Free air within the intraperitoneal cavity most frequently occurs in conjunction with perforation of a hollow viscus and requires urgent surgical intervention. However, approximately 10% of all cases of pneumoperitoneum may not be correlated with disruption of the gastroinestinal tract. In the literature this condition is termed "nonsurgical" (NS) pneumoperitoneum and usually requires conservative management. NS pneumoperitoneum can be classified into the following categories: abdominal, thoracic, gynecologic, and idiopathic. We present a rare case of NS pneumoperitoneum. A 61-year-old woman who underwent a hysterectomy previously is admitted with diffuse abdominal pain without any other symptoms. Chest and abdominal radiographs verified the presence of free air under the diaphragm. We performed an exploration but no evidence of perforated viscus or peritonitis was found. Finally the patient told us that her complaints developed during Jacuzzi usage. We thought therefore that air entered into the intraperitoneal cavity through the vagina by influence of high pressure douche. In the course of postoperative gynecological examination a vaginoperitoneal fistula was detected in the vault which is developed during Jacuzzi usage leading to NS pneumoperitoneum. Essentially, NS pneumoperitoneum usually occurs without signs and symptoms of peritonitis and requires conservative treatment. Detailed physical examination and medical history taking can help to avoid unnecessary surgery in spite of radiological evidence of intraperitoneal free air.
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http://dx.doi.org/10.1556/MaSeb.66.2013.2.2 | DOI Listing |
Proc Natl Acad Sci U S A
January 2025
Physical Intelligence Department, Max Planck Institute for Intelligent Systems, Stuttgart 70569, Germany.
The emerging new generation of small-scaled acoustic microrobots is poised to expedite the adoption of microrobotics in biomedical research. Recent designs of these microrobots have enabled intricate bioinspired motions, paving the way for their real-world applications. We present a multiorifice design of air-filled spherical microrobots that convert acoustic wave energy to efficient propulsion through a resonant encapsulated microbubble.
View Article and Find Full Text PDFConf Proc (Midwest Symp Circuits Syst)
August 2024
Department of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona, USA.
We developed a miniaturized (8 × 8 mm) wireless and battery-free implant for musculoskeletal stimulation. The implant generates an monophasic voltage of up to 11.9 V in a benchtop test with an air link, and it can produce any desired stimulation protocol by responding to the reception of a 2.
View Article and Find Full Text PDFInorg Chem
January 2025
Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States.
Three Sm(II) dibenzo-24-crown-8 (db24c8) complexes were synthesized in anhydrous, air-free conditions via the reaction of SmI with db24c8 and tetrabutylammonium tetraphenylborate ([TBA][BPh]; where needed) in acetonitrile (CHCN), dimethoxyethane (DME), and tetrahydrofuran (THF) to yield [Sm(db24c8)(CHCN)][BPh][I]·CHCN, [Sm(db24c8)(DME)]I, and [Sm(db24c8)(THF)]I, respectively. In each case, a 10-coordinate, staggered dodecahedral (2:6:2) environment is formed around the Sm center that is completed by either two solvent molecules (CHCN or THF) or one bidentate solvent molecule (DME). Inner-sphere solvent molecules can be excluded by reacting SmI with db24c8 in 1:3 THF:toluene to yield Sm(db24c8)I.
View Article and Find Full Text PDFOrg Biomol Chem
January 2025
School of Life Science and Engineering, School of Chemistry, Southwest Jiaotong University, Chengdu, 610031, China.
Under mild visible light conditions, formates facilitate C-O cleavage the EDA complex and SCS strategy, yielding α-carbonyl alkyl radicals. These radicals then react with olefins under air conditions, leading to the synthesis of diaryl 1,4-dicarbonyl compounds. Mechanistic studies reveal that α-formyloxy ketone is generated by the reaction between α-brominated acetophenone and formates, followed by the formation of the EDA complex.
View Article and Find Full Text PDFInorg Chem
January 2025
Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata (IISER Kolkata), Campus Rd, Mohanpur, Haringhata Farm, West Bengal 741246, India.
Utilization of carbon dioxide (CO) as a C1 feedstock to synthesize value-added chemicals using a catalyst made from earth-abundant elements and under mild conditions is a sustainable approach toward carbon neutrality but difficult to achieve. Herein, the CoAlO/AlO composite catalyst is developed and used for the light-driven epoxide to value-added cyclic carbonate conversion using CO. CoAlO/AlO composite catalysts (% Co-AlO) are prepared by calcining cobalt-incorporated Al-oxy-hydroxide at 500 °C under an air atmosphere.
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