Needle Type Research Articles

Mechanical Behaviour of Normal Concrete using Fibre of Pine Tree Needle Leaves

This research was carried out to study the behaviour of concrete, specifically flexural strength, by incorporating two types of pine needle leaves (green, and brown) recycled as fibre reinforcement in the concrete. The other goal of the study is to compare the two types of fibre and determine the maximum proportion of fibre to be added in the normal concrete. OPC concrete with 0%, 1% and 2% pine needle leaves fibre (green, and brown) was prepared based on the total weight of the mixture. At an ambient temperature of 28 ± 2°C, the specimens were checked for flexural strength (FS). Laboratory test results based on short term investigation reveals that the flexural strength of concrete containing brown pine fibre (BPF) is higher than that of Green pine fibre (GPF), and also higher than normal (OPC) concrete. The optimum proportion of pine needle leaf fibre is the brown fibre (fallen leaves) to be added in the concrete as fibre is 1% by the total weight of the mixture, which gave a positive reaction from the test that was performed.

Paediatric bone lesions: diagnostic accuracy of imaging correlation and CT-guided needle biopsy for differentiating benign from malignant lesions.

To determine the sensitivity, specificity and accuracy of CT-guided needle biopsy (CT-NB) for distinguishing benign and malignant lesions in children with suspected primary bone tumours, and to assess the correlation between imaging diagnosis and final diagnosis. Retrospective review of children who underwent CT-NB of a suspected primary bone tumour between October 2016 and October 2019. Data collected included anatomical location, imaging diagnosis, type of needle, type of biopsy sample, CT-NB diagnosis, final diagnosis and post-procedural complications. The final diagnosis was established based on surgical histology or clinical/imaging follow-up. 125 patients met the inclusion criteria (68M, 57F: mean age 11 years; range 10 months-18 years). Biopsy was performed using a 10 cm Jamshidi needle (10G n = 96; 13 G n = 8); 14G Tru-Cut needle (n = 18); 14G Temno needle (n = 3). The commonest anatomical locations were the femur (n = 40), tibia (n = 25) and humerus (n = 16), while the commonest diagnoses were osteosarcoma (n = 35), CRMO (n = 15) and LCH (n = 14). A benign tumour was correctly identified on imaging in 100% of cases, and a malignant tumour in 95.8%. Sensitivity, specificity and diagnostic accuracy of CT-NB for distinguishing malignant from benign lesions were 98%, 100 and 99%. Of 24 indeterminate biopsy results, all that had a non-aggressive radiological appearance were benign. No immediate complications were recorded. CT-NB represents a safe and very effective tool for differentiating benign and malignant lesions in children presenting with a suspected primary bone tumour. Suspected radiological diagnosis plays a pivotal role in the management of indeterminate biopsy results. Paediatric bone tumours pose a significant diagnostic and therapeutic challenge. The interpretation of the imaging findings is essential for the successful management of indeterminate histological results.

Novel Needle for Intravitreal Drug Delivery: Comparative Study of Needle Tip Aspirates, Injection Stream and Penetration Forces.

PurposeTo study the efficacy of a novel needle for intravitreal injection (IVI) in comparison to the conventional needle under experimental conditions.MethodsThe newly designed 30-gauge (G) needle (NDN) (EP 18158 542.3, patent pending) with occluded outer orifice and a side port for drug delivery was compared to the conventional standard hypodermic 30 G needle for IVI (SHN). An animal study to obtain needle tip aspirates was performed on 10 albino rat eyes. During IVIs, cellular content, which was cut by the needle tip, was aspirated. Cellular material was studied in regard to cell types and their quantity. The injection stream was studied using trypan blue dye in vitro and pig cadaver eyes. The penetration force was tested on polyurethane Testing Foil Strips PU 04 (Melab, Leonberg, Germany) by applying a velocity of 100 mm/min. The results were analyzed using descriptive statistics, correlation matrices and t-test methods with p<0.05 as statistically significant.ResultsCytological analysis of the needle aspirates showed the presence of cellular content in each case. The amount of conjunctival, ciliary body epithelial cells and granulated basophilic protein sediments (sign of cellular damage) in the case of the NDN tips was significantly lower compared to the SHN. The average penetration force of the NDN was 0.791 N, and in the case of the SHN was 0.566 N. The injection stream study revealed a difference in the initial injection phase between the two needle types, although the diffuse filling of the vitreous area which surrounded the needle tip appeared to be similar.DiscussionThe NDN demonstrated superior performance with regard to a significantly reduced number of cells being captured by the needle tip. Delivery of the injected fluid into the vitreous cavity was comparable. In order to investigate superior properties of the NDN needle design, further studies with improved prototypes would be necessary.

