Cardiac thrombosisis the formation of blood clots in the cavities of the heart.
Sutherland reports an instance where thrombosis of the basal artery was found postmortem.
Thrombosis of vessels is found both in the neighborhood of hemorrhage and elsewhere, the thrombi at times completely occluding the vessels and giving rise to typical wedge-shaped infarcts.
Although at first unilateral, the thrombosis usually spreads across the middle line to the sinus of the opposite side.
If large veins are injured, thrombosis may occur, and be followed by pulmonary embolism.
Serious hæmorrhage may result from erosion of the vessels traversing the gland or of the internal jugular vein, or venous thrombosis may ensue.
If the cerebral sinuses are affected, mental disturbances arise; if a cardiac thrombosis is present, it is frequently accompanied by irregularity and feebleness of the heart.
Thrombosis of the veins may be a physiological phenomenon, or may be due to an alteration of the blood, to weakness of the heart, or to local influences.
They are also especially associated with thrombosis of the veins, which occurs to a less extent in the nodular form and conduces to the dark-blue tint of the mucosa.
Although thrombosis is commonly a morbid process, it is not uniformly so.
Thrombosis with softening and decomposition of the thrombus and embolism, causing local abscesses in the viscera wherever the septic emboli lodge, but without the development of any general infective process.
The endothelium then undergoes proliferation, and thrombosisis produced.
The symptoms of thrombosis obviously depend upon the resulting obstruction to the circulation of blood, and in the case of primitive thrombi are gradual in their occurrence.
Thrombosis of veins, as in phlegmasia alba dolens, occurs much more rarely than after typhoid fever.
Of the latter, we havethrombosis of the cerebral sinuses, hemorrhages, emphysema, and exhaustion following constant vomiting.
The symptoms of the subsequent effects of thrombosis and embolism are to be inferred from what has already been stated with regard to the nature of the possible lesions.
Thrombosis of other veins is to be treated on the same general principles.
Distinct from this is another condition in which thrombosis of the diploic veins occurs.
If there be thrombosis of the bulb of the jugular vein.
Even if there be no symptoms necessitating immediate interference, operation is usually indicated owing to the fact that cholesteatoma is the commonest predisposing cause of intracranial suppuration and septic thrombosis of the lateral sinus.
The best results have been attained in the chronic forms of the disease where the thrombosis was limited.
It is important to note that these fatal cases of pulmonary embolism occur when they are least expected, and it is an unusual sequence in patients with obviousthrombosis of the femoral and saphenous veins.
The chief intracranial complications are meningitis and cerebellar abscess; the former usually from extension of the septic thrombosis along the petrosal sinuses.
Hunterian Lecture onThrombosis and Embolism after Operations on the Female Pelvic Organs.
The sinus should always be opened as soon as it is certain that septic thrombosis has occurred.
It is, however, undeniable that thrombosisof the pelvic veins after ovariotomy, or hysterectomy, is a source of fatal emboli.
In thrombosis of the cavernous sinus the only hope of recovery lies in its exposure and incision of its wall.
By thrombosis is generally understood the partial or complete closure of a vessel by a morbid product developed at the site of the obstruction.
In a certain proportion of cases, especially in elderly people, the occurrence of thrombosis leads to cure of the condition by the thrombus becoming organised and obliterating the vein.
Gangrene due to thrombosis or embolism is sometimes met with in patients recovering from typhus, typhoid, or other fevers, such as that associated with child-bed.
Sometimes a portion of the clot in the sac is separated and becomes impacted as an embolus in the artery beyond, leading to thrombosis which first occludes the artery and then extends into the sac.
Under these conditions thrombosis is essentially a reparative process, and has already been considered in relation to the repair of blood vessels.
In other cases they are due to aneurysm of the ophthalmic artery, to thrombosis of the cavernous sinus, and, in rare instances, to cirsoid aneurysm.
Thrombosis in Tortuous and Pouched Great Saphena Vein, in longitudinal section.
Middle-ear disease causes death, either by producing an abscess of the brain, or by causing thrombosis of some of the large veins within the skull.
