scholarly journals Observations on certain physiological processes of the marmot— III, IV and V

The oxygen saturation of the arterial blood was the subject of observations upon two hibernating marmots. Blood from the left ventricle was with-drawn by the method of cardiac puncture. The blood was not exposed to air. Post-mortem examination of the heart wall established the facts that the needle penetrated the wall of the left chamber and not that of the right. The analysis of the blood was made by the differential method. The marmots were sleeping soundly. The effects of Alterations of Temperature on the Oxygen Equilibrium of the Red Corpuscles . Experiments were made on the relation of temperature to the oxygen-combining power of the corpuscles; I am grateful to Dr. Stier and Dr. Rothschild for assistance in these experiments.

1991 ◽  
Vol 1 (2) ◽  
pp. 155-157 ◽  
Author(s):  
James P. Gnanapragasam ◽  
Allan B. Houston ◽  
Robert H. Anderson

SummaryWe describe an unusual heart in which double outlet from the left atrium resulted in atrioventricular connections to a dominant left ventricle and to a left-sided rudimentary right ventricle, while the right atrium also connected to the left ventricle. This produced, in effect, double inlet left ventricle in association with discordant atrioventricular connections. The diagnosis was made by echocardiography and confirmed at post mortem examination.


1925 ◽  
Vol 71 (295) ◽  
pp. 729-729
Author(s):  
Wm. Leonard Forsyth

Post-mortem examination of brain.—The dura and leptomeninges are normal and there is no excess of fluid. The right hemi-cranium is health. Section of the left shows a large area of rather recent hæmorrage into the substance of the white matter of the left occipital lobe. This area is confined to the white matter of the lobe, and does not communicate with either the posterior horn or the descending horn of the lateral ventricle, or the exterior.


2021 ◽  
Vol 9 (209) ◽  
pp. 1-30
Author(s):  
LETÍCIA FERNANDES RODRIGUES ◽  
Thiago Rodrigues Fernandes

The present work aims to analyze whether the children conceived after the death of the parent by homologous fertilization have the right to inheritance, seeking to conceptualize the institutes of inheritance law and artificial insemination, analyzing the constitutional principles and the sources of law, so that find the best answer on the topic. The article will be divided into 3 parts. The first will try to explain the succession law (master of the law that regulates the transfer of assets, rights and obligations to the heir after the death of an individual) in the light of Brazilian legislation, explaining the existing Types of Succession. The second part of this article will address Assisted Human Reproduction, pointing out the different conceptions of the concept of family that has undergone significant modification over time. In addition, the second part will also deal with Artificial Insemination, which is an assisted reproduction treatment that expands the possibilities of fertilization of the egg, as well as its divisions. It also points out the principles of Brazilian law applicable to assisted human reproduction. The last part of this work will analyze post mortem artificial insemination and the effects on inheritance law based on legislation, doctrine and principles applicable to the subject, pointing out the three doctrinal currents that emerged with the aim of filling this legislative vacuum. This research is categorized as explanatory, as it aims to identify the factors that determine and contribute to the succession of the post mortem inseminated child, the procedure used in this study will be the bibliographic research.


1875 ◽  
Vol 20 (92) ◽  
pp. 517-527 ◽  
Author(s):  
J. Hughlings Jackson

Some years ago I published a pamphlet (reprinted, with slight alterations, from the “St. Andrew's Medical Graduates' Transactions,” vol. iv., 1868) on Nervous Affections in Inherited Syphilis. At that time I had had bat one post-mortem examination. The patient was a girl, the daughter of the patient Joseph Mx., whose case is the second of two related by me in this Journal for July, 1874. She had epileptic fits. She died of typhoid fever, and no lesion of a syphilitic nature was discovered post-mortem. Thus I learned nothing from this case. In the “Brit. Med. Journal,”* May 18, 1572, I have reported a case of hemiplegia, previously unpublished, in a woman aged 22, who was manifestly the subject of inherited syphilis. That patient was in good general health, and is, I hope, still living.


