Foetal Distress

Foetal Distress: Comprehensive Nursing Notes

Foetal Distress

Comprehensive Nursing Notes

Definition and Terminology

Foetal distress refers to a condition where the foetus shows signs of compromise due to inadequate oxygen or nutrient supply. This term has been traditionally used to describe when the foetus does not receive adequate amounts of oxygen during pregnancy or labor.

Terminology Evolution

Modern obstetric practice has largely replaced the term “foetal distress” with “non-reassuring foetal status” (NRFS) as it provides a more precise description of the concerning findings without implying a definitive diagnosis of foetal compromise.

Synonyms include:

  • Foetal compromise
  • Non-reassuring foetal heart rate trace
  • Foetal intolerance to labor

Foetal distress represents an emergency condition that requires immediate attention and often intervention to prevent adverse outcomes. The condition can occur during pregnancy, but is most commonly identified during labor and delivery when continuous foetal monitoring is in place.

Pathophysiology

The pathophysiology of foetal distress centers on insufficient oxygen supply to the foetus, which can lead to hypoxia, acidemia, and potentially irreversible damage if prolonged. Understanding the underlying mechanisms is crucial for appropriate nursing assessment and interventions.

Foetal Distress

Figure 1: Anatomical representation of foetal distress showing compromised oxygen supply and monitoring

Primary Pathophysiological Mechanisms

1. Uteroplacental Insufficiency

This is the most common cause of antepartum foetal distress, occurring when blood flow through the placenta is compromised, reducing oxygen exchange between maternal and foetal circulation.

2. Umbilical Cord Compression

Compression of the umbilical cord restricts blood flow to and from the foetus, leading to rapid onset of hypoxemia. When cord compression occurs:

  • Initially, the umbilical vein (carrying oxygenated blood to the foetus) is compressed
  • This causes decreased foetal preload to the heart
  • A baroreceptor-mediated reflex tachycardia occurs
  • Subsequently, increased foetal blood pressure in the carotids triggers vagal stimulation
  • This vagal response slows the heart rate, causing bradycardia
  • When compression is relieved, heart rate typically returns to baseline

3. Head Compression

During labor, compression of the foetal head can trigger a physiological response:

  • Increased intracranial pressure (Cushing response)
  • Decreased cerebral blood flow
  • Vagal activation leading to temporary bradycardia
  • This typically corresponds with contractions and resolves as the contraction ends

4. Placental Dysfunction

Various conditions can compromise placental function:

  • Placental abruption (premature separation from uterine wall)
  • Placenta previa (placenta covering the cervical os)
  • Placental insufficiency due to maternal hypertensive disorders
  • Maternal vascular disease affecting uteroplacental perfusion

Foetal Response to Hypoxia

When oxygen supply becomes insufficient, the foetus undergoes a series of physiological adaptations:

Stage Physiological Response Clinical Manifestations
Initial Compensation
  • Increased oxygen extraction from maternal blood
  • Redistribution of blood flow to vital organs (brain, heart)
  • Decreased movement to conserve energy
  • Decreased foetal movements
  • Changes in heart rate variability
Progressive Hypoxemia
  • Anaerobic metabolism begins
  • Lactic acid production
  • Development of metabolic acidosis
  • Late decelerations in heart rate
  • Decreased variability
  • Absence of accelerations
Decompensation
  • Myocardial depression
  • Cerebral hypoxia
  • Release of meconium into amniotic fluid
  • Severe acidemia (pH < 7.0)
  • Severe variable or prolonged decelerations
  • Bradycardia
  • Minimal or absent variability
  • Meconium-stained amniotic fluid

The progression from compensated to decompensated state can occur rapidly, particularly during labor when the foetus is subjected to additional stressors such as contractions that temporarily reduce uteroplacental blood flow.

Risk Factors

Several maternal, foetal, and placental factors increase the risk of foetal distress. Identifying these risk factors is essential for early detection and prevention.

