Purpose: To evaluate the influence of different vitrectomy probe gauge sizes and their fluidics, under various vacuum settings, on tissue attraction.
Methods: An apparatus was designed to model the retinal membrane during vitrectomy. A cantilever beam was constructed from a wire (diameter, 0.076 mm) with a latex strip (simulating ocular membranes) attached at a right angle to its tip. The beam was clamped vertically in a container of balanced salt solution. The port of the vitrectomy probe (20 gauge, 23 gauge, and enhanced 25 gauge) was aligned with the membrane. With the cutter off, the vacuum was increased until the membrane was attracted into the port. The aspiration flow rate was measured with a noninvasive flow meter. Attraction distance, vacuum pressure, and flow rate were recorded.
Results: For any given distance, the 20-gauge probe needed the lowest amount of vacuum and the highest aspiration flow, while the enhanced 25-gauge and 23-gauge probes needed larger vacuum and smaller aspiration flow rates to attract the membrane into the port.
Conclusion: The sphere of influence on surrounding tissue was greatest with large-gauge vitrectomy probes. This laboratory model indicated that small-gauge probes could be used to target specific tissues while minimizing the effects on adjacent tissue structures.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/IAE.0b013e3182456f4d | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Association between neutrophil to high-density lipoprotein ratio and no-reflow after coronary intervention: A cross-sectional study.
Medicine (Baltimore)
January 2025
Zhengzhou Central Hospital Affiliated to Zhengzhou University, Henan, China.
Inflammatory responses and lipid metabolism disorders are key components in the development of coronary artery disease and contribute to no-reflow after coronary intervention. This study aimed to investigate the association between the neutrophil to high-density lipoprotein ratio (NHR) and no-reflow phenomenon in ST-segment elevation myocardial infarction (STEMI) patients after primary percutaneous coronary intervention (PPCI). This study enrolled 288 patients with STEMI from September 1st, 2022 to February 29th, 2024, in the Zhengzhou Central Hospital Affiliated to Zhengzhou University.
View Article and Find Full Text PDFHigh-flow nasal cannula for pre- and apneic oxygenation during rapid sequence induction intubation in emergency surgery: A systematic review and meta-analysis.
PLoS One
January 2025
Department of Anesthesiology, The Second Affiliated Hospital, The Army Military Medical University, Chongqing, China.
Background: Rapid sequence induction intubation (RSII) is commonly used in emergency surgeries for patients at high risk of aspiration. However, these patients are more susceptible to hypoxemia during the RSII process. High-flow nasal cannula (HFNC) oxygen therapy has emerged as a potential alternative to traditional face mask (FM) ventilation pre- and apneic oxygenation.
View Article and Find Full Text PDFCryptic to conventional cytogenetics: Philadelphia-like ALL presenting with hypereosinophilia.
BMJ Case Rep
January 2025
Department of Internal Medicine, University of Kentucky, Lexington, Kentucky, USA.
BCR::ABL1-like B-lymphoblastic leukaemia (B-ALL) neoplasms lack the BCR::ABL1 translocation but have a gene expression profile like BCR::ABL1 positive B-ALL. This includes alterations in cytokine receptors and signalling genes, such as and Cases with CRLF2 rearrangements account for approximately 50% of cases of Philadelphia-like acute lymphoblastic leukaemia (Ph-like ALL), and the frequency of specific genomic lesions varies with ethnicity such that IGH::CRLF2 translocations are more common in Hispanics and Native Americans.We report two cases of BCR::ABL1-like ALL, with significant eosinophilia.
View Article and Find Full Text PDFEBUS-TBNA and CryoEBUS of the mediastinal lymph node. One hundred seventy-eight cases. Validation of the WHO Reporting System for Lymph Node Cytopathology. Proposed CryoEBUS diagnostic flow chart and indications. The view of the interventional pathologist.
Rev Esp Patol
January 2025
Hospital Universitario Central de Asturias, Pathology Department, Universidad de Oviedo, Oviedo, Spain. Electronic address:
Introduction: Microscopic assessment is essential in the study of mediastinal lymph nodes. Obtaining cytological samples through Endobronchial Ultrasound TransBronchial Needle Aspiration (EBUS-TBNA) has long been considered the gold standard procedure. The implementation of the World Health Organization (WHO) Reporting System for Lymph Node Cytopathology, along with the advancement of the CryoEBUS lymph node technique, has enhanced and refined diagnostic accuracy in this field.
View Article and Find Full Text PDFUterine arteriovenous malformations as a rare differential diagnosis of abnormal uterine bleeding: A case report.
Int J Surg Case Rep
January 2025
Department of Gynecology-Obstetrics, Mohammed V Military University Hospital, Faculty of Medicine and Pharmacy, Mohammed V University, Rabat, Morocco.
Introduction And Importance: Uterine arteriovenous malformations (UAVMs) are rare vascular anomalies caused by abnormal connections between uterine arteries and veins. They can lead to severe bleeding, requiring prompt and accurate diagnosis. Historically treated with hysterectomy, transcatheter vascular embolization has emerged as a fertility-sparing alternative.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!