What is the subjective, objective, assessment, and plan for a pregnant patient in labor?

Subjective, Objective, Assessment, and Plan for Pregnant Patient in Labor

The most effective approach to managing a pregnant patient in labor requires systematic assessment using the SOAP format (Subjective, Objective, Assessment, Plan) with continuous monitoring of maternal and fetal well-being to ensure optimal outcomes.

Subjective Assessment

• Obtain information about multiparity, previous rapid or non-hospital deliveries, presence of regular and painful uterine contractions, and urge to push to predict imminent delivery 1
• Document timing of contraction onset, frequency, duration, and intensity 2
• Assess pain level and effectiveness of current pain management strategies 3
• Record time of membrane rupture if applicable, including color and amount of fluid 3
• Note any symptoms of concern such as vaginal bleeding, severe headache, visual disturbances, or decreased fetal movement 4
• Document maternal medical history, particularly conditions that may affect labor management (cardiovascular disease, hypertension, diabetes) 4

Objective Assessment

Maternal Assessment

• Vital signs: blood pressure, heart rate, respiratory rate, temperature, and oxygen saturation 4
• Cervical examination to determine:
  • Dilation (measured in centimeters) 5
  • Effacement (expressed as percentage) 5
  • Station of presenting part 5
  • Position and consistency of cervix 5
  • Calculate Bishop score to evaluate cervical readiness 5
• Uterine contraction pattern: frequency, duration, intensity, and resting tone 2
• Assessment for signs of infection, dehydration, or other complications 1

Fetal Assessment

• Continuous electronic fetal heart rate monitoring is recommended during labor 2, 4
• Evaluate baseline fetal heart rate (normal: 110-160 bpm) 2, 6
• Assess fetal heart rate variability (normal: 6-25 bpm) 6
• Document presence of accelerations (reassuring) 6
• Identify and classify any decelerations as early, variable, late, or prolonged 2, 6
• Correlate decelerations with uterine contractions to determine significance 2

Assessment

• Determine stage and phase of labor based on cervical examination and contraction pattern 7
• Classify labor progress using dilation and descent curves 8, 7
• Evaluate fetal status using the NICHD three-tier fetal heart rate classification system 2:
  • Category I: Normal (reassuring)
  • Category II: Indeterminate (requires continued surveillance and reevaluation)
  • Category III: Abnormal (requires prompt intervention) 2
• Identify any labor abnormalities or complications that may require intervention 8, 7
• Assess risk factors for potential complications during labor 9

Plan

Normal Labor Management

• Position the laboring woman in lateral decubitus position to attenuate hemodynamic impact of contractions 4
• Provide appropriate pain management, considering lumbar epidural analgesia when indicated 4
• Monitor maternal vital signs and fetal heart rate at appropriate intervals 2, 4
• For low-risk women in spontaneous labor, consider intermittent auscultation rather than continuous electronic monitoring 3
• Allow labor to progress naturally when possible, avoiding unnecessary interventions 3

Abnormal Labor Management

• For abnormal fetal heart rate patterns, implement intrauterine resuscitation measures 2:

  1. Change maternal position
  2. Assess maternal vital signs
  3. Discontinue oxytocin if in use
  4. Administer oxygen at 6-10 L/minute
  5. Perform vaginal examination to check for cord prolapse or rapid descent
  6. Administer intravenous fluids
  7. Consider amnioinfusion for recurrent variable decelerations
  8. Assess need for expedited delivery 2

• For labor dystocia or arrest of dilation (≥6 cm):

  • Consider oxytocin augmentation if contractions are inadequate 10, 8
  • Administer oxytocin per protocol for medical (not elective) indications 10
  • Reassess progress regularly using percentile rankings based on adaptive multifactorial models 7

Delivery Preparation

• Prepare for assisted vaginal delivery with forceps or vacuum extraction if indicated 4
• For women with cardiovascular disease, consider specific positioning and monitoring requirements 4
• After delivery, administer slow IV infusion of oxytocin (<2 U/min) to prevent postpartum hemorrhage 4
• Continue maternal hemodynamic monitoring for at least 24 hours after delivery in women with structural heart disease 4

Special Considerations

• For women on anticoagulation therapy with prosthetic heart valves, follow specific protocols for transitioning medications before delivery 4
• For women with severe cardiac conditions (severe aortic stenosis, pulmonary hypertension, or acute heart failure), consider cesarean delivery 4
• Be vigilant for signs of postpartum hemorrhage, especially in high-risk patients 4, 1