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