(n.) The main substance of the muscular wall of the heart inclosed between the epicardium and endocardium.
Example Sentences:
(1) The acute effect of alcohol manifested itself by decreasing mitochondrial respiration, compensated by increased glycolytic activity of the myocardium so that myocardial energy phosphate concentration remained unchanged.
(2) The myocardium was assumed to be composed of a nonlinear viscoelastic, inhomogeneous, anisotropic (transversely isotropic) and incompressible material operating under adiabatic and isothermal conditions.
(3) Comparison with 99Tc-pyrophosphate uptake in infarcted dog heart, induced by selective obstruction of a coronary artery, suggest that the 111In-labelled F(ab')2 localizes specifically in infarcted myocardium only.
(4) By means of rapid planar Hill type antimony-bismuth thermophiles the initial heat liberated by papillary muscles was measured synchronously with developed tension for control (C), pressure-overload (GOP), and hypothyrotic (PTU) rat myocardium (chronic experiments) and after application of 10(-6) M isoproterenol or 200 10(-6) M UDCG-115.
(5) Distant ischemia was distinguished from peri-infarctional ischemia by the presence of transient thallium defects in, or slow thallium washout from myocardium not supplied by the infarct-related coronary artery.
(6) Administration of one of the precursors of noradrenaline l-DOPA not only prevented the decrease in tissue noradrenaline content in myocardium, but restored completely its reserves, exhausted by electrostimulation of the aortic arch.
(7) The terms of maximum reduction of the enzymatic activity falling within the 4th-6th and 24th hours and 2nd day should be taken into account while developing the methods of metabolic protection and enzyme therapy of the ischaemic myocardium.
(8) Previous studies have reported that the numbers of beta- and alpha-adrenergic receptors increase in ischemic myocardium.
(9) With a series of 117 aortic valve replacements, the authors have examined the results in relation to the method of protecting the myocardium while the aorta is clamped off.
(10) Acute transmural myocardial infarction has been reported to functionally denervate the normal myocardium distal to the infarcted zone by interrupting neurotransmission in axons coursing in the subepicardial region of the myocardial necrosis.
(11) Defects of mitochondrial DNA have been found at necropsy in the myocardium of patients with Kearns-Sayre syndrome.
(12) Little anatomic information is available on the annular myocardium.
(13) Dietary fat can modify the vulnerability of the myocardium to arrhythmic stimuli.
(14) Isotonically, peak muscle shortening was reduced in the left muscle, whereas time to peak shortening was prolonged in the right myocardium.
(15) The maximum functional response of catecholamine injured hearts to stimulation of alpha- and beta-adrenoceptors reduced in both age groups, while the sensitivity of the myocardium to beta-adrenoceptor agonists in mature rats increased.
(16) Complex treatment with inclusion of thymalin resulted in an increase of the thymic factor, normalization of the lipid metabolism increase of the contractile function of the myocardium and, thus, increases the treatment efficacy.
(17) Under a dissecting microscope the vascular casts revealed direct communications from the skeletal muscle which penetrated deeply into the myocardium.
(18) When the same dose of ISO was administered to rats with aortic constriction the rise in labelled Ca uptake by the hypertrophied myocardium of the left ventricle was greatly reduced.
(19) Thus, small doses of thyroid hormones restrict significantly stress induced activity of LP membranes, increasing the power of antioxidant systems both in the myocardium and in the organism.
(20) The constrictor may be used for studies on the development of collaterals as well as on therapeutic measures in chronic ischemia of the myocardium.
Pericardium
Definition:
(n.) The double baglike fold of serous membrane which incloses the heart.
Example Sentences:
(1) These data demonstrate that 1) the pericardium increases ventricular interaction in both preterm and newborn lambs and 2) the relative percentage increase is similar for both age groups and not age dependent.
(2) Two patients had hilar lymph node metastases, one of them had also involvement of pericardium.
(3) The technique described involves placement of an intraluminal shunt and resection of the involved caval wall with reconstruction using autologous pericardium.
(4) 6 patients had thickened pericardium, and 3 had constrictive features.
(5) Experience with glutaraldehyde- and glycerol-treated pericardium in valvular applications in sheep support these observations.
(6) In addition, there are basic differences in the PNI formation on aldehyde-treated pericardium and natural aortic valves as compared to the Dacron fabric.
(7) Wide resection of tumor including pericardium, chest wall, left lung and left brachiocephalic vein was performed.
(8) The terminology of the pericardial sinuses and recesses has been inconsistent, and the authors propose a nomenclature for standardizing the names of the recesses of the serous pericardium.
(9) Two previously unnamed recesses within the serous pericardium are defined and named, one the inferior aortic recess of the transverse sinus and the other, the right pulmonic recess of the transverse sinus.
(10) Complete or partial absence of the pericardium is a relatively rare disorder.
(11) A review of 30 chest scans without evidence of heart disease showed that the pericardium can be seen in the majority of cases.
(12) The pericardium microcirculatory bed of rabbits was studied under conditions of hypokinesia of different duration.
(13) Fifty-one episodes of acute cardiac tamponade were induced to decompensation (decline in mean aortic blood pressure to 70% of the level present when the pericardium was free of fluid) in 6 dogs by intrapericardial infusion of warmed saline solution.
(14) A case of pericardial rupture with herniation of the heart through the pericardium into the left hemithorax is described.
(15) The artificial pericardium reduced adhesion, thus facilitating reoperation in implants lasting up to a month.
(16) Early recognition of these tumors within the pericardium is important since surgical removal is often curative.
(17) Its specific applications in surgical planning include the question of chest wall invasion, brachial plexus involvement, and transgression of the diaphragm, pericardium, or lung apex.
(18) The tumor was excised with the thymic glands together with the involved ascending aorta and pericardium.
(19) This follows from the fact that measured left ventricular diastolic pressure is equal to the sum of the pressure differences accross the myocardium and the pericardium.
(20) These results indicate that glutaraldehyde-tanned bovine pericardium can induce immunologic responses in vivo consistent with a host-versus-graft reaction.