Maternal Risk Factors

Advanced maternal age (>35 years, especially >40)
Hypertensive disorders (pre-eclampsia, pregnancy-induced hypertension)
Diabetes mellitus (pre-existing or gestational)
Chronic medical conditions (kidney disease, heart disease)
Obesity
Smoking, alcohol, or substance abuse
Previous history of stillbirth
Abnormally low maternal blood pressure
Severe anemia

Foetal Risk Factors

Intrauterine growth restriction (IUGR)
Multiple pregnancy (especially identical twins)
Post-term pregnancy (≥41 weeks)
Foetal anemia
Congenital anomalies
Rhesus sensitization
Foetal infection

Placental and Umbilical Cord Risk Factors

Placental abruption
Placenta previa
Umbilical cord prolapse
Cord entanglement or knots
Vasa previa
Placental insufficiency

Labor and Delivery Risk Factors

Prolonged labor
Uterine hyperstimulation (tachysystole)
Oxytocin augmentation
Abnormal presentation (breech, face, brow)
Cephalopelvic disproportion
Rapid labor
Induction of labor
Maternal hypotension from regional anesthesia

Amniotic Fluid Abnormalities

Oligohydramnios (reduced amniotic fluid)
Polyhydramnios (excessive amniotic fluid)
Meconium-stained amniotic fluid

Clinical Manifestations

Foetal distress manifests through several observable changes that can be detected through clinical assessment and electronic monitoring. Recognizing these signs is crucial for prompt intervention.

Primary Signs of Foetal Distress

Sign Description Clinical Significance
Abnormal Foetal Heart Rate
  • Tachycardia (>160 bpm)
  • Bradycardia (<110 bpm)
  • Decreased variability
  • Recurrent decelerations
Indicates potential foetal hypoxia or acidosis; generally the earliest and most reliable indicator of foetal distress
Decreased Foetal Movement Noticeable reduction in foetal movement over an extended period May indicate foetal compensation mechanism to conserve energy during hypoxic stress
Meconium-Stained Amniotic Fluid
  • Light: Yellow/green tinting
  • Moderate: Darker green
  • Severe: Thick, particulate “pea soup”
Indicates foetal stress; vagal stimulation causes relaxation of anal sphincter and release of meconium
Abnormal Biophysical Profile Low scores on biophysical profile assessment Suggests compromised foetal well-being across multiple physiologic parameters
Scalp Blood pH Changes pH <7.20 indicates significant acidosis Direct measurement of foetal acid-base status indicating degree of hypoxia

Foetal Heart Rate Patterns in Distress

Characteristic patterns observed on electronic foetal monitoring that suggest foetal distress include:

Late Decelerations

Gradual decrease in heart rate that begins after contraction onset, reaches its nadir after the peak of contraction, and returns to baseline after the contraction ends.

Significance: Indicates uteroplacental insufficiency and is always concerning.

Variable Decelerations

Abrupt decrease in heart rate with rapid onset and recovery, varying in timing, depth, and duration.

Significance: Typically caused by umbilical cord compression. Concerning when severe, prolonged, or recurrent.

Prolonged Decelerations

Decrease in heart rate of ≥15 bpm lasting between 2-10 minutes.

Significance: May indicate acute events such as cord prolapse, maternal hypotension, or placental abruption.

Minimal/Absent Variability

Fluctuation in heart rate of <5 bpm for extended periods.

Significance: May indicate foetal central nervous system depression from hypoxia or certain medications.

Sinusoidal Pattern

A smooth, undulating waveform with regular cycles, resembling a sine wave.

Significance: Associated with severe foetal anemia, hypoxia, or certain medications; considered an ominous sign.

Important Note

No single sign should be interpreted in isolation. The clinical picture must consider maternal factors, foetal factors, and the overall progression of labor. Foetal distress is a dynamic condition that requires continuous assessment and re-evaluation.

