Birth Asphyxia 3 Quiz 1 / 60 What is the expected outcome of Stage 1 HIE in most cases? Full recovery without long-term sequelae High mortality Severe disability Intractable seizures 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. 2 / 60 Hypoxic-ischemic encephalopathy (HIE) is associated with which complication? Cerebral palsy Hypoglycemia Congenital heart disease Hyperbilirubinemia HIE can cause long-term neurological damage including cerebral palsy. HIE can cause long-term neurological damage including cerebral palsy. 3 / 60 Which factor is associated with an increased risk of intrapartum asphyxia? Umbilical cord prolapse Male gender Jaundice Cephalohematoma 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. 4 / 60 Which clinical sign most strongly indicates the need for immediate resuscitation at birth? Caput succedaneum Absence of spontaneous breathing Meconium-stained fluid Tachypnea 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. 5 / 60 What is the most effective way to prevent birth asphyxia? Neonatal antibiotics Delayed cord clamping Timely identification and management of high-risk labor Routine cesarean section 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. 6 / 60 What is the typical EEG finding in moderate to severe HIE? Regular theta rhythms Normal sleep-wake cycling Suppressed background activity or burst suppression Alpha waves 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. 7 / 60 Which fetal condition increases the risk for perinatal asphyxia? Intrauterine growth restriction (IUGR) Premature thelarche Neonatal diabetes Polyhydramnios IUGR fetuses are more susceptible to hypoxia due to placental insufficiency. IUGR fetuses are more susceptible to hypoxia due to placental insufficiency. 8 / 60 What is the pathophysiology of brain injury in birth asphyxia? Blood-brain barrier thickening Hypercapnia causing vasoconstriction Hypoxia leading to energy failure and neuronal death Excessive CSF production Hypoxia disrupts ATP production, leading to neuronal swelling, apoptosis, and necrosis. Hypoxia disrupts ATP production, leading to neuronal swelling, apoptosis, and necrosis. 9 / 60 Which system is least likely to be affected by birth asphyxia? Skeletal system Central nervous system Cardiovascular system Renal system The skeletal system is generally not compromised by perinatal hypoxia. The skeletal system is generally not compromised by perinatal hypoxia. 10 / 60 What laboratory finding is commonly seen in asphyxiated neonates? Metabolic acidosis Hypokalemia Hypernatremia Respiratory alkalosis Due to anaerobic metabolism, metabolic acidosis is common in asphyxiated neonates. Due to anaerobic metabolism, metabolic acidosis is common in asphyxiated neonates. 11 / 60 Which imaging modality helps assess hypoxic brain injury in neonates? Abdominal ultrasound Chest X-ray Cranial ultrasound or MRI CT of lungs 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. 12 / 60 What is the initial management step in a newborn with birth asphyxia? Administer antibiotics Start IV fluids Ensure airway and provide ventilation Give glucose 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. 13 / 60 Which of the following is NOT a sign of severe birth asphyxia? Hypotonia Bradycardia >120 bpm Absent reflexes Seizures 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. 14 / 60 Which clinical sign suggests worsening hypoxic injury in a neonate? Crying loudly Absent Moro reflex Good suck reflex Normal tone 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. 15 / 60 Which parameter is most reliable in monitoring asphyxiated neonates during therapeutic hypothermia? Electroencephalogram (EEG) Blood pressure Oxygen saturation Respiratory rate 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. 16 / 60 What is the gold standard for diagnosing the extent of hypoxic brain injury? Skull X-ray Sarnat scoring EEG 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. 17 / 60 What is the most common neurologic sequela of severe birth asphyxia? Hydrocephalus Epilepsy Cerebral palsy Autism 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. 18 / 60 In a newborn with severe HIE, what is the key long-term follow-up requirement? Neurodevelopmental assessment Periodic renal ultrasound Hearing test only 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. 19 / 60 A severely asphyxiated newborn requires resuscitation. What FiOâ should be used initially? 21% (room air) 80% 40% 100% 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. 