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Pedro Tiago,Pereira Pedro,Costa Ana Sofia,Almeida Fábio,Loureiro Maria Luísa,Alfaiate Teresa,Gonçalves Abílio 대한신경집중치료학회 2022 대한신경집중치료학회지 Vol.15 No.1
Background: Blood pressure variability (BPV) is a predictor of short- and long-term disability in patients with acute ischemic stroke (AIS). Its effect on more immediate functional outcomes has been seldom studied, and the results are inconsistent. We aimed to determine the role of BPV during the first 5 days of hospitalization in functional status at the time of discharge of patients with AIS.Methods: We enrolled 134 patients diagnosed with AIS and BPV using standard deviation and coefficient of variation (CV %). These were associated with the dichotomized modified Rankin Scale at discharge using logistic regression. Results: Patients with unfavorable outcomes were significantly older (P=0.014), had a lower body mass index (P=0.001), were less likely to present with dyslipidemia (P=0.001), had lower serum triglyceride levels (P=0.012), had a longer hospitalization period (P<0.001), and had a higher mean National Institutes of Health Stroke Scale score at admission (P<0.001). After adjusting for multiple confounders, the CV % of systolic blood pressure (SBP) in the first 120 hours after admission had a significant effect on functional disability at discharge. Conclusion: Variability in SBP in the first 5 days of hospitalization had a deleterious effect on the functional outcomes at discharge of patients with AIS. The role of diabolic blood pressure variability seems to be significant only in the first 24 hours of admission; however, further research is required.
Dias Pedro de Souza,Kato Augusto Shoji,Bueno Carlos Eduardo da Silveira,Vivan Rodrigo Ricci,Duarte Marco Antonio Hungaro,Calefi Pedro Henrique Souza,Pelegrine Rina Andréa 대한치과보존학회 2023 Restorative Dentistry & Endodontics Vol.48 No.1
Objectives This study aimed to compare the torsional and cyclic fatigue resistance of ProGlider (PG), WaveOne Gold Glider (WGG), and TruNatomy Glider (TNG). Materials and Methods A total of 15 instruments of each glide path system (n = 15) were used for each test. A custom-made device simulating an angle of 90° and a radius of 5 millimeters was used to assess cyclic fatigue resistance, with calculation of number of cycles to failure. Torsional fatigue resistance was assessed by maximum torque and angle of rotation. Fractured instruments were examined by scanning electron microscopy (SEM). Data were analyzed with Shapiro-Wilk and Kruskal-Wallis tests, and the significance level was set at 5%. Results The WGG group showed greater cyclic fatigue resistance than the PG and TNG groups (p < 0.05). In the torsional fatigue test, the TNG group showed a higher angle of rotation, followed by the PG and WGG groups (p < 0.05). The TNG group was superior to the PG group in torsional resistance (p < 0.05). SEM analysis revealed ductile morphology, typical of the 2 fracture modes: cyclic fatigue and torsional fatigue. Conclusions Reciprocating WGG instruments showed greater cyclic fatigue resistance, while TNG instruments were better in torsional fatigue resistance. The significance of these findings lies in the identification of the instruments’ clinical applicability to guide the choice of the most appropriate instrument and enable the clinician to provide a more predictable glide path preparation.
Outcomes of arthroscopic dorsal wrist ganglion excision: a 44-month retrospective comparative study
Amaro Pedro,Cardoso Afonso,Caldeira José,Falcão Pedro,Baptista Carolina 대한정형외과 스포츠의학회 2020 Arthroscopy and Orthopedic Sports Medicine Vol.7 No.2
Background: This study retrospectively compares the clinical outcomes of excision of dorsal cysts of the wrist by open and arthroscopic approaches, considering three variables: recurrence rates, residual pain, and the time required for patients to return to their work activities. Methods: All patients who submitted to open or arthroscopic surgical excision of wrist ganglions between January 2012 and December 2017 were evaluated with a mean follow-up period of 44 months. Preoperative and postoperative pains were evaluated using a visual analogue scale, and functional outcomes were evaluated using the Disabilities of the Arm, Shoulder and Hand (Quick-DASH) questionnaire. Recurrences were confirmed by clinical examination, ultrasound, or magnetic resonance imaging. Results: Our study showed that there are no statistically significant differences between the two surgical techniques regarding the recurrence rate or residual pain. Conclusion: Patients who underwent arthroscopic surgery had a statistically significant early return to work.