Diagnosis and Assessment

Accurate diagnosis of foetal distress relies on a combination of clinical assessment, electronic monitoring, and in some cases, invasive testing. Consistent monitoring and proper interpretation are essential for early detection and intervention.

Diagnostic Methods

Method Description Advantages Limitations
Intermittent Auscultation Listening to FHR at regular intervals using a fetoscope or handheld Doppler device Non-invasive, cost-effective, allows maternal mobility Provides limited information, depends on examiner skill, not continuous
Continuous Electronic Foetal Monitoring (CEFM) Continuous recording of FHR and uterine contractions using external or internal monitors Provides continuous data, records patterns over time, widely available Restricts mobility, high false-positive rate, requires interpretation skill
Foetal Scalp Blood Sampling Collection of foetal blood from the presenting part to measure pH or lactate Direct assessment of acid-base status, confirms acidosis Invasive, requires cervical dilation, membranes rupture, technical expertise
Biophysical Profile (BPP) Ultrasound assessment of 5 parameters: foetal breathing, movement, tone, amniotic fluid volume, and non-stress test Comprehensive assessment of foetal wellbeing, non-invasive Time-consuming, requires specialized equipment and expertise
Doppler Velocimetry Ultrasound assessment of blood flow in foetal vessels (umbilical artery, middle cerebral artery) Detects abnormal placental resistance, useful for IUGR assessment Most useful before 34 weeks, requires specialized equipment
Non-Stress Test (NST) Recording of FHR in response to foetal movement Non-invasive, easily performed, good indicator of current foetal status Limited predictive value for long-term outcomes, can be time-consuming

Electronic Foetal Monitoring (EFM) Assessment

When interpreting electronic foetal monitoring traces, healthcare providers assess four key components:

1. Baseline Heart Rate

Normal: 110-160 bpm

Tachycardia: >160 bpm

Bradycardia: <110 bpm

Measured between contractions over a 10-minute window; excluding accelerations, decelerations, and periods of marked variability.

2. Baseline Variability

Normal (moderate): 6-25 bpm

Minimal: ≤5 bpm

Marked: >25 bpm

Absent: Undetectable

Reflects the interplay between sympathetic and parasympathetic nervous systems.

3. Accelerations

Transient increases in FHR ≥15 bpm lasting ≥15 seconds

Presence indicates intact foetal CNS and adequate oxygenation; reassuring sign.

4. Decelerations

Transient decreases in FHR below baseline

Classified as early, late, variable, or prolonged based on timing relative to contractions and waveform characteristics.

VEAL CHOP Mnemonic for Foetal Heart Rate Patterns

This mnemonic helps remember the different types of decelerations and their causes:

  • V (Variable decelerations) – C (Cord compression)
  • E (Early decelerations) – H (Head compression)
  • A (Accelerations) – O (Okay/Oxygen is good)
  • L (Late decelerations) – P (Placental insufficiency)

Amniotic Fluid Assessment

The volume and characteristics of amniotic fluid provide important diagnostic information:

  • Oligohydramnios: Reduced fluid volume (Amniotic Fluid Index [AFI] <5 cm), associated with foetal distress and placental insufficiency
  • Meconium-stained fluid: Categorized as light, moderate, or thick; thick meconium is more concerning and associated with higher rates of meconium aspiration syndrome
Clinical Consideration

While electronic foetal monitoring has a high sensitivity for detecting foetal distress, it has a relatively low specificity, leading to potential false positives. This underscores the importance of correlating EFM findings with the clinical context and, when appropriate, confirming with additional tests like foetal scalp blood sampling before making management decisions.

Classification of Foetal Heart Rate Patterns

The interpretation and classification of foetal heart rate (FHR) patterns are standardized to improve communication among healthcare providers and guide management decisions. Different classification systems exist, but the most widely used is the three-tier system developed by the National Institute of Child Health and Human Development (NICHD).

