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  1. Article: Predictors of Revascularization in Patients with Unstable Angina.

    Budzianowski, Jan / Faron, Wojciech / Rzeźniczak, Janusz / Słomczyński, Marek / Hiczkiewicz, Dariusz / Olejniczak, Jacek / Hiczkiewicz, Jarosław / Burchardt, Paweł

    Journal of clinical medicine

    2024  Volume 13, Issue 4

    Abstract: Background: The factors that determine the necessity of coronary artery revascularization in patients with unstable angina (UA) have been supported by limited data. Therefore, this study aimed to identify the predictors of revascularization in patients ... ...

    Abstract Background: The factors that determine the necessity of coronary artery revascularization in patients with unstable angina (UA) have been supported by limited data. Therefore, this study aimed to identify the predictors of revascularization in patients with UA.
    Methods: The study included the recorded data of 3668 patients with UA who underwent cardiac catheterization (age 66 ± 9.2, men 70%); 2615 of them (71%) underwent revascularization (percutaneous transluminal coronary angioplasty (PTCA), coronary artery bypass graft (CABG), or hybrid revascularization. The remaining 1053 patients (29%) had no significant coronary stenosis and were regarded as controls. Multivariable logistic regression analysis was performed to separate the predictors of revascularization.
    Results: It was found that severe angina (OR 2.7, 95%CI 1.9-3.7), male gender (OR 1.4, 95%CI 1.1-1.7), and hyperlipidemia were the predictors of revascularization. It was also noted that intraventricular conduction disorders including left and right bundle branch blocks and a history of previous revascularization and myocardial infarction were associated with lower odds of revascularization.
    Conclusion: Overall, however, the predictive value of the studied factors proved to be poor and may still point to the multifactorial nature of significant coronary artery stenosis and the need for revascularization in patients with UA.
    Language English
    Publishing date 2024-02-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm13041096
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Enrichment of phenols from water with in-situ derivatization by in-tube solid phase microextraction-solvent desorption prior to off-line gas chromatographic determination with large-volume injection.

    Olejniczak, Jacek / Staniewski, Jacek

    Analytica chimica acta

    2007  Volume 588, Issue 1, Page(s) 64–72

    Abstract: Sorption of phenols from water into the stationary phase of open tubular columns (named in-tube solid phase microextraction) as an enrichment method for gas chromatographic (GC) analysis of aqueous samples was studied. The effect of operating conditions ( ...

    Abstract Sorption of phenols from water into the stationary phase of open tubular columns (named in-tube solid phase microextraction) as an enrichment method for gas chromatographic (GC) analysis of aqueous samples was studied. The effect of operating conditions (stationary phase polarity, swelling of the stationary phase by solvents, number of sampling cycles, salting-out effect, sampling velocity, flow rate of desorption solvent) on the process efficiency was evaluated. Real water samples were also used in this study. Swelling of the stationary phase by organic solvent enables the volume of the stationary phase to be increased and its properties to be modified. The use of toluene or tetrachloromethane for the purpose results in high extraction efficiencies for most phenols. The results demonstrated a direct relationship between the extracted amount of phenols and its initial concentration in the sample. The limit of detection in off-line analyses applying large-volume injection was lower than 0.04 microg L(-1). These results of the use of in-tube solid phase microextraction with solvent desorption as a non-exhaustive (equilibrium sorptive) enrichment method show a great potential for on-line chromatographic analysis of micropollutants in real water samples.
    MeSH term(s) Chemistry Techniques, Analytical/methods ; Chromatography ; Chromatography, Gas/methods ; Hexanes/chemistry ; Phenols/analysis ; Reproducibility of Results ; Salts/pharmacology ; Sensitivity and Specificity ; Solid Phase Microextraction/methods ; Solvents/analysis ; Solvents/chemistry ; Time Factors ; Toluene/chemistry ; Water/chemistry ; Water Pollutants, Chemical/analysis
    Chemical Substances Hexanes ; Phenols ; Salts ; Solvents ; Water Pollutants, Chemical ; Water (059QF0KO0R) ; Toluene (3FPU23BG52)
    Language English
    Publishing date 2007-04-04
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1483436-4
    ISSN 1873-4324 ; 0003-2670
    ISSN (online) 1873-4324
    ISSN 0003-2670
    DOI 10.1016/j.aca.2007.01.065
    Database MEDical Literature Analysis and Retrieval System OnLINE

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