Part 46

Avenzoar, upon the whole, nearly agrees with Rhases, but expresses himself undecided with regard to the 20th and 21st days. His authority must also be allowed to be of great weight upon this subject, if we may believe Averrhoes, that he lived to the age of one hundred and thirty-five, and practised medicine from his fortieth year.

To the first class of critical days, according to Haly Abbas, belong the 7th and 14th; to the second, the 11th and 20th; to the third, the 4th, 17th, and 21st; and to the fourth, the 3d, 5th, 9th, and 18th.

Alsaharavius gives a similar list to Haly’s. He inclines rather to the 20th than the 21st day.

Galen, and most of the ancient authorities, believed that the critical days are influenced by the moon. Actuarius, in particular, attributes much to the influence of the sun and moon in influencing the course of fevers.

Prosper Alpinus gives a correct summary of the ancient doctrines respecting the critical days. (De præs. Vita et Morte ægrot. vi, 4.)

SECT. VIII.—THAT CRITICAL SYMPTOMS APPEARING IN THE COMMENCEMENT ARE UNFAVORABLE.

The signs of concoction are never unfavorable, for concoction always take place when nature prevails, and therefore the signs of it are always favorable. But the critical signs may sometimes appear unfavorably, owing to the crisis partaking of a double character (as was said with regard to the critical days), being sometimes favorable and sometimes unfavorable. They ought not therefore to appear at the commencement, nor during the increase of the disease, but after its acme, at which time nature is prevailing over the disease.

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COMMENTARY. The opinion here delivered is derived originally from Galen, but is maintained also by Oribasius, and the other authorities. It requires no comment.

SECT. IX.—HOW TO JUDGE BEFOREHAND OF A FUTURE CRISIS.

If the paroxysms increase in violence, occur earlier, and become much stronger; if they invade on the third day; and if symptoms of concoction appear in the urine, alvine discharges, and sputa, the disease will certainly soon come to a crisis. If the attack is slow, and if the paroxysms occur at the same hour every day, you may expect that the crisis will not take place till after a longer time. And those fevers which make their attack with rigors cannot terminate until the rigor abate; for until that occur it is impossible for the disease to have attained its acme, and therefore much less is it reasonable to expect that it is upon the decline.

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COMMENTARY. This Section is copied from Oribasius. (Synops. vi, 3.) The subject is fully treated of by Galen (de Crisibus.) Rhases describes very accurately the symptoms of an approaching crisis, such as, confusion of the understanding, vertigo, headach, inquietude, involuntary flow of tears, pain of the stomach, &c. He warns the inexperienced not to be alarmed at the violence of the precursory symptoms. (x, 26.) Avicenna, Averrhoes, Haly Abbas, and Alsaharavius, though they treat of the subject very fully, supply no original views.

See an ample account of the ancient opinions in Prosper Alpinus. (De Præs. Vita et Morte ægrot. vi.)

SECT. X.—HOW TO RECOGNIZE A PRESENT CRISIS.

Restlessness precedes every crisis, and if the crisis be to take place by day, it will occur by night; or if the crisis be to take place during the night, it will occur by day; and then certain symptoms supervene, such as headach not previously occurring, sympathetic pain of the neck, retraction of the hypochondrium, sudden difficulty of breathing, and other dangerous symptoms which did not manifest themselves before then take place. And if, when these occur, the pulse, instead of sinking, is increased in magnitude and becomes stronger, and the critical day approaches, and if it be one of the favorable, you may not only anticipate a crisis, but also a good one. And be not then alarmed if you see the patient become delirious and disturbed, for these are indications of the humours being carried upwards; in like manner as certain other symptoms indicate their being determined downwards, such as pain of the belly, gripes about the navel, pain in the loins, borborygmi, and other similar symptoms, when they occur. In addition to these, if the patient was accustomed to have a hemorrhoidal discharge, and if the period of it be at hand, and in like manner with respect to the menstrual discharge (if the patient be a woman), it is not unlikely that the crisis may take place by such an evacuation. And a critical sweat is recognized by a precursory moistness of the skin (especially if occurring upon one of the days called indicatory), and by openness of the pores. From these you may recognize crises by evacuations upwards; for, in addition to the aforesaid, you ought to examine the face of the patients, and whether there be palpitation in any part, or throbbing of the temporal arteries; or if the cheek, nose, or eye be redder than usual, you ought the rather to anticipate the coming crisis. But if they shed tears involuntarily, or fancy that they see sparks of light, and constantly carry their hands to their nose as if to rub it, then indeed you may see not only an approaching but a present flow of blood; for when they rub it once or twice the blood straightway breaks forth. Pungent pain at the stomach, and trembling of the under-lip often indicate a crisis by vomiting. These considerations are sufficient, but to them may be joined the age and constitution of the patient, as strengthening the anticipation; to which may be added, the season of the year and the present constitution. For if the patient be a child, or otherwise by nature warm and full of blood, you may still more form this anticipation; or if formerly, when in health or disease, as we remarked before, an evacuation of blood appeared, this circumstance alone may be sufficient to make you expect a hemorrhagy. And if the season of the year be summer, or, if not summer, if the present state of the weather be hot, and if the patient had often experienced a crisis at that season by hemorrhage, if the body be plethoric, if there is retention of the customary evacuations, all these things ought to strengthen your expectations. In like manner you ought to judge of the other evacuations; or, if none of these symptoms should appear, but if there be uneasiness occurring on one of the critical days after the 20th; or if, when the disease is at its acme, pains should seize certain joints, or near the ears, or in other parts; or if not pains, but local sweats should occur unceasingly in any part of the body, then indeed you may expect a crisis to take place by abscess, and in that part where the sweats, pains, or swelling occurred.

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COMMENTARY. This is taken with very slight alterations from Galen (Therap. ad Glauc. i: see also, de Crisibus, iii, 2.) The critical evacuations enumerated by Galen are, those by vomiting, by the belly, by urine, by sweats, by hemorrhage from the nose, by hemorrhoids, by the menses in women, by abscesses of the parotid glands, and by determination to the knees, feet, or some other parts not vital. He says there are three ways in which a fever may terminate favorably, namely, by an evacuation, by an imperfect crisis without an evacuation, and by resolution, that is to say, when the febrile symptoms go off gradually. There are likewise three unfortunate terminations; for the patient may die suddenly with much agitation, or in consequence of a metastasis, or he may be slowly wasted by a marasmus.

Averrhoes enumerates the same kinds of critical evacuation as Galen, and otherwise treats of them very judiciously. (Collig. iv, 39.) Avicenna gives a long account of all the circumstances attending the crisis, but he copies closely from Galen and Hippocrates. (iv, 2, 1.) Haly Abbas, in like manner, is sensible and correct, but borrows from the Greeks. (Theor. x, 10.) The account given by Rhases is excellent, but it differs little from our author’s. (Ad Mansor. x, 27.) In his ‘Continens,’ he gives a full exposition of the Galenic doctrines, with his own Commentaries. He states, that a crisis may take place in six ways: by hemorrhage at the nose, by an alvine evacuation, by vomiting, by a discharge of urine, by a sweat, or by an aposteme. (xxxi.)

SECT. XI.—HOW TO DETERMINE WHETHER A PAST CRISIS BE FAVORABLE.

If a proper evacuation takes place after the concoction, and the fever is resolved by the critical evacuation; if the patient is freed from all other symptoms; if his colour has improved in proportion to the evacuation; if his pulse has become more regular, and his strength better in rising out of bed; and, what is the most salutary symptom of all, if these are accompanied by repose of the constitution, this may be pronounced to be the best possible crisis. If any of these be wanting, the goodness of the crisis will diminish proportionally to the force of the diminution.

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COMMENTARY. This requires no Commentary. See, however, more fully, Galen and Rhases (l. c.)

SECT. XII.—ON THE PULSE, FROM THE WORKS OF GALEN.

