Birth Asphyxia 3 Quiz 1 / 60 What is a potential renal complication of birth asphyxia? Acute tubular necrosis Obstructive uropathy Hypoplastic kidneys Polycystic kidney disease Hypoxic injury may lead to reduced renal perfusion and acute tubular necrosis. Hypoxic injury may lead to reduced renal perfusion and acute tubular necrosis. 2 / 60 What is a key nursing priority during therapeutic hypothermia? Monitoring vital signs and preventing overcooling Feeding every 2 hours Stimulating the infant frequently Frequent bathing Close monitoring is essential to maintain target temperature and detect complications. Close monitoring is essential to maintain target temperature and detect complications. 3 / 60 What is the goal of neonatal resuscitation in a newborn with asphyxia? Administer antibiotics Establish effective ventilation and circulation Give IV fluids immediately Raise body temperature The primary goal is to restore oxygenation and perfusion through effective ventilation and chest compressions if needed. The primary goal is to restore oxygenation and perfusion through effective ventilation and chest compressions if needed. 4 / 60 In asphyxiated infants, persistent pulmonary hypertension (PPHN) is caused by: Ventricular septal defect Low lung compliance Hyperoxygenation Failure of pulmonary vasodilation Hypoxia leads to pulmonary vasoconstriction, maintaining fetal circulation and causing PPHN. Hypoxia leads to pulmonary vasoconstriction, maintaining fetal circulation and causing PPHN. 5 / 60 What is the most common arrhythmia associated with severe birth asphyxia? Supraventricular tachycardia Atrial fibrillation Bradycardia Tachycardia Hypoxia typically leads to bradycardia, especially if the heart rate drops below 100 bpm. Hypoxia typically leads to bradycardia, especially if the heart rate drops below 100 bpm. 6 / 60 Which score is used to assess encephalopathy severity in asphyxiated neonates? Ballard score Dubowitz score Silverman score Sarnat staging The Sarnat score is used to grade the severity of hypoxic-ischemic encephalopathy (HIE) in neonates. The Sarnat score is used to grade the severity of hypoxic-ischemic encephalopathy (HIE) in neonates. 7 / 60 Which factor is associated with an increased risk of intrapartum asphyxia? Cephalohematoma Jaundice Umbilical cord prolapse Male gender Umbilical cord prolapse can interrupt blood and oxygen supply to the fetus, increasing the risk of asphyxia. Umbilical cord prolapse can interrupt blood and oxygen supply to the fetus, increasing the risk of asphyxia. 8 / 60 Which clinical sign is an early indicator of hypoxic-ischemic encephalopathy? Bradycardia Poor feeding and lethargy Jitteriness Persistent crying Lethargy and poor feeding are early neurological signs of HIE due to brain hypoxia. Lethargy and poor feeding are early neurological signs of HIE due to brain hypoxia. 9 / 60 Which maternal condition is most commonly associated with neonatal asphyxia? Hyperthyroidism Prolonged labor Preeclampsia Asthma Prolonged labor increases the risk of fetal distress and hypoxic events during delivery. Prolonged labor increases the risk of fetal distress and hypoxic events during delivery. 10 / 60 Hypoxic-ischemic encephalopathy (HIE) is associated with which complication? Hyperbilirubinemia Congenital heart disease Hypoglycemia Cerebral palsy HIE can cause long-term neurological damage including cerebral palsy. HIE can cause long-term neurological damage including cerebral palsy. 11 / 60 What is the most common cause of birth asphyxia? Umbilical cord prolapse Placental insufficiency Maternal infection Meconium aspiration Placental insufficiency leads to chronic fetal hypoxia, making it a leading cause of birth asphyxia. Acute events like cord prolapse are less common. Placental insufficiency leads to chronic fetal hypoxia, making it a leading cause of birth asphyxia. Acute events like cord prolapse are less common. 12 / 60 What is the role of amplitude-integrated EEG (aEEG) in birth asphyxia? Diagnose infections Assess renal output Detect subclinical seizures and assess cerebral function Monitor glucose levels aEEG provides continuous monitoring of brain activity, helping detect seizures and assess the severity of encephalopathy. aEEG provides continuous monitoring of brain activity, helping detect seizures and assess the severity of encephalopathy. 