Introduction causes pathophysiology sign and symptoms diagnosis management nursing management of birth asphyxia
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Prepared by Bidya Thapa Birth asphyxia
Definition of Birth Asphyxia/ Asphyxia Neonatorum Birth asphyxia is the medical condition resulting from deprivation of oxygen to a newborn infant that lasts long enough during the birth process to cause physical harm, usually to the brain. In another word birth asphyxia is simply defined as the failure to initiate and sustain breathing at birth. It’s literal meaning is:- Stopping of the pulse.
According to the World Health Organization birth asphyxia is defined as “failure to initiate and sustain breathing at birth”.
Classification of birth Asphyxia Mild Birth Asphyxia Moderate Birth Asphyxia Severe Birth Asphyxia Jittery or hyper alert Poor feeding Normal or fast breathing Symptoms last for 24 to 48 hours and resolving spontaneously May be lethargic Feeding difficulty Occasional episode of apnea and convulsions Baby may be floppy or unconscious Not feed Frequent episodes of apnea and convulsion Need urgent treatment
Incidence of Birth Asphyxia In Nigeria, study was done in the year 2012 total of 864 out of 26,000 neonates seen within this period had birth asphyxia. 525(28/1000 live births) had mild asphyxia while 32% were severely asphyxiated. 61.5% of the asphyxiated were born at maternities, churches or delivered by traditional birth attendants or at home. (Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4776985/ )
In Nepal ( Dhulikhel Hospital) among the 3784 live births there were 102 babies with birth asphyxia (Source: Clinical Profile of Birth Asphyxia in Dhulikhel Hospital: A Retrospective Study: 2009)
Etiology of birth asphyxia Maternal factors: Hypoxia Anemia Diabetes Hypertension Smoking Nephritis Heart diseases Too young or too old
Fetal factors: Multiple births Congenital of malformed fetus Severe cardio pulmonary disease
Pathophysiology of Birth Asphyxia Source: nzrc.org.nz/ assests /guidelines/other-information/Guidelines-Physiology-of-Birth-Asphyxiz.pdf
Signs and symptoms of birth asphyxia Skin color that is bluish, gray, or pale Weak breathing / respiratory distress (or failure to breathe) A slow heart rate or weak pulse Weak reflexes Poor muscle tone Acidosis (a dangerously high level of acid in the blood) Seizures
Diagnosis of birth asphyxia History taking: - maternal anamnesis- perinatal risk factors; - clinical factors of asphyxia, with primary and secondary apnea, neurological cardiac and renal perturbances , apgar score at 5 and 10 minutes.
b) Physical examination: APGAR SCORE: The APGAR score is a simple method of quickly assessing the health and vital signs of a new born baby after delivery. The scoring is done in a newborn baby at 1 minute and 5 minutes. The Apgar score is related to the status of oxygenation of the fetus immediately after birth. Apgar score is tabulated as follows:
Total score: 10 a) No asphyxia: 7-10 b) Mild asphyxia: 4-6 c) Severe asphyxia: 0-3
Management of a Neonate with Birth Asphyxia In Mild case: Allow the baby to begin breast feeding. If the baby is receiving oxygen or otherwise cannot be breastfeed, expressed breast milk can be given. Provide ongoing care
In Moderate to Severe case: Treat breathing difficulty if present: Immediately resuscitate the baby using a bag and mask if the baby: i . If not breathing at all, even when stimulated or ii. Is gasping or iii. Has a respiratory rate less than 20 breath per minutes 2. Establish an IV line and give only IV fluid for the first 12 hours and monitor the urine output
Restrict the fluid volume to 60 ml per kg body weight for the first day. If convulsion present, treat for convulsion to prevent worsening of the baby’s conditions Allow the baby to breast feed, if the baby become responsive. If not able to suck give expressed breast milk. Provide ongoing care to the baby: Assess the baby every two hourly: If the baby’s temperature is less than 36.5 degree centigrade or more than 37.5 degree centigrade, treat immediately.
