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Journals and Conferences
Plants host at the contact zone with soil a distinctive root-associated bacterial microbiota believed to function in plant nutrition and health. We investigated the diversity of the root microbiota within a phylogenetic framework of hosts: three Arabidopsis thaliana ecotypes along with its sister species Arabidopsis halleri and Arabidopsis lyrata, as well… (More)
We studied 16 patients with electrocardiographic evidence of advanced interatrial block and retrograde activation of the left atrium (P greater than or equal to 0.12 s, and diphasic (+/-) P waves in leads II, III, and VF). Eight patients had valvular heart disease, four had dilated cardiomyopathy and four had other forms of heart disease. Patients with… (More)
In the following paragraphs we describe a case diagnosed clinically and haemodynamically as a cardiomyopathy. Atrial flutter which was not in evidence in the standard ECG was diagnosed by the use of a new technique of amplification and filtering of special surface leads (T.A.F.). The diagnosis was later confirmed by means of special internal techniques… (More)
We describe a case of 2:1 intermittent preexcitation after adenosine administration in a patient with an accessory pathway that did not show preexcitation on the basal ECG. We review the mechanisms involved that explain this event and the possible utility of adenosine to show accessory pathways that do not show preexcitation on the ECG.
A 23-year-old man who underwent surgical correction of a true pulmonary artery aneurysm is presented. Pathological features and the different surgical alternatives for treatment of this lesion are discussed.
INTRODUCTION AND OBJECTIVE The aim of the present study was to evaluate the complications in patients with functionless pacing leads retained in the cardiovascular system. PATIENTS AND METHODS We retrospectively studied 39 patients: 31 underwent surgery for electrical or mechanical failure (group I) and eight for cutaneous pocket infection (group II). The… (More)
In a 4-year interval, 3/55 (7.8%) heart transplant recipients developed (greater than 4 weeks) severe sinus node dysfunction. An epicardial ventricular pacemaker was implanted at 90, 40, and 38 days after operation. Follow-up ranged from 7 to 20 months. In two of the three cases, failure of stimulation or sensing was detected at the 3rd and 4th month after… (More)