Part 148

The morbid anatomy of septicæmia has been carefully studied of late, and it is now known that the most characteristic lesions are found in the blood and the alimentary canal.

As a manifestation of the general poisoning of the blood, it might be expected that putrefaction would follow rapidly after the death of the patient. In fact, Davine defines septicæmia as "putrefaction of a living body." Observation has now thoroughly confirmed that which was formerly an anticipation. Panum, Hemmer, and Bergmann have each called attention to the fact that rapid decomposition follows the death of all animals in which septicæmia has been produced for experimental purposes. It has also been observed that putrefaction in the human cadaver begins much sooner, and progresses much more rapidly, under similar circumstances, when the death has been produced by this disease than when it has occurred from any other cause. Furthermore, this rapid decomposition is not limited to the internal organs, but may be frequently strongly marked on the surface of the body after the lapse of twelve hours, although it has been kept in a comparatively dry and cool atmosphere. In those cases where the septicæmia has originated in an external wound it has been uniformly observed that putrefaction goes on most rapidly in the vicinity of the wound after the death of the patient.

In every case of fatal septicæmia the post-mortem examination will show that the coagulability of the blood has been diminished or destroyed. In fact, it has been abundantly shown that in all cases of true septicæmia the coagulability of the blood is more or less diminished. The few imperfect clots of blood found after death are of a deep-black color. The putrefaction of the soft tissues is greatly hastened by the presence of this blood; and, consequently, this process goes on most rapidly in the most dependent portions of the body, especially along the course of the large veins. The septicæmic blood possesses a peculiar putrefactive odor, and it is occasionally found to be acid in its reaction, according to Vogel and Scherer, making it highly probable that it will end in the formation of the carbonate of ammonium. The chemical examinations of septicæmic blood which have heretofore been made have completely failed to give satisfactory results in regard either to the existence or nature of the materies morbi in this disease, although, without doubt, there has occasionally been found, principally in the blood of those who have died of acute septic intoxication, a poisonous substance, which Bergmann designated sepsin. Microscopic examinations have shown that in the blood and also in various organs of those who have died of septicæmia there are always present, under these circumstances, a large number of the rod bacteria; in fact, they are more numerous than after death from any other infectious disease. Furthermore, they are found in the blood, lymph-glands, and cellular tissues during the whole course of the disease.

{972} There are no pathological changes in the central nervous system which arise directly from septicæmia, although in some cases, when there has been some cardiac complication or very severe dyspnoea from any cause immediately prior to the death of the patient, there may be found hyperæmia of the membranes of the cerebro-spinal axis. The brain and spinal cord remain unchanged.

The endo- and pericardium occasionally present a somewhat mottled appearance resembling ecchymosis, which is evidently a deposit from the blood, and may be washed off with water. The inner surface of the ventricles presents a similar appearance from the same cause. In addition to those changes which have been mentioned there are occasionally found some slight traces of an inflammatory process in these parts; but it never extends to the formation of pus or ulceration, which frequently happens in cases of pyæmia. The quantity of pericardial fluid is sometimes increased in septicæmia, and is generally somewhat thickened, cloudy, and slightly tinged with blood. The changes in the pleural surfaces are the same as those which have been noted in the pericardium, but any increase of the fluid within the pleural sacs is an exception to the general law, and is very rarely seen. The lungs are generally found slightly congested, but there may be some ecchymosis in exceptional cases. Pus is never found in the lungs or within the pleural cavities in pure unmixed septicæmia. The pathological changes in the liver resemble those in the lungs. This organ is commonly found in a state of passive congestion, while the color of its tissues is slightly darkened. The congestion of the kidneys and spleen in this disease is much more marked than that of the lungs and liver. The parenchymatous tissue of the kidneys is commonly found in an oedematous condition, and the tubuli uriniferi are more or less affected by a catarrhal inflammation, which is manifested by the exfoliation of granular epithelium. The same catarrhal condition, but in a milder form, is found to affect the mucous membrane of the bladder. In females the ovaries, uterus, and vagina are in a state of hyperæmia, with more or less catarrhal inflammation of the latter organ. Septicæmia invariably causes pregnant females to abort. There is commonly softening of the spleen. The alimentary canal is almost constantly affected by acute intestinal catarrh, with enlargement of the intestinal follicles and mesenteric glands, while there are frequently hemorrhages from the serous and mucous membranes. The various muscles of the body and the extremities are found to be of a dark brownish-red after the death of the patient, instead of possessing their natural pale-red color. It may now be stated, finally, that the pathological changes in septicæmia are less marked than those of pyæmia multiplex.

