Anatomical origin of pressure-related ventricular ectopic rhythms
Φόρτωση...
Ημερομηνία
Συγγραφείς
Sideris, D. A.
Toumanidis, S. T.
Stringli, T. N.
Kontoyannis, A.
Spyropoulos, G. S.
Moulopoulos, S. D.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Int J Cardiol
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
In order to determine the origin of pressure-related ectopic rhythms, the main arteries were clamped in 11 anesthetized dogs, or the arteries or veins were transfused, while on or off metaraminol. The epicardial right atrial electrogram, the intracavity electrograms and the pressure of the two ventricles were recorded. Sinus rhythm was associated with 64/64 (100%) of the control periods off metaraminol, but only 19/50 (38%) of the clamping of the main arteries (P << 0.0005). In 14/27 aortic clampings ectopic beats appeared from the left ventricle and in 13/27 from the right one. In 4/23 clampings of the pulmonary artery ectopic beats appeared from the left ventricle and in 15/23 from the right one (P < 0.05). Sinus rhythm was associated with significantly lower left ventricular systolic pressure than any ventricular arrhythmia. The left ventricular systolic pressure associated with ectopic rhythms from the left ventricle was significantly (P < 0.005) higher than that associated with those from the right ventricle. The right ventricular systolic pressure during sinus rhythm was significantly (P < 0.005) lower than that during ectopic rhythm from any ventricle. It is concluded that a rise in the pressure of one ventricle tends to cause ventricular ectopic rhythms originating predominantly, but not exclusively, from this ventricle. The origin of ventricular ectopic rhythms from the right ventricle does not preclude that the arrhythmia may respond favorably to lowering of the systemic pressure.
Περιγραφή
Λέξεις-κλειδιά
Animals, Blood Pressure/drug effects/*physiology, Disease Models, Animal, Dogs, Electrocardiography, Evaluation Studies as Topic, Heart Conduction System/physiology, Metaraminol/pharmacology, Physical Stimulation, Pressoreceptors/drug effects/*physiology, Tachycardia, Ventricular/*etiology/pathology/physiopathology
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/1468821
http://ac.els-cdn.com/0167527392902688/1-s2.0-0167527392902688-main.pdf?_tid=7d7d1d0a9dd41abd40b3ba4215c9a3d9&acdnat=1337847591_85c9674688a7f3cb4dde9d2f54439833
http://ac.els-cdn.com/0167527392902688/1-s2.0-0167527392902688-main.pdf?_tid=7d7d1d0a9dd41abd40b3ba4215c9a3d9&acdnat=1337847591_85c9674688a7f3cb4dde9d2f54439833
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής