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Related Experiment Video

Updated: May 16, 2026

Identification of Footprints of RNA:Protein Complexes via RNA Immunoprecipitation in Tandem Followed by Sequencing (RIPiT-Seq)

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TRAP Sequence - An Interesting Entity in Twins.

R H Srinivas Prasad¹, T Ramachandra Prasad, K Dayananda Kumar

¹Department of Radio-Diagnosis and Imaging, MVJ Medical, College and Research Hospital, Bangalore, Karnataka, India.

Journal of Clinical Imaging Science

|December 12, 2012

Summary

This summary is machine-generated.

Twin reversed arterial perfusion (TRAP) sequence is a rare condition in identical twins. Early diagnosis with Doppler imaging is crucial for managing complications and improving outcomes for the pump twin.

Keywords:

Acardiac twin TRAP sequence color doppler ultrasound

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Area of Science:

Perinatology
Maternal-Fetal Medicine
Medical Imaging

Background:

Twin reversed arterial perfusion (TRAP) sequence is a rare complication of monochorionic multiple gestations.
It involves a normal "pump" twin and an acardiac, developmentally abnormal twin.
The acardiac twin is dependent on the pump twin's cardiovascular system.

Observation:

The acardiac twin often presents with severe anomalies incompatible with survival.
The pump twin faces significant risks, including congestive heart failure, prematurity, and polyhydramnios.
Mortality rates for the pump twin range from 50% to 70%.

Findings:

Gray-scale and color Doppler imaging are essential for accurate diagnosis of TRAP sequence.
These imaging techniques aid in identifying features indicative of poor prognosis.
Prompt diagnosis facilitates timely management strategies.

Implications:

Early detection and vigilant follow-up are critical for optimizing outcomes in TRAP sequence.
Effective management can mitigate risks to the pump twin.
This case series highlights the indispensable role of advanced imaging in managing this rare condition.