The semiology, etiology, and pathology of septo-pyæmia consist in a blending, in different degrees, of the essential parts of pyæmia and septicæmia; and since the pathology of both these diseases has been presented separately, it is deemed unnecessary to enter into a consideration of this combination.

SYMPTOMS OF PYÆMIA.--Pyæmia very rarely, if ever, develops except in connection with an open suppurating wound, and consequently it must generally be regarded as a wound complication or as a secondary diseased condition. Those open wounds are unquestionably the most favorably situated for the development of this disease which involve the medullary {973} cavities of the long bones, owing to the liability of unhealthy suppuration, the difficulty of complete drainage, and the favorable anatomical conditions for absorption.

Every form of pyæmia is frequently preceded by a distinctly marked prodromal stage, which varies in duration from four days to two weeks. In fact, the ordinary precursor of this disease, in all those cases in which the bones are involved, is an attack of osteo-myelitis; but in other cases the patient often complains of malaise, giddiness, headache, pain in the limbs, weakness, and loss of appetite, while the experienced surgeon will be deeply impressed with the patient's rapid emaciation and cadaverous face. These symptoms are soon followed by jaundiced skin, etc. The commencement of an attack of pyæmia is commonly manifested by a chill. The importance which will naturally be attached to this phenomenon in connection with an open wound must depend to a certain degree on the circumstances attending its occurrence; and therefore the following question will present itself: Is the chill associated with suppuration? A negative answer to this question, based on the fact that insufficient time has elapsed since the occurrence of the injury to render suppuration possible, can never fail to be a source of satisfaction to the surgeon, whose experience has taught him to dread pyæmia.

Billroth has observed in 83 cases of true pyæmia multiplex that 62 commenced with a chill, and 21 without; in 81 cases of septicæmia and simple pyæmia 24 commenced with a chill and 57 without. The number of chills in each individual patient occurred according to the following table:

Number of patients 19 21 14 15 9 5 2 3 4 1 1 1 Number of chills 1 2 3 4 5 6 7 8 9 10 13 14

In one patient during three weeks sixteen chills were observed, and probably the longer the duration of the disease the greater is the number of chills. Still, there are chronic cases with a single chill, and acute cases with many. It rarely occurs that a patient has more than one chill in twenty-four hours. Billroth noticed among his patients only sixteen who had two chills, and only six who each had three chills, in one day. The experience that fewer chills occur during the evening and night than in the morning and afternoon has been confirmed by statistics. Among 287 chills, 220 occurred from 8 A.M. to 8 P.M., while during the night, from 8 P.M. to 8 A.M., only 67 were observed. By this arbitrary division of the twenty-four hours Billroth desired to take into consideration the daily exacerbation in connection with the usual daily irritation of the wound, the bandaging, and other manipulations. He saw, for example, a chill occur three times from the introduction of a sound, and twenty times after the opening of an abscess. The time which elapsed from the first injury to the first chill is shown in the following table:

First chill began, times 14 19 15 9 4 3 2 4 Length of time after injury, in weeks 1 2 3 4 5 6 7 8

Patients who had fever before the operation were more inclined to early chills than recently-injured healthy individuals. Billroth's experience was to have only the first chill before the end of the first week. It may be further stated that nervous, irritable patients suffer much more {974} frequently from chills than those of a phlegmatic temperament. This fact has given rise to the opinion that the absorption of pus acts especially on the central nervous system.

The chills in pyæmia are supposed by Billroth to be associated with inflammation, and he says: "It must be mentioned, as a matter of observation, that chills occur almost exclusively in the commencement of an acute inflammation, and are intermittent only in intermittent fever and reabsorption of pus, while they do not occur in acute septicæmia." But the fever in pyæmia rarely intermits entirely; it is generally lower, however, in the morning than in the afternoon. This symptom is even more important than the rigors in enabling the surgeon to make a correct diagnosis. Let it, however, be remembered that the temperature frequently becomes very high within a few hours after the receipt of an injury or the performance of a surgical operation; that this high temperature may be due to septic absorption, and that this diseased condition is what we designate as septicæmia. Another condition, less marked, with an elevated but somewhat lower temperature, is usually spoken of as traumatic fever. In this condition the fever may gradually increase for a few days, and then disappear.