Conhecimento dos enfermeiros de um hospital de ensino sobre manejo do cateter venoso central totalmente imolantado

Objetivo: conhecer as ações dos enfermeiros no manejo do Cateter Venoso Central Totalmente Implantado em um hospital de ensino. Método: Trata-se de um estudo transversal, de caráter descritivo, de abordagem quantitativa. A pesquisa foi submetida ao Comitê de Ética em Pesquisa do Hospital Universitário Walter Cantídio, obtendo parecer favorável. A coleta de dados ocorreu com enfermeiros de uma unidade de internação para pacientes oncohematológicos de um hospital de ensino na cidade de Fortaleza-CE. Aceitaram participar da pesquisa doze enfermeiros. Resultados: A análise dos dados permitiu destacar algumas realidades no manejo do dispositivo: apenas dois enfermeiros são especialistas em oncologia, dúvidas em relação ao preparo da pele para punção do cateter e o curativo adequado, configuram-se como pontos fracos. Como pontos fortes, destaca-se: ângulo de inserção da agulha e o tipo de agulha ideal para a punção do cateter. Conclusão: Com os resultados dessa pesquisa, pode haver sensibilização da instituição para realizar treinamentos frequentes para os enfermeiros do setor e maior interesse dos profissionais no aprimoramento das ações seguras no que diz respeito a punção do cateter venoso central totalmente implantado.

Defect Localization Inside Simulated MV Switchgear Based on Cumulative Energy Curve Using Transient Earth Voltage Sensors

The partial discharge (PD) leads to catastrophic failure of the medium voltage (MV) switchgear insulation. Determination of the PD source (defect) location in high voltage (HV) equipment is very important in the maintenance procedures and in isolating the root cause of PD generation. In this paper, the transient earth voltage (TEV) detection method was used to acquire defect-initiated PD signals in a simulated MV switchgear model. An array of four TEV sensors were placed on the surface walls outside an MV switchgear tank to acquire the PD signals generated from the known location(s)/coordinates of sharp needle type defect inside the tank. The time difference of arrival (TDOA) between signals that are captured by the TEV sensors array was critically analyzed. Estimating the TDOA between PD signals generated by PD source at a known location with high accuracy is of great importance for accurate defect localization. The cumulative energy method (CEM) is used to estimate the onset time point of each TEV signal. The estimated TDOA by the cumulative energy method is compared with actual and expected TDOA based on known coordinates of PD source and TEV sensors. Experimental data are used as a basis for determining the TEV method accuracy for PD source localization. Experimental results show the average error of time difference is about 1.34 ns, which is equivalent to the propagation distance of 0.4 m.

Percutaneous Image-Guided Anterior Screw Fixation of the Odontoid Process.

