Accession Site Does Not Influence the Risk of Stroke after Diagnostic Coronary Angiography or Intervention: Results from a Large Prospective Registry

INTRODUCTION: Periprocedural stroke represents a rare but serious complication of cardiac catheterization. Pooled data from randomized trials evaluating the risk of stroke following cardiac catheterization via transradial versus transfemoral access showed no difference. On the other hand, a significant difference in stroke rates favoring transradial access was found in a recent meta-analysis of observational studies. Our aim was to determine if there is a difference in stroke risk after transradial versus transfemoral catheterization within a contemporary real-world registry. METHODS: Data from 14,139 patients included in a single-center prospective registry between 2009 and 2016 were used to determine the odds of periprocedural transient ischemic attack (TIA) and stroke for radial versus femoral catheterization via multivariate logistic regression with Firth's correction. RESULTS: A total of 10,931 patients underwent transradial and 3,208 underwent transfemoral catheterization. Periprocedural TIA/stroke occurred in 41 (0.29%) patients. Age was the only significant predictor of TIA/stroke in multivariate analysis, with each additional year representing an odds ratio (OR) = 1.09 (CI 1.05-1.13, p < 0.000). The choice of accession site had no impact on the risk of periprocedural TIA/stroke (OR = 0.81; CI 0.38-1.72, p = 0.577). CONCLUSION: Observational data from a large prospective registry indicate that accession site has no influence on the risk of periprocedural TIA/stroke after cardiac catheterization

A Method Based on a Nonlinear Generalized Heisenberg Algebra to Study the Molecular Vibrational Spectrum

We propose a method, based on a Generalized Heisenberg Algebra (GHA), to reproduce the anharmonic spectrum of diatomic molecules. The theoretical spectrum generated by GHA allows us to fit the experimental data and to obtain the dissociation energy for the carbon monoxide molecule. Our outcomes are more accurate than the standard models used to study molecular vibrations, namely the Morse and the $q$-oscillator models and comparable to the perturbed Morse model proposed by Huffaker \cite{hf}, for the first experimental levels. The dissociation energy obtained here is more accurate than all previous models

HIGH RESOLUTION STUDY OF THE ν8,ν10\nu_{8}, \nu_{10}, and ν11\nu_{11} BANDS OF CYCLOPROPANE-D6D_{6}

Author Institution: Department of Physics, The Pennsylvania State University; Laboratoire de Physique Mol\'{e}culaire et Applications CNRS, Universit\'{e} Pierre et Marie curieThe perpendicular infrared bands of the $E^{\prime}$ vibrations of $C_{3}-B_{5}$ were measured on a large FT spectrometer at resolution approaching the Doppler limit. The unperturbed $\nu_{11}$ band provided the most extensive data yielding 867 combination differences for a determination of accurate ground state constants $B_{0}$ and $D_{J}$. These were combined with highly accurate values of $C_{0}-B_{0}$ and $D_{JK}$ recently determined by Baudar {et al.} from an FTMW measurement of the rotational spectrum: $B_{0} = 0.4613514(4), C_{0} = 0.3182425(4), D^{0}_{J}= 3.7868(18) \times 10^{-7}, D^{0}_{JK} = -3.7395(7) \times 10^{-7}$ (all $in cm^{-1}$ units). The $\nu_{10}$ band was found to have an appearance of a parallel band due to an accidental match of the values of $(C \zeta)_{10}$ and $B^{\prime}- C^{\prime}$. The $\nu_{9}$ band exhibits a perturbation in its P-branches due to Fermi resonance with $2 \nu^{2}{14}$. Spectroscopic constants for the upper states $\nu_{1}1, \nu_{1}0, \nu_{9}$, and ${^{2}}\nu_{2}^{14}$, obtained from a detailed rotational analysis of the three bands will be reported

SPECTROSCOPICALLY INACTIVE STATES FROM DIFFERENCE TRANSITIONS: THE ν17−ν20\nu_{17} - \nu_{20} BAND OF BENZENE

Author Institution: Department of Physics, The Pennsylvania State University; Herzberg Institute of Astrophysics, National Research CouncilSpectroscopic constants for the infrared- and Raman-inactive $E_{2u}$ state $\nu_{20}$ of benzene have been obtained from an analysis of a high resolution recording of the $\nu_{17}- \nu_{20}$ difference band at $779.643 cm^{-1}$. Over 3000 lines of the band were measured on a Fourier transform spectrometer and subsequently deconvolved to an effective linewidth of $\sim 0.0012 cm^{-1}$. Both $\nu_{17}$ and $\nu_{20}$ are strongly affected by rotational f-resonance and doubling. Even for such states involved in resonances, combination relations are found to be useful for breaking up the correlations between the upper and lower state constants in determining the coefficients of the J-dependent terms $(\Delta B, q , \eta_{J}, \Delta D_{J})$ if the interactions are explicitly taken into account. The spectroscopic constants obtained for the two states reproduce the observed line positions with an over-all standard deviation of $2.2 \times 10^{-4} cm^{-1}$