Container closure integrity is a critical factor for maintaining product sterility and stability. Therefore, closure systems (found in vials, syringes, and cartridges) are designed to provide a seal between rubber stoppers and glass containers. To ensure that the contained product has maintained its sterility and stability at the time of deployment, the seal must remain intact within acceptable limits. To this end, a mathematical model has been developed to describe vacuum loss in evacuated drug vials. The model computes equivalent leak diameter corresponding to initial air leak rate as well as vacuum loss as a function of time and vial size. The theory accounts for three flow regimes that may be encountered. Initial leak rates from 10(-8) to 10(3) sccm (standard cubic centimeters per minute) were investigated for vials ranging from 1 to 100 mL. Corresponding leak diameters of 0.25-173 μm were predicted. The time for a vial to lose half of its vacuum, the T50 value, ranged from many years at the lowest leak rates and largest vials, to fractions of a second at the highest leak rates and smallest vials. These results may be used to determine what level of initial vacuum leak is acceptable for a given product.
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http://dx.doi.org/10.1002/jps.23652 | DOI Listing |
surgery for rectal cancer often presents multiple tactical and technical challenges due to factors such as the tumor's extent, limited anatomical space, proximity to the anal sphincter complex, and the use of neoadjuvant radiotherapy. These factors can significantly increase the complexity of surgery and the risk of both immediate and delayed complications, which can occur intraoperatively or postoperatively. Objective: the aim of this study was to retrospectively analyze the causes, diagnostic methods, and management of complications in patients who underwent surgery for rectal cancer.
View Article and Find Full Text PDFcolorectal cancer is a common and serious condition, with surgical resection being the primary treatment for localized cases. Anastomotic dehiscence (AD) remains a significant postoperative complication, and anastomoses are typically created using either manual suturing or mechanical stapling, each with specific benefits and challenge. Material and this retrospective study analyzed outcomes in 100 rectal cancer patients who underwent surgical resection, with anastomoses performed via manual suturing (n=50) or mechanical stapling (n=50).
View Article and Find Full Text PDFIntroduction Respiratory distress syndrome (RDS) is a leading cause of morbidity and mortality among preterm infants, necessitating effective treatment strategies. This study compared the efficacy of Beractant (SURVANTA®) to Poractant alfa (CUROSURF®) in treating RDS in preterm infants admitted to Tawam Hospital in the UAE. Methodology This retrospective study included preterm infants from 23+0 to 36+6 weeks of gestation with a diagnosis of RDS and treatment by Beractant or Poractant alfa within 48 hours of life between January 2020 and March 2023.
View Article and Find Full Text PDFSurg Obes Relat Dis
December 2024
Division of Minimally Invasive Surgery, Department of Surgery, University of California San Diego, San Diego, California.
Background: Robotic-assisted bariatric surgery is growing rapidly. The optimal approach to minimize complications remains unclear.
Objective: Assess robot utilization and compare 30-day outcomes for laparoscopic and robotic primary sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB) using the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) database.
Updates Surg
December 2024
Surgery Clinic 3, Regional Institute of Gastroenterology and Hepatology "Prof. Dr. Octavian Fodor", "Iuliu Hațieganul" University of Medicine and Pharmacy, 400394, Cluj-Napoca-Napoca, Romania.
Patients with esophageal cancer and concomitant liver cirrhosis (LC) pose a surgical challenge because of the increased risk of postoperative complications and mortality. Purpose of this study was to review the existing literature and estimate perioperative short-term outcomes of esophagectomy in this patient population. Systematic review and meta-analysis.
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