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    Wyświetlanie 1-5 z 5
    Tytuł:
    Colorectal surgery in elderly population
    Autorzy:
    Zawadzki, Marek
    Krzystek-Korpacka, Małgorzata
    Rząca, Marek
    Czarnecki, Roman
    Obuszko, Zbigniew
    Witkiewicz, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/1392435.pdf
    Data publikacji:
    2018
    Wydawca:
    Index Copernicus International
    Tematy:
    elderly
    colorectal surgery
    colorectal cancer
    Opis:
    Introduction: With the rising number of elderly patients and increasing incidence of colorectal cancer, management of geriatric patients has become the forefront of colorectal surgery. Objectives: This study aimed to investigate the short-term surgical outcomes that follow colorectal resection in elderly patients. Materials and methods: A total of 464 patients who underwent surgical resection for colorectal tumor between 2013 and 2017 were included. The patients were divided into a group of the elderly (≥75 years) and the young (<75 years). Clinicopathological data of the patients were reviewed retrospectively. Results: The elderly group constituted 30% of the study population. A greater number of patients in the elderly group underwent Hartmann’s procedure (p = 0.02) and right hemicolectomy (p = 0.029), and younger patients more often received low anterior resection (p = 0.027). The duration of the surgical procedure was shorter in the elderly group (p < 0.01) but they stayed in the hospital one day longer (p = 0.023). Postoperative complications and mortality tended to be higher in seniors (p = 0.088). The younger patients showed a tendency towards a higher rate of distant metastases (p = 0.053). Seniors received fewer preoperative chemoradiation in comparison to the young group (p = 0.014). Conclusion: Older persons constitute one-third of patients treated electively in colorectal departments. Colorectal surgery in geriatric patients is associated with a prolonged hospital stay and a higher potential for complications and mortality.
    Źródło:
    Polish Journal of Surgery; 2018, 90, 4; 29-34
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydraulic Calculations of a Slotted Separator Using the SSIIM Program
    Autorzy:
    Zawadzki, Paweł
    Walczak, Zbigniew
    Nieć, Jakub
    Hämmerling, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2174926.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    water reservoir
    sediment removal
    slotted separator
    SSIIM
    Opis:
    Analysis of the results of the hydraulic calculations of a slotted separator allowed for changes in the separator design, considering the reduction of flow turbulence, ensuring the continuity of water flow and sediments, and the optimal location of the slots. The separator is a crucial element of the installation for the hydromechanical removal of sediments from the bottom of a water reservoir. Tests were carried out on the physical and mathematical models. Hydraulic calculations and numerical simulations were carried out using the SSIIM (Simulation of sediment movements in water intakes with multiblock option) program. The program enables three-dimensional analysis of flows and transport of sediments in rivers and canals by solving the Navier-Stokes equation and the turbulent model k-Ɛ. In addition, several numerical experiments of the separator work were carried out for various design solutions regarding the geometry of the inlet and outlet channels and their connection with the chambers and slots system. Finally, the numerical simulations and conducted research on a physical model allowed us to develop an optimal solution.
    Źródło:
    Rocznik Ochrona Środowiska; 2022, 24; 172--189
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Risk factors in reoperations in colorectal surgery
    Autorzy:
    Zawadzki, Marek
    Krzystek-Korpacka, Małgorzata
    Rząca, Marek
    Czarnecki, Roman
    Obuszko, Zbigniew
    Sitarska, Magdalena
    Witkiewicz, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/1392140.pdf
    Data publikacji:
    2019
    Wydawca:
    Index Copernicus International
    Tematy:
    colorectal cancer
    colorectal surgery
    complication
    reoperation
    Opis:
    Background: Reoperations in colorectal surgery are usually a consequence of major surgical complications. Recently, the rate of reoperation has been proposed as a marker of surgical performance. Yet, the incidence of re-intervention varies significantly in literature, ranging from 5.2% to 13%. Therefore, in this study we investigated 30-day reoperation rates and made an attempt to identify risk factors of re-intervention following colorectal resection at our institution. Methods: This is a retrospective study of patients who had undergone colorectal resection at a single institution from 2013 to 2017. Univariate and multivariate analysis of predicting factors were performed. Results: Out of 464 patients included, 51 required reoperations (11%). The most common causes of reoperations were anastomotic leakage, postoperative bleeding, and wound dehiscence. In univariate analysis the age of the patient and location of the tumor were related to an increased rate of reoperation. In multivariate analysis patients older than 75 (OR = 2.1; 95%CI = 1.1–3.9) and tumors sited in the rectum (OR = 2.66; 95%CI = 1.4–5) were associated with an increased risk of re-intervention. Patients who required postoperative re-intervention stayed in hospital longer (14 vs. 6 days, P < 0.0001) and had higher mortality (9.8% vs. 1.2%, P = 0.002). Conclusions: Our study shows that reoperation rates that follow colorectal surgery are frequently undervalued. In our series, 11% of patients required an unplanned return to the operative room. Patient’s age and rectal tumors were the two independent factors that affect the rate of reoperation. Novel aspect: Data concerning reoperation rates in colorectal surgery is varying and most reports have shown the incidence of re-intervention to be as low as 5–7%. Our study demonstrates that reoperations after curative surgery for colorectal cancer are more frequent and may occur in over a tenth of total patients operated on.
    Źródło:
    Polish Journal of Surgery; 2019, 91, 4; 13-18
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of physical exercise on the motility of hands in patients operated because of Dupuytrens contracture in own material
    Autorzy:
    Deskur, Zbigniew
    Deskur, Anna
    Zawadzki, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/1055191.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    Dupuytren's contracture
    exercise
    surgery
    Opis:
    The purpose of this study was to evaluate the effect of physical exercise on limited locomotion in the hands of patients who underwent surgery to correct Dupuytren's contracture. We studied the hands of 84 patients with Dupuytren's contracture aged from 30 to 84 years. In all patients, the contracture was removed by performing a partial fasciectomy. Physical exercises were carried out a week prior to surgery and during the postoperative period. Patients were divided into group I, in which the exercise was carried out under the supervision of the authors of this study and group II, in which exercises were performed sporadically and without professional supervision. Measurements were performed on all patients one week before surgery (A), 1 week after surgery (B) and 6 weeks after (C). The range of movement of fingers was measured using a goniometer. The average total loss of finger extension was evaluated, taking due account of the extension loss in the MCP, PIP and DIP joints of all fingers of the treated hand. Rehabilitation treatment included active and passive exercises; in more severe cases the treatment of choice was massage and special equipment to help bear flexion contracture. Test results were statistically analyzed. In all patients, there was an increase in mobility of the fingers. Patients taking part in physical exercise had significantly greater range of finger movement.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2014, 6, 2; 77-83
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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