13 / 60 What is the consequence of delayed initiation of ventilation in a non-breathing newborn? Worsening hypoxia and acidosis Increased temperature Improved circulation Decreased seizure risk Every second countsâdelayed ventilation prolongs hypoxia, increasing brain injury and mortality. Every second countsâdelayed ventilation prolongs hypoxia, increasing brain injury and mortality. 14 / 60 Which of the following is a poor prognostic factor in birth asphyxia? Quick response to resuscitation Need for resuscitation beyond 10 minutes Apgar score of 6 at 1 minute Birth weight >2.5 kg Prolonged resuscitation beyond 10 minutes is associated with poor neurological outcomes. Prolonged resuscitation beyond 10 minutes is associated with poor neurological outcomes. 15 / 60 What defines birth asphyxia? Impaired gas exchange leading to hypoxia and hypercapnia Lack of crying after birth Meconium in amniotic fluid Fever and sepsis Birth asphyxia results from failure of gas exchange causing low oxygen and high carbon dioxide levels. Birth asphyxia results from failure of gas exchange causing low oxygen and high carbon dioxide levels. 16 / 60 What gestational condition increases the risk of birth asphyxia? Twin pregnancy Maternal obesity Iron deficiency anemia Prolonged labor Prolonged or obstructed labor can compromise fetal oxygenation and lead to birth asphyxia. Prolonged or obstructed labor can compromise fetal oxygenation and lead to birth asphyxia. 17 / 60 What is a major risk of delayed intervention in birth asphyxia? Anemia Neonatal jaundice Growth retardation Permanent neurologic damage Delay in management may lead to irreversible brain injury such as cerebral palsy or cognitive delay. Delay in management may lead to irreversible brain injury such as cerebral palsy or cognitive delay. 18 / 60 What is the purpose of therapeutic hypothermia in birth asphyxia? Increase oxygen delivery Treat seizures Reduce brain metabolism and injury Prevent sepsis Therapeutic hypothermia (33â34°C) slows brain metabolism, reducing damage from hypoxic-ischemic events. Therapeutic hypothermia (33â34°C) slows brain metabolism, reducing damage from hypoxic-ischemic events. 19 / 60 What is the hallmark acid-base abnormality in severe birth asphyxia? Respiratory acidosis Metabolic alkalosis Respiratory alkalosis Metabolic acidosis Due to anaerobic metabolism, lactic acid accumulates, resulting in metabolic acidosis. Due to anaerobic metabolism, lactic acid accumulates, resulting in metabolic acidosis. 20 / 60 A severely asphyxiated newborn requires resuscitation. What FiOâ should be used initially? 40% 21% (room air) 100% 80% Initial resuscitation begins with room air (21% Oâ); supplemental oxygen is added only if necessary. Initial resuscitation begins with room air (21% Oâ); supplemental oxygen is added only if necessary. 21 / 60 In asphyxiated neonates, what is the role of cranial ultrasound? To confirm gestational age To detect skeletal injuries To assess liver echogenicity To screen for intraventricular hemorrhage or brain edema Cranial ultrasound is a non-invasive, bedside tool to assess for complications like IVH and cerebral edema. Cranial ultrasound is a non-invasive, bedside tool to assess for complications like IVH and cerebral edema. 22 / 60 In a newborn with severe HIE, what is the key long-term follow-up requirement? Hearing test only Neurodevelopmental assessment Periodic renal ultrasound Routine vaccination Early and ongoing neurodevelopmental assessment is crucial to detect and manage delays or disabilities. Early and ongoing neurodevelopmental assessment is crucial to detect and manage delays or disabilities. 23 / 60 What is the expected outcome of Stage 1 HIE in most cases? High mortality Intractable seizures Severe disability Full recovery without long-term sequelae Stage 1 HIE is mild and often resolves completely without long-term consequences. Stage 1 HIE is mild and often resolves completely without long-term consequences. 24 / 60 What is the typical EEG finding in moderate to severe HIE? Normal sleep-wake cycling Alpha waves Suppressed background activity or burst suppression Regular theta rhythms Burst suppression or reduced background activity is characteristic of moderate-to-severe HIE. Burst suppression or reduced background activity is characteristic of moderate-to-severe HIE. 25 / 60 At what time should therapeutic hypothermia ideally be initiated for maximum neuroprotection? Within 6 hours of birth Between 12â18 hours Immediately after resuscitation After 24 hours Therapeutic hypothermia is most effective when started within the first 6 hours of life. Therapeutic hypothermia is most effective when started within the first 6 hours of life. 26 / 60 What is one important long-term complication of birth asphyxia? Neonatal acne Clubfoot Jaundice Cerebral palsy Birth asphyxia is one of the leading causes of cerebral palsy due to hypoxic brain damage. Birth asphyxia is one of the leading causes of cerebral palsy due to hypoxic brain damage. 27 / 60 Which blood test result supports a diagnosis of perinatal asphyxia? Low pH with high base deficit High bicarbonate Respiratory alkalosis Normal lactate Metabolic acidosis, indicated by low pH and high base deficit, is a hallmark of perinatal asphyxia. Metabolic acidosis, indicated by low pH and high base deficit, is a hallmark of perinatal asphyxia. 28 / 60 Which of the following Apgar components reflects heart rate? Appearance Pulse Activity Grimace The âPulseâ component of the Apgar score measures heart rate. The âPulseâ component of the Apgar score measures heart rate. 29 / 60 What is the significance of persistent hypotonia in a newborn? Transient neurological issue Feeding delay Normal variation Possible hypoxic brain injury Persistent hypotonia may indicate hypoxic-ischemic encephalopathy and warrants further evaluation. Persistent hypotonia may indicate hypoxic-ischemic encephalopathy and warrants further evaluation. 30 / 60 What is the typical duration of therapeutic hypothermia for birth asphyxia? 48 hours 12 hours 72 hours 24 hours Cooling is typically maintained for 72 hours to maximize neuroprotection. Cooling is typically maintained for 72 hours to maximize neuroprotection. 31 / 60 Which clinical sign most strongly indicates the need for immediate resuscitation at birth? Tachypnea Caput succedaneum Absence of spontaneous breathing Meconium-stained fluid Apnea at birth is a critical sign of asphyxia and requires immediate intervention. Apnea at birth is a critical sign of asphyxia and requires immediate intervention. 32 / 60 What is the pathophysiology of brain injury in birth asphyxia? Blood-brain barrier thickening Hypoxia leading to energy failure and neuronal death Excessive CSF production Hypercapnia causing vasoconstriction Hypoxia disrupts ATP production, leading to neuronal swelling, apoptosis, and necrosis. Hypoxia disrupts ATP production, leading to neuronal swelling, apoptosis, and necrosis. 33 / 60 What laboratory finding is commonly seen in asphyxiated neonates? Metabolic acidosis Respiratory alkalosis Hypernatremia Hypokalemia Due to anaerobic metabolism, metabolic acidosis is common in asphyxiated neonates. Due to anaerobic metabolism, metabolic acidosis is common in asphyxiated neonates. 34 / 60 What is the initial management step in a newborn with birth asphyxia? Give glucose Start IV fluids Ensure airway and provide ventilation Administer antibiotics The priority is to open the airway and provide effective ventilation, especially if the baby is apneic or bradycardic. The priority is to open the airway and provide effective ventilation, especially if the baby is apneic or bradycardic. 35 / 60 Which Apgar score indicates moderate birth asphyxia? 0-3 8-10 4-6 >10 An Apgar score of 4â6 at 1 and 5 minutes suggests moderate asphyxia. An Apgar score of 4â6 at 1 and 5 minutes suggests moderate asphyxia. 36 / 60 Which fetal condition increases the risk for perinatal asphyxia? Premature thelarche Neonatal diabetes Polyhydramnios Intrauterine growth restriction (IUGR) IUGR fetuses are more susceptible to hypoxia due to placental insufficiency. IUGR fetuses are more susceptible to hypoxia due to placental insufficiency. 