One important peculiarity of the temperature in pyæmia are the sudden and great changes; thus, at one hour the temperature may be slightly raised above the normal, and at the next the thermometer may mark 105° F. These sudden changes of temperature are of frequent occurrence, are not observed to the same extent in any other disease, and therefore supply a very important diagnostic indication. It is impossible to know, or even to anticipate with any degree of certainty, when the highest temperature will exist; consequently, Billroth and other writers have suggested the desirability of having a thermometer constantly kept in a position to indicate every change in the heat of the body, and a careful attendant to note the same; but, thus far, I am not aware that this has been attempted, probably on account of the inconvenience to the patient and the additional labor in nursing it would entail. It has been further observed that during the existence of a chill the temperature continues to steadily increase, and the maximum seen during the whole course of the disease is attained during the hot stage which immediately follows the rigors. "This condition is followed by profuse cold perspirations. The perspirations which accompany this disease are most profuse, like those of advanced phthisis. They never precede the rigors, but may occur independently of them. They are either continuous in their duration, or exhibit more or less distinct exacerbations. They are occasionally accompanied by sudamina, and they do not abate with the use of any known remedy.... Occasionally perspiration is scanty; but before death a cold clammy sweat and a tawny discoloration of the skin occur."

Besides the sudamina there are frequently observed on the skin vesicles, pustules, and boils, purpuric patches, and various discolorations. There is frequently observed to arise in the neighborhood of the wound a reddish erythematous blush, which soon extends to the whole limb, and commonly begins to disappear in the early part of the second week. This recently occurred to a patient under my care, and was speedily followed by an abscess of the knee-joint. The wound was situated at the hip-joint, {975} and the first change in the color of the integument took place around its lips. The redness extended rapidly downward until it covered the foot, and even the toes; but the extension upward was slight, not much above the nates, on which there was situated at the time a bed-sore. It observed the same order in passing off as in coming on--i.e. where it first made its appearance it first disappeared. The superficial veins leading from the wound were inflamed and cord-like. This condition of the integument and the abscess of the knee-joint were followed by diarrhoea, on which medicines had no beneficial effect. It continued, with occasional vomiting, until the death of the patient.

The pulse in pyæmia may be nearly normal as regards frequency, while at other times very rapid. It has been remarked in some cases that the pulse seldom rose above 90 per minute until near death. The pulse, although only moderately accelerated at the commencement of the disease, always becomes more rapid, quick, feeble, and irregular toward the termination of the unfavorable cases, while in cases of recovery it returns gradually to the normal standard.

In all cases in which the blood has been examined during the progress of pyæmia the examiners have agreed in regard to its extreme coagulability, the diminution of the number of red corpuscles, and the increase of the granular spherical bodies. The red corpuscles, even in the earlier stages of the disease, show evident indications of disintegrating; and these become more and more marked as the disease progresses, while there is a steady increase in the number of pus- or possibly of white blood-corpuscles. Epistaxis occasionally occurs, and also venous oozing from the wound.

The condition of the tongue in pyæmia may be regarded as an important symptom, indicating the state of the alimentary canal--not, however, during the prodromal stage, but after the disease has progressed a few days. It is then observed that the tongue has become peculiarly smooth, dry, and often excessively red. This smoothness is caused by the collapse of the papillæ, and the dryness by a diminished secretion. The organ now frequently appears as if covered with a thin layer of collodion which had been caused to dry on the surface, so as to present a glazed look. Again, the tongue may be covered with brown crusts and the teeth with sordes. These brown crusts and sordes are usually seen in advanced cases, following the first condition described. Much importance is attached to these brown crusts by many experienced surgeons, and although there may be very marked improvement in all other symptoms, still they insist on a very guarded prognosis until the tongue has assumed a healthy appearance. Aphthæ on various parts of the mouth and pharynx are frequently present in the more chronic cases, but are usually absent in acute cases. Herpes of the lips sometimes occurs in the commencement of the disease.

Vomiting is comparatively rare, but there is, even in the early stages, a complete failure of the appetite, with great thirst. Singultus is rarely present in genuine pyæmia, but frequently so in septicæmia, and occasionally in septo-pyæmia. Diarrhoea is not so frequent or the stools so copious in pyæmia as in septicæmia. Billroth observed in one hundred and eighty cases of pyæmia thirty-two cases of diarrhoea. It is impossible to determine whether those cases in which the diarrhoea {976} occurred were pure or mixed pyæmia. The stools are often of a pappy consistence, and passed involuntarily in bed. There are, however, severe cases of pyæmia with high fever, and accompanied by obstinate constipation.