To describe the technique of percutaneous image-guided anterior screw fixation of the odontoid process in five patients using hydrodissection of the jugulo-carotid and pre-vertebral spaces. Between 03/2018 and 03/2020, five patients from two university hospitals underwent a percutaneous image-guided anterior screw fixation of the odontoid process for one pathological fracture, two impending fractures and two traumatic fractures of the dens. Technical success was defined as a satisfactory positioning of the screw in the odontoid. Detailed data with the number and type of needles required, the time to perform hydrodissection, the volume of fluid used, the time for bone access, the size and lengths of the screws used, technical success, complications, clinical outcomes and follow-up were retrospectively assessed. Technical success was achieved in 100% (5/5 cases), with a mean volume of hydrodissection of 218 ± 8.4mL (range 210-230). Mean total procedure time was 112 ± 34min (range 70-160). The lengths of the screws ranged from 30mm to 55mm. Additional cementoplasty was performed in the three malignant cases. VAS scores dropped on a 10-point scale from mean 5.8 ± 2.2 pre-procedure to 0.8 ± 0.4 after the procedure. No major complication occurred. Percutaneous image-guided anterior screw fixation of the odontoid process using hydrodissection of the jugulo-carotid and pre-vertebral spaces is technically feasible and seems safe.

A randomized noninferiority trial comparing the diagnostic yield of the 25G ProCore needle to the standard 25G needle in suspicious pancreatic lesions.

Background and Objectives: The aim of the study was to perform the first randomized trial comparing the diagnostic yield, bloodiness, and cellularity of the 25G standard needle (25S) and the 25G ProCore™ needle (25P).Materials and Methods: All patients referred to the tertiary care referral center for EUS guided fine-needle aspiration (EUS-FNA) of suspicious solid pancreatic lesions were eligible. EUS-FNA was performed in each lesion with both 25S and 25P needles (the choice of the first needle was randomized), using a multipass sampling pattern, without stylet or suction. Rapid on-site evaluation was used when possible. Pap-stained slides were read by a single experienced cytopathologist, blinded to the needle type.Results: One hundred and forty-three patients were recruited. Samples were positive for cancer in 122/143 (85.3%) with the 25S needle versus 126/143 (88.1%) with the 25P needle, negative in 17/143 (11.9%) with the 25S needle versus 13/143 (9.1%) with the 25P needle, and suspicious in 4/143 (2.8%) with each needle. There was no difference in any outcome based on the type of the first needle. No carryover effect was detected (P = 0.214; NS). Cumulative logistic regression analyses showed no associations between the type of needle and diagnostic yield for cancer, cellularity, or bloodiness. The difference in the yield for cancer was 2.9% (−4.2; 10.1%); with the confidence interval upper within the predetermined noninferiority margin of 15%.Conclusion: The 25S needle is noninferior to the 25P needle for diagnosing cancer in suspicious pancreatic lesions.

Priority of PET-CT vs CT Thorax for EBUS-TBNA 22G vs 19G: Mesothorax Lymphadenopathy.

Introduction: Lung lesions and undiagnosed mesothorax lymphadenopathy is an issue that several doctors face in the everyday clinical practice. PET-CT and CT of the thorax are usually the first examinations to identify characteristics of the lesions before biopsy.Patients and Methods: We performed a retrospective study with 450 patients that had EBUS-TBNA with 22G, Upgraded 22G and 19G needles with and without PET-CT in order to identify the cost effeteness of performing EBUS-TBNA before or after PET-CT. All centers used the same PET-CT equipment and EBUS-TBNA system. Three types of needle were used for the endoscopy in order to identify similarities and differences for the cost-effectiveness. The costs in every center for every examination and materials were the same.Results: There were more block slices for 19G>22Gupgraded>21G>22G and there was cost-effectiveness when in general PET-CT was performed prior to biopsy of any lesion. 19G needle was more effective for lymphomas, while 22Gupgraded and 21G needles were more cost-effective when used for smaller lesions for primary lung cancer of metastatic disease.Conclusions: We have been using PET-CT and EBUS-TBNA in the everyday clinical practice according to the current guidelines for initial disease staging and re-staging. However; we can also use both in a cost effective method based on the initial radiologic findings.

Physical, chemical, mechanical, and micromorphological characterization of dental needles.