37 / 60 Which scoring system is used to assess neonatal encephalopathy severity based on clinical features? Ballard score Silverman-Anderson score Bishop score Sarnat staging The Sarnat staging system evaluates mental status, tone, reflexes, and seizures to classify HIE severity. The Sarnat staging system evaluates mental status, tone, reflexes, and seizures to classify HIE severity. 38 / 60 What is the most common neurologic sequela of severe birth asphyxia? Epilepsy Hydrocephalus Autism Cerebral palsy Cerebral palsy is the most frequent long-term complication from hypoxic brain injury. Cerebral palsy is the most frequent long-term complication from hypoxic brain injury. 39 / 60 What finding during labor suggests possible fetal hypoxia? Irregular uterine contractions Maternal tachycardia Accelerations with fetal movement Late decelerations on fetal heart monitoring Late decelerations are a sign of uteroplacental insufficiency and may indicate fetal hypoxia. Late decelerations are a sign of uteroplacental insufficiency and may indicate fetal hypoxia. 40 / 60 What defines severe birth asphyxia using the Apgar score? 5-minute score of 0-3 1-minute score of 6 10-minute score of 9 5-minute score of 6-7 A 5-minute Apgar score of 0-3 is concerning and indicative of severe birth asphyxia. A 5-minute Apgar score of 0-3 is concerning and indicative of severe birth asphyxia. 41 / 60 What is the best prognostic marker in a newborn after perinatal asphyxia? Serum bilirubin Hematocrit level Capillary refill time Neurologic examination at 7-10 days A thorough neurological exam after the first week of life is a strong predictor of long-term outcomes. A thorough neurological exam after the first week of life is a strong predictor of long-term outcomes. 42 / 60 What is the gold standard for diagnosing the extent of hypoxic brain injury? Skull X-ray EEG Sarnat scoring MRI brain MRI provides detailed structural imaging to assess the areas affected by hypoxic injury. MRI provides detailed structural imaging to assess the areas affected by hypoxic injury. 43 / 60 Which of the following increases the risk of meconium aspiration syndrome and subsequent asphyxia? Twin pregnancy Gestational diabetes Low birth weight Post-term pregnancy Post-term babies are more likely to pass meconium in utero, increasing the risk of aspiration and birth asphyxia. Post-term babies are more likely to pass meconium in utero, increasing the risk of aspiration and birth asphyxia. 44 / 60 Which system is least likely to be affected by birth asphyxia? Central nervous system Renal system Skeletal system Cardiovascular system The skeletal system is generally not compromised by perinatal hypoxia. The skeletal system is generally not compromised by perinatal hypoxia. 45 / 60 Which parameter is critical to monitor during resuscitation of an asphyxiated newborn? Heart rate Fontanelle tension Birth weight Skin color Heart rate is the most reliable indicator of effective resuscitation and guides further steps. Heart rate is the most reliable indicator of effective resuscitation and guides further steps. 46 / 60 Why is a low Apgar score at 10 minutes concerning? Indicates feeding problems Indicates neonatal sepsis Suggests prolonged hypoxia and poor prognosis Predicts low birth weight Persistently low Apgar scores beyond 10 minutes suggest severe asphyxia and are associated with increased risk of death or long-term disability. Persistently low Apgar scores beyond 10 minutes suggest severe asphyxia and are associated with increased risk of death or long-term disability. 47 / 60 What intervention is contraindicated during therapeutic hypothermia? EEG monitoring Warming the baby to normal temperature Use of anticonvulsants IV fluid monitoring Hypothermia must be maintained for 72 hours; rewarming too early negates its neuroprotective effects. Hypothermia must be maintained for 72 hours; rewarming too early negates its neuroprotective effects. 48 / 60 Which clinical sign suggests worsening hypoxic injury in a neonate? Normal tone Good suck reflex Absent Moro reflex Crying loudly Loss of primitive reflexes, such as the Moro reflex, is a sign of worsening neurological function. Loss of primitive reflexes, such as the Moro reflex, is a sign of worsening neurological function. 