Three-Tier Classification System

Category Description Features Management
Category I
Normal/Reassuring
Normal FHR pattern strongly predictive of normal foetal acid-base status at the time of observation
  • Baseline rate: 110-160 bpm
  • Moderate variability (6-25 bpm)
  • No late or variable decelerations
  • Early decelerations may be present
  • Accelerations may be present
Continue routine monitoring, no specific interventions required
Category II
Indeterminate
FHR patterns not predictive of abnormal foetal acid-base status, but with insufficient evidence to classify as Category I or III
  • Tachycardia or bradycardia without absent variability
  • Minimal variability
  • Absence of induced accelerations after stimulation
  • Recurrent variable decelerations with minimal-moderate variability
  • Prolonged decelerations
  • Recurrent late decelerations with moderate variability
  • Increased surveillance
  • Intrauterine resuscitation measures
  • Continue to evaluate and trend
  • Consider foetal scalp sampling if available
Category III
Abnormal
FHR patterns associated with abnormal foetal acid-base status, requiring prompt evaluation and intervention
  • Absent variability PLUS one of:
  • Recurrent late decelerations
  • Recurrent variable decelerations
  • Bradycardia
  • OR Sinusoidal pattern
  • Immediate intervention required
  • Aggressive intrauterine resuscitation
  • Prepare for emergency delivery if no improvement
  • Consider direct foetal monitoring if appropriate

Types of Decelerations

Early Decelerations

Shape: Uniform, mirror image of contraction

Timing: Onset early in contraction, nadir coincides with peak of contraction, returns to baseline by end of contraction

Cause: Head compression (vagal response)

Significance: Considered physiological and benign

Late Decelerations

Shape: Uniform, smooth

Timing: Onset delayed after contraction begins, nadir occurs after peak of contraction, slow return to baseline

Cause: Uteroplacental insufficiency

Significance: Always concerning, indicates hypoxemia

Variable Decelerations

Shape: Variable, often “V” or “U” shaped with abrupt onset and recovery

Timing: Inconsistent relationship to contractions

Cause: Umbilical cord compression

Significance: Concerning if deep, prolonged, or recurrent

Prolonged Decelerations

Shape: Variable

Timing: Deceleration lasting ≥2 minutes but <10 minutes

Cause: Various (maternal hypotension, placental abruption, cord prolapse)

Significance: Requires immediate attention and intervention

Other Classification Systems

NICE Classification (UK): Uses a similar framework but with terminology differences:

  • Normal: No concerning features
  • Suspicious: One concerning feature present
  • Pathological: Two or more concerning features OR one abnormal feature
Important Considerations

Classification of FHR patterns should always consider:

  • The overall clinical context (maternal condition, labor progress)
  • The duration and evolution of patterns over time
  • The presence of other risk factors for foetal compromise
  • The stage of labor (first or second stage)

Remember that FHR patterns are dynamic and can change rapidly. Continuous reassessment and documentation are essential.

Management and Interventions

Management of foetal distress focuses on resolving the underlying cause, improving foetal oxygenation, and determining the need for expedited delivery. The approach depends on the severity of distress, gestational age, and stage of labor.

Conservative Management (Intrauterine Resuscitation)

When foetal distress is suspected but not severe or when additional time is needed to prepare for delivery, the following interventions may be implemented:

Maternal Positioning

Left lateral position to relieve compression of maternal vena cava and improve uteroplacental perfusion

Rationale: Increases venous return to the heart, cardiac output, and placental perfusion

Oxygen Administration

Supplemental oxygen via face mask at 8-10 L/min

Rationale: Increases maternal oxygen saturation and potentially improves oxygen delivery to the foetus

Note: Evidence for routine use is limited; should be used selectively

Hydration

Intravenous fluid bolus (typically 500-1000 mL of crystalloid solution)

Rationale: Improves maternal intravascular volume and placental perfusion, particularly in cases of maternal hypotension

Discontinuation of Uterine Stimulants

Stop oxytocin infusion if in use

Rationale: Reduces frequency and intensity of contractions, allowing improved uteroplacental blood flow between contractions

Tocolysis

Short-acting tocolytic agents (e.g., terbutaline 0.25 mg subcutaneously) to temporarily reduce uterine activity

Rationale: Relaxes the uterus to improve placental perfusion, particularly useful in cases of uterine tachysystole or tetanic contractions

Caution: Use with care in patients with cardiac conditions or when contraindicated

Amnioinfusion

The infusion of room temperature saline into the uterine cavity via transcervical catheter.