BackgroundIn anesthetic techniques, touching bones can cause needle bending. Theoretically, a needle should support such deflection without fracturing. However, it is possible that a needle may fracture depending on the quality and type of needle used. This study evaluated the physical, chemical, and micromorphological characteristics of long and short dental anesthetic needles, as well as the mechanical properties of flexural load and bending resistance when needles are subjected to different bending angles.MethodsLong and short needles (30G, Jets, Misawa, Selekto, Terumo, Unoject and 27G, Dencojet, Injex, Jets, Misawa, Procare, Setoject XL, Terumo) were evaluated. Scanning electron microscopy was used to evaluate the needle bevels and energy-dispersive X-ray spectroscopy was used for the chemical analysis of needle compositions. Flexural loading and bending strength assessments were performed using a universal testing machine by bending the needles (n = 5) to angles of 30°, 60°, or 90°, or until fracture occurred.ResultsThe Injex 27G, Jets 27G, and Septoject XL 27G needles were all less than 30 mm in length. There were small percentage variations in the chemical compositions of the needles. Superior smoothness was observed for the Unoject 30G needle, which exhibited the highest fracture resistance at 60°. The Jets 30G needle exhibited greater resistance to fractures at 90°. The Procare 27G needle exhibited the highest load resistance to bending, followed by the Septoject XL 27G needle, and both needles were tied for the lowest fracture resistance. No needle fractured when bent to 30° or at less than three bends to 60° or 90°.ConclusionsGreater needle resistance to bending increases the probability of early fracturing. Thinner and shorter needles are more resistant than longer and thicker needles. Performing a single bend does not result in any significant risk of fracture or obliterate the lumen, allowing for the continued passage of anesthetic liquid.

Adverse effects following dental local anesthesia: a literature review

Local anesthesia is indispensable in dentistry. Worldwide, millions of local anesthetic injections are administered annually, and are generally considered safe invasive procedures. However, adverse effects are possible, of which dentists should be aware of. This scoping review aimed to provide an extensive overview of the reported literature on the adverse effects of dental local anesthesia. The types of papers, what is reported, and how they are reported were reviewed. Additionally, the incidence and duration of adverse effects and factors influencing their occurrence were also reviewed. An electronic search for relevant articles was performed in PubMed and Embase databases from inception to January 2, 2020. The titles and abstracts were independently screened by two reviewers. The analysis was narrative, and no meta-analysis was performed. This study included 78 articles. Ocular and neurological adverse effects, allergies, hematomas, needle breakage, tissue necrosis, blanching, jaw ankylosis, osteomyelitis, and isolated atrial fibrillation have been described. Multiple adverse effects of dental local anesthesia have been reported in the literature. The results were heterogeneous, and detailed descriptions of the related procedures were lacking. Vital information concerning adverse effects, such as the dosage or type of anesthetic solution, or the type of needle used, was frequently missing. Therefore, high-quality research on this topic is needed. Finally, the adverse effects that are rarely encountered in real-world general practice are overrepresented in the literature.

Is theophylline more effective than sumatriptan in the treatment of post-dural puncture headache? A randomized clinical trial

ABSTRACT Objectives: To compare the safety and efficacy of oral theophylline versus oral sumatriptan in the treatment of post-dural puncture headache (PDPH).Background: PDPH is the most frequent complication of procedures associated with a dural puncture for spinal anaesthesia, cerebrospinal fluid (CSF) sampling, or following inadvertent dural puncture during epidural anaesthesia. Since invasive treatments have known complications, pharmacologic management may be preferable.Patients and Methods: This was a prospective, randomized, double-blind, phase four, comparative clinical trial; carried out on 60 patients presented with PDPH at Damanhour Teaching Hospital, El Beheira, Egypt; between February 2020 and May 2021. Patients were randomly allocated into two equal groups; group T, which received oral theophylline, and group S, which received oral sumatriptan.Results: There were no statistically significant differences between both groups as regards: demographic data, American Society of Anesthesiologists (ASA) physical status, type of operation, type, and size of the spinal needle. PDPH duration and length of hospital stay were significantly shorter in group T than in group S. Numerical pain rating scale (NPRS) scores were significantly lower in group T than in group S. Palpitation, dizziness, gastric irritation, and nausea/vomiting occurred in both groups with no statistically significant differences. No patient in either group needed an epidural blood patch.Conclusion: Oral theophylline is more effective and safer than oral sumatriptan in the treatment of PDPH. It lowered NPRS scores, shortened the duration of PDPH, and length of hospital stay, and was associated with minimal side effects.

