Postpartum Infection and Sepsis

Postpartum (puerperal) infection is infection of the genital tract or related structures arising after childbirth, historically called childbed fever, and maternal sepsis is the life-threatening organ dysfunction that can follow when such infection triggers a dysregulated host response. Together they remain a leading direct cause of maternal morbidity and death worldwide.

Definition

Puerperal infection is bacterial infection of the genital tract or associated structures occurring after delivery, and maternal sepsis is defined by life-threatening organ dysfunction resulting from infection during pregnancy, childbirth, or the postpartum period.

Scope

The topic covers the principal postpartum infections, endometritis, wound and episiotomy infection, mastitis, and urinary tract infection, and their progression to maternal sepsis. It addresses recognition, microbiology, and global burden as reference material, without offering diagnostic thresholds or treatment regimens for individual patients.

Core questions

• Which infections most commonly arise in the puerperium and from what sources?
• How does localized postpartum infection progress to maternal sepsis?
• What is the global contribution of puerperal infection to maternal mortality?
• How is maternal sepsis conceptually distinguished from uncomplicated infection?

Key concepts

• Puerperal endometritis
• Childbed fever
• Maternal sepsis and organ dysfunction
• Wound and episiotomy infection
• Postpartum mastitis
• Polymicrobial genital-tract infection
• Asepsis and infection prevention

Mechanisms

After delivery the placental site is a raw wound and the genital tract is exposed to ascending organisms, so the puerperium carries an elevated risk of infection, often polymicrobial and arising from endometritis. When the infection provokes a dysregulated host response, the result can be sepsis with hypoperfusion and organ dysfunction. Pregnancy-related immune modulation contributes to susceptibility and to atypical presentations (kourtis-2014). Surveillance data show that maternal infection frequently originates in the genital and urinary tracts and that a notable fraction of affected women develop or are at risk of sepsis (bonet-2020-gloss).

Clinical relevance

Because puerperal infection can escalate rapidly to sepsis, it is a core subject of maternal-safety efforts and of historical importance in the development of antisepsis. This entry describes the entity and its burden as reference content and is not a guide to diagnosing or treating infection in an individual.

Epidemiology

Maternal infection and sepsis are among the leading direct causes of maternal death globally, with their relative contribution varying across regions and over time (kassebaum-2014). A WHO multi-country inception cohort documented the frequency, sources, and management of maternal infection across diverse health facilities and underscored sepsis as a major contributor to severe maternal outcomes (bonet-2020-gloss).

History

Puerperal fever was a feared and frequently fatal complication of childbirth before the germ theory of disease; nineteenth-century work on hand hygiene and asepsis in maternity wards was pivotal in reducing it, and the modern concept of maternal sepsis extends this lineage into contemporary critical-care and maternal-safety frameworks.

Seminal works

• bonet-2020-gloss
• kourtis-2014

Frequently asked questions

What is puerperal infection?

It is infection of the genital tract or related structures that develops after childbirth, often beginning as endometritis at the healing placental site; historically it was known as childbed fever.

How is maternal sepsis different from a postpartum infection?

A postpartum infection is the infection itself, whereas maternal sepsis is the life-threatening organ dysfunction that arises when the body's response to that infection becomes dysregulated; sepsis represents a more severe and dangerous stage.