49 / 60 What is the most effective way to prevent birth asphyxia? Timely identification and management of high-risk labor Routine cesarean section Delayed cord clamping Neonatal antibiotics Effective monitoring and early intervention in complicated labor can significantly reduce the incidence of asphyxia. Effective monitoring and early intervention in complicated labor can significantly reduce the incidence of asphyxia. 50 / 60 What is the typical presentation of Stage 3 HIE? Seizures with some spontaneous movement Normal tone and feeding Jitteriness and normal reflexes Coma, flaccidity, and absent reflexes Stage 3 HIE is the most severe and presents with coma and brainstem dysfunction. Stage 3 HIE is the most severe and presents with coma and brainstem dysfunction. 51 / 60 Which of the following is NOT a sign of severe birth asphyxia? Seizures Hypotonia Bradycardia >120 bpm Absent reflexes Bradycardia >120 bpm is not a clinical concern; severe asphyxia causes heart rates below 100 or 60 bpm. Bradycardia >120 bpm is not a clinical concern; severe asphyxia causes heart rates below 100 or 60 bpm. 52 / 60 What is the first-line investigation to assess kidney function in asphyxiated neonates? Renal biopsy Electrolyte panel alone Abdominal CT Serum creatinine and urine output monitoring Elevated creatinine and reduced urine output indicate renal impairment post-asphyxia. Elevated creatinine and reduced urine output indicate renal impairment post-asphyxia. 53 / 60 What should be closely monitored during therapeutic hypothermia? Tear production Electrolytes, glucose, and coagulation profile Stool color Cranial suture closure Electrolyte disturbances, hypoglycemia, and coagulopathy are common and must be monitored in cooled neonates. Electrolyte disturbances, hypoglycemia, and coagulopathy are common and must be monitored in cooled neonates. 54 / 60 What is the significance of neonatal seizures in the first 24 hours? Caused by feeding difficulty Benign if isolated Always due to infection Often associated with birth asphyxia Seizures within 24 hours of life are often due to hypoxic brain injury. Seizures within 24 hours of life are often due to hypoxic brain injury. 55 / 60 Which of the following best describes stage 1 hypoxic-ischemic encephalopathy (HIE)? Seizures and hypotonia Coma with absent reflexes Apnea and bradycardia Irritability with normal muscle tone and reflexes Stage 1 HIE presents with hyperalertness or irritability, mild symptoms, and generally a good prognosis. Stage 1 HIE presents with hyperalertness or irritability, mild symptoms, and generally a good prognosis. 56 / 60 Which imaging modality helps assess hypoxic brain injury in neonates? Cranial ultrasound or MRI Abdominal ultrasound CT of lungs Chest X-ray Cranial ultrasound or MRI can detect brain injury due to hypoxia, such as periventricular leukomalacia. Cranial ultrasound or MRI can detect brain injury due to hypoxia, such as periventricular leukomalacia. 57 / 60 Which organ is most sensitive to hypoxia during birth asphyxia? Brain Skin Intestines Liver The brain is highly sensitive to oxygen deprivation, making it the most vulnerable organ during asphyxia. The brain is highly sensitive to oxygen deprivation, making it the most vulnerable organ during asphyxia. 58 / 60 Which electrolyte abnormality is common in birth asphyxia? Hypernatremia Hyperkalemia Hypocalcemia Hyperchloremia Hypocalcemia may result from stress and cellular injury in asphyxiated neonates. Hypocalcemia may result from stress and cellular injury in asphyxiated neonates. 59 / 60 Which investigation helps detect hypoxic damage to the basal ganglia? MRI brain Chest ultrasound Skull X-ray Renal scan MRI is the imaging modality of choice to assess specific brain injury patterns such as basal ganglia damage in HIE. MRI is the imaging modality of choice to assess specific brain injury patterns such as basal ganglia damage in HIE. 60 / 60 Which parameter is most reliable in monitoring asphyxiated neonates during therapeutic hypothermia? Blood pressure Respiratory rate Oxygen saturation Electroencephalogram (EEG) EEG helps monitor seizure activity and brain function in neonates undergoing therapeutic hypothermia. EEG helps monitor seizure activity and brain function in neonates undergoing therapeutic hypothermia. Your score isThe average score is 36% LinkedIn Facebook VKontakte 0%