If patients become very much weakened, as is not infrequently the case, thrombosis occurs, and portions of the clots may be shot into the pulmonary veins, and cause death in this way.
Very often in them, as in tuberculosis, {159} thrombosis plays an important role in the fatal termination.
If the patient has been very much run down, death may take place from thrombosisof some of the arteries.
If the thrombosis takes place in the brain, consciousness will be lost, and the patient will often die without recovering it.
In this case there was thrombosisof the pelvic veins.
Thrombosis and embolism cause a sudden or gradual stoppage of the blood stream in a vessel, and in consequence, either moist or dry gangrene occurs, depending on the time required for the obstruction to become complete.
The stoppage of the outflow because of thrombosis in a large vein, will cause moist gangrene; the part being unable to drain, will, by back pressure, arrest circulation.
Lymphangitis and venousthrombosis are not of infrequent occurrence in connection with varicose ulcers, while embolism and even pyemia are sometimes in evidence.
Varicose veins are apt to inflame and thrombosis frequently occurs.
This is the variety commonly met with from crushing or cutting accidents; from the effects of carbolic and other acids; from cold; and from thrombosis and embolism.
If there is general oedema, the cause will probably be found in disease of the kidneys; or if in one limb, in pressure or thrombosis of one iliac vein.
Stich records a case of perforation of the aorta; Eichenhorst mentions the formation of abnormal communication with the gall-bladder; and Frerichs, a thrombosis of the vena porta in consequence of duodenal ulcer.
Thrombosis of a stomach vein may occur, to be followed by an acute ulcer, and from this considerable hemorrhage may proceed, when the vomit will consist of blood.
The most significant symptom of portal thrombosis is a quickly-forming ascites.
As there is no symptom ofthrombosis of the portal which may not be caused by advanced cirrhosis, the diagnosis rests on the rapid production of the attendant phenomena and their conjoint appearance.
Thrombosis and Embolism of the Portal Vein; Stenosis; Pylephlebitis.
Being an evidence of great weakness of the circulation, marantic thrombosis in cancer of the stomach is of grave prognostic import.
It is true, ascites is a common symptom in advanced cirrhosis, but the rapid accumulation of fluid and the prompt filling of the cavity after tapping distinguish that which arises from portal thrombosis from all others.
There may occur thrombosis of the portal, in which event the ascites will form very quickly, and return as quickly after tapping.
These lesions are so analogous to those which attend thrombosis occurring in other organs that their dependence upon the same cause seems probable.
Ulcerative lesions in the larynx during typhoid fever are almost always the result of mixed infection, though thrombosis of a small vessel, with subsequent necrosis is also seen.
Embolism or thrombosis of the posterior cerebral artery is a reported cause in two cases.
The obturation being incomplete, it may be impossible by palpation to decide that thrombosis really exists.
Thrombosis of the Aorta, Iliacs and Branches 211 Fig.
It does not follow, however, that iliacthrombosis rarely exists.
Thrombosis of the brachial artery or of its principal branches is of very rare occurrence in horses.
A characteristic type of lameness signalizes iliac thrombosis and the following brief abstract from a contribution on this subject by Drs.
Illustrative of thrombosis of the aorta, iliacs and branches.
Thrombosis is favored, and where atheromatous ulcers are formed, embolism is to be feared.
Quite different would it be should one of the small arteries of the brain, the lenticulo-striate, for example, which supplies the corpus striatum, become the seat of a thrombosis or embolism caused by arteriosclerosis.
The variety of the anatomical derangements caused by embolism and thrombosis of the intestinal arteries is faithfully mirrored by the variety of the clinical symptoms and the different degrees in the intensity and course of the colic.
The partial paralysis of the bowel, which is brought on by the embolism and thrombosis of the mesenteric arteries, forms in great part the chief and leading feature of the series of symptoms known as the “colic” of horses.
The dangerous symptoms of the worm-aneurism are exclusively due to embolism and thrombosis of the affected artery, arising from the parietal clot.
In embolism and thrombosis of the mesenteric arteries the symptoms during life are entirely identical with those observed in the so-called colic of horses, as has been determined by numerous observations.
