Eg 3870utk

Manufactured by Pentax

Sourced in Japan, Germany, United States, United Kingdom

The EG-3870UTK is a laboratory equipment product manufactured by Pentax. It is designed for specific technical functions, but a detailed description cannot be provided in an unbiased and factual manner without extrapolation on its intended use.

Automatically generated - may contain errors

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34 protocols using eg 3870utk

Retrospective Study of Pancreatic Mass Evaluation

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This was a retrospective study including patients with PDAC or PNET who underwent CEH-EUS and EUS-guided fine needle aspiration/biopsy (EUS-FNA/ FNB) at the Research Center of Gastroenterology and Hepatology, Craiova between 2017-2019. The study was performed in accordance with standard ethical guidelines approved by the institutional review board and in accordance with the Declaration of Helsinki. The study was non-interventional and all procedures were performed according to the clinical daily management of patients with focal pancreatic masses. A convex linear-array endoscope (Pentax EG-3870UTK) and a compatible ultra-sonography machine (Arieta V70, Hitachi) were used in order to describe tumor characteristics (echogenicity, size, echostructure). EUS-FNA was performed using a 22-gauge needle (Expect or Acquire Boston Scientific).
Clinical and pathological characteristics were analysed by chart review. Median follow up time was 12 months. The final diagnosis was established based on the FNA/FNB cytopathology results, histological examination of the surgically resected specimens and/or clinical/ radiological follow-up of at least 6 months.

Constantin A.L., Cazacu I., Burtea D.E., Cherciu Harbiyeli I., Bejinariu N., Popescu C., Serbanescu M., Tabacelia D., Copaescu C., Bhutani M., Stroescu C, & Saftoiu A. (2022). Quantitative contrast-enhanced endoscopic ultrasound in pancreatic ductal adenocarcinoma and pancreatic neuroendocrine tumors: can we predict survival using perfusion parameters? A pilot study. Medical ultrasonography, 24(4).

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High-end EUS Lesion Imaging Protocol

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The imaging equipment consisted of a linear EUS (EG 3870 UTK, Pentax Medical Corporation) coupled with a high-end ultrasound system (Hitachi Preirus). Each lesion was assessed using:

Udriștoiu A.L., Cazacu I.M., Gruionu L.G., Gruionu G., Iacob A.V., Burtea D.E., Ungureanu B.S., Costache M.I., Constantin A., Popescu C.F., Udriștoiu Ș, & Săftoiu A. (2021). Real-time computer-aided diagnosis of focal pancreatic masses from endoscopic ultrasound imaging based on a hybrid convolutional and long short-term memory neural network model. PLoS ONE, 16(6), e0251701.

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Endoscopic Drainage of Walled-Off Necrosis

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All patients underwent endoscopy with a linear echoendoscope under general anesthesia or conscious sedation. Patients were administered broad-spectrum antibiotics during the procedure. All procedures were performed by endosonographers with extensive experience in the endoscopic management of pancreatic fluid collections.
A therapeutic Pentax echoendoscope (EG-3870UTK; Pentax, Tokyo, Japan) and Hitachi ultrasound workstation (EUB 7500, HI Vison Preirus; Hitachi Medical Corp., Tokyo, Japan) were used. EUS imaging with Doppler flow guidance was used to assess local vasculature and to determine the cyst size, necrosis, and puncture site (transgastric or transduodenal).
Between October 2012 and December 2015, the BFMS was the only specifically designed metal stent available in the UK and was used exclusively in our unit to drain WON. After December 2015, the LAMS stent was also available. Between December 2015 and March 2016, both BFMS and LAMS were used, and choice of stent was dependent on availability. In March 2016, the cystotome that we used as part of the BFMS procedure became unavailable due to production problems. From that point, LAMSs were exclusively used for first WON drainage.

Bekkali N.L., Nayar M.K., Leeds J.S., Charnley R.M., Huggett M.T, & Oppong K.W. (2017). A comparison of outcomes between a lumen-apposing metal stent with electrocautery-enhanced delivery system and a bi-flanged metal stent for drainage of walled-off pancreatic necrosis. Endoscopy International Open, 5(12), E1189-E1196.