The Role of Mathematical Literacy in the Artistic Design of Floral Jelly Cakes

Although artistic and delicate shapes can be made in creative design teaching on site, standard sizes should be specified for some necessary types of objects, in order to provide guidance for students and teach them techniques. It can be found that many technical tutors fail to teach students the quantitative characteristics of mathematics in making a jelly flower. As a result, it is difficult for novices to select accurate types of flower needles, and to know that different flower buds and petals should be created by injecting liquid concoctions with different and precise angles, depths, and sizes. Petals in different lengths should also be designed for tutors to teach students techniques with precise information. As no flower needles or concoction ratios similar to those mentioned above are provided in films, teaching files, or books, it is necessary to teach the flower piping with different angles, lengths, depths. This study aims to provide students with accurate numbers and angles that follow the technical steps and methods to design and make delicate floral jelly cakes, as well as the use of various quantitative characteristics with explanations through graphs and text. The results of this study provide novices with the required techniques to make these cakes. This study can help tutors learn from examples and engage in teaching suitable and scientific techniques, and its result can be taken as the basis for the development of a professional teaching course in making floral jelly cakes.

THE EFFECTS OF PATIENT POSITION ON EARLY COMPLICATIONS OF SPINAL ANESTHESIA INDUCTION IN ARTHROSCOPIC KNEE SURGERY.

SUMMARYSpinal anesthesia is widely used in different patient positions to create efficient and rapid anesthesia induction in surgical interventions. Early and late complications of spinal anesthesia may vary according to the type of needle, drug dose and concentration, patient weight and height, puncture technique, and position of the patient. This study aimed to prospectively compare early complications of spinal anesthesia between patients in sitting and lateral decubitus positions with motor block onset time and sensory block time to T10 level. Spinal anesthesia was performed in 100 ASA I-II patients aged 18-65 years (group S=48; and group L=52) undergoing arthroscopic knee surgery. Hemodynamic data, early complications, sensory and motor block onset times were recorded. Systolic, diastolic and mean arterial pressures were significantly lower in lateral decubitus position as compared to sitting position after spinal anesthesia induction. Arterial blood pressure values decreased significantly in lateral decubitus position as compared with sitting position. Motor block onset time and sensory block onset time were shorter in lateral decubitus position than in sitting position. Accordingly, sitting position could be suggested during induction of spinal anesthesia because it was associated with less pronounced decrease in blood pressures.

Acupuncture Intervention Protocol: Consensus Process for a Pragmatic Randomized Controlled Trial of Acupuncture for Management of Chronic Low Back Pain in Older Adults: An NIH HEAL Initiative Funded Project.