Treat for convulsion or breathing difficulty as required Encourage the mother to hold and cuddle the baby. If the baby is unconcious , lethargic or floppy, handles and loves the baby gently to prevent injury when the baby’s muscle tone is low. Support the baby’s entire body specially the head. If the baby’s condition is not improving after three days, assess again for the signs of sepsis
If the baby has not had convulsions for three days after discontinuing Phenobarbital, the mother is able to feed the baby, and there are no other problems requiring hospitalizations, discharge the baby. Follow up in 1 week, or earlier if the mother notes serious problems like feeding difficulties, convulsions. Help the mother find the best method of feeding if the baby is feeding slowly, have the mother feed frequently.
vii. Discuss that the baby’s may have breathing problems in home and how to deal with this at home.
Newborn Resuscitation About 10% of newborns need some assistance to initiate breathing at birth. Of which, less than 1% require extensive resuscitation measures to keep newborn alive. The National Resuscitation Programme was developed by American Academy of Pediatrics (AAP) in conjunction with American Heart Association(AHA) following the neonates resusicatation can generally be identified by a rapid assessment of following three characteristics:
Term Gestation (yes/no) Crying or breathing (yes/no) Good muscle tone (yes/no) If answer to all these questions is “yes”, the baby does not need resuscitation. The baby should be dried and placed in skin to skin contact with the mother. APGAR scoring should be done simultaneously. But if the answer is “no”, the infant needs resuscitation.
TABC of Resuscitation T- Maintainence of temperature through dry the baby quickly, remove wet linen and place the baby under radiant warmer A- Establish an open airway by position the infant, suction mouth and nose (in few cases trachea) and ET intuabtion , if needed to ensure open airway. B- Initiate breathing through tactile stimulation and positive pressure ventialtion when necessary, using either bag and mask or bag and ET tube
C- Circulation by chest compression and medications if needed Preparation for newborn resuscitation Preparation of area or place for resuscitation : the area should be near by labour room, free from draft and fan, should be warmed. Preparing of clean surface for resuscitation: the surface should be flat, clean and dry and covered with warm cloths
Preparation of equipments: the following equipments should be ready for resuscitation of newborn Suction equipment: - Mucous extarctor or gauze - Electrical or manual suction - Suction catheter(10 fr or 12 fr ) - Feeding tube 6 fr and 20ml syringe
ii. Ventilation euipments : - Newborn size self inflating bag with reservoir(bag volume 250-400ml) - Facemask; normal weight size 1 and small newborn size 0 - oxygen with flow meter and tube iii. Intubation Set: - Laryngoscope with straight blades: No. 0(preterm) and 1(Term) - Extra bulb and batteries for laryngoscope - ET tube(2.5mm,3mm and 3.5mm) - Stylet - Scissors
iv. Medications: -Epinephrine - Naloxone - Sodium Bicarbonate - NS - Sterile water v. Miscellaneous: - Watch, linen, shoulder roll, sthethoscope , adesive tape, syringe(1,2 ,3, 5,10cc), gauze, three way stopcocks and gloves
Preparation of human resources: All births are anticipated high risk so at least 2 persons with skills of resuscitation should be ready at every delivery. 2. Deciding if the newborn need resuscitation Thoroughly dry and stimulate the baby, rub all over the body specially up and down the back with warm and dry cloths. Flicking the sole may be useful. Discard the wet cloth and wrap the baby quickly with new warm dry cloths
Look for breathing and crying. Decide if the baby need resuscitation or not. 3. Doing newborn resuscitation If the baby is not breathing/ breathing less than 30 breaths per minute or is gasping: Quickly clamp the cord, tie and cut the cord leaving a stump 10 cm long Cover baby’s head with cloth or cap Maintain temperature: quickly dry and place baby under radiant warmer Establish an open airway
Start resuscitation Step of Resuscitation Position the baby: The baby should be positioned on back with neck slightly extended with the rolled cloth under the shoulder. Make sure resuscitation is warm and well lit with covering head and lower body.
