy are increasing in many countries and are rarely changed by being contradicted. What works better is listening to the specific concern, answering it honestly including acknowledging what is genuinely uncertain, and making a clear recommendation. A parent who feels heard often returns; a parent who feels dismissed does not, and takes their other children with them.
Hospitalisation is frightening for a child in ways that adults consistently underestimate, and the distress has measurable effects on recovery, on feeding and on behaviour afterwards. Keeping parents present, maintaining routines where possible, explaining procedures honestly in age-appropriate terms, and not lying about whether something will hurt are all clinical interventions. A child who is told something will not hurt and then finds that it does will not trust the next thing anybody says.
Play is how children process what is happening to them and how they maintain development during admission. Services with play specialists have children who cope better with procedures and need less restraint and sedation. Where no such role exists, nurses do it, and the time is repaid in cooperation.
Holding a child for a procedure is common, frequently necessary and easy to do badly. Preparation, explanation, the parent's presence where they wish it, positions that give the child some control, distraction, and adequate pain relief all reduce the amount of holding needed. Prolonged forcible restraint for a routine procedure is a sign that the preparation was inadequate, not that the child was difficult.
Legal authority to consent for a child rests with parents or guardians, with variation by country and by the child's age and understanding. Within that framework, children have a right to be informed and to have their views taken seriously in proportion to their maturity. A nurse who explains to the child as well as to the parent is meeting an obligation, not being charming.
A child goes home to be cared for by somebody who must know what to watch for, what to do, and when to return. Discharge teaching that consists of handing over a leaflet has not happened. Asking the parent to say back what they will do, in their own words, is the check that it has, and it takes a minute.
Development proceeds in a predictable order with a wide range of normal timing, and it is the sequence and the trend that matter rather than an exact age. Loss of a skill already acquired is never normal at any age and always requires assessment. This manual deliberately prints no age thresholds, because the ranges are wide and a table produces both false alarm and false reassurance.
Children with physical, sensory, intellectual or developmental disability use health services more than other children and are frequently served worse by them. They are at higher risk of pain being missed, of communication being directed past them to a carer, and of their normal baseline being mistaken for their current state. Asking the carer what this child is like when well is the assessment that prevents most of those errors.
Children with chronic illness and their families accumulate expertise that frequently exceeds that of the staff caring for them on any given day. Treating that expertise as a resource rather than as interference produces better care and fewer conflicts. It also matters for transition: young people moving to adult services do badly when the move is administrative rather than prepared, and preparing it is nursing work.
Serious illness in a child affects the whole family, and siblings are frequently overlooked. Income is lost, other children are cared for by relatives, and parents are separated for long periods. A nurse who asks how the rest of the family is managing is doing something clinically useful, because the sustainability of care at home depends on it.
Children are harmed by the adults responsible for them, in every country and every social class, and the health service is frequently the only place outside the home where a child is seen by a professional. That makes recognition a duty rather than a specialty. A nurse who decides that safeguarding is somebody else's job has removed one of the few protections a child has.
Injuries that do not fit the account given, injuries in a child not yet mobile, delay in seeking care, inconsistent accounts, injuries in unusual sites, repeated attendance, neglect of basic needs, a child who is unusually withdrawn or unusually indiscriminate with strangers, and a carer's behaviour that is frightening or dismissive. No single sign proves anything, which is exactly why the response is to record carefully and to refer, not to investigate.
Record what you saw and what was said, using the words actually used, and record it at the time. Do not interrogate the child or ask leading questions, because that can both distress them and damage any later process. Follow your local safeguarding route, and do it promptly. Share the concern with the designated person in your service. Your duty is to raise the concern, and it is not conditional on being certain.
Raising a safeguarding concern about a family you have cared for is uncomfortable, and worrying about being wrong is the most commonly given reason for not doing it. The correct framing is that you are not making an accusation, you are passing an observation to a system designed to assess it. Every national review of child deaths finds professionals who were concerned and did not say so.
Most deaths in children under five worldwide come from a short list: complications of prematurity, birth events, pneumonia, diarrhoea, malaria in endemic areas, and malnutrition underlying most of the rest. A nurse who becomes genuinely excellent at recognising and managing this short list saves more lives than one who has broad knowledge of rarer conditions. This is not a lowering of ambition; it is where the deaths actually are.
Counting breaths, looking for indrawing, checking whether the child can drink, pinching the skin, feeling the peripheries, looking at the fontanelle, checking alertness, and weighing. Every one of these is free and every one of them detects serious illness. Structured approaches built around exactly these findings exist because they work where laboratories and imaging do not, and they should be learned properly rather than treated as a simplified version of real assessment.
Where a clinic is hours away, what the family knows determines when the child arrives. Teaching danger signs — cannot drink, vomits everything, convulsions, unusually sleepy, fast or difficult breathing — turns a parent into an early warning system. This is among the highest-value things a nurse does in a day and it takes two minutes per family.
Working where the oxygen has run out, the referral vehicle has no fuel and the nearest paediatrician is a day away is demoralising, and pretending otherwise helps nobody. What holds up is doing the available things well, documenting shortfalls so they are visible to whoever can address them, and refusing to normalise the gap. A nurse who records that a child was referred and could not be transported has created the evidence that eventually changes something.
Infection in the first weeks of life presents without localising signs and progresses quickly. A young infant with fever, or with a temperature that is abnormally low, or who is feeding poorly, or who is unusually sleepy or irritable, is treated as seriously unwell until assessed, regardless of how well they look between episodes. This caution is deliberate and is built into guidance in every country, because the alternative — waiting for a clear sign — reliably arrives too late in this age group.
The classical picture taught in textbooks is the picture in older children and adults. In infants the signs are non-specific: poor feeding, irritability that worsens when handled, a high-pitched cry, temperature instability, drowsiness and a bulging fontanelle. Neck stiffness may be entirely absent. A non-blanching rash in an unwell child is an emergency at any age and should never be watched to see whether it develops further. A nurse's contribution is speed of recognition and immediate escalation, because outcome depends heavily on how quickly treatment begins.
In endemic areas malaria is a leading cause of death in young children and must be considered in any child with fever, including children who have travelled from an endemic area to one that is not. Severe malaria presents with reduced consciousness, convulsions, difficulty breathing, severe anaemia or inability to drink, and it deteriorates fast. Diagnosis and treatment follow national protocol and no regimen appears in this manual; the nursing role is recognition, rapid testing where the service provides it, escalation, and supportive care while treatment is arranged.
Measles remains a major killer of children where immunisation coverage is incomplete, and complications including pneumonia, diarrhoea, severe malnutrition and encephalitis are what cause the deaths rather than the rash. Children with measles are highly infectious and require airborne precautions, which in many settings means practical isolation and careful triage at the door. The connection between an outbreak and a fall in coverage is direct, which is why a nurse delivering routine immunisation is doing outbreak prevention.
Children with tuberculosis frequently present without the classical picture: poor weight gain, persistent cough, prolonged fever, and lethargy, often in a child known to be in contact with an adult case. Contact tracing is where children are found, and asking who else in the household is unwell is a question that finds cases nobody would otherwise have looked for. Treatment is lengthy and adherence support is largely nursing work.
Nearly half of all deaths in children under five occur in the first month of life, which makes the newborn period the highest-risk phase of childhood by a wide margin. Babies discharged home well can deteriorate within days from infection, jaundice, feeding failure or an undetected congenital problem, and the family may have no way of judging which is happening. A nurse seeing a newborn brought back to a clinic should assume the parents are right to be there and should assess rather than reassure, because the signs at this age are non-specific and the deterioration is fast.
A newborn who is not feeding is a newborn who is becoming hypoglycaemic, dehydrated and jaundiced, and the three reinforce each other. The assessment is practical: watch a feed rather than ask about it, check the attachment, weigh the baby against the birth weight, ask how many wet nappies and how many stools, and ask the mother how she is finding it. Feeding problems are very often solved by positioning and support rather than by anything medical, and a mother who is told her milk is insufficient without anybody watching a feed has usually been failed.
Jaundice in newborns is common and usually harmless, and occasionally it is neither. Jaundice appearing in the first day of life, jaundice that deepens rapidly, jaundice in a baby who is unwell or feeding poorly, and jaundice that persists beyond the expected period all require assessment rather than reassurance. Untreated severe jaundice causes permanent brain injury, and the treatment is straightforward if the baby reaches it in time, which makes this one of the clearest examples in the whole of child health of harm caused purely by delay.
Some congenital heart conditions, gut obstructions and metabolic disorders present days after birth, once the circulation has adapted or feeding has established. The presentations are non-specific — poor feeding, breathlessness, sweating with feeds, vomiting that is persistent or discoloured, failure to pass stool, collapse — and the baby is frequently sent home once before the diagnosis is made. A nurse who documents carefully and escalates a baby who has come back for a second time has done the thing that most often shortens that delay.
Adolescents fall between paediatric and adult services in most countries and are poorly served by both. They attend less, disclose less, and are less likely to return after a bad experience than any other age group. The practical consequences for a nurse are specific: see them without a parent present for at least part of the consultation, explain confidentiality and its limits clearly at the start, and do not talk about them in the third person while they are in the room.
Injury, self-harm and suicide, sexual and reproductive health, substance use, mental illness, and the chronic conditions of childhood becoming unmanaged as supervision reduces. Note how little of this is treated by medicine and how much of it is addressed by somebody asking a direct question in private. An adolescent who is never asked about mood, about safety at home, or about sexual health will not raise those things unprompted.
Adolescence is when adherence to long-term treatment most often breaks down, and the reasons are developmental rather than moral: a desire not to be different, a reasonable wish for autonomy, and a brain that weights immediate experience more heavily than distant consequence. Responding with warnings usually fails. Responding by negotiating a regimen the young person can actually live with, and by transferring responsibility gradually rather than abruptly, usually works better.
An adolescent who does not know what you will do with what they tell you will tell you very little, and an adolescent who is promised absolute secrecy and then finds it broken will never trust a health worker again. The professional answer is to say at the start, in plain words, what stays between you and what does not: that you will keep what they say private, and that if they tell you somebody is hurting them or that they are in danger, you will have to involve someone else, and you will tell them before you do it. Said early and honestly, this increases disclosure rather than reducing it, because it replaces an unspoken risk with a known rule.
Young people with long-term conditions do measurably worse around the point of transfer to adult care, and the damage is done when the move is treated as administrative. Preparation over time, a named person on each side, an overlap rather than a cut-off, and ensuring the young person can describe their own condition and treatment are what make it work. This is nursing work and it is rarely anybody else's.
Count the respiratory rate for a full minute. Look at the chest, not just the monitor. Ask the parent what this child is like when well, and believe the answer. Ask about wet nappies. Weigh the child. Say out loud when you are worried, and say it again if nothing has changed. None of these require equipment and all of them detect deterioration earlier than the things that do.
A child who cannot drink or feed. A child who vomits everything. Convulsions. Lethargy or reduced consciousness. Grunting. Reduced work of breathing in a child who is still unwell. A parent who says this is different. These are the findings that should convert a routine assessment into an urgent one, and none of them are subtle once you know to look.
Paediatric resuscitation, weight-based calculation, cannulation in small children and the management of severe acute malnutrition are all practical competencies with protocols, taught and assessed in supervised practice. This manual is written so that you arrive at that training understanding what each step is for, which makes the training faster and the learning more durable.
Parents sometimes refuse a treatment, leave before an assessment is complete, or follow advice from elsewhere that you believe is wrong. The reflex to argue rarely helps and frequently ends the conversation. What works better is finding out what the concern actually is, answering it honestly including the parts that are genuinely uncertain, making your recommendation plainly, and ensuring that whatever they decide, they leave knowing the danger signs and how to come back. A family who disagrees with you and still knows when to return is a far better outcome than a family who nods, leaves, and does not.
Children are the patients least able to advocate for themselves and most dependent on somebody noticing. The nurse who counts properly, who listens to a mother, who escalates a worry that turns out to be nothing nine times, is the reason the tenth child survives. It is not dramatic work and it is not usually recognised, and it is among the most consequential nursing there is. Children also recover in a way adults rarely do: a child who looked frightening two hours ago can be sitting up demanding food, and that reversal is the reward of the specialty. Holding both of those truths at once — that a child can deteriorate within an hour and can recover within one too — is what makes a good paediatric nurse both vigilant and calm.