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