20 / 60 What is a potential renal complication of birth asphyxia? Hypoplastic kidneys Acute tubular necrosis Obstructive uropathy 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. 21 / 60 What finding during labor suggests possible fetal hypoxia? Maternal tachycardia Accelerations with fetal movement Late decelerations on fetal heart monitoring Irregular uterine contractions 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. 22 / 60 Which Apgar score indicates moderate birth asphyxia? 8-10 0-3 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. 23 / 60 What is one important long-term complication of birth asphyxia? Clubfoot Cerebral palsy Jaundice Neonatal acne 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. 24 / 60 What is the purpose of therapeutic hypothermia in birth asphyxia? Treat seizures Prevent sepsis Increase oxygen delivery Reduce brain metabolism and injury 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. 25 / 60 Which investigation helps detect hypoxic damage to the basal ganglia? Chest ultrasound MRI brain 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. 26 / 60 Why is a low Apgar score at 10 minutes concerning? Suggests prolonged hypoxia and poor prognosis Indicates neonatal sepsis Indicates feeding problems 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. 27 / 60 What is a key nursing priority during therapeutic hypothermia? Feeding every 2 hours Monitoring vital signs and preventing overcooling 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. 28 / 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. 29 / 60 What is the role of amplitude-integrated EEG (aEEG) in birth asphyxia? Assess renal output Monitor glucose levels Diagnose infections Detect subclinical seizures and assess cerebral function 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. 30 / 60 Which blood test result supports a diagnosis of perinatal asphyxia? Low pH with high base deficit Respiratory alkalosis Normal lactate High bicarbonate 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. 31 / 60 What is the most common arrhythmia associated with severe birth asphyxia? Atrial fibrillation Bradycardia Supraventricular tachycardia 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. 32 / 60 What is the first-line investigation to assess kidney function in asphyxiated neonates? Abdominal CT Renal biopsy Electrolyte panel alone 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. 33 / 60 Which electrolyte abnormality is common in birth asphyxia? Hypernatremia Hyperchloremia Hyperkalemia Hypocalcemia Hypocalcemia may result from stress and cellular injury in asphyxiated neonates. Hypocalcemia may result from stress and cellular injury in asphyxiated neonates. 34 / 60 Which of the following Apgar components reflects heart rate? Pulse Appearance Activity Grimace The âPulseâ component of the Apgar score measures heart rate. The âPulseâ component of the Apgar score measures heart rate. 35 / 60 Which score is used to assess encephalopathy severity in asphyxiated neonates? Sarnat staging Silverman score Dubowitz score Ballard score 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. 36 / 60 What is a major risk of delayed intervention in birth asphyxia? Growth retardation Neonatal jaundice Permanent neurologic damage Anemia 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. 37 / 60 What is the consequence of delayed initiation of ventilation in a non-breathing newborn? Decreased seizure risk Worsening hypoxia and acidosis Improved circulation Increased temperature Every second countsâdelayed ventilation prolongs hypoxia, increasing brain injury and mortality. Every second countsâdelayed ventilation prolongs hypoxia, increasing brain injury and mortality. 38 / 60 In asphyxiated infants, persistent pulmonary hypertension (PPHN) is caused by: Ventricular septal defect Failure of pulmonary vasodilation Low lung compliance Hyperoxygenation Hypoxia leads to pulmonary vasoconstriction, maintaining fetal circulation and causing PPHN. Hypoxia leads to pulmonary vasoconstriction, maintaining fetal circulation and causing PPHN. 39 / 60 At what time should therapeutic hypothermia ideally be initiated for maximum neuroprotection? Immediately after resuscitation Between 12â18 hours After 24 hours Within 6 hours of birth 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. 40 / 60 What is the significance of neonatal seizures in the first 24 hours? Caused by feeding difficulty Always due to infection Benign if isolated 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. 