Dissertations on Inflammation, Vol. 2

by John Burns

Poultices are generally made of bread and milk boiled together, so as to form a thick kind of paste, to which is added, so much olive oil as will preserve it from hardening quickly[23]. These ought to be applied, either of the same temperature with the inflamed part, or hotter, according to circumstances. When the inflammation seems to be naturally and quickly tending toward suppuration, it is, as has been already mentioned, by no means essential, that any application be made externally, in order to induce the suppurative action[24]; but still poultices are used, and, in many cases, accelerate the progress. In this case, the poultices should only be applied so hot as not to give any considerable sensation of heat, otherwise we increase the action too much, and too rapidly, and, if early employed, may even interrupt, or stop the incipient purulent action, renewing the inflammation, and perhaps making it terminate in partial gangrene. Poultices, then, should not be applied very hot at first, especially when the action seems to be such as to make us expect that it shall run its course without any assistance. But when the inflammatory action has been more tedious, and does not terminate in the suppurative one so soon, and so decidedly as we would wish, then poultices must be applied, with a different intention, being meant, not solely to prevent the action from sinking, as in the first case, but also to raise it, and make it brisker. The heat must therefore be greater, and such as to give a considerable sensation; and the poultices, instead of being changed only when they begin to grow hard[25], which is perhaps all that is necessary in the first case, must be renewed very frequently, in order to keep up the increased degree of heat, or the agent which supports the action, and accelerates its progress. They ought, in this case, to be taken off and warmed, or renewed almost every hour, at least when the action is tedious, that is to say, when they are most required. We are then not to lay down any certain degree of heat which is to be employed, nor fix any particular number of times at which the poultices must, in every instance, be changed, but regulate our practice entirely by the nature of each particular instance, taking the progress and degree of the action as our guide, in this respect, and interfering exactly in proportion to the necessity for interference. It may not, however, be improper to remark, that, cæteris paribus, the heat must be greater in proportion to the depth of the inflamed part below the skin; or, in other words, we must apply more heat, when we are obliged to act on a part not yet inflamed, than when we act directly on the inflamed part itself. When an abscess forms at a distance from the surface, the parts betwixt it and the surface gradually come, as was formerly mentioned, to assume the purulent action; and the sympathy of equilibrium, which naturally exists betwixt the surface and the parts below, gives way to the sympathy of association[26], the parts coming, by degrees, to perform one uniform action together, which spreads from within to without. When we apply heat to the surface, at this place, we, by continuance, likewise induce the sympathy of association, and the increased action spreads and operates on the disease; but there is this difference, that the action of the heat spreads from without to within, and thus accelerates the progress of the suppurative action.

When the suppurative action has existed a certain time, we find, that it gradually extends itself to the skin, purulent matter being formed, instead of organic particles; on which account, the cavity enlarges, and the covering becomes daily thinner. At last, the action reaches even to the cutis, which becomes white and flaccid, first at a point, and then to a greater extent[27]. When this happens, the thin covering is either torn by the pressure of the contained fluid, acted on by the surrounding parts, or acting by its own weight; or, if this does not take place, the suppurative action still proceeds going through the cutis, the organisation of which, like that of the parts below, is lost: The thin cuticle now rises up into a little blister, and then gives way. The matter runs gradually out, the sides collapse, and come nearer by degrees to each other, at the same time that the ulcerative action succeeds to the suppurative. The quantity of the discharge, therefore, daily lessens; the internal surface, or sides of the abscess, come in contact; and the granulations at the margin or circumference unite; those belonging to one side uniting with those of the other, and thus producing recovery by successive circles of reunion, which form rapidly, or more slowly, according to circumstances.

Such is the natural progress of an abscess; but it has been proposed, that it ought not to be allowed to follow this, but ought to be opened before it bursts spontaneously; and this opening has generally been desired to be pretty large, chiefly perhaps on the principle of allowing a free evacuation of the matter. Where abscesses are seated over cavities into which they may burst[28], instead of opening externally, there can be no doubt of the necessity of making an early evacuation; and, in these cases, we ought to open them before the skin becomes white; or, in other words, before the action reaches the surface; because, if the abscess be seated equally betwixt the skin and the cavity below, we may suppose, that, if it be extending itself in all directions, or toward the cavity[29], in the same proportion as outwardly, that the parts below will become almost irreparably diseased before it can reach the surface, and will give way afterwards[30], even although an opening be made externally. Where, from the confinement of the matter, it seems to be spreading, or diffusing itself, by its gravity, through the cellular substance, or among the muscles, it will likewise be necessary to open the abscess early; but, in this case, the abscess is unhealthy; for, were it otherwise, the matter would be confined by the circle of diseased organic matter thrown out during the inflammatory action, and which is only removed gradually. In this case, the suppurative action has extended itself laterally, and perhaps downward, more quickly than in health, and has not observed the same ratio, with regard to the extension toward the surface; the action, therefore, reaches parts which were not formerly inflamed (by the sympathia consociationis serpens), before the surface gives way; and, therefore, the matter spreads or diffuses itself; for, by the spreading of the action, the confining barrier is removed, and the matter mechanically extends itself. This is an unhealthy abscess, and the action is of the phagedenic nature. Opening the abscess will not always stop this morbid action; but, by removing the matter, it will lessen the chance of diffusion. We must, however, continue the free evacuation, and place the member in a proper posture; because, if the action continue, the matter which still is formed will lodge, and form sinuses.