ObjectiveThe aim of this article is to describe the consensus process used to develop an acupuncture intervention protocol for an NIH-funded pragmatic randomized controlled trial (PRCT) of acupuncture for the management of chronic low back (cLBP) in older adults (BackInAction).BackgroundCLBP is among leading causes of disability worldwide: almost 33% of US adults 65 and older experience LBP. Acupuncture is effective for cLBP but there is no specific data on older adults. The National Institutes for Health (NIH) funded a PRCT of acupuncture needling for this population. An essential trial milestone was development of a consensus intervention protocol.MethodsAn Acupuncture Advisory Panel (AAP) was formed with nine members: two physician-acupuncturists, six licensed acupuncturists representing diverse work backgrounds, and an acupuncture researcher. We used a modified Delphi process that included provision of acupuncture trial data, survey data describing how each expert treats cLBP, three conference calls, and between-call email discussion.ResultsLively and professional discussions led to a consensus intervention protocol for the BackInAction trial that included steps/staging of care, recommendations for parameters of care session length, number of needle insertion sites, insertion depths, needle retention times, recommended types of needles, both local and distal areas of the body to be treated, acupuncture point options, auricular point options, self-care options, and minimum number of sessions considered ideal.ConclusionUsing a modified Delphi process, an expert AAP created a consensus intervention protocol for the PRCT of acupuncture needling for cLBP in patients 65 and older.

Characteristics of Non-nano Needle Type Zinc Oxide and Its Application in Sunscreen Cosmetics

Characteristics of Non-nano Needle Type Zinc Oxide and Its Application in Sunscreen Cosmetics

An approach to the growth of calcium manganese hydrogen phosphate (CaMnHPO4) single crystals (in-vitro study-I) in water glass medium at room temperature and its characterization studies

Abstract Calcium manganese hydrogen phosphate (CaMnHPO4) crystals are quite repeatedly present in urinary calculi. The crystals are grown by the single diffusion growth technique in sodium meta silicate gel. The grown crystals are in the form of platelet, single and poly crystals and large needle type morphologies are also observed. The grown crystals are analyzed by FTIR and TGA/DTA. A well grown selected crystals are analyzed by SEM and etching to identify its growth morphologies. This is in good agreement with earlier reported literature.

Increased Needle Visibility in Ultrasound-Guided Percutaneous Liver Biopsy by an Echogenic Sheath: A Proof of Concept Study in a Human Cadaver

PurposeFor the safety and success of an ultrasound-guided percutaneous liver biopsy, needle visibility and needle tip identification are critical. The aim of this pilot study was to evaluate the influence of an innovative echogenic sheath placed over a standard biopsy needle on needle visibility in ultrasound imaging.Materials and methodsUltrasound videos of three sheaths with different coating characteristics (echogenicity) and one conventional liver biopsy needle were recorded at two angles (30° and 60°) and two depths (5 and 10 cm) in a human cadaver. The videos were blinded for needle type and presented to five independent radiologists who used Likert-scale scoring to rank each video for six characteristics on needle visibility. In addition, a phantom model was used to acquire standardized images for quantitative evaluation of the ultrasound visibility. Comparative statistical analysis consisted of a one-way ANOVA.ResultsThe three prototype sheaths were ranked higher than the control needle at 60° with 5 cm depth, with an equal performance for the other conditions. The radiologists expressed more confidence in taking a biopsy with the echogenic sheaths than with the control needle, with 1 Likert score difference at 30°. Contrast analysis in the phantom model showed a statistically significant effect of a sheath (p = 0.004) on echogenic intensity.ConclusionThis pilot study suggests that the use of an echogenic sheath may increase needle visibility, particularly for trajectories requiring steeper insertion angles. To investigate the superiority of the echogenic sheath over conventional needles, a clinical study is necessary.

Characteristics of a Mechanical Circuit Breaker with New Induction Needle and Magnets Type to Extinguish a DC Arc

Permanent magnets are currently attracting much attention as they are used in various application devices requiring high magnetic force. There are many types of permanent magnets with different properties, and they need to be tested for suitability for the applied devices. Sintered NdFeB permanent magnets have a large coercive force and are used in a variety of application systems. In particular, they are being used in circuit breakers to protect the DC transmission and distribution systems, which are actively being developed now. DC maintains a constant current value because it does not have a frequency. Thus, it is very difficult to interrupt large transient currents when an accident occurs. Therefore, a new type of induction needle and a permanent magnet near a mechanical break contact were combined. This induction needle is serially connected to a ground wire. This new breaking technique extinguishes the arch that occurs between the contacts by pushing it to the ground using an induction needle. The permanent magnet applied here, however, must be strong against a high-temperature arc that occurs quickly, and must generate a high magnetic force. Simulations were conducted with FEM (finite element method) and TDM (time difference method) using Maxwell, an electronic analysis program, and a permanent magnet that is appropriate for use as a component of a circuit breaker was selected. Consequently, it was found that the use conditions of permanent magnets varied by the arch generated in the mechanical circuit breaker.