41 / 60 Which of the following best describes stage 1 hypoxic-ischemic encephalopathy (HIE)? Seizures and hypotonia Apnea and bradycardia Coma with absent reflexes 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. 42 / 60 Which parameter is critical to monitor during resuscitation of an asphyxiated newborn? Heart rate Birth weight Fontanelle tension 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. 43 / 60 In asphyxiated neonates, what is the role of cranial ultrasound? To assess liver echogenicity To confirm gestational age To screen for intraventricular hemorrhage or brain edema To detect skeletal injuries 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. 44 / 60 What defines birth asphyxia? Fever and sepsis Lack of crying after birth Impaired gas exchange leading to hypoxia and hypercapnia Meconium in amniotic fluid 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. 45 / 60 Which scoring system is used to assess neonatal encephalopathy severity based on clinical features? Silverman-Anderson score Ballard 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. 46 / 60 What is the hallmark acid-base abnormality in severe birth asphyxia? Respiratory acidosis Metabolic acidosis Metabolic alkalosis Respiratory alkalosis Due to anaerobic metabolism, lactic acid accumulates, resulting in metabolic acidosis. Due to anaerobic metabolism, lactic acid accumulates, resulting in metabolic acidosis. 47 / 60 What is the typical presentation of Stage 3 HIE? Seizures with some spontaneous movement Jitteriness and normal reflexes Coma, flaccidity, and absent reflexes Normal tone and feeding 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. 48 / 60 Which of the following is a poor prognostic factor in birth asphyxia? Need for resuscitation beyond 10 minutes Quick response to resuscitation Birth weight >2.5 kg Apgar score of 6 at 1 minute Prolonged resuscitation beyond 10 minutes is associated with poor neurological outcomes. Prolonged resuscitation beyond 10 minutes is associated with poor neurological outcomes. 49 / 60 What gestational condition increases the risk of birth asphyxia? Prolonged labor Maternal obesity Twin pregnancy Iron deficiency anemia 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. 50 / 60 What is the most common cause of birth asphyxia? Placental insufficiency Maternal infection Meconium aspiration Umbilical cord prolapse 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. 51 / 60 Which clinical sign is an early indicator of hypoxic-ischemic encephalopathy? Persistent crying Poor feeding and lethargy Jitteriness Bradycardia 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. 52 / 60 Which maternal condition is most commonly associated with neonatal asphyxia? Prolonged labor Hyperthyroidism Asthma Preeclampsia 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. 53 / 60 What is the best prognostic marker in a newborn after perinatal asphyxia? Serum bilirubin Capillary refill time Hematocrit level 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. 54 / 60 What is the significance of persistent hypotonia in a newborn? Normal variation Feeding delay Possible hypoxic brain injury Transient neurological issue Persistent hypotonia may indicate hypoxic-ischemic encephalopathy and warrants further evaluation. Persistent hypotonia may indicate hypoxic-ischemic encephalopathy and warrants further evaluation. 55 / 60 What should be closely monitored during therapeutic hypothermia? Electrolytes, glucose, and coagulation profile Stool color Cranial suture closure Tear production 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. 56 / 60 What intervention is contraindicated during therapeutic hypothermia? Use of anticonvulsants Warming the baby to normal temperature EEG monitoring 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. 57 / 60 What is the goal of neonatal resuscitation in a newborn with asphyxia? Administer antibiotics Raise body temperature Establish effective ventilation and circulation Give IV fluids immediately 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. 58 / 60 What is the typical duration of therapeutic hypothermia for birth asphyxia? 48 hours 24 hours 12 hours 72 hours Cooling is typically maintained for 72 hours to maximize neuroprotection. Cooling is typically maintained for 72 hours to maximize neuroprotection. 59 / 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. 60 / 60 Which organ is most sensitive to hypoxia during birth asphyxia? Liver Intestines Skin Brain 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. Your score isThe average score is 36% LinkedIn Facebook VKontakte 0%