(1) In a prospective study, the influence of the length of the time interval on spontaneous variability was investigated in 100 patients with CAD or IDC and untreated ventricular arrhythmia of Lown grade IV.
(2) According the degree of septal thickness (ST), patients were classed in 4 groups: (formula; see text) This study allows to conclude that mean and severe concentric LVH (ST greater than or equal to 12) detected by echo are associated with a greater PVC and a higher Lown's class ventricular ectopy.
(3) Three patients were withdrawn from the study at the end of the first period (1 after SR nicardipine and 2 after chlorthalidone) because of severe arrhythmias (Lown's class 4B) requiring antiarrhythmic therapy.
(4) A 79-year-old patient, who had received a pacemaker after suffering two posterior myocardial infarctions, was treated with 2 X 100 mg flecainide daily for 9 days for ventricular extrasystoles (Lown IV b).
(5) Ventricular arrhythmias were absent in 60% of the group, while among the 41 patients presenting these phenomena, as many as 32 presented simple forms, while only 5 were in Lown's class IV and 2 of these due to a single pairing, 1 a single triplet.
(6) A positive correlation was found between the extent of LV damage and the occurrence of complex arrhythmias expressed as the highest Lown class.
(7) The control-group revealed no late potentials although 4 patients had Lown IVa or more in Holter-ECG.
(8) The Lown and the Italian Modified Lown classifications were used.
(9) A new syndrome of ventricular pre-excitation syndrome is differentiated--of additional obscure retrograde conducting ventricular-atrial connection, different from the so far known syndrome of Wolff-Parkinson-White, Lown-Ganong-Levine and syndrome of Mahaim.
(10) Multivariate Cox's hazard function analysis on 18 variables, including age, type of infarction, Lown and Killip class, ejection fraction, and medications, showed that the presence of ST changes on Holter monitoring was a significant predictive variable for one-year mortality in the overall study population and particularly in the subgroup of 59 patients who could not undergo early exercise treadmill testing.
(11) Ventricular extra systoles were recorded in 31 patients (65.9%), 70.97% being from class III-V according to Lown.
(12) According to the long-term ECG recordings 22 patients were classified as Lown IV.
(13) Ventricular couplets or triplets (Lown grade IV) were found in less than 10% in patients in age from 15 to 17 years, 33% in patients from 18 to 20 years and showed no increase with age.
(14) In order to evaluate the effects of propafenone (an antiarrhythmic class 1 c agent) acutely administered intravenously on left ventricular function, 10 patients with acute myocardial infarction (AMI), affected by arrhythmias (greater than or equal to Lown class III), belonging to Killip class I and II, and with normal serum electrolyte levels, were studied 2-4 days after an acute episode.
(15) Thus the short PR wide QRS syndrome is not always a result of the Wolff-Parkinson-White syndrome but can also be seen in the Lown-Ganong-Levine syndrome coexisting with bundle-branch block.
(16) In 6 patients with normal resting electrocardiogram, AEM revealed: first degree A-V block (4 cases), class IVa Lown ventricular arrhythmias (3 cases) and episodes of atrial fibrillation (4 cases).
(17) The study population consisted of 27 pts; 22 (81%) were in Lown class 4A (18%) or 4B (63%).
(18) The Lown's type 3 ventricular beats had a 50% reduction.
(19) In order to clarify the role of age and hypertension in determining arrhythmias, we evaluated the average heart rate, and the number of supraventricular and ventricular premature beats and their severity (Lown grade) by 24-h Holter electrocardiography of 336 patients.
(20) The atrial depolarization pattern was studied in 22 patients with Wolff-Parkinson-White and Lown-Ganong-Levine syndrome.
Origin
Definition:
(n.) The first existence or beginning of anything; the birth.
(n.) That from which anything primarily proceeds; the fountain; the spring; the cause; the occasion.
(n.) The point of attachment or end of a muscle which is fixed during contraction; -- in contradistinction to insertion.
Example Sentences:
(1) Our results suggest that the peripheral sensitivity to hypoxia declined more than that to CO2, implying a peripheral chemoreceptor origin for hypoxic ventilatory decline.
(2) These immunocytochemical studies clearly demonstrated that cells encountered within the fibrous intimal thickening in the vein graft were inevitably smooth muscle cell in origin.
(3) The nuclear origin of the Ha antigen was confirmed by the speckled nuclear immunofluorescence staining pattern given by purified antibody to Ha obtained from a specific immune precipitate.
(4) The origin of the aorta and pulmonary artery from the right ventricle is a complicated and little studied congenital cardiac malformation.
(5) The origins of aging of higher forms of life, particularly humans, is presented as the consequence of an evolved balance between 4 specific kinds of dysfunction-producing events and 4 kinds of evolved counteracting effects in long-lived forms.
(6) These cells contained organelles characteristic of the maturation stage ameloblast and often extended to the enamel surface, suggesting a possible origin from the ameloblast layer.
(7) We conclude that chloramphenicol resistance encoded by Tn1696 is due to a permeability barrier and hypothesize that the gene from P. aeruginosa may share a common ancestral origin with these genes from other gram-negative organisms.
(8) Typological and archaeological investigations indicate that the church building represents originally the hospital facility for the lay brothers of the monastery, which according to the chronicle of the monastery was built in the beginning of the 14th century.
(9) Plasma NPY correlated better with plasma norepinephrine than with epinephrine, indicating its origin from sympathetic nerve terminals.
(10) Interadjudicator agreement was stronger on 'originality' than on 'aesthetic pleasingness'.
(11) One rare case of blind-ending branch originating in the upper third of the ureter are described.
(12) It is my desperate hope that we close out of town.” In the book, God publishes his own 'It Getteth Better' video and clarifies his original writings on homosexuality: I remember dictating these lines to Moses; and afterward looking up to find him staring at me in wide-eyed astonishment, and saying, "Thou do knowest that when the Israelites read this, they're going to lose their fucking shit, right?"
(13) As the requirements to store and display these images increase, the following questions become important: (a) What methods can be used to ensure that information given to the physician represents the originally acquired data?
(14) The condition is compared to extrahepatic and intrahepatic biliary atresia of man and evidence is presented for regarding this case to be one of extrahepatic origin.
(15) The position of the cyst supports the theory that branchial cysts are congenital in origin.
(16) heterografts of GW-39, a CEA-producing colonic tumor of human origin, was demonstrated in radioimmunoassay using radioiodinated CEA purified from GW-39.
(17) The committee reviewed the history, original intent, current purpose, and effectiveness of meetings held on the unit; when problems were identified, suggestions for change were formulated.
(18) The relative strength of the progressions varies with excitation wavelength and this, together with the absence of a common origin, indicates the existence of two independent emitting states with 0-0' levels separated by either 300 or 1000 cm-1.
(19) Sickle and normal discocytes both showed membrane elasticity with reversion to original cell shape following release of the cell from its aspirated position at the pipette tip.
(20) With respect to family environment, a history of sexual abuse was associated with perceptions that families of origin had less cohesion, more conflict, less emphasis on moral-religious matters, less emphasis on achievement, and less of an orientation towards intellectual, cultural, and recreational pursuits.