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2. Clear the airway: Wipe the baby’s mouth and nose with a clean gauze or cloth or suction mouth then nose. Suction only while pulling suction tube out. Introduce suction tube upto 3cm in each nostril. Do suction for less than 20 secs . If thick meconium is present in amniotic fluid than the mouth, oropharynx and hypopharynx should be suctioned as soon as the head is delivered.
Quickly reassess the baby after positioning the baby and airway clearance. If the baby is breathing without difficulty, no further resuscitation is needed. But if the baby has difficulty in breathing or not breathing like: - Gasping - Breathing less than 30 breaths per minute with or without or in- drawing of chest, grunting, shallow irregular breathing. Give oxygen. If the baby has no spontaneous breathing or still cyanosed, start ventilation the baby by AMBU bag or other available bag and mask.
3. Ventilation with bag and mask For bag and mask ventilation, use the baby size mask to cover the baby’s mouth and nose. To ventilate, hold the mask with one hand to ensure an airtight seal using one or two fingers of the same hand to hold the chin and keep the head slightly extended . Squeeze the bag with other hand using finger to only control volume. Ventilate once or twice, watch for chest rises. If the chest does not rise, check the baby’s position, repositions the baby, the mask and dry again until you get chest rise with each breaths. If necessary, repeat suctioning.
Start by giving 100% Oxygen by connecting oxygen cylinder to face mask Ventilate at a rate of 40 to 60 per minute, leaving as much time for breathing out as for breathing in. Allow the baby to breathe out. Check to see if the chest and abdomen is moving with ventilation and whether you can hear proper breath sounds. Continue ventilation until the baby spontaneously cries or breaths or heart rate 60-100.
When the baby’s breathing is normal, stop ventilation and continue to monitor the baby closely. If spontaneous respiration with heart rate more than 100/m, discontinue ventilation gradually. Provide tactile stimulation and monitor heart rate, respiration and colour . If heart rate is between 60-100, continue ventilation. If heart rate is less than 60 per minute ventilation and begin chest compressions If there is no breathing or gasping after 20 minutes stop ventilation the baby has died.
In hospital setting, resuscitation bag should be attached with the oxygen source(5-6litre) and reservoir so as to deliver 90-100% oxygen. After the 30 secs of ventilation with 100% oxygen, evaluate the heart rate and take a follow up action. If the heart rate is less than 60 per minute, continue ventilation and begin chest compression. If there is no breathing or gasping after 20 minutes stop ventilation the baby has died.
4. Chest compression Chest compression are provided by using either thumb technique or two figure technique. Thumb technique : put the thumbs on the lower third of the sternum (above the xiphoid and below an imagery line between the nipples). Encircle your finger around the baby to its back. Finger technique: put your 2 nd and middle fingers on the lower third of the sternum (same as above).
During chest compression, pressure is applied to lower third of sternum, depressing it ½ to ¾ inch. Ventilate for the baby after 3 chest compression. Do not do chest compression and ventilation at the same time. About 90 compression should be given in 1 minute. 1 ventilation should be given after 3 chest compression (1:3).
In 1 minutes 30 ventilation and 90 compression are given. Re check respiration and heart rate: if heart rate <60 /m. Again repeat the cycle of ventilation and respiration and compression . Recheck: if the heart rate >60, stop compression continue ventilation.
If heart rate >100 /m and baby is breathing on his own, stop ventilation, support the baby with warmth, oxygen and stimulation until pink and active. Stop ventilation and chest compression after 20 minutes if no response. Note:-After ventilation and chest compression, if heart rate is <60 b/m, administer the medicines.
Care after Resuscitation Care and support after resuscitation include: Successful resuscitation situation Counsel / advice mother and family: teach mother to check breathing, warmth and contact health personnel’s if any. Encourage for breast feeding as soon as possible to help give newborn more energy.