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Endoscopic Drainage Techniques for Peripancreatic Fluid Collections

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In all procedures, a therapeutic echoendoscope (working channel 3.8 mm, EG-3870UTK, Pentax, Tokyo, Japan) and a modern ultrasound processor (HI VISION Ascendus, Hitachi), were used. In general, patients were examined under general anesthesia while they underwent EUS-guided drainage with DPPS, and under continuous sedation (midazolam; alfentanil) when undergoing EUS-guided drainage with LAMS.
In all procedures, the echoendoscope was introduced, the PFC was visualized by ultrasound, and the best possible access route without interfering vessels was identified. Before drainage and by means of ultrasound, the endosonographer confirmed that the estimated point of access was at a sufficient distance distal from the gastroesophageal junction, and that the stomach wall and the wall of the PFC were properly adherent. The LAMS were removed within 3 months. In general, the DPPS were removed after 18 months, given the nature of this treatment. The 2 methods were, however, compared at a 3-month follow up, when the effect of the treatment is thought to be final.

Khodakaram K., Bratlie S.O., Hedenström P, & Sadik R. (2024). Equivalent efficacy and safety of plastic stents and lumen-apposing metal stents in the treatment of peripancreatic fluid collections: a prospective cohort study. Annals of Gastroenterology, 37(3), 362-370.

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EUS Elastography and FNA for PMs

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All procedures were performed by two expert endoscopists (CRM and RV), who perform ≥ 300 EUS procedures per year. The patients were examined under general anesthesia using a 3.8 mm working-channel linear-array echoendoscope (EG3870UTK, Pentax Medical, Pentax, Hamburg, Germany) attached to a Hitachi AVIUS Ultrasound Console (Avius Hitachi, Tokyo, Japan).
First, PMs or any associated LNs were examined under conventional B-mode scanning. Then, EUS elastography of the region of interest was performed using the ultrasound console. Tissue hardness was measured qualitatively and quantitatively in all regions of interest via EUS color maps and the SR, respectively. Subsequently, EUS-guided FNA was performed using a 22-gauge needle (Expect^®, Boston Scientific, Marlborough, MA). A pathologist blinded to the EUS elastography results performed the histological analysis.

Puga-Tejada M., Del Valle R., Oleas R., Egas-Izquierdo M., Arevalo-Mora M., Baquerizo-Burgos J., Ospina J., Soria-Alcivar M., Pitanga-Lukashok H, & Robles-Medranda C. (2022). Endoscopic ultrasound elastography for malignant pancreatic masses and associated lymph nodes: Critical evaluation of strain ratio cutoff value. World Journal of Gastrointestinal Endoscopy, 14(9), 524-535.

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Transgastric EUS-guided Pancreatic Cyst Aspiration

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A linear echoendoscope (EG3870UTK, Pentax, Tokyo, Japan) was used to perform the EUS examination under conscious sedation. The PCL was accessed by the transgastric/transduodenal route using a 22/25-gauge needle (Wilson-Cook/Olympus/Boston Scientific). The cyst fluid was first aspirated for the analysis of CEA. Then, the needle was moved very gently within the cyst for 60–120 s under aspiration. A cytopathology technician was present and created a smear on a piece of glass, and the rest of the yield was sent in ThinPrep fluid to the cytopathologist. If there was enough cyst fluid, the amylase level was analysed as well.

Wesali S., Demir M.A., Verbeke C.S., Andersson M., Bratlie S.O, & Sadik R. (2020). EUS is accurate in characterizing pancreatic cystic lesions; a prospective comparison with cross-sectional imaging in resected cases. Surgical Endoscopy, 35(12), 6650-6659.

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Endoscopic Management of Fistulae

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The choice to perform ERCP or diagnostic EUS during the same session as fistula creation or during a second session was operator- and procedure-dependent. ERCP was preferred during the initial session if the indication was urgent, i. e. cholangitis. There was a tendency to perform ERCP during a second session if the fistula was JG, or if the angle of the LAMS in the lumen following deployment was deemed to be unfavorable. All ERCPs were performed using a duodenoscope (ED34-i10T; Pentax, Montvale, New Jersey, United States) via the newly created fistula. ERCP with cholangioscopy was performed, if indicated, in addition to traditional cholangiography. Diagnostic EUS was performed using a linear echoendoscope (EG-3870UTK; Pentax, Montvale, New Jersey, United States).