Indications: Variable decelerations due to cord compression, particularly with oligohydramnios

Rationale: Creates an artificial cushion around the cord to prevent compression

Important Note: Currently not routinely recommended in the UK for intrauterine foetal resuscitation; only undertaken under special arrangements including audit and research

Delivery Interventions

When conservative measures fail to resolve foetal distress or in cases of severe, acute distress, expedited delivery is necessary:

Intervention Indications Considerations
Assisted Vaginal Delivery
(Forceps/Vacuum)
  • Foetal distress in second stage of labor
  • Fully dilated cervix
  • Engaged foetal head
  • Requires appropriate operator skill
  • Assessment of suitability (station, position)
  • Potential complications (maternal trauma, foetal injury)
Emergency Caesarean Section
  • Severe, acute foetal distress
  • Failed conservative measures
  • Contraindications to vaginal delivery
  • First stage of labor
  • Classified by urgency:
  • Category 1: Immediate threat to life (target ≤30 min)
  • Category 2: Maternal/foetal compromise (target ≤75 min)
  • Requires multi-disciplinary rapid response

Antepartum Management

When foetal distress is detected during pregnancy (before labor):

  • Enhanced foetal monitoring (BPP, Doppler studies)
  • Treatment of underlying maternal conditions (hypertension, diabetes)
  • Steroid administration for foetal lung maturity if preterm
  • Timing delivery based on gestational age and severity of distress
  • Consider in-utero transfer to higher-level facility if necessary
Management Dilemma in Preterm Foetuses

For preterm foetuses with suspected distress, there is a balance between the risks of prematurity versus the risks of continued intrauterine hypoxia. Decision-making should involve:

  • Neonatology consultation
  • Assessment of neonatal intensive care capabilities
  • Consideration of steroid administration for lung maturity
  • Magnesium sulfate for neuroprotection if <32 weeks
  • Weighing the risks and benefits of expectant management versus delivery

Nursing Care and Interventions

Nurses play a critical role in prevention, early detection, and management of foetal distress. Skilled nursing assessment and interventions are essential components of effective care.

STOP MOAN Mnemonic for Foetal Distress Interventions

This useful nursing mnemonic outlines the key interventions for managing foetal distress:

  • SSTOP oxytocin infusion
  • MMom turned on side (preferably left lateral)
  • OO₂ administration
  • AAssess baby and mom to see if changes occurred
  • NNotify Provider

Nursing Assessment

Foetal Monitoring Assessment
  • Evaluate baseline FHR, variability, accelerations, and decelerations
  • Recognize patterns consistent with foetal distress
  • Interpret FHR in context of uterine contraction pattern
  • Document findings appropriately
  • Ensure monitoring equipment is functioning properly
Maternal Assessment
  • Monitor vital signs, especially blood pressure
  • Assess hydration status and urine output
  • Evaluate contraction pattern (frequency, duration, intensity)
  • Check for signs of placental abruption (vaginal bleeding, abdominal pain)
  • Assess for maternal hypotension following regional anesthesia

Nursing Interventions

1. Preventive Interventions

  • Position the laboring woman to optimize uteroplacental perfusion (left lateral position)
  • Ensure adequate hydration (oral or IV)
  • Monitor and document maternal vital signs and FHR according to protocols
  • Educate the woman about position changes and their importance
  • Avoid supine position, especially in late pregnancy