The pulse is a movement of the heart and arteries, taking place by a diastole and systole. Its object is twofold; for, by the diastole, which is, as it were, an unfolding and expansion of the artery, the cold air enters, ventilating and resuscitating the animal vigour, and hence the formation of the vital spirits; and by the systole, which is, as it were, a falling down and contraction of the circumference of the artery towards the centre, the evacuation of the fuliginous superfluities is effected. The arteries themselves are oblong hollow vessels like the veins, but consist of two coats, in order to fit them for the afore-mentioned motion, and because they have to contain blood and spirits. They arise from the heart, and are distributed to all parts of the body; and, therefore, all the arteries pulsate in a similar manner, and like the heart, so that from one of them you may judge concerning all the rest. But the movement of all cannot be equally well observed; for those which are situated in parts not fleshy may be more conveniently felt, whereas those that are in fleshy parts are more indistinct. Nor is any one more conveniently situated for being felt than the one at the wrist. The first kind of pulses is in regard to the time of their motion, as observed in systole and diastole. Its differences are, the quick, slow, and moderate; because every body which is moved must be moved quickly, slowly, or intermediately, as to time; that is quick which is moved over a great distance in a short time; that is slow which is moved over a short distance in a long time; and that is moderate which is intermediate as to motion. The second kind of pulses is in regard to the extent of the diastole. For, since every body has three dimensions, length, breadth, and depth, and an artery is a body, it follows, that an artery must have these dimensions. When, therefore, an animal is in its natural state, you will find its arteries dilated moderately every way; but when not in its natural state, its dilatation will be deficient, or exceed according to some one of its dimensions. In calculating this, you must remember the natural state of the pulse; and if it is found to exceed in breadth, you must call it broad; if in length, long; and if in depth, high or deep. It is clear that the opposites to these, or those that are deficient, are to be named the narrow, the short, and the low. And with regard to those which are altered from the natural state in all their dimensions, that which is every way diminished is called small, and that which is every way increased, great. The third kind of pulses is with regard to the tone of the vital strength. The varieties are three, the strong, the weak, and the moderate. The strong is that which strikes the finger of the physician strongly, and the weak, feebly and faintly; while the moderate is intermediate between them, and is held by some to be the natural one; for that the pulse is rendered stronger by passion and baths, not being naturally so. In reply to which, Galen contends that a pulse rendered stronger by non-natural causes soon undergoes a change; and that, therefore, a strong pulse, which does not readily change, may be natural and moderate. The fourth kind is in regard to the consistence of the instrument, I mean the body of the artery. In this respect there are three differences; for the artery is either harder than natural, and is called a hard pulse; or softer, and is called a soft, or intermediate, and is called in this respect moderate. The fifth kind is in regard to the contents of the artery; and their differences are, the full, the empty, and the moderate, since every vessel must be full, empty, or moderately full of liquids. A full pulse, then, as Archigenes defines it, is one which indicates an artery that is completely full, and the impression of which is, that it is distended with fluids; and an empty one conveys an impression as if its contents were full of bubbles of air, so that the finger, when pressed upon it, seems to fall into an empty space. These five kinds of pulses regard one motion of the artery. And since the quality of the heat in the heart may be more developed than usual in the artery, some have hence reckoned a sixth kind of pulses. Of the other kinds, whether they are in regard to one or more pulsations, they derive their character either from the time of rest, or the rhythm, or their equality and inequality, or their regularity and irregularity. The kind, then, in regard to the time of rest, which is the seventh in order, is divided into the dense, the rare, and the moderate. And, since an artery has a double motion, composed of two opposite movements, it must of necessity have two seasons of rest: the one after the diastole before the systole, the other after the systole before the diastole, which to most people appears imperceptible; and, therefore, the interval of rest between two motions has been chosen. When, therefore, there is a long interval of rest, the pulse is called rare; when short, dense; and when intermediate, moderate. The eighth kind is in respect to rhythm. Rhythm, then, in general, is the ratio and proportion of one time to another. In regard to the pulse, it is, according to some, the ratio of the time of motion to the time of rest, as of the systole and diastole, to the intermediate time of rest; but, according to others, it is the ratio of a time of motion and rest to another time of motion and rest, or of motion to motion.

Of rhythm, then, there are two varieties, the rhythmic and the arhythmic. Of the arhythmic, there is a threefold difference: first, when there is a slight departure from rhythm; second, when there is a greater; and third, when there is no rhythm at all. Thus, for example; in a child, if his pulse has the rhythm of childhood, it is called its proper rhythm; if it has that of an adult, it is said to be an improper rhythm; or if it preserve no ratio at all, it is said to be devoid of rhythm.

The ninth kind of pulses is found in all the other kinds already mentioned; namely, that which regards equality and inequality, which may be remarked either in one pulse, or in many, which last is called the systematic, of which we must speak first, as being more clear. An equal pulse, then, is that which is alike in order, as regards magnitude, strength, frequency, and certain other, or indeed all its other, characters. The unequal pulse is that which is unlike in order. For, if all are alike, as, for example, all deficient in magnitude, such a pulse is called equal. But if the first, second, and third appear alike, but the fourth unlike, it is clear that such a pulse is unequal as to magnitude. Of this kind are the intermitting and the intercurrent. For not only after one or more great pulsations may one smaller occur; but sometimes this motion is wholly lost, and one pulsation is said to be wanting. The other kind, the intercurrent, is the opposite to this; for when we are expecting an interval of rest, a supernumerary pulsation, as it were, occurs. When the second is a little smaller than the first, and the third than the second, and the fourth than the third in like manner, and so onwards, such pulses are called sharp-tailed or myuri, deriving their names from figures terminating in a sharp point. Such as are altogether diminished, and never cease from this state, terminate in a total loss of motion, and are called failing or fainting myuri. There are two varieties in respect to those which fail, for some of them persevere in that state of smallness in which they terminated, whilst others attain again their original magnitude, or less or more, and these are called recurrent myuri. Pulses also are called myuri, from their inequality in regard to one pulsation, concerning which we will speak presently. And this is the nature of that inequality of pulse, called systematic. But it takes place with regard to one pulse, or one part of an artery, or more, as perhaps with regard to motion, for the inequality is observed on one part of the artery, when the motion of the artery upon the finger begins one way and terminates another, beginning quicker, and terminating slower, or reversely. This happens in a threefold manner, the motion either remaining constant, or being interrupted, or recurring and beating double, as it were. If, then, remaining constant and uninterrupted, it should change from quickness to slowness, or conversely, such a pulse is said to be, and is of unequal velocity. But if, after being interrupted by an interval of rest, it again appear quicker, it is called the goat-leap or dorcadissans, the term being derived from the animal dorcas, which, in jumping aloft, stops in the air, and then, unexpectedly, takes another and a swifter spring than the former. But if after the diastole it recur, and before a complete systole take place, strike the finger a second time, such a pulