Birth Asphyxia 3 Quiz 1 / 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. 2 / 60 Hypoxic-ischemic encephalopathy (HIE) is associated with which complication? Hypoglycemia Congenital heart disease Hyperbilirubinemia Cerebral palsy HIE can cause long-term neurological damage including cerebral palsy. HIE can cause long-term neurological damage including cerebral palsy. 3 / 60 Which Apgar score indicates moderate birth asphyxia? 0-3 4-6 8-10 >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. 4 / 60 A severely asphyxiated newborn requires resuscitation. What FiOâ should be used initially? 21% (room air) 40% 80% 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. 5 / 60 In a newborn with severe HIE, what is the key long-term follow-up requirement? Hearing test only Periodic renal ultrasound 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. 6 / 60 What is the initial management step in a newborn with birth asphyxia? Give glucose Ensure airway and provide ventilation Start IV fluids 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. 7 / 60 At what time should therapeutic hypothermia ideally be initiated for maximum neuroprotection? Within 6 hours of birth Immediately after resuscitation Between 12â18 hours 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. 8 / 60 What is the typical EEG finding in moderate to severe HIE? Normal sleep-wake cycling Suppressed background activity or burst suppression Regular theta rhythms 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. 9 / 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. 10 / 60 Which clinical sign is an early indicator of hypoxic-ischemic encephalopathy? Bradycardia Poor feeding and lethargy Persistent crying Jitteriness 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. 11 / 60 What is a major risk of delayed intervention in birth asphyxia? Anemia Growth retardation Neonatal jaundice 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. 12 / 60 What is the first-line investigation to assess kidney function in asphyxiated neonates? Abdominal CT Serum creatinine and urine output monitoring Electrolyte panel alone Renal biopsy Elevated creatinine and reduced urine output indicate renal impairment post-asphyxia. Elevated creatinine and reduced urine output indicate renal impairment post-asphyxia. 13 / 60 What is the purpose of therapeutic hypothermia in birth asphyxia? Prevent sepsis Increase oxygen delivery 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. 14 / 60 What is the most common neurologic sequela of severe birth asphyxia? Epilepsy Autism Cerebral palsy Hydrocephalus 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. 15 / 60 Which imaging modality helps assess hypoxic brain injury in neonates? Chest X-ray Cranial ultrasound or MRI CT of lungs Abdominal ultrasound 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. 16 / 60 What gestational condition increases the risk of birth asphyxia? Iron deficiency anemia Prolonged labor Maternal obesity 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. 17 / 60 Which clinical sign suggests worsening hypoxic injury in a neonate? Crying loudly Normal tone Good suck reflex 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. 18 / 60 Which maternal condition is most commonly associated with neonatal asphyxia? Hyperthyroidism Preeclampsia Asthma Prolonged labor 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. 19 / 60 What is the significance of neonatal seizures in the first 24 hours? Often associated with birth asphyxia Benign if isolated Always due to infection Caused by feeding difficulty 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. 20 / 60 Which parameter is critical to monitor during resuscitation of an asphyxiated newborn? Fontanelle tension Skin color Heart rate Birth weight 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. 21 / 60 What intervention is contraindicated during therapeutic hypothermia? EEG monitoring Use of anticonvulsants IV fluid monitoring Warming the baby to normal temperature 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. 22 / 60 What is the pathophysiology of brain injury in birth asphyxia? Excessive CSF production Blood-brain barrier thickening Hypercapnia causing vasoconstriction 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. 23 / 60 What is the gold standard for diagnosing the extent of hypoxic brain injury? Sarnat scoring MRI brain EEG Skull X-ray 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. 24 / 60 What is a potential renal complication of birth asphyxia? Hypoplastic kidneys Polycystic kidney disease Acute tubular necrosis Obstructive uropathy Hypoxic injury may lead to reduced renal perfusion and acute tubular necrosis. Hypoxic injury may lead to reduced renal perfusion and acute tubular necrosis. 25 / 60 What is a key nursing priority during therapeutic hypothermia? Monitoring vital signs and preventing overcooling Frequent bathing Feeding every 2 hours Stimulating the infant frequently Close monitoring is essential to maintain target temperature and detect complications. Close monitoring is essential to maintain target temperature and detect complications. 26 / 60 What is the goal of neonatal resuscitation in a newborn with asphyxia? Establish effective ventilation and circulation Give IV fluids immediately Administer antibiotics 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. 27 / 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. 28 / 60 What laboratory finding is commonly seen in asphyxiated neonates? Metabolic acidosis Hypokalemia Respiratory alkalosis Hypernatremia Due to anaerobic metabolism, metabolic acidosis is common in asphyxiated neonates. Due to anaerobic metabolism, metabolic acidosis is common in asphyxiated neonates. 29 / 60 Which system is least likely to be affected by birth asphyxia? Renal system Cardiovascular system Central nervous system Skeletal system The skeletal system is generally not compromised by perinatal hypoxia. The skeletal system is generally not compromised by perinatal hypoxia. 30 / 60 Which fetal condition increases the risk for perinatal asphyxia? Premature thelarche Polyhydramnios Neonatal diabetes 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. 