28 research outputs found
Gothic Revival Architecture Before Horace Walpole's Strawberry Hill
The Gothic Revival is generally considered to have begun in eighteenth-century Britain with the construction of Horace Walpoleâs villa, Strawberry Hill, Twickenham, in the late 1740s. As this chapter demonstrates, however, Strawberry Hill is in no way the first building, domestic or otherwise, to have recreated, even superficially, some aspect of the form and ornamental style of medieval architecture. Earlier architects who, albeit often combining it with Classicism, worked in the Gothic style include Sir Christopher Wren, Nicholas Hawksmoor, William Kent and Batty Langley, aspects of whose works are explored here. While not an exhaustive survey of pre-1750 Gothic Revival design, the examples considered in this chapter reveal how seventeenth- and eighteenth-century Gothic emerged and evolved over the course of different architectsâ careers, and how, by the time that Walpole came to create his own Gothic âcastleâ, there was already in existence in Britain a sustained Gothic Revivalist tradition
Effects of Renal Sympathetic Denervation on Arterial Stiffness and Central Hemodynamics in Patients With Resistant Hypertension
Objectives This study investigated the effect of catheter-based renal sympathetic denervation (RD) on central hemodynamics in patients with resistant hypertension. Background High central blood pressure (BP) increases cardiovascular events and mortality independently of peripheral BP. The effect of RD on central BP is unclear. Methods A total of 110 patients underwent bilateral RD. Radial artery applanation tonometry and pulse wave analysis were used to derive central aortic pressure and hemodynamic indices at baseline and 1, 3, and 6 months after ablation. Ten patients with resistant hypertension not undergoing RD served as controls. Results RD significantly reduced mean central aortic BP from 167/92 mm Hg to 149/88 mm Hg, 147/85 mm Hg, and 141/85 mm Hg at 1, 3, and 6 months (p < 0.001), respectively. Aortic pulse pressure decreased from 76.2 +/- 23.3 mm Hg to 61.5 +/- 17.5 mm Hg, 62.7 +/- 18.1 mm Hg, and 54.5 +/- 15.7 mm Hg 1, 3, and 6 months after RD (p < 0.001), respectively. Six months after RD aortic augmentation and augmentation index were significantly reduced by -11 mm Hg (p < 0.001) and -5.3% (p < 0.001), respectively. Carotid to femoral pulse wave velocity showed a significant reduction from 11.6 +/- 3.2 m/s to 9.6 +/- 3.1 m/s at 6 months (p < 0.001). Consistently, ejection duration and aortic systolic pressure load were significantly diminished, indicating improvement of cardiac work load by RD. No significant changes were obtained in control patients. Conclusions Besides the known effect of RD on brachial blood pressure, the study showed for the first time that this novel approach significantly improves arterial stiffness and central hemodynamics, which might have important prognostic implications in patients with resistant hypertension at high cardiovascular risk. (J Am Coll Cardiol 2012;60:1956-65) (C) 2012 by the American College of Cardiology Foundatio