1 – Children between 6 months and 3 years old are typically affected by croup.
2 – Stridor is a common symptom of Epiglottitis in children aged 2-4 years, although the introduction of the H. influenzae vaccine has almost eliminated this condition.
4 – Bronchiolitis often affects individuals between 3 and 6 months old.
5 – No information provided.

Stridor in Children: Causes and Symptoms

Stridor is a high-pitched, wheezing sound that occurs during breathing and is commonly seen in children. There are several causes of stridor in children, including croup, acute epiglottitis, inhaled foreign body, and laryngomalacia. Croup is a viral infection that affects the upper respiratory tract and is characterized by stridor, barking cough, fever, and coryzal symptoms. Acute epiglottitis is a rare but serious infection caused by Haemophilus influenzae type B, which can lead to airway obstruction. Inhaled foreign body can cause sudden onset of coughing, choking, vomiting, and stridor, depending on the site of impaction. Laryngomalacia is a congenital abnormality of the larynx that typically presents at 4 weeks of age with stridor.

It is important to recognize the symptoms of stridor in children and seek prompt medical attention, especially if the child appears unwell or toxic. Treatment may include medications, such as corticosteroids or nebulized epinephrine, or in severe cases, intubation or tracheostomy. Prevention measures, such as vaccination against Haemophilus influenzae type B, can also help reduce the incidence of acute epiglottitis. Overall, early recognition and management of stridor in children can help prevent complications and improve outcomes.

The definitive test for diagnosing necrotising enterocolitis is an abdominal x-ray. If the x-ray shows pneumatosis intestinalis (gas in the gut wall), it confirms the presence of NEC. Treatment involves stopping oral feeds, providing barrier nursing, and administering antibiotics such as cefotaxime and vancomycin. In severe cases, a laparotomy may be necessary, but this is a poor prognostic indicator and is not performed for diagnostic purposes. While a stool culture is often performed in cases of NEC, it is not a definitive test. It is important not to confuse NEC with intussusception, which typically affects older children (5-12 months) and presents with a distended abdomen and the passage of red currant jelly stool. In such cases, an ultrasound scan is usually the initial investigation and will show a target sign. A digital rectal exam is not a diagnostic test and only confirms the presence of feces in the rectum.

Understanding Necrotising Enterocolitis

Necrotising enterocolitis is a serious condition that is responsible for a significant number of premature infant deaths. The condition is characterized by symptoms such as feeding intolerance, abdominal distension, and bloody stools. If left untreated, these symptoms can quickly progress to more severe symptoms such as abdominal discolouration, perforation, and peritonitis.

To diagnose necrotising enterocolitis, doctors often use abdominal x-rays. These x-rays can reveal a number of important indicators of the condition, including dilated bowel loops, bowel wall oedema, and intramural gas. Other signs that may be visible on an x-ray include portal venous gas, pneumoperitoneum resulting from perforation, and air both inside and outside of the bowel wall. In some cases, an x-ray may also reveal air outlining the falciform ligament, which is known as the football sign.

Overall, understanding the symptoms and diagnostic indicators of necrotising enterocolitis is crucial for early detection and treatment of this serious condition. By working closely with healthcare professionals and following recommended screening protocols, parents and caregivers can help ensure the best possible outcomes for premature infants at risk for this condition.

In cases of acute epiglottitis, protecting the airway is crucial and may require endotracheal intubation. Symptoms such as high fever, sore throat, dyspnoea, change in voice, and inspiratory stridor indicate a potential airway emergency. While other treatments may be necessary, securing the airway should be the top priority, following the ABCDE management steps. IV dexamethasone can help reduce laryngeal oedema, but an anaesthetic assessment should be arranged before administering any medication. Nebulised salbutamol is ineffective in treating laryngeal narrowing caused by epiglottitis. X-rays of the neck may be used, but they can take time to organise and delay urgent airway management. Attempting to visualise the larynx without appropriate senior support and intubation capabilities is dangerous in cases of acute epiglottitis. Flexible nasendoscopy should only be performed with the presence of trained personnel who can secure the airway if necessary.

Acute epiglottitis is a rare but serious infection caused by Haemophilus influenzae type B. It is important to recognize and treat it promptly as it can lead to airway obstruction. Although it was once considered a disease of childhood, it is now more common in adults in the UK due to the immunization program. The incidence of epiglottitis has decreased since the introduction of the Hib vaccine. Symptoms include a rapid onset, high temperature, stridor, drooling of saliva, and a tripod position where the patient leans forward and extends their neck to breathe easier. Diagnosis is made by direct visualization, but x-rays may be done to rule out a foreign body.

Immediate senior involvement is necessary, including those who can provide emergency airway support such as anaesthetics or ENT. Endotracheal intubation may be necessary to protect the airway. It is important not to examine the throat if epiglottitis is suspected due to the risk of acute airway obstruction. The diagnosis is made by direct visualization, but only senior staff who are able to intubate if necessary should perform this. Treatment includes oxygen and intravenous antibiotics.

Roseola infantum, also known as ‘sixth disease’, is a common illness among children aged 6 months to 2 years. It is characterized by a fever followed by a non-itchy, painless, maculopapular rash that mainly affects the trunk. Febrile seizures are also common. The illness is caused by the human herpes virus type 6B or 7, and no treatment is required. Long-term complications are rare.

Chickenpox, hand, foot and mouth disease, measles, and rubella are all differential diagnoses that can be ruled out based on the specific characteristics of their respective rashes and accompanying symptoms.

Understanding Roseola Infantum

Roseola infantum, also known as exanthem subitum or sixth disease, is a common illness that affects infants and is caused by the human herpes virus 6 (HHV6). This disease has an incubation period of 5-15 days and is typically seen in children aged 6 months to 2 years. The most common symptoms of roseola infantum include a high fever that lasts for a few days, followed by a maculopapular rash. Other symptoms may include Nagayama spots, which are papular enanthems on the uvula and soft palate, as well as cough and diarrhea.

In some cases, febrile convulsions may occur in around 10-15% of children with roseola infantum. While this can be concerning for parents, it is important to note that this is a common occurrence and typically resolves on its own. Additionally, HHV6 infection can lead to other possible consequences such as aseptic meningitis and hepatitis.

It is important to note that school exclusion is not necessary for children with roseola infantum. While this illness can be uncomfortable for infants, it is typically not serious and resolves on its own within a few days.

Distinguishing Henoch-Schönlein Purpura from Other Conditions: A Brief Overview

Henoch-Schönlein purpura (HSP) is a condition that can present with a range of symptoms, including abdominal pain, non-blanching purpuric rash, arthralgia, haematuria, and renal impairment. It is important to distinguish HSP from other conditions that may have similar symptoms.

Nephrotic syndrome, for example, is characterized by significant proteinuria, hypoalbuminaemia, and oedema, which are not present in HSP. Urinary tract infection, on the other hand, is not associated with a purpuric rash and typically presents with urinary symptoms and positive nitrite and leukocyte dipstick tests.

Goodpasture’s syndrome is a systemic vasculitis that can cause acute renal failure and pulmonary haemorrhage, but it is not typically associated with a purpuric rash. Appendicitis, which can cause an acute abdomen, is unlikely to cause pain for a week and does not typically present with a rash.

In summary, recognizing the unique symptoms of HSP and distinguishing it from other conditions is crucial for accurate diagnosis and appropriate treatment.

The Rotavirus Vaccine: A Vital Tool in Preventing Childhood Illness and Mortality

Rotavirus is a significant public health concern, causing high rates of morbidity and hospitalization in developed countries and childhood mortality in developing nations. To combat this, a vaccine was introduced into the NHS immunization program in 2013. This vaccine is an oral, live attenuated vaccine that requires two doses, the first at two months and the second at three months. It is important to note that the first dose should not be given after 14 weeks and six days, and the second dose cannot be given after 23 weeks and six days due to the theoretical risk of intussusception.

The rotavirus vaccine is highly effective, with an estimated efficacy rate of 85-90%. It is predicted to reduce hospitalization rates by 70% and provides long-term protection against rotavirus. This vaccine is a vital tool in preventing childhood illness and mortality, particularly in developing countries where access to healthcare may be limited. By ensuring that children receive the rotavirus vaccine, we can help to protect them from this dangerous and potentially deadly virus.

The primary reason for stridor in infants is laryngomalacia, which is characterized by a soft epiglottis that collapses into the airway during inhalation. Although it typically resolves on its own, if the stridor worsens and causes respiratory distress or hinders feeding, surgery may be necessary to enhance the airway.

Stridor in Children: Causes and Symptoms

Stridor is a high-pitched, wheezing sound that occurs during breathing and is commonly seen in children. There are several causes of stridor in children, including croup, acute epiglottitis, inhaled foreign body, and laryngomalacia. Croup is a viral infection that affects the upper respiratory tract and is characterized by stridor, barking cough, fever, and coryzal symptoms. Acute epiglottitis is a rare but serious infection caused by Haemophilus influenzae type B, which can lead to airway obstruction. Inhaled foreign body can cause sudden onset of coughing, choking, vomiting, and stridor, depending on the site of impaction. Laryngomalacia is a congenital abnormality of the larynx that typically presents at 4 weeks of age with stridor.

It is important to recognize the symptoms of stridor in children and seek prompt medical attention, especially if the child appears unwell or toxic. Treatment may include medications, such as corticosteroids or nebulized epinephrine, or in severe cases, intubation or tracheostomy. Prevention measures, such as vaccination against Haemophilus influenzae type B, can also help reduce the incidence of acute epiglottitis. Overall, early recognition and management of stridor in children can help prevent complications and improve outcomes.

According to the NICE traffic light system, reduced skin turgor is a red flag symptom in children. This system is used to identify the risk of serious illness in children. Decreased activity is considered an amber symptom, while age <6 months is not a red flag symptom. Age 3-6 months with a temperature of >=39ºC is an amber flag symptom, and age <3 months with a temperature of >=38°C is a red flag symptom. A respiratory rate of >60 breaths/minute is also a red flag symptom. Finally, a heart rate of >160 beats/minute in children under 12 months is an amber flag symptom.

The NICE Feverish illness in children guidelines were introduced in 2007 and updated in 2013. These guidelines use a ‘traffic light’ system to assess the risk of children under 5 years old presenting with a fever. It is important to note that these guidelines only apply until a clinical diagnosis of the underlying condition has been made. When assessing a febrile child, their temperature, heart rate, respiratory rate, and capillary refill time should be recorded. Signs of dehydration should also be looked for. Measuring temperature should be done with an electronic thermometer in the axilla if the child is under 4 weeks old or with an electronic/chemical dot thermometer in the axilla or an infrared tympanic thermometer.

The risk stratification table includes green for low risk, amber for intermediate risk, and red for high risk. The table includes categories such as color, activity, respiratory, circulation and hydration, and other symptoms. If a child is categorized as green, they can be managed at home with appropriate care advice. If they are categorized as amber, parents should be provided with a safety net or referred to a pediatric specialist for further assessment. If a child is categorized as red, they should be urgently referred to a pediatric specialist. It is important to note that oral antibiotics should not be prescribed to children with fever without an apparent source, and a chest x-ray does not need to be routinely performed if a pneumonia is suspected but the child is not going to be referred to the hospital.

The recommended treatment for scarlet fever in patients who do not require hospitalization and have no penicillin allergy is a 10-day course of oral penicillin V. This condition is characterized by symptoms such as fever, sore throat, strawberry tongue, and a rash that is more prominent in the cubital fossas. Scarlet fever is caused by erythrogenic toxins produced by Group A haemolytic streptococci, and if left untreated, it can lead to complications such as otitis media and rheumatic fever. Administering varicella-zoster immunoglobulin is not appropriate for this condition. Prescribing analgesia and asking the patient to return in 5 days for review is also not recommended, as antibiotics should be given as soon as possible to prevent complications. Oral azithromycin for 5 days is not the first-line treatment for scarlet fever, and co-amoxiclav is not indicated for this condition.

Scarlet fever is a condition caused by erythrogenic toxins produced by Group A haemolytic streptococci, usually Streptococcus pyogenes. It is more prevalent in children aged 2-6 years, with the highest incidence at 4 years. The disease spreads through respiratory droplets or direct contact with nose and throat discharges, especially during sneezing and coughing. The incubation period is 2-4 days, and symptoms include fever, malaise, headache, nausea/vomiting, sore throat, ‘strawberry’ tongue, and a rash that appears first on the torso and spares the palms and soles. The rash has a rough ‘sandpaper’ texture and desquamation occurs later in the course of the illness, particularly around the fingers and toes.

To diagnose scarlet fever, a throat swab is usually taken, but antibiotic treatment should be initiated immediately, rather than waiting for the results. Management involves administering oral penicillin V for ten days, while patients with a penicillin allergy should be given azithromycin. Children can return to school 24 hours after commencing antibiotics, and scarlet fever is a notifiable disease. Although usually a mild illness, scarlet fever may be complicated by otitis media, rheumatic fever, acute glomerulonephritis, or rare invasive complications such as bacteraemia, meningitis, or necrotizing fasciitis, which may present acutely with life-threatening illness.

The infant is suffering from pyloric stenosis, which leads to a typical imbalance of electrolytes and acid-base known as hypochloremic, hypokalaemic metabolic alkalosis. The continuous vomiting results in a gradual loss of fluids that contain hydrochloric acid, causing the kidneys to retain hydrogen ions over potassium. If the illness is brief, there may not be any electrolyte abnormalities.

Understanding Pyloric Stenosis

Pyloric stenosis is a condition that usually occurs in infants between the second and fourth weeks of life. However, in rare cases, it may present later, up to four months. This condition is caused by the thickening of the circular muscles of the pylorus. Pyloric stenosis is more common in males, with an incidence of 4 per 1,000 live births. It is also more likely to affect first-borns and infants with a positive family history.

The most common symptom of pyloric stenosis is projectile vomiting, which usually occurs about 30 minutes after a feed. Other symptoms may include constipation, dehydration, and a palpable mass in the upper abdomen. Prolonged vomiting can lead to hypochloraemic, hypokalaemic alkalosis, which can be life-threatening.

Diagnosis of pyloric stenosis is typically made using ultrasound. Management of this condition involves a surgical procedure called Ramstedt pyloromyotomy. This procedure involves making a small incision in the pylorus to relieve the obstruction and allow for normal passage of food. With prompt diagnosis and treatment, infants with pyloric stenosis can make a full recovery.

Physiological Jaundice in Infants

Physiological jaundice is a common occurrence in newborns, affecting around 90% of infants. It typically appears after the first two to three days of life and is caused by an increase in the breakdown of red blood cells and the relative immaturity of the liver. This type of jaundice is not usually a cause for concern and will often resolve on its own within a few weeks. However, if anemia is present, it may indicate a more serious underlying condition, such as hemolytic anemia. It is important for healthcare providers to monitor newborns for signs of jaundice and to investigate any potential underlying causes.

When dealing with suspected or confirmed bacterial meningitis in children under 3 months old, it is not recommended to use corticosteroids. Instead, the most appropriate treatment option would be a combination of IV cefotaxime and IV amoxicillin. IV cefotaxime is effective in covering for pneumococcal and haemophilus influenzae, but since children under 3 months are at risk of listeria monocytogenes as a cause of bacterial meningitis, amoxicillin is necessary to provide adequate coverage. It is important to note that IV dexamethasone is typically given to patients with bacterial meningitis to reduce the risk of neurological complications, but this is not recommended for children under 3 months old.

Investigation and Management of Meningitis in Children

Meningitis is a serious condition that can affect children. When investigating meningitis, it is important to note any contraindications to lumbar puncture, such as signs of raised intracranial pressure, focal neurological signs, papilloedema, significant bulging of the fontanelle, disseminated intravascular coagulation, or signs of cerebral herniation. For patients with meningococcal septicaemia, a lumbar puncture is contraindicated, and blood cultures and PCR for meningococcus should be obtained instead.

The management of meningitis in children involves administering antibiotics, such as IV amoxicillin (or ampicillin) and IV cefotaxime for children under three months, and IV cefotaxime (or ceftriaxone) for children over three months. Steroids should be considered if the lumbar puncture reveals certain findings, such as purulent cerebrospinal fluid, a high white blood cell count, or bacteria on Gram stain. Fluids should be administered to treat shock, and cerebral monitoring should be conducted, including mechanical ventilation if necessary.

It is also important to notify public health authorities and administer antibiotic prophylaxis to contacts. Ciprofloxacin is now preferred over rifampicin for this purpose. Overall, prompt and appropriate management of meningitis in children is crucial for ensuring the best possible outcomes.

Understanding Intraventricular Haemorrhage

Intraventricular haemorrhage is a rare condition that involves bleeding into the ventricular system of the brain. While it is typically associated with severe head injuries in adults, it can occur spontaneously in premature neonates. In fact, the majority of cases occur within the first 72 hours after birth. The exact cause of this condition is not well understood, but it is believed to be a result of birth trauma and cellular hypoxia in the delicate neonatal central nervous system.

Treatment for intraventricular haemorrhage is largely supportive, as therapies such as intraventricular thrombolysis and prophylactic cerebrospinal fluid drainage have not been shown to be effective. However, if hydrocephalus and rising intracranial pressure occur, shunting may be necessary. It is important for healthcare professionals to be aware of this condition and its potential complications in order to provide appropriate care for affected patients.

It is important to arrange urgent assessment for a child under 3 years old who presents with an acute limp. Referral for urgent paediatric assessment is the correct course of action, as transient synovitis is rare in this age group and septic arthritis is more common. Rest and analgesia should not be recommended, as further investigations are needed to rule out septic arthritis, which may involve an ultrasound or synovial fluid aspirate. Referral for an urgent MRI or X-ray of the hip is also not appropriate at this stage, as these investigations would be considered by a paediatrician after an initial urgent assessment.

Causes of Limping in Children

Limping in children can be caused by various factors, which may differ depending on the child’s age. One possible cause is transient synovitis, which has an acute onset and is often accompanied by viral infections. This condition is more common in boys aged 2-12 years. On the other hand, septic arthritis/osteomyelitis may cause a child to feel unwell and have a high fever. Juvenile idiopathic arthritis may cause a painless limp, while trauma can usually be diagnosed through the child’s history. Development dysplasia of the hip is usually detected in neonates and is six times more common in girls. Perthes disease, which is due to avascular necrosis of the femoral head, is more common in children aged 4-8 years. Finally, slipped upper femoral epiphysis may occur in children aged 10-15 years and is characterized by the displacement of the femoral head epiphysis postero-inferiorly. It is important to identify the cause of a child’s limp in order to provide appropriate treatment and prevent further complications.

Urgent Actions to Take in Cases of Alleged Sexual Abuse

In cases of alleged sexual abuse, it is crucial to take urgent actions to ensure the safety and well-being of the patient. One of the most important steps is to refer the patient for a forensic examination by a qualified practitioner as soon as possible. This will enable the collection of any remaining evidence and prompt treatment for any physical effects of the assault. The patient should also be referred to social services and other support services that specialize in dealing with victims of sexual assault.

It is essential to discuss the case with the safeguarding lead, but this discussion must take place while the patient is protected in a place of safety, rather than after she has returned home. It is also important to advise the patient that nothing can be done without her parent’s consent, but if she has capacity, she may not need parental consent. Encouraging her to speak to her parents for support is advisable if she does not feel this will put her at further risk.

Advising the patient to self-present at the police station may discourage her from seeking further support. Instead, an appropriate referral should be made to ensure that the correct action is taken to protect the child’s safety. Performing a pelvic examination and swabs may cause distress to the patient, and it is best to have a fully qualified forensic examiner perform a thorough examination.

In summary, taking urgent actions and following proper procedures is crucial in cases of alleged sexual abuse to ensure the safety and well-being of the patient.

The UK immunisation schedule recommends certain vaccines at different ages. At birth, the BCG vaccine is given if the baby is at risk of tuberculosis. At 2, 3, and 4 months, the ‘6-1 vaccine’ (diphtheria, tetanus, whooping cough, polio, Hib and hepatitis B) and oral rotavirus vaccine are given, along with Men B and PCV at certain intervals. At 12-13 months, the Hib/Men C, MMR, and PCV vaccines are given, along with Men B. At 3-4 years, the ‘4-in-1 preschool booster’ (diphtheria, tetanus, whooping cough and polio) and MMR vaccines are given. At 12-13 years, the HPV vaccination is given, and at 13-18 years, the ‘3-in-1 teenage booster’ (tetanus, diphtheria and polio) and Men ACWY vaccines are given. Additionally, the flu vaccine is recommended annually for children aged 2-8 years.

It is important to note that the meningitis ACWY vaccine has replaced meningitis C for 13-18 year-olds due to an increased incidence of meningitis W disease in recent years. The ACWY vaccine will also be offered to new students (up to the age of 25 years) at university. GP practices will automatically send letters inviting 17-and 18-year-olds in school year 13 to have the Men ACWY vaccine. Students going to university or college for the first time as freshers, including overseas and mature students up to the age of 25, should contact their GP to have the Men ACWY vaccine, ideally before the start of the academic year.

It is worth noting that the Men C vaccine used to be given at 3 months but has now been discontinued. This is because the success of the Men C vaccination programme means there are almost no cases of Men C disease in babies or young children in the UK any longer. All children will continue to be offered the Hib/Men C vaccine at one year of age, and the Men ACWY vaccine at 14 years of age to provide protection across all age groups.

Understanding Shaken Baby Syndrome

Shaken baby syndrome is a condition that involves a combination of retinal haemorrhages, subdural haematoma, and encephalopathy. It occurs when a child between the ages of 0-5 years old is intentionally shaken. However, there is controversy among physicians regarding the mechanism of injury, making it difficult for courts to convict suspects of causing shaken baby syndrome to a child. This condition has made headlines due to the ongoing debate among medical professionals.

Shaken baby syndrome is a serious condition that can cause long-term damage to a child’s health. It is important to understand the signs and symptoms of this condition to ensure that children are protected from harm. While the controversy surrounding the diagnosis of shaken baby syndrome continues, it is crucial to prioritize the safety and well-being of children. By raising awareness and educating the public about this condition, we can work towards preventing it from occurring in the future.

Recognizing Signs of Possible Child Abuse

Child abuse can take many forms, and healthcare professionals must be vigilant in recognizing signs of possible abuse. Some common signs include bite marks, torn frenulum from forced bottle-feeding, ligature marks, burns, and scalds. However, it is important to note that some harmless conditions, such as dermal melanocytosis, can be mistaken for abuse. Other signs to watch for include mid-clavicular fractures in neonates, bruises of different ages on young children, and widespread petechial rashes. It is crucial for healthcare providers to document any suspicious findings and report them to the appropriate authorities. By recognizing and reporting signs of possible abuse, healthcare professionals can help protect vulnerable children.

Cyanotic Neonate with Boot-Shaped Heart: Tetralogy of Fallot

Tetralogy of Fallot (TOF) is a congenital heart defect that can present as a cyanotic neonate with a boot-shaped heart and a holosystolic murmur loudest at the left sternal border. This condition is characterized by four morphologic features: right ventricular hypertrophy, right ventricular outflow tract obstruction secondary to pulmonary stenosis, ventricular septal defect, and overriding aorta. These features develop due to anterosuperior displacement of the infundibular septum during fetal development.

A fixed, widely split S2 would indicate an atrial septal defect (ASD), which is a form of acyanotic heart disease and would not explain the radiograph findings in this scenario. A decrescendo, diastolic murmur at the right upper sternal border would suggest aortic regurgitation, which is not a cause of cyanotic heart disease in neonates. A harsh crescendo–decrescendo systolic murmur at the right upper sternal border would suggest aortic stenosis, which is also not a cause of cyanotic heart disease in neonates.

Therefore, a cyanotic neonate with a boot-shaped heart and a holosystolic murmur loudest at the left sternal border is likely to have TOF. These patients can be born cyanotic, or cyanosis can develop after birth as a left-to-right shunt undergoes Eisenmenger syndrome and becomes a right-to-left shunt.

Prader-Willi is one of the conditions that can cause neonatal hypotonia, along with neonatal sepsis, spinal muscular atrophy, and hypothyroidism.

Understanding Neonatal Hypotonia and Its Causes

Neonatal hypotonia is a condition characterized by low muscle tone in newborns. This can be caused by various factors, including neonatal sepsis, Werdnig-Hoffman disease (spinal muscular atrophy type 1), hypothyroidism, and Prader-Willi syndrome. Maternal factors such as drug use, particularly benzodiazepines, and myasthenia gravis can also contribute to neonatal hypotonia.

Neonatal hypotonia can have serious consequences, including difficulty with feeding and breathing, delayed motor development, and even death in severe cases. It is important for healthcare providers to identify the underlying cause of hypotonia in newborns and provide appropriate treatment to prevent complications and improve outcomes.

Understanding the potential causes of neonatal hypotonia can help healthcare providers make an accurate diagnosis and develop an effective treatment plan. With proper care and management, many newborns with hypotonia can go on to lead healthy and fulfilling lives.