Impact of road salting on Scots pine (Pinus sylvestris) and Norway spruce (Picea abies)

Evaluation of the impact of transport on the surrounding environment requires an ecosystem approach: to analyze components that provide information about the distribution of concentrations of the monitored contaminants and to allow an estimate of the dynamics of movement of these substances in the environment. Trees are used for biomonitoring for wide range of contaminants, coming not only from air pollution from industry or transport but also from winter chemical road maintenance. The research paper presents the determination of sodium and chloride ions content in assimilative organs of conifers and evaluates the influence of the contamination potential on these ions contents in needles of the Scots pine (Pinus sylvestris) and Norway spruce (Picea abies). Scots pine is studied a useful bioindicator for different tip of trace elements, but in the case of influence of winter maintenance, there is not so deep focusing as in the case of spruce. We have used this species of conifers for their usual occurrence. To assess the differences between sensitivity of salinity of different type of needles, the results of analysis of first- and second-year needles of Scots pine needles and samples of the Norway spruce were compared. The study was conducted in two different areas (for Scots pine and Norway spruce) in the Czech Republic. Samples of soils were collected near each tree of interest. The results of ions concentrations (Na, Cl) were evaluated depending on two factors: the distance from the road and the age of the needles. For evaluation of the impact of transport on the surrounding environment also the concentrations of wide range of elements were measured. The study confirmed a higher sensitivity of Norway spruce to salinity than in Scots pine. Given the confirmed increased sensitivity of spruce stands to the effects of winter road maintenance, spruce is not an appropriate tree species for the immediate vicinity of road infrastructure. Increased NaCl accumulation in the assimilation organs of the conifer trees near the road was confirmed and scales with concentrations were established to assess the degree of contamination.

The bleeding risk after endoscopic ultrasound-guided puncture of pancreatic masses

Background Although EUS-fine-needle aspiration (FNA) is considered to be safe, there are limited studies on adverse events of fine-needle biopsy (FNB). Aim To compare the bleeding rate of EUS-FNA and EUS-FNB of solid and cystic pancreatic masses. Methods Our retrospective study included EUS-FNA/FNB of solid and cystic pancreatic masses performed between 02/2017–03/2019 in Klinikum Klagenfurt and 11/2018–03/2019 in University Hospital St. Pölten, Austria. Minor bleeding was defined as an event with a duration of more than 1 min, no need for intervention, large coagulum on the puncture site, or decrease in hemoglobin ≥1.5 g/dL (but <2 g/dL). Major bleeding was defined as a reduction in hemoglobin level ≥2 g/dL, need for red cell transfusions, or interventional hemostasis. Results About 202 patients were biopsied in that period (141 solid, 61cystic pancreatic masses). FNA needle was used in 54.6% of cases with solid pancreatic masses and 73.7% of cysts. Bleeding with hemodynamic instability was not observed in our cohort. In pancreatic cysts, minor bleeding was observed in 8.2% of cases and was associated with the use of FNB needles and lower platelet count. In solid tumors, one major bleeding (0.7%) from a duodenal vessel occurred and was immediately treated with hemoclip. In this group, minor bleeding was observed in 15.6% of cases. Overall, the bleeding rate correlates with the use of FNB needles. Conclusion Use of EUS-FNB needles increases the rate of minor bleeding for both solid and cystic pancreatic tumors, while major bleeding is a rare occurrence, irrespective of the needle type.