31 / 60 Which score is used to assess encephalopathy severity in asphyxiated neonates? Ballard score Sarnat staging Dubowitz score Silverman 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. 32 / 60 Which organ is most sensitive to hypoxia during birth asphyxia? Liver Brain Intestines Skin 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. 33 / 60 What is one important long-term complication of birth asphyxia? Neonatal acne Jaundice Clubfoot 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. 34 / 60 What is the most common arrhythmia associated with severe birth asphyxia? Tachycardia Bradycardia Atrial fibrillation Supraventricular 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. 35 / 60 What is the best prognostic marker in a newborn after perinatal asphyxia? Neurologic examination at 7-10 days Hematocrit level Serum bilirubin 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. 36 / 60 What is the most common cause of birth asphyxia? Maternal infection Meconium aspiration 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. 37 / 60 Which of the following is a poor prognostic factor in birth asphyxia? Birth weight >2.5 kg Apgar score of 6 at 1 minute Need for resuscitation beyond 10 minutes 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 finding during labor suggests possible fetal hypoxia? Accelerations with fetal movement Late decelerations on fetal heart monitoring Irregular uterine contractions 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. 39 / 60 Which parameter is most reliable in monitoring asphyxiated neonates during therapeutic hypothermia? Oxygen saturation Respiratory rate Electroencephalogram (EEG) 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. 40 / 60 Which of the following Apgar components reflects heart rate? Pulse Activity Appearance Grimace The âPulseâ component of the Apgar score measures heart rate. The âPulseâ component of the Apgar score measures heart rate. 41 / 60 Which of the following best describes stage 1 hypoxic-ischemic encephalopathy (HIE)? Irritability with normal muscle tone and reflexes Apnea and bradycardia Coma with absent 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. 42 / 60 Which of the following increases the risk of meconium aspiration syndrome and subsequent asphyxia? Post-term pregnancy Low birth weight Gestational diabetes 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. 43 / 60 What is the typical duration of therapeutic hypothermia for birth asphyxia? 48 hours 72 hours 12 hours 24 hours Cooling is typically maintained for 72 hours to maximize neuroprotection. Cooling is typically maintained for 72 hours to maximize neuroprotection. 44 / 60 What is the role of amplitude-integrated EEG (aEEG) in birth asphyxia? Diagnose infections Monitor glucose levels Detect subclinical seizures and assess cerebral function Assess renal output 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. 45 / 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. 46 / 60 What is the most effective way to prevent birth asphyxia? Timely identification and management of high-risk labor Neonatal antibiotics Routine cesarean section Delayed cord clamping 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. 47 / 60 What should be closely monitored during therapeutic hypothermia? Stool color Tear production 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. 48 / 60 Why is a low Apgar score at 10 minutes concerning? Indicates feeding problems Predicts low birth weight Suggests prolonged hypoxia and poor prognosis Indicates neonatal sepsis 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. 49 / 60 What defines birth asphyxia? Impaired gas exchange leading to hypoxia and hypercapnia Lack of crying after birth Fever and sepsis 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. 50 / 60 What is the expected outcome of Stage 1 HIE in most cases? Full recovery without long-term sequelae Severe disability Intractable seizures 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. 51 / 60 What is the typical presentation of Stage 3 HIE? Normal tone and feeding Coma, flaccidity, and absent reflexes Seizures with some spontaneous movement Jitteriness and normal 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. 52 / 60 Which scoring system is used to assess neonatal encephalopathy severity based on clinical features? Bishop score Silverman-Anderson score Ballard 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. 53 / 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. 54 / 60 What is the consequence of delayed initiation of ventilation in a non-breathing newborn? Increased temperature Decreased seizure risk 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. 55 / 60 What is the hallmark acid-base abnormality in severe birth asphyxia? Metabolic acidosis Respiratory alkalosis Metabolic alkalosis Respiratory acidosis Due to anaerobic metabolism, lactic acid accumulates, resulting in metabolic acidosis. Due to anaerobic metabolism, lactic acid accumulates, resulting in metabolic acidosis. 56 / 60 Which investigation helps detect hypoxic damage to the basal ganglia? Renal scan Chest ultrasound MRI brain 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. 57 / 60 What defines severe birth asphyxia using the Apgar score? 10-minute score of 9 5-minute score of 0-3 5-minute score of 6-7 1-minute score of 6 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. 58 / 60 Which clinical sign most strongly indicates the need for immediate resuscitation at birth? Absence of spontaneous breathing Caput succedaneum Tachypnea 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. 59 / 60 Which of the following is NOT a sign of severe birth asphyxia? Bradycardia >120 bpm Absent reflexes Hypotonia 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. 60 / 60 In asphyxiated neonates, what is the role of cranial ultrasound? To screen for intraventricular hemorrhage or brain edema To detect skeletal injuries To assess liver echogenicity To confirm gestational age 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. Your score isThe average score is 36% LinkedIn Facebook VKontakte 0%