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1.
Chronobiol Int ; 37(5): 767-770, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-32684003

RESUMEN

The history of hypertension the past hundred years is a successful story of the fall of myths, beliefs, and assumptions under the weight of evidence. The recent editorial by Kreutz et al. (2020),"Blood pressure medication should not be routinely dosed at bedtime. We must disregard the data from the HYGIA project", published in Blood Pressure, conveys unjustified concerns founded on baseless doubts and suspicions about the Hygia Chronotherapy Trial. The physicians of Portugal are beginning to incorporate into routine clinical practice the proven methods of the Hygia Chronotherapy Trial - 48-hour ambulatory blood pressure monitoring and bedtime hypertension chronotherapy - to improve in a cost-effective matter the diagnosis and management of hypertension and to reduce the overwhelming burden of cardiovascular morbidity and mortality in our country.


Asunto(s)
Monitoreo Ambulatorio de la Presión Arterial , Hipertensión , Antihipertensivos/uso terapéutico , Presión Sanguínea , Cronoterapia , Ritmo Circadiano , Humanos , Hipertensión/tratamiento farmacológico , Portugal
2.
Rev Port Cardiol (Engl Ed) ; 37(10): 859-863, 2018 Oct.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-29804887

RESUMEN

Proton pump inhibitors are currently one of the most prescribed pharmacological classes in developed countries, given their effectiveness and safety profile, which has until now been considered favorable. However, in recent years, several papers have been published that associate prolonged use of these drugs with a wide range of adverse effects, posing doubts about their safety. Among the adverse effects described is an increased risk of cardiovascular events. This relationship was first described in subjects after acute coronary syndrome due to the interference of proton pump inhibitors in the cytochrome P450 2C19 and the conversion of clopidogrel to its active metabolite. More recent studies have also reported this relationship with the use of antiplatelet agents that do not depend on cytochrome P450 2C19 activation. The proposed mechanism is inhibition of dimethylarginine dimethylaminohydrolase, a physiological inhibitor of asymmetric dimethylarginine, which increases plasma concentrations of the latter enzyme, leading to lower levels of nitric oxide. By reviewing in this article the relationship between the use of proton pump inhibitors and increased risk of cardiovascular and cerebrovascular events, the authors aim to alert the medical community to the potentially harmful effects of these drugs, and recommend the setting of a moratorium on their prolonged use.


Asunto(s)
Isquemia Miocárdica , Inhibidores de la Bomba de Protones/efectos adversos , Humanos , Isquemia Miocárdica/inducido químicamente , Isquemia Miocárdica/epidemiología , Isquemia Miocárdica/mortalidad , Factores de Riesgo
5.
Rev Port Cardiol ; 31(5): 381-4, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22480937

RESUMEN

Aortic coarctation (AC) represents -7% of congenital cardiac diseases and is usually diagnosed in childhood or early adult Life, depending on the severity of obstruction and associated malformations. Left untreated fewer than 20% of patients survive to age 50. We describe a case of thoracic AC, diagnosed at age 61, in a woman with known hypertension since age 45. At age 56 the patient was admitted with a subarachnoid hemorrhage and, during cerebral angiography, a thoracic aortic aneurysm was detected. Four years later the patient was referred to the outpatient hypertension clinic due to uncontrolled hypertension and cardiac failure. The echocardiogram disclosed left ventricular hypertrophy and aggressive treatment failed to control her hypertension. At age 61, due to lower limb muscular fatigue, arterial Doppler ultrasound was performed that revealed symmetrically decreased ankle/brachial pressure index, suggesting aortic stenosis. MRI angiography enabled a diagnosis of AC with a large poststenotic dilation which had been interpreted as an aortic aneurysm in successive CT scans. The authors highlight the unusually late clinical presentation and misdiagnosis despite extensive radiologic investigation. The subarachnoid hemorrhage was probably a disease manifestation, since berry aneurysms are among the noncardiac malformations associated with AC.


Asunto(s)
Aneurisma de la Aorta Torácica/diagnóstico , Coartación Aórtica/diagnóstico , Errores Diagnósticos , Femenino , Humanos , Persona de Mediana Edad
6.
Rev Port Cardiol ; 29(2): 299-308, 2010 Feb.
Artículo en Inglés, Portugués | MEDLINE | ID: mdl-20545254

RESUMEN

Pheochromocytoma is a catecholamine-secreting tumor, for which the treatment of choice is complete surgical resection, when possible. Some form of preoperative pharmacological preparation is indicated. Most centers use alpha blockade, phenoxybenzamine being the preferred drug. There is little experience with the use of other alpha-blocking agents. The authors report three different cases in which doxazosin was used: as preoperative preparation of a patient with pheochromocytoma, as preparation for therapy in I-131-MIBG of a patient with a malignant pheochromocytoma, and as a pre-cesarean preparation in a pregnant woman with multiple endocrine neoplasia type 2A (MEN-2A). Doxazosin provided a safe alternative to phenoxybenzamine in the three cases described, with some advantages that the authors summarize.


Asunto(s)
Neoplasias de las Glándulas Suprarrenales/tratamiento farmacológico , Antagonistas Adrenérgicos alfa/uso terapéutico , Doxazosina/uso terapéutico , Feocromocitoma/tratamiento farmacológico , Adulto , Anciano , Femenino , Humanos , Persona de Mediana Edad
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