Can Postpartum Hemorrhage Occur One Week After Delivery?
Yes, postpartum hemorrhage can absolutely occur one week after delivery—this is classified as secondary (or late/delayed) postpartum hemorrhage, which is defined as significant uterine bleeding occurring between 24 hours and 6 weeks postpartum 1.
Understanding the Timeline
Secondary PPH typically presents during the second week after delivery, with one week postpartum falling squarely within this high-risk window 2. The postpartum period carries significant mortality risk, with over 65% of postpartum deaths occurring within the first week and over 80% within two weeks 3.
Common Causes at One Week Postpartum
The most frequent etiologies at this timepoint include:
- Retained products of conception (RPOC) - the most common cause overall 1, 4
- Subinvolution of the placental bed - failure of normal uterine vessel involution 1
- Endometritis/infection - particularly after cesarean delivery 1
- Vascular abnormalities - including pseudoaneurysms and arteriovenous malformations 1
- Uterine scar dehiscence (after cesarean) 1
Key Risk Factors to Identify
Primary postpartum hemorrhage in the index delivery is the strongest predictor (odds ratio 9.3), followed by manual removal of placenta (odds ratio 3.5) 2. If your patient experienced either of these complications initially, maintain heightened vigilance throughout the first 6 weeks postpartum.
Clinical Approach
Initial Assessment
Look specifically for:
- Volume and character of vaginal bleeding
- Vital signs indicating hypovolemia (tachycardia, hypotension)
- Fever or foul-smelling discharge (suggesting infection)
- Abdominal pain or distension
- Signs of shock even without obvious vaginal bleeding 5
Diagnostic Imaging
Pelvic ultrasound (transabdominal and transvaginal with Doppler) is the first-line imaging modality 1. The most diagnostic finding is an echogenic endometrial mass that demonstrates vascularity on Doppler 1. However, be aware that:
- Endometrial thickness up to 2-2.5 cm can be normal in early postpartum 1
- Debris and gas are common (20-25% of cases) 1
- Absence of vascularity doesn't exclude RPOC 1
For hemodynamically unstable patients or when ultrasound is inconclusive, CT with IV contrast or CTA can localize active bleeding and identify surgical causes 1.
Management Considerations
The associated morbidity is substantial: 84% require hospital admission, 63% need surgical evacuation, and 17% require blood transfusion 2. Uterine perforation occurs in approximately 2% of evacuations, with rare cases requiring hysterectomy 2.
Initial management typically includes:
- Antibiotics and uterotonics as temporizing measures
- However, most patients ultimately require uterine evacuation 4
- Pre-operative ultrasound doesn't reliably predict retained tissue better than clinical assessment alone 2
Critical Pitfall
Never dismiss postpartum shock based solely on absence of vaginal bleeding—spontaneous hemoperitoneum can occur with minimal external bleeding, presenting as sudden circulatory collapse with abdominal distension 5. Bedside ultrasound for free fluid is essential in unexplained postpartum shock.
The evidence consistently demonstrates that hemorrhage remains a leading cause of maternal mortality, and secondary PPH deserves more clinical attention than it historically receives 2. Maintain a low threshold for evaluation of any concerning bleeding between 24 hours and 6 weeks postpartum, particularly in patients with the identified risk factors.