This book will explore the many aspects of the transcatheter aortic valve replacement, from the clinical data supporting the observed worldwide diffusion, to the technicalities that evolved over time in parallel with the continuous new iterations of available devices. Both the interventionalists looking for a reference to literature milestones and the interventionalists searching for the description and execution of the procedure will find what they are looking for. Many answers will be there through the pages, but also some pending questions to fuel future developments and to further refine a procedure that truly changed the landscape of cardiology.
This book will explore the many aspects of the transcatheter aortic valve replacement, from the clinical data supporting the observed worldwide diffusion, to the technicalities that evolved over time in parallel with the continuous new iterations of available devices. Both the interventionalists looking for a reference to literature milestones and the interventionalists searching for the description and execution of the procedure will find what they are looking for. Many answers will be there through the pages, but also some pending questions to fuel future developments and to further refine a procedure that truly changed the landscape of cardiology.
Constipation is a common disorder that is often defined differently by patients and physicians. Clinically, constipation occurs when bowel move ments are difficult or painful. The "normality" of bowel movements, in terms of frequency, varies among individuals; frequency that is thought by one person to be constipation may be reported by another to be usual and thus normal. Often the perceived "need" to have a bowel movement leads to self-treatment with laxatives as these drugs are widely available without a prescription. This situation can raise problems in patient care, because of potential interactions between laxatives and other medications. Furthermore, chronic use (abuse) oflaxatives can cause serious medical consequences, causing patients to visit physicians, and even to be hospitalized for further evaluation and care. This has a financial impact on the patient, and on health care systems. It is essential that pharmacists, physicians and other health care practitioners counsel patients on the causes of constipation and the proper use oflaxatives. A medical work-up by a physician should be done to determine if the constipation is due to a pathological process. Often nor mal bowel function (for an invididual) can be maintained by diet and/or lifestyle. Most laxatives in use today are of botanical origin. Further research on the mechanism of action of these and synthetic laxatives is needed to bet ter define their pharmacology and toxicology.
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