Presentation and surgical management of a gossypiboma presenting with small bowel obstruction

Gossypiboma is a cotton-based foreign body retained within the human body following a surgical procedure. Transmural migration of intra-abdominal gossypiboma into the small bowel is rare; however, it can present with life-threatening complications. We report a case of a 28-year-old male who presented with small bowel obstruction due to gossypiboma, 11 years after the initial surgical procedure. Due to the size of the retained surgical swab, 40 cm × 40 cm, an open surgical approach was preferred. Following removal of the retained swab and bowel reconstruction, the patient was followed in clinic and discharged without complications. Staff education and adherence to operating room record-keeping protocols can prevent gossypiboma. To the best of our knowledge such a long interval between the initial surgery and presentation of gossypiboma that large has not been previously reported in the literature.

Successful Endoscopic Removal of a Transmural Internally Migrating Gossypiboma

An accidentally retained sponge inside the body of a patient (gossypiboma) is a rare and serious adverse event after a surgical procedure with serious medicolegal implications and complications. It is commonly associated with abdominal surgeries with cholecystectomy most commonly implicated. Whorl-like appearance or mottled translucencies and radiopaque marker on imaging is diagnostic. Transmural migration into a hollow viscous has been infrequently reported. The preferred approach for the removal of gossypiboma is surgery. However, in cases of complete transmural migration, endoscopic removal remains a viable option.

Endocardial-Epicardial Phase Mapping of Prolonged Persistent Atrial Fibrillation Recordings

Background: Endocardial-epicardial dissociation and focal breakthroughs in humans with atrial fibrillation (AF) have been recently demonstrated using activation mapping of short 10-second AF segments. In the current study, we used simultaneous endo-epi phase mapping to characterize endo-epi activation patterns on long segments of human persistent AF. Methods: Simultaneous intraoperative mapping of endo- and epicardial lateral right atrium wall was performed in patients with persistent AF using 2 high-density grid catheters (16 electrodes, 3 mm spacing). Filtered unipolar and bipolar electrograms of continuous 2-minute AF recordings and electrodes locations were exported for phase analyses. We defined endocardial-epicardial dissociation as phase difference of ≥20 ms between paired endo-epi electrodes. Wavefronts were classified as rotations, single wavefronts, focal waves, or disorganized activity as per standard criteria. Endo-Epi wavefront patterns were simultaneously compared on dynamic phase maps. Complex fractionated electrograms were defined as bipolar electrograms with ≥5 directional changes occupying at least 70% of sample duration. Results: Fourteen patients with persistent AF undergoing cardiac surgery were included. Endocardial-epicardial dissociation was seen in 50.3% of phase maps with significant temporal heterogeneity. Disorganized activity (Endo: 41.3% versus Epi: 46.8%, P =0.0194) and single wavefronts (Endo: 31.3% versus Epi: 28.1%, P =0.129) were the dominant patterns. Transient rotations (Endo: 22% versus Epi: 19.2%, P =0.169; mean duration: 590±140 ms) and nonsustained focal waves (Endo: 1.2% versus Epi: 1.6%, P =0.669) were also observed. Apparent transmural migration of rotational activations (n=6) from the epi- to the endocardium was seen in 2 patients. Electrogram fractionation was significantly higher in the epicardium than endocardium (61.2% versus 51.6%, P <0.0001). Conclusions: Simultaneous endo-epi phase mapping of prolonged human persistent AF recordings shows significant Endocardial-epicardial dissociation marked temporal heterogeneity, discordant and transitioning wavefronts patterns and complex fractionations. No sustained focal activity was observed. Such complex 3-dimensional interactions provide insight into why endocardial mapping alone may not fully characterize the AF mechanism and why endocardial ablation may not be sufficient. Graphic Abstract: A graphic abstract is available for this article.