Pedro A. Reis,Maria Antónia Salgado,Vitor Vasconcelos 한국해양과학기술원 2017 Ocean science journal Vol.52 No.2
Metal concentrations (Cd, Cr, Cu, Fe, Mn and Zn) were determined in seawaters and soft tissues of Chthamalus montagui from the northwest coast of Portugal during the four seasons of 2011. The main objectives of this work were to assess seasonal and spatial variations of metals in order to detect hot spots of contamination, to establish correlations between metals in coastal seawaters and C. montagui and to calculate metal bioaccumulation factors (BAFs) in each season. Metal concentrations in coastal seawaters ranged within Cd: 1.2–35 ng L-1; Cr: 15–87 ng L-1; Mn: 77–1763 ng L-1; Cu: 126–1819 ng L-1; Fe: 430–4048 ng L-1 and Zn: 2889–16867 ng L-1 and in C. montagui ranged for Cd: 0.39–1.98 mg kg-1; Cr: 0.45–3.13 mg kg-1; Cu: 0.93–5.70 mg kg-1; Mn: 2.2– 20.4 mg kg-1; Fe: 135–707 mg kg-1 and Zn: 119–782 mg kg-1. Significant spatial and seasonal variations were found between: (i) metal concentrations in seawaters and C. montagui tissues; (ii) the distribution of metal concentrations in C. montagui tissues were Fe > Zn > Mn > Cu > Cr > Cd and (iii) C. montagui showed higher bioaccumulation factors for Fe and Cd than for Cu, Mn and Zn in all seasons. Regarding the metal concentrations accumulated in C. montagui tissues during each season of 2011, the ecological quality classifications of the NW coast of Portugal varied from “Class I – Unpolluted” to “Class III – Remarkably Polluted”.
Insecurity and Fear of Crime in Argentina
Pedro Cerruti 한국라틴아메리카학회 2016 라틴아메리카연구 Vol.29 No.4
The emergence of a punitive approach to social insecurity as a response to the new social question produced by neoliberalism has been described as a global trend. Furthermore, it is a trend that characterizes the increasingly polarized and exclusionist post-industrial societies. In this article, I present a study of the development of these transformations in Argentina, in particular the cultural processes involved in the social construction of “insecurity” as a public problem. Two moments in recent Argentine history are considered: first, the hyperinflationary crisis period of 1989-1990 in which insecurity first emerged as a form of representation of the social consequences of the economic crisis; and, second, Carlos Menem’s second presidency between 1995 and 1999, during which the terminal crisis of neoliberalism occurred and insecurity first appeared as one of the main concerns of the public and as a key issue in political disputes, becoming a priority on the government agenda. Focusing specifically on the political and mass media discourses through which crime and violence were thematized as social problems in the public sphere, this paper analyses the articulation of a discursive formation within which social conflicts caused by the crises of the neoliberal reform were formed as criminal problems that required policing and repressive approaches in order to control them.
The use of digital periapical radiographs to study the prevalence of alveolar domes
Pedro Augusto Oliveira Santos Xambre,Claudia Scigliano Valerio,Claudia Assunção e Alves Cardoso,Antônio Luís Neto Custódio,Flávio Ricardo Manzi 대한영상치의학회 2016 Imaging Science in Dentistry Vol.46 No.3
Purpose: In the present study, we coined the term ‘alveolar dome’ and aimed to demonstrate the prevalence of alveolar domes through digital periapical radiographs. Materials and Methods: This study examined 800 digital periapical radiographs in regard to the presence of alveolar domes. The periapical radiographs were acquired by a digital system using a photostimulable phosphor (PSP) plate. The χ2 test, with a significance level of 5%, was used to compare the prevalence of alveolar domes in the maxillary posterior teeth and, considering the same teeth, to verify the difference in the prevalence of dome-shaped phenomena between the roots. Results: The prevalence of alveolar domes present in the first pre-molars was statistically lower as compared to the other maxillary posterior teeth (p<0.05). No statistically significant difference was observed in the prevalence of alveolar domes between the maxillary first and second molars. Considering the maxillary first and second molars, it was observed that the palatal root presented a lower prevalence of alveolar domes when compared to the distobuccal and mesiobuccal roots (p<0.05). Conclusion: The present study coined the term ‘alveolar dome’, referring to the anatomical projection of the root into the floor of the maxillary sinus. The maxillary first and second molars presented a greater prevalence of alveolar domes, especially in the buccal roots, followed by the third molars and second pre-molars. Although the periapical radiograph is a two-dimensional method, it can provide dentists with the auxiliary information necessary to identify alveolar domes, thus improving diagnosis, planning, and treatment.
Support Vector Machine Algorithm in a Bluetooth Low Energy Passenger Detection System
Pedro B.V. Bermudez,Kiwoong Jung,HyeonChyeol Hwang,Jaeho Kwak 대한전자공학회 2019 IEIE Transactions on Smart Processing & Computing Vol.8 No.2
Internet of Things (IoT) and Bluetooth Low Energy (BLE) technologies are drawing attention in the trend to integrate electronic devices and services. One example of an IoT application is a smart fare collection/payment system. Because people carry transportation cards nowadays, it is troublesome to tap the card every time, but making payment automatic by eliminating the tapping operation lets a greater number of passengers take public transportation in a shorter time. The first step toward a smart transportation fare collection system is passenger detection. One way to detect a passenge is by received signal strength indication (RSSI). The basic idea consists of adding BLE transmitters (beacons) to the vehicles and comparing intensity (power) between signals transmitted and received. However, due to multi-path propagation and fading effects, RSSI is not sufficiently accurate to calculate an exact location. Therefore, instead of determining the exact position, it is preferable to only check if the passenger is inside or outside the vehicle. In this support vector machine estimation method, RSSI signals are filtered using a moving average filter. Algorithm estimation efficiency was 92.51% (on average) for one beacon, and close to 100% for five beacons.