Explain mother and family about danger signs and seek help if needed. Check newborn hourly for at least 6 hours for. Breathing problems (<30 or 60), chest in-drawing Temperature, color , grunting, gasping Give normal care to baby Maintain record about resuscitation such as steps, APGAR score, care after resuscitation. Do follow up: ask the mother to bring baby for a follow up visit on day 2 or 3 rd .
Need referral situation Counsel/ advice Mother, family about the resuscitation and baby’s condition About care needed by baby Refer baby to higher and well facilitated hospital Encourage for breast feeding is baby can suck Keep baby warm during referral time and throughout the way Maintain baby’s temperature by KMC is possible
Give care: Keep resuscitation continue/ stimulate the baby Continue to monitor breathing and color Keep baby warm Continue oxygen during transport if possible Arrange for referral Prepare record for referral as per hospital’s protocol Follow up visit
Condition of unsuccessful resuscitation situation If the baby is not breathing after 20 minutes of active resuscitation , stop resuscitation and declared the baby’s medical condition i.e. Baby has died. The mother and family need support and care which includes:
Counsel/ Advice Mother and family about resuscitation Care of dead body Answer queries they have in a clear manner Find what they wish to do with the baby’s body Talk family about needs and care of mothers
Ask the mother to return for postpartum visit within 3 weeks. Do all the necessary recording and notification for a baby’s birth, death and other medical record . Cleaning equipment and supplies and replace in an appropriate place.
Nursing Management Assessment for Birth Asphyxia 1)Physical Examination Respiratory System Low APGAR scores Breathing shallow, irregular, tachypnea Snoring, breathing nostrils, retracted suplasternal / substernal, cyanosis Baby does not breathe / breath over 30
Cardiovascular System Optimal pulse, rapid or irregular may be within the normal range (120-160 x / min) Heart rate more than 100 Integument System Presence of cyanosis / pallor - indication of gravity hypoxia Pitting edema of the hands and feet
Digestive System Weak reflexes Lethargy Small stomach capacity Musculoskeletal System Decreased muscle tone Edema, weak reflexes, there are no lines on the soles of the feet most / all of the palm.
Nursing Diagnosis Ineffective Breathing Pattern related to immaturity of the respiratory organs 2) Risk of hypothermia related to systems that have not been mature thermoregulation 3) Imbalanced Nutrition, Less Than Body Requirements related to weak sucking reflex
Nursing Interventions Improving Gas Exchange by: Assessing the breathing pattern of Newton. Positioning the baby. Removing thick mucus play by soft and clean gauze piece/suctioning. Observing conditions carefully for change in respiration, color. Providing oxygen through head box with close observation.
2. Maintaining Body Temperature by: Maintaining room temperature. Wearing the clean cap and clothes immediately after giving morning care. Keeping the baby on radiant warmer with maintaining temperature. Keeping fan off and controlling air drafts. Removing all wet clothes immediately after urination.
3. Maintaining Nutrition by: Assessing the sign of hypoglycaemia . Initiating the breast-feeding as soon as possible. Maintaining IV fluid in correct order. Guiding the mother about proper breast-feeding. Burping technique must be taught.
4. Preventing Aspiration by: Assessing the sucking pattern of the baby. Keeping the baby in lateral position after feeding. Guiding the mother about proper feeding technique. Giving the baby to the mother for sucking with observation.
5. Reducing Infection by: Assessing the general condition of the baby. Performing hand washing before and after touching the baby. Providing all morning care as well as eye and cord care . Controlling visitors. Minimizing invasive procedure. Monitoring signs of infection. Encouraging the mother for Exclusive Breast Feeding.
6. Reducing Anxiety by: Discussing about disease condition and its causes. Informing about the cause of treatment. Encouraging to express her feelings. Assisting the mother to hold the baby effectively. Giving the opportunity to parent to see the baby more time. Explaining the detail about the procedure before performing it. Encouraging the mother for breast-feeding with taking more time.