RUHS, Jaipur, PB B.Sc Nursing Entrance-2020
Obstetrics & Gynaecology
Easy

Which of the following amounts of blood loss following birth marks the criterion for describing postpartum haemorrhage?

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2020

Explanation

  • Postpartum hemorrhage (PPH) is traditionally defined as a blood loss of 500 mL or more following a vaginal delivery.
  • This specific volume is used as a clinical threshold because blood loss exceeding this amount can lead to hemodynamic instability and requires intervention.
  • While the American College of Obstetricians and Gynecologists (ACOG) has updated the definition to a cumulative loss of 1000 mL regardless of delivery route, the 500 mL value for vaginal birth remains the classic and widely tested criterion.
  • For a cesarean delivery, the threshold for PPH is higher, at 1000 mL, due to the surgical nature of the procedure.

Why Other Options Were Wrong

  • Option A: A blood loss of more than 100 mL is well within the normal, expected range following a vaginal delivery and does not signify a hemorrhage.
  • Option B: A blood loss of more than 250 mL is still considered normal physiological bleeding after childbirth and does not meet the clinical criteria for PPH.
  • Option C: A blood loss of more than 350 mL is approaching the upper limit of normal but is not yet classified as postpartum hemorrhage. Almost half of all women delivering vaginally lose this amount or more.

Related Visual

Visual explanation — Related Visual
Clinical Relevance
  • Nursing practice connection: Use the key finding related to Definition of Postpartum Hemorrhage (PPH) to guide bedside assessment, documentation, and the next nursing action.
  • The nurse's role is critical in the early identification of PPH. This involves moving from subjective visual estimation of blood loss to more objective quantitative methods like weighing pads or using calibrated collection drapes.
  • Accurate and timely assessment allows for prompt initiation of the PPH protocol, which includes fundal massage, administration of uterotonics, and escalation of care to prevent progression to hypovolemic shock.
  • What if? If the delivery was via cesarean section, the threshold for PPH would be higher, defined as a blood loss greater than 1000 mL. The principles of management (uterine massage, uterotonics, fluid resuscitation) remain the same, but the acceptable blood loss is greater due to the surgical nature of the delivery.
How to Approach the Question
  • First, identify the core of the question, which asks for the quantitative definition of 'postpartum haemorrhage'.
  • Recall the standard clinical definitions for PPH. Remember that there are different thresholds for vaginal and cesarean births, as well as traditional versus updated guidelines.
  • Since the question is general ('following birth') and does not specify the delivery method, consider the most common and traditionally tested value, which applies to vaginal birth.
  • Compare the given options to the recalled definition. Eliminate the options (100 mL, 250 mL, 350 mL) that represent normal or expected blood loss.
  • Select the option that matches the standard definition of PPH for a vaginal delivery, which is greater than 500 mL.
Concept Tested & Keywords
  • Concept Tested: Definition of Postpartum Hemorrhage (PPH)
  • Stem keywords: blood loss, postpartum haemorrhage, birth, criterion
  • Lead-in keywords: Which
  • Clinical cues: Age/sex group narrows the expected diagnosis, intervention, or normal reference range.
  • Negative lead-in flag: false

Question ID

QtJpppU7WUzTj0oW_B1nxm

Reference Book

E6 Obstetrics Williams pp. 45-64, 48-68

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