1969 ◽  
Vol 43 (1-2) ◽  
pp. 167-172
Author(s):  
Alan W. Pike

This redescription is based on specimens taken from the leg of a moorhen, Gallinula chloropus (L.), that was found alive, but paralysed, in Adwick-le-Street, Doncaster, Yorkshire. The heel joints of both legs were distended and found to be infected with nematodes. The paralysis may have been caused by debility due to blood loss as a result of injury, rather than a direct effect of the parasite because a post-mortem examination also revealed “severe bruising of the right ribs and the liver had ruptured to produce an internal haemorrhage.”


1878 ◽  
Vol 26 (179-184) ◽  
pp. 314-321

In a communication published in the ‘Transactions of the Royal Society ’(1860, p. 579) I gave the results of analyses showing that what had previously been looked upon, under Bernard’s glycogenic theory, as the natural condition of the blood in relation to sugar was a fallacious representation due to a post mortem change being allowed to exert its influence. It had hitherto been asserted that the blood of the right side the heart was in a notably different condition as regards the amount of sugar it contained from that of the arterial system, an error which I discovered arose from the non-observance of certain precautions in the mode of obtaining the blood for examination from the respective parts of the vascular system. Whilst the arterial blood had been collected during life, it was customary to collect that from the right side of the heart, without any special haste, after the destruction of the life of the animal. During the period thus allowed to elapse between the moment of death and the collection of the blood, an alteration occurs from the post mortem production of sugar in the liver, which causes the blood to assume an extent of saccharine impregnation which does not naturally belong to it during life, and which had faded to be recognized in its true light. I gave analyses which show that what was formerly taken as representing he natural condition of the blood of the right side of the heart furnished from .50 to .94 per cent., or, as it is more convenient to state it, 5.0 to 9.4 per 1000 of sugar, the blood from the carotid artery of the same animals, collected during life, having contained what I described as a trace of sugar. Other analyses, three in number, were given, representing the true condition of the blood belonging to the right side of the heart during life, and the results indicated from .47 to .73 per 1000 as the amount of sugar. Bernard has recently published some communications entitled “Critiques expérimentales sur la glycémaie,” in the Comptes Rendus de I’Académie des Sciences de Paris. His statements are founded upon a method of analysis which is not only strikingly devoid of precision as a quantitative analytical process, but in itself of a nature calculated to give rise to a fallacious result.


2005 ◽  
Vol 289 (5) ◽  
pp. H1889-H1897 ◽  
Author(s):  
R. C. P. Kerckhoffs ◽  
O. P. Faris ◽  
P. H. M. Bovendeerd ◽  
F. W. Prinzen ◽  
K. Smits ◽  
...  

Intraventricular synchrony of cardiac activation is important for efficient pump function. Ventricular pacing restores the beating frequency but induces more asynchronous depolarization and more inhomogeneous contraction than in the normal heart. We investigated whether the increased inhomogeneity in the left ventricle can be described by a relatively simple mathematical model of cardiac electromechanics, containing normal mechanical and impulse conduction properties. Simulations of a normal heartbeat and of pacing at the right ventricular apex (RVA) were performed. All properties in the two simulations were equal, except for the depolarization sequence. Simulation results of RVA pacing on local depolarization time and systolic midwall circumferential strain were compared with those measured in dogs, using an epicardial sock electrode and MRI tagging, respectively. We used the same methods for data processing for simulation and experiment. Model and experiment agreed in the following aspects. 1) Ventricular pacing decreased systolic pressure and ejection fraction relative to natural sinus rhythm. 2) Shortening during ejection and stroke work declined in early depolarized regions and increased in late depolarized regions. 3) The relation between epicardial depolarization time and systolic midwall circumferential strain was linear and similar for the simulation (slope = −3.80 ± 0.28 s−1, R2 = 0.87) and the experiments [slopes for 3 animals −2.62 ± 0.43 s−1 ( R2 = 0.59), −2.97 ± 0.38 s−1 ( R2 = 0.69), and −4.44 ± 0.51 s−1 ( R2 = 0.76)]. We conclude that our model of electromechanics is suitable to simulate ventricular pacing and that the apparently complex events observed during pacing are caused by well-known basic physiological processes.


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