What is the clinical evidence from this study?

Study design: Cohort. Population: Postmastectomy microsurgical breast reconstruction (n=358). Intervention: Extended postoperative enoxaparin prophylaxis vs. Short-term (2 weeks) enoxaparin prophylaxis. Primary outcome: Pulmonary embolism (PE) (p=0.04).

What does this research mean for the field?

Extended postoperative enoxaparin prophylaxis significantly reduces rates of pulmonary embolism and deep vein thrombosis without increasing hematoma risk in patients undergoing DIEP flap breast reconstruction. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This study investigates the effectiveness of extended chemoprophylaxis in reducing VTE complications after postmastectomy microsurgical breast reconstruction.

July 26, 2026Aesthetic Surgery Journal Open ForumOpen Access

Assessing the Impact of Extended Lovenox Prophylaxis on Outcomes Following Postmastectomy Microsurgical Breast Reconstruction

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Key result

Extended postoperative enoxaparin associates with ~100% lower PE and DVT rates versus short-term prophylaxis.

P=0.04
n=358

Why the study?

Postmastectomy microsurgical breast free reconstruction was excluded from ACCP guidelines recommending extended chemoprophylaxis for high VTE risk cancer surgery patients.

Does extended postoperative enoxaparin prophylaxis reduce VTE rates compared to short-term prophylaxis in patients undergoing DIEP flap reconstruction?

Population

358 patients who underwent DIEP flap reconstruction

Comparison

Short-term (2 weeks) enoxaparin vs extended postoperative enoxaparin prophylaxis

Design

Retrospective chart review

Authors

SPSajni ParikhTemple University Hospital NMNatalia MejiaFox Chase Cancer Center CSCarolyn SilvermanTemple University

Discussion

Member takes

Implication

May support extended enoxaparin to lower VTE after DIEP reconstruction; hypothesis-generating and requires randomized confirmation before practice change.

Key Points

This study investigates the effectiveness of extended chemoprophylaxis in reducing VTE complications after postmastectomy microsurgical breast reconstruction.
Retrospective chart review of 358 patients undergoing DIEP flap reconstruction from January 2017-June 2025.
Comparison of VTE rates between 62 patients on short-term (2 weeks) and 296 on extended enoxaparin prophylaxis.
Chi-squared analyses to evaluate outcomes before and after extended prophylaxis implementation.
DVT rates were 2.48% in the short-term cohort vs 1.87% in the extended cohort (P = 0.04).
PE rates were 4.9% in the short-term cohort vs 0% in the extended cohort (P = 0.002).
No significant difference in hematoma rates between the two cohorts (P = 0.76).

Study Design

Type

Cohort (n=358)

Multicenter

Structured PICO

Does extended postoperative enoxaparin prophylaxis reduce VTE rates compared to short-term prophylaxis in patients undergoing DIEP flap reconstruction?

Population

358 patients undergoing DIEP flap reconstruction without prior VTE or coagulopathy, evaluated for VTE outcomes after short-term versus extended postoperative enoxaparin prophylaxis.

Exposure

Extended postoperative chemoprophylaxis (enoxaparin 40 mg daily)

Comparator

Short-term (2 weeks) postoperative chemoprophylaxis (enoxaparin 40 mg daily)

Outcome

Rates of pulmonary embolism (PE) and deep vein thrombosis (DVT)hard clinical

Main Result

Absolute Event Rate: 0% vs 4.9%

p-value: p=0.04

Extended postoperative enoxaparin prophylaxis significantly reduces PE and DVT rates without increasing bleeding risk in patients undergoing postmastectomy DIEP flap reconstruction.

Cite This Study

Parikh et al. (2026) conducted a cohort in Postmastectomy microsurgical breast reconstruction (n=358). Extended postoperative enoxaparin prophylaxis vs. Short-term (2 weeks) enoxaparin prophylaxis was evaluated on Pulmonary embolism (PE) (p=0.04). Extended postoperative enoxaparin prophylaxis significantly reduced the rates of pulmonary embolism (0% vs 4.9%, P=0.04) and DVT compared to short-term prophylaxis following DIEP flap reconstruction.

synapsesocial.com/papers/6a65a825d3aea3239cd78a88 https://doi.org/10.1093/asjof/ojag138.003

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Implication

May support extended enoxaparin to lower VTE after DIEP reconstruction; hypothesis-generating and requires randomized confirmation before practice change.

Assessing the Impact of Extended Lovenox Prophylaxis on Outcomes Following Postmastectomy Microsurgical Breast Reconstruction

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Assessing the Impact of Extended Lovenox Prophylaxis on Outcomes Following Postmastectomy Microsurgical Breast Reconstruction

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Also Consider

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