2. Interventions for Suspected Foetal Distress

Intervention Nursing Actions Rationale
Position Change
  • Assist mother to left lateral position
  • Alternative positions: right lateral, hands and knees
Relieves pressure on vena cava, improves venous return and cardiac output, enhances uteroplacental perfusion
Oxytocin Management
  • Discontinue oxytocin infusion
  • Document time of discontinuation
  • Monitor contraction frequency and duration
Reduces uterine activity, allows for improved uteroplacental blood flow between contractions
Oxygen Administration
  • Apply oxygen via face mask at 8-10 L/min
  • Explain procedure to reduce anxiety
  • Ensure proper fit of mask
Increases maternal oxygen saturation, may improve foetal oxygenation in cases of hypoxemia
Hydration
  • Initiate or increase IV fluid rate
  • Administer fluid bolus if ordered
  • Monitor fluid intake and output
Improves maternal circulating volume, enhances perfusion to placenta, treats or prevents dehydration
Continuous Assessment
  • Evaluate response to interventions
  • Continued monitoring of FHR and contraction pattern
  • Document findings and interventions
Determines effectiveness of interventions, identifies need for additional measures or expedited delivery

3. Preparation for Emergency Delivery

  • Alert the healthcare team according to protocol
  • Prepare equipment for potential resuscitation
  • Document all assessments, interventions, and responses
  • Support and inform the woman and her partner
  • Prepare for transfer to operating room if caesarean section indicated
  • Assist with preparations for assisted vaginal delivery if appropriate

Nursing Diagnosis Related to Foetal Distress

Key nursing diagnoses that may apply in cases of foetal distress include:

  • Risk for Altered Foetal Perfusion related to maternal position, contraction pattern, or maternal conditions
  • Risk for Impaired Gas Exchange (foetal) related to altered placental perfusion or cord compression
  • Anxiety related to concerns about foetal wellbeing and emergency interventions
  • Deficient Knowledge related to understanding of foetal monitoring and interventions
  • Acute Pain related to labor process and interventions
Documentation Considerations

Thorough documentation is essential and should include:

  • Detailed description of FHR patterns and changes
  • Timing of pattern recognition and interventions
  • Notification of healthcare providers
  • Response to interventions
  • Maternal and foetal condition throughout the event
  • Communications with healthcare team and the woman/family

In cases of litigation related to birth injuries, documentation of timely recognition and appropriate interventions is critically important.

Complications

Foetal distress, if not promptly recognized and appropriately managed, can lead to serious complications for both the foetus/newborn and the mother. Understanding these potential complications is essential for anticipating care needs and communicating risks.

Foetal and Neonatal Complications

Complication Description Potential Long-term Consequences
Birth Asphyxia Oxygen deprivation at birth leading to impaired function of multiple organ systems Hypoxic-ischemic encephalopathy, multi-organ dysfunction syndrome, death
Meconium Aspiration Syndrome Inhalation of meconium-stained amniotic fluid into the lungs before or during delivery Respiratory distress, pneumonia, persistent pulmonary hypertension, chronic lung disease
Hypoxic-Ischemic Encephalopathy (HIE) Brain injury resulting from oxygen deprivation and limited blood flow to the brain Cerebral palsy, intellectual disability, seizure disorders, developmental delay
Acidosis Buildup of acid in the blood due to inadequate oxygen supply Organ dysfunction, particularly affecting brain, heart, and kidneys
Persistent Pulmonary Hypertension Failure of normal circulatory transition at birth Chronic respiratory issues, neurodevelopmental impairment
Stillbirth Foetal death occurring after 20 weeks gestation Profound psychological impact on family, implications for future pregnancies

Maternal Complications

While foetal distress primarily affects the foetus, there can be associated maternal complications:

  • Emergency Delivery Complications: Increased risk of trauma associated with urgent operative delivery (caesarean section or instrumental vaginal delivery)
  • Psychological Impact: Increased risk of postpartum depression, post-traumatic stress disorder, and anxiety related to the emergency situation and concerns about the baby’s well-being
  • Prolonged Hospital Stay: Both mother and baby may require extended hospitalization for monitoring and treatment

Factors Affecting Outcomes

The severity of complications depends on several factors:

  • Duration and severity of hypoxia: Longer and more severe oxygen deprivation increases risk of adverse outcomes
  • Gestational age: Preterm infants are more vulnerable to complications
  • Pre-existing conditions: Foetal growth restriction or other anomalies may reduce foetal reserves
  • Time to intervention: Prompt recognition and appropriate management improves outcomes
  • Quality of neonatal resuscitation: Skilled resuscitation can mitigate effects of intrapartum asphyxia
  • Access to therapeutic hypothermia: For HIE, cooling therapy initiated within 6 hours of birth can improve neurological outcomes
Important Note on Cerebral Palsy

While foetal distress and birth asphyxia have traditionally been associated with cerebral palsy, current research indicates that the vast majority of cerebral palsy cases (approximately 70-80%) are not related to intrapartum events but rather to prenatal or genetic factors. Only a small percentage of cerebral palsy cases can be attributed solely to events during labor and delivery.

For intrapartum hypoxia to be considered the cause of cerebral palsy, specific criteria must be met, including:

  • Evidence of metabolic acidosis in umbilical cord arterial blood (pH < 7.0 and base deficit ≥ 12 mmol/L)
  • Early onset of severe or moderate neonatal encephalopathy
  • Cerebral palsy of the spastic quadriplegic or dyskinetic type
  • Exclusion of other identifiable causes

Prevention

While not all cases of foetal distress can be prevented, several strategies can reduce the risk or allow for earlier detection and intervention, improving outcomes.

Antepartum Preventive Measures

Risk Assessment
  • Thorough prenatal history and physical examination
  • Identification of high-risk pregnancies
  • Appropriate referral for specialized care when indicated
  • Regular reassessment of risk status throughout pregnancy
Maternal Education
  • Teaching foetal movement monitoring (kick counts)
  • Instructions on when to seek medical attention
  • Education about signs of complications
  • Importance of keeping prenatal appointments
Management of Maternal Conditions
  • Optimal control of diabetes, hypertension, and other medical conditions
  • Treatment of infections
  • Smoking cessation counseling
  • Substance abuse treatment when applicable
Antenatal Testing
  • Appropriate use of non-stress testing
  • Biophysical profiles when indicated
  • Doppler studies for high-risk pregnancies
  • Proper interpretation and follow-up of abnormal results

Intrapartum Preventive Measures

  • Appropriate Foetal Monitoring: Use of continuous electronic foetal monitoring for high-risk pregnancies and intermittent auscultation for low-risk pregnancies according to guidelines
  • Interpretation Skills: Ensuring all staff are trained in correct interpretation of foetal heart rate patterns and appropriate response
  • Labor Management: Judicious use of oxytocin, avoiding uterine tachysystole
  • Maternal Positioning: Encouraging positions that optimize uteroplacental perfusion
  • Hydration: Maintaining adequate maternal hydration
  • Regular Reassessment: Ongoing evaluation of the labor progress and foetal wellbeing
  • Prompt Response to Abnormalities: Timely implementation of intrauterine resuscitation measures when indicated

System-Level Preventive Strategies

  • Standardized Protocols: Implementation of evidence-based protocols for monitoring and managing foetal distress
  • Regular Training: Simulation drills and team training for emergency response to foetal distress
  • Clear Communication Tools: Structured communication methods (e.g., SBAR – Situation, Background, Assessment, Recommendation) for handoffs and escalation of concerns
  • Quality Improvement: Regular case reviews and continuous quality improvement activities focused on foetal monitoring practices
  • Appropriate Staffing: Ensuring adequate nurse-to-patient ratios in labor and delivery units
  • Access to Technology: Availability of appropriate monitoring equipment and interpretation tools
Best Practice: Global Initiatives

