Abstract Background Pulmonary hypertension (PH) is a common finding among patients with heart failure and preserved ejection fraction (HFpEF) and contributes to develop right ventricular systolic ...dysfunction (RVSD). Aims We evaluated the diagnostic accuracy of Flowers and Horan electrocardiographic criteria to detect significant right ventricular pressure overload. Methods 123 patients were prospectively included. We used the Flowers and Horan (FH) ECG criteria to define RV enlargement (score > 10). Echocardiographic measurements were performed blinded to the electrocardiographic results. Results Severe PH was found in 51.5%. Seventeen patients (16.5%) had a FH score > 10 points. This was associated to RVSD (RR 2.66; 1.51-4.67 CI 95%, p = 0.002), with 90.5% specificity and 34.4% sensitivity and to severe PH (RR 1.70; 1.16-2.50 CI 95%, p = 0.028) with 91.9% specificity and 27.5% sensitivity. Conclusions The ECG is a useful tool to classify HFpEF patients with echocardiographic signs of right ventricular pressure overload, in the absence of RBBB.
Massive left atrium thrombus Santos, Paula Martínez; López, Elena Batlle; Barrio, Elena España ...
The International Journal of Cardiovascular Imaging,
2014/1, Letnik:
30, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The image shows a left atrium completely occupied by a giant non-homogeneous, irregularly-surfaced mass, obstructing the disc motion, mimicking severe mitral prosthetic stenosis.
Permanent pacemaker implantation is required in a large number of transplantation patients principally because of sinus node dysfunction of the donor atrium. The most suitable mode of pacing in these ...cases is still subject to controversy. We describe one case of a single lead system of VDD stimulation and sensing of the recipient atrial signal in a 32‐year‐old patient with posttransplant symptomatic sinus node dysfunction. Physiological adaptation of rate was achieved with recovery of normal receptor sinus node function. (PACE 1996; 19:1522–1523).
Se ha analizado la evolución de la estructura del paisaje español mediante un análisis de la dependencia de los patrones del paisaje respecto del medioambiente. La hipótesis principal es que la ...dependencia entre la estructura del paisaje y los factores ambientales está disminuyendo con el tiempo. Los datos de composición y configuración de paisaje fueron tomados mediante interpretación de fotografías aéreas tomadas en los años 1956, 1984 y 1998 en 206 parcelas de 4 x 4 km cuadrados. Se han tenido en cuenta variables geográficas junto con las variables puramente ambientales. Se han utilizado modelos lineales generalizados de medidas repetidas para determinar la importancia de los efectos ambientales con respecto a los geográficos en los patrones de paisaje. Las variables ambientales utilizadas para analizar los índices estructurales del paisaje fueron: aridez, litología y topografía. Existe una mayor dependencia ambiental en la composición que en la configuración. Las variables ambientales tuvieron un mayor efecto sobre la estructura del paisaje que las geográficas. Entre aquellas, la aridez climática y la topografía influyeron más que la litología. La composición se mostró en general estable a lo largo del periodo de estudio con algunas excepciones. Sin embargo, se observó una fragmentación significativa que indica la necesidad de analizar los índices de configuración para detectar los cambios de paisaje.
The analysis of the dependence of landscape patterns on environment was carried out in order to investigate the landscape structure evolution of Spain. The underlying concept was that the dependence between landscape spatial structure and environmental factors could be gradually decreasing over time. Land cover data were recorded from aerial photo interpretation of 206 4 x 4 square km samples from three different years: 1956, 1984 and 1998. Geographical variables were taken into consideration together with the purely environmental ones. General linear models of repeated measures were then used to segregate environmental from geographical effects on the pattern of the land cover patches of the samples. Aridity, lithology and topography were the environmental factors used to analyse structural indices of landscape. Landscape composition has a higher dependence on environment than configuration. Environmental variables showed higher correlations with landscape composition and configuration than geographical variables. Among them, overall the climatic aridity and topography significantly accounted for more variation than did lithology. There was a high degree of stability in land cover composition over time, with some significant exceptions. Nevertheless, the registered increase of fragmentation over time has demonstrated that configuration measures are needed to fully assess landscape change.
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