Examination of the heart may, in rare cases, show the existence of pericarditis, although usually the only indications of disease are the too feeble sounds. Auscultation and percussion of the lungs may yield unsatisfactory results when the metastatic abscesses are small and scattered, for the same reason as in miliary tuberculosis. The large deposits in the lungs are by these means readily determined. There may be a sensation of suffocation, the pneumonic sputa, the friction sound of pleurisy, or the signs of pleuritic effusion; and the existence of these symptoms or signs would naturally aid in the diagnosis of metastatic abscesses.

Enlargement of the liver and spleen may be determined before death, and in connection with other symptoms would aid in diagnosing deposits in these organs.

The urine in the first stage of this disease is scanty, high-colored, contains a large amount of salts, and is of a high specific gravity. Epithelial, fibrinous, and blood casts, and also albumen, are occasionally found in it during the course of the disease. Billroth mentions a case in which there was complete suppression, with uræmia.

In many cases of pyæmia suppuration of the joints, one after another, takes place with great rapidity and with comparatively little pain, but occasionally some swelling, redness, etc. are present. In most cases these suppurations are easily diagnosed. Instead of suppuration taking place in the joints, there are cases in which it occurs in the cellular tissue; and I have recently seen a case where abscess after abscess formed with such rapidity that within a single week the patient was literally covered with abscesses from the crown of his head to the soles of his feet.

Delirium generally exists during some stage of the disease, more frequently the last, and is then mild in its character, although active delirium has been observed in the first stage. Patients are low-spirited and very apprehensive of death. The face at the beginning of the attack may be flushed or pallid, but toward the end it always becomes careworn and haggard. The breath occasionally has a sweetish or purulent odor.

The changes in the wound are in some cases very marked, even in the first stage of the disease. The suppuration, which has been previously free and healthy, may be suddenly checked, the wound becoming dry. The discharge, if it continues, becomes scanty, thin, ichorous, or greenish. The granulations, if previously healthy, may soon slough. These changes may not always appear in the first stage, but should they not then take place they may be expected later in the disease.

SYMPTOMS OF SEPTICÆMIA.--These are commonly developed within twenty-four hours after the receipt of an injury or the performance of a surgical operation, and they may be sketched as follows: Frequent pulse; tongue, lips, and throat dry; skin hot and the temperature of the body high. The patient replies accurately to questions, but with some hesitation. He is much inclined to sleep, has entirely failed to take nourishment, drinks frequently when aroused from his lethargic condition, and has vomited everything taken into his stomach since the receipt of the injury or the performance of the operation. If {977} the dressings are now removed from the wound, the foul odor of putrefaction greets the attendants. In cases of amputation-wounds considerable discoloration of the flaps may be observed, the edges being blackened. Above these blackened edges the integument is reddened and slightly oedematous. The wound having been closed with sutures, which are now removed, there escapes a few drachms--possibly ounces--of highly offensive fluid, the decomposed remains of blood, etc. A further examination of the flaps on their inner surfaces show that their capillary circulation has ceased. The tissues, instead of presenting a life-like appearance, are now of a very dark color and occasionally mottled with dull grayish spots, although the movements of the ligature at the point where it embraces the femoral artery, for example, show that the blood still rushes against the artificial boundary.

Let us now leave our patient, without further comment, for the next forty-eight hours, when we will resume the examination. We now find the same dryness of the mouth that was previously noticed; the pulse is more frequent, and has become very feeble; he complains of much thirst, has vomited frequently, and has taken very little nourishment, and that only at the earnest solicitations of the attendants. The temperature is higher than at the former examination, and has been steadily increasing; in the morning it is lower, however, than in the evening of the same day. The patient is lethargic, and is suffering with a profuse diarrhoea. The odor of the stools is highly offensive; they are properly described as rice-water evacuations. The abdomen is tympanitic; the body bathed in perspiration; the respirations rapid; the urine scanty, high-colored, and contains albumen. The examination of the stump shows that gangrene has extended rapidly, involving not only the flap, but a portion of the adjacent tissues. The stench arising from the wound is almost stifling. The decomposing fluids are continually forming. That portion of the thigh not already gangrenous is now very oedematous, and the integument covering it is much discolored, being of a dark, icteric, or reddened hue.