Several global initiatives have shown promise in reducing complications related to foetal distress:

  • MOREOB (Managing Obstetrical Risk Efficiently): A comprehensive patient safety, professional development, and performance improvement program for caregivers in labor and delivery units
  • PROMPT (PRactical Obstetric Multi-Professional Training): An evidence-based multi-professional obstetric emergency training course demonstrating improvements in perinatal outcomes
  • Electronic Foetal Monitoring Certification Programs: Standardized training and certification in interpretation of foetal monitoring has been associated with improved outcomes
  • Baby-Friendly Hospital Initiative: While primarily focused on breastfeeding, this WHO initiative promotes practices that support optimal maternal-infant care including appropriate monitoring practices

Summary and Key Points

Definition and Terminology

  • Foetal distress refers to a condition where the foetus shows signs of compromise due to inadequate oxygen or nutrient supply.
  • Modern obstetric practice has moved toward the term “non-reassuring foetal status” for more precise description.

Pathophysiology

  • Primary mechanisms include uteroplacental insufficiency, umbilical cord compression, head compression, and placental dysfunction.
  • Foetal response to hypoxia progresses from initial compensation to progressive hypoxemia and eventually decompensation if not resolved.

Risk Factors

  • Maternal factors include advanced age, hypertensive disorders, diabetes, and chronic medical conditions.
  • Foetal factors include growth restriction, multiple pregnancy, and post-term gestation.
  • Placental and cord factors include abruption, previa, and cord compression events.

Clinical Manifestations

  • Abnormal foetal heart rate patterns (tachycardia, bradycardia, decreased variability, decelerations)
  • Decreased foetal movement
  • Meconium-stained amniotic fluid
  • Abnormal biophysical profile or Doppler studies

Diagnosis

  • Electronic foetal monitoring is the primary diagnostic tool during labor.
  • Three-tier classification system categorizes FHR patterns as Category I (normal), II (indeterminate), or III (abnormal).
  • Additional diagnostic methods include foetal scalp blood sampling, biophysical profile, and Doppler studies.

Management

  • Conservative measures (intrauterine resuscitation): maternal positioning, oxygen administration, hydration, and discontinuation of oxytocin.
  • Expedited delivery via assisted vaginal delivery or cesarean section when conservative measures fail or in acute, severe distress.

Nursing Interventions

  • STOP MOAN mnemonic: Stop oxytocin, Mom on side, Oxygen administration, Assess response, Notify provider.
  • Continuous assessment of foetal and maternal status.
  • Implementation of intrauterine resuscitation measures.
  • Preparation for potential emergency delivery.
  • Documentation of assessments, interventions, and responses.

Complications

  • Foetal/neonatal: birth asphyxia, meconium aspiration syndrome, hypoxic-ischemic encephalopathy, acidosis.
  • Maternal: complications related to emergency delivery, psychological impact.

Prevention

  • Risk assessment and appropriate prenatal care.
  • Management of maternal medical conditions.
  • Appropriate foetal monitoring during labor.
  • Staff training in recognition and management of foetal distress.
  • System-level strategies including standardized protocols and regular drills.
Critical Nursing Considerations

As a nursing student and future nurse, remember these key points when caring for patients with potential foetal distress:

  • Foetal distress requires prompt recognition and action – minutes matter.
  • Develop proficiency in interpreting foetal heart rate patterns and understanding their clinical significance.
  • Know your facility’s protocols for escalation and emergency response.
  • Document thoroughly all assessments, interventions, and responses.
  • Communication with the healthcare team and the laboring woman/family is essential.
  • Prevention through careful monitoring and risk assessment is the best approach.

With proper knowledge, skills, and teamwork, many adverse outcomes related to foetal distress can be prevented or mitigated.

These notes are intended for educational purposes only and should be used alongside clinical instruction and current evidence-based guidelines.

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