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