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-Point-of-care ultrasound of the right upper quadrant revealing a thickened peritoneal stripe and comet-tail artifact, both of which are direct signs of a perforated viscus.

-Point-of-care ultrasound of the right upper quadrant revealing a thickened peritoneal stripe and comet-tail artifact, both of which are direct signs of a perforated viscus.

Contexts in source publication

Context 1
... significant free air in the peritoneum, ultrasound imaging may produce an abdominal A-line pattern with the appearance of A-line reverberations throughout the ultrasound field, similar to that of a pneumothorax. Increased echogenicity of a peritoneal stripe is associated with a comet-tail appearance because of reflection artifacts created at the interface of soft tissue and air (Fig 1). Assessing for a peritoneal stripe is best performed with ultrasound examination in the right upper quadrant in the prehepatic space. ...
Context 2
... significant free air in the peritoneum, ultrasound imaging may produce an abdominal A-line pattern with the appearance of A-line reverberations throughout the ultrasound field, similar to that of a pneumothorax. Increased echogenicity of a peritoneal stripe is associated with a comet-tail appearance because of reflection artifacts created at the interface of soft tissue and air (Fig 1). Assessing for a peritoneal stripe is best performed with ultrasound examination in the right upper quadrant in the prehepatic space. ...

Citations

... When transportation for CT imaging is not feasible, bedside ultrasonography could be a rapid and life-saving modality to diagnose pneumoperitoneum, as repeatedly emphasized in CHEST Ultrasound Corner presentations. 1,3,4 The shifting gas sign could make the diagnosis of pneumoperitoneum more secure. We thank Dr Keng and colleagues for reading our Ultrasound Corner case presentation, 1 focused on bedside ultrasonography for the diagnosis of pneumoperitoneum. ...