In healthy abscesses, where we do not apprehend any detriment to the neighbouring parts, the question comes to be, whether opening them will accelerate the cure? Perhaps much of the diversity of opinion on this subject, has arisen from not attending to the condition of the abscess which we have been managing, and thus we apply the prognosis and treatment of one kind of abscess to different ones. When an abscess has been formed slowly, and runs its course rather tediously, we may suppose, that the action shall continue for a considerable time without being converted into the ulcerative one; and, therefore, the abscess shall remain long without healing. In this case, a free incision, or the irritation of a foreign body, may excite the ulcerative action, and thus accelerate the cure; for these abscesses have come to approach toward the nature of common encysted tumors, and require the same treatment. But, where abscesses are running their progress with due celerity, and the action is proceeding through its proper course, there is not the same cause for interference. If, in this case, we open them before the action has gained the surface, we derive no benefit; because the action still proceeds, and the same events and circumstances take place as if we had allowed it to burst. If we make a large aperture, when the abscess is ready to burst, we, by the irritation, interfere with the process which was going on, and delay the cure. The admission of the air to the abscess, owing to the free exposure, is one cause of this delay; for it changes the nature of the purulent action, and, if the ulcerative action takes place, frequently renders it unhealthy; the consequence of which, if the abscess be large, or situated in vital parts, is hectic. We likewise, in large abscesses, by the sudden evacuation of the matter, and removal of the distension, sink the action of the parts, and make covery more tedious[31]. When the abscess, then, is healthy, and the action strong, it will be more proper to allow it to follow its natural course, and burst spontaneously, than open it, by a large incision, or by the introduction of a seton: If we do open it, the orifice should not at first be large, but should just comprehend the diseased or whitened surface.

Sometimes, after an abscess has burst, or been opened, it continues in a progressive state of amendment for some time, and then becomes stationary, continuing to discharge matter without healing. This either takes place from the whole surface, or from a particular part of it, forming a sinus, the treatment of which will afterwards be mentioned, being the same with those which succeed abscesses which are originally unhealthy.

After an abscess bursts, the proper application is a warm poultice[32], which should be continued in general as long as there is any stool, or hard margin; that is to say, until the increased quantity of diseased organic particles, which were formed during the inflammation, be absorbed, and the vessels at that part have either assumed the suppurative or natural action. After this, the orifice ought to be covered with a slip of lint, and moderate pressure applied over the surface of the abscess[33], by which the sides are kept in constant contact, and reunion is accelerated. Good diet is also necessary, for we thus increase the powers of recovery, or keep up a proper action, and renew the vital principle, the quantity of which has been lessened during the inflammation, both by the continuance of a state of overaction, and by the remedies which are employed to diminish the action; for a state of real and permanent weakness is thus induced.

It sometimes happens, that suppuration takes place very slowly, and the action seems to be performed with little vigour. In this case, if the abscess be allowed to burst of itself, we both lose time, and are often, in the end, disappointed in a cure, the healing process not taking place. It is therefore useful, in these cases, to have recourse to other agents besides heat. If the pain be trifling, and the suppuration be what may be called chronic, or approaching to it, we will perhaps succeed, by applying gentle pressure on the abscess, by means of a thin roller, and laying a warm poultice over this. But, when this fails to increase the action, we ought to pass a seton, by which we evacuate the matter, and keep up the subsequent action to a degree sufficient for producing recovery. In doing this, however, it is necessary to attend to the state of the tumor; because, if, in every instance, we pass it from the highest to the lowest part, we shall sometimes make the part give way in a third place. If, for instance, the abscess be much thinner at the apex than elsewhere, or, if the action have made considerable progress toward the surface, then the stimulus of the action increases the performance of the natural process which was going on, and the action continues to extend itself until the part gives way. In these cases, then, we ought to pass the seton from the thin part to the lowest part; and this, in general, will, from the sympathy of association, be sufficient to excite the action of the whole internal surface.

When we resolve to use the seton, the following is the easiest method of introducing it: Make a puncture with a lancet either into the upper, or the thinnest, and most prominent part of the tumor, according to circumstances; and, into this puncture, introduce, using the lancet as a directer, a probe, having a piece of tape passed through its eye. The lancet is then to be withdrawn, and the probe pushed down to the under part of the abscess, where its point will be felt under the skin. A small incision is here to be made upon the knob of the probe, which is next to be passed through, and the tape drawn after it. The matter is then to be slowly pressed out; the tape is to be folded; and the abscess bound up with a compress and roller, so as to make moderate pressure upon it. Next day, the dressings are to be removed, and a clean piece of the tape drawn through, after which, pressure is again to be applied.

The size of the tape, the time which the seton ought to be employed, and the degree of pressure to be used, must be regulated by backwardness of the action, and the imperfection of the healing process.