Correction: Exploration of surgical blood pressure management and expected motor recovery in individuals with traumatic spinal cord injury.

An amendment to this paper has been published and can be accessed via a link at the top of the paper

Exploration of surgical blood pressure management and expected motor recovery in individuals with traumatic spinal cord injury.

Study designRetrospective analysis.ObjectiveTo assess the impact of mean arterial blood pressure (MAP) during surgical intervention for spinal cord injury (SCI) on motor recovery.SettingLevel-one Trauma Hospital and Acute Rehabilitation Hospital in San Jose, CA, USA.MethodsTwenty-five individuals with traumatic SCI who received surgical and acute rehabilitation care at a level-one trauma center were included in this study. The Surgical Information System captured intraoperative MAPs on a minute-by-minute basis and exposure was quantified at sequential thresholds from 50 to 104 mmHg. Change in International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) motor score was calculated based on physiatry evaluations at the earliest postoperative time and at discharge from acute rehabilitation. Linear regression models were used to estimate the rate of recovery across the entire MAP range.ResultsAn exploratory analysis revealed that increased time within an intraoperative MAP range (70-94 mmHg) was associated with ISNCSCI motor score improvement. A significant regression equation was found for the MAP range 70-94 mmHg (F[1, 23] = 5.07, r2 = 0.181, p = 0.034). ISNCSCI motor scores increased 0.039 for each minute of exposure to the MAP range 70-94 mmHg during the operative procedure; this represents a significant correlation between intraoperative time with MAP 70-94 and subsequent motor recovery. Blood pressure exposures above or below this range did not display a positive association with motor recovery.ConclusionsHypertension as well as hypotension during surgery may impact the trajectory of recovery in individuals with SCI, and there may be a direct relationship between intraoperative MAP and motor recovery

Correction: Exploration of surgical blood pressure management and expected motor recovery in individuals with traumatic spinal cord injury

A correction to this paper has been published and can be accessed via a link at the top of the paper

Correction: Exploration of surgical blood pressure management and expected motor recovery in individuals with traumatic spinal cord injury.

A correction to this paper has been published and can be accessed via a link at the top of the paper

Espectro Vibracional no Infravermelho Próximo dos Polímeros Poliestireno, Poli(Metacrilato de Metila) e Policarbonato Near-Infrared Spectra of Polystyrene, Poly(Methyl Methacrylate) and Polycarbonate

Os espectros no infravermelho próximo (NIR) dos polímeros amorfos poliestireno (PS), poli(metacrilato de metila) (PMMA) e policarbonato (PC) foram estudados. A tentativa de atribuição das bandas harmônicas e de combinação dos modos vibracionais do PS, PMMA e PC foi realizada baseando-se na teoria de modos locais e pelo uso do método matemático de ajuste de curvas. A correção de anarmonicidade e freqüência mecânica foi determinada em um gráfico de Birge-Sponer. Uma correção de anarmonicidade de 57 e 58 cm-1 foi obtida para os modos de estiramento dos grupos CH2 e CH do PS; 59 e 9 cm-1 para os modos de estiramento dos grupos CH3 e CO do PMMA e 53, 59 e 10 cm-1 para os modos de estiramento dos grupos CH, CH3 e CO do PC, respectivamente.<br>The near-infrared (NIR) spectra of the amorphous polymers polystyrene (PS), poly(methyl methacrylate) (PMMA), and polycarbonate (PC) have been studied. The tentative assignment of the overtone and combination frequencies is made using the curve fitting calculations and the local mode theory. Anharmonicity correction and mechanical frequency were determined from a Birge-Sponer plot. A tentative assignment of stretch overtone frequency of CH2 and CH functional groups of PS; CH3 and CO functional groups of PMMA and CH, CH3 and CO functional groups of PC has been made. An anharmonicity correction of 57 and 58 cm-1 was obtained for CH2 and CH stretch modes of PS; 59 and 9 cm-1 for CH3 and CO stretch modes of PMMA and 53, 59 and 10 cm-1 for CH, CH3 and CO stretch modes of PC, respectively