Bahdi F., George R., Paneerselvam K., Nguyen D., Abidi W.M., Othman M.O, & Raijman I. (2022). Comparison of endoscopic ultrasound-directed transgastric endoscopic retrograde cholangiopancreatography outcomes using various technical approaches. Endoscopy International Open, 10(4), E459-E467.

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EBUS-TBNA and EUS-FNA for Tissue Sampling

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EBUS-TBNA was performed with a convex probe endobronchial ultrasound for line array scanning (BF-UC206FW, Olympus) and a 22-gauge ultrasound bronchial biopsy needle for tissue aspiration (ECHO-HD-22-EBUS-O, Cook). We performed EUS-FNA with a convex ultrasound endoscope (EG-3870UTK, Pentax) and a 22-gauge ultrasound biopsy needle (ECHO-3-22, Cook). The biopsy specimens were collected for cytology, histopathology and molecular testing. Rapid on-site evaluation of cytopathology was not performed.

Su W., Tian X.D., Liu P., Zhou D.J, & Cao F.L. (2020). Accuracy of endoscopic ultrasound-guided needle aspiration specimens for molecular diagnosis of non-small-cell lung carcinoma. World Journal of Clinical Cases, 8(21), 5139-5148.

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EUS-Guided Fine-Needle Biopsy for Diagnosis

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A linear echoendoscope (EG3870UTK, Pentax, Japan) and an ultrasound processor (HI VISON Ascendus, Hitachi, Tokyo, Japan) were used to examine the patients under deep sedation. The characteristics of target lesions were recorded. Before sampling, the echoendoscope was stabilized in the stomach or in the duodenum. Then, transmural puncture of the target lesion was performed by EUS-FNB using a 22 gauge reverse-bevel needle (EchoTip Procore®, Wilson-Cook Medical, Limerick, Ireland) and by applying fanning and standard suction^{21 (link)}. All EUS-procedures of the study were performed by either of two dedicated and experienced endosonographers (> 1000 procedures).
The yield of EUS-FNB was put into formalin tubes and the FNB-core was assessed macroscopically. Additional FNB-passes were performed if the cores were considered inadequate at gross examination. No fixed number of passes was performed. Routine EUS-FNA (EchoTip®, Wilson-Cook Medical), and not EUS-FNB, was preferred during some periods when diagnostics was performed by subspecialized cytopathologists or if no FNB-needle was available on-site.

Appelstrand A., Bergstedt F., Elf A.K., Fagman H, & Hedenström P. (2022). Endoscopic ultrasound-guided side-fenestrated needle biopsy sampling is sensitive for pancreatic neuroendocrine tumors but inadequate for tumor grading: a prospective study. Scientific Reports, 12, 5971.

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EUS-Guided Tissue Sampling Protocol

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EUS‐guided tissue sampling was performed according to a standard protocol, using a convex array echoendoscope (Pentax EG‐3870 UTK, Pentax EG‐3270 UK, Olympus UTC 140/180, Olympus linear GF‐UCT180). Tissue sampling was done by endosonographers, who performed between 25 and 100 EUS‐guided tissue sampling procedures annually. The optimal sampling position was determined by scanning the target lesion and its environment with color and pulsed Doppler. Patients were punctured using a 19‐, 22‐ or 25‐gauge FNA needle (EchoTip; Cook Medical, or Expect; Boston Scientific). Per target lesion, the trainees performed two smears from a single pass. All residual material was processed according to the standard protocols of the laboratories involved (Table 1). Furthermore, the number of passes, sampling strategy, and use of additional sampling techniques (eg, applying negative suction with a syringe) was left at the discretion of the endosonographers. If available, on‐site pathological assistance was allowed, but only after the trainee had performed the study smears. The on‐site pathological assistance was not allowed to comment on in the glass slide preparation of the trainee.

van Riet P.A., Quispel R., Cahen D.L., Erler N.S., Snijders‐Kruisbergen M.C., Van Loenen P., Poley J., van Driel L.M., Mulder S.A., Veldt B.J., Leeuwenburgh I., Anten M.G., Honkoop P., Thijssen A.Y., Hol L., Hadithi M., Fitzpatrick C.E., Schot I., Bergmann J.F., Bhalla A., Bruno M.J, & Biermann K. (2020). Optimizing cytological specimens of EUS‐FNA of solid pancreatic lesions: A pilot study to the effect of a smear preparation training for endoscopy personnel on sample quality and accuracy. Diagnostic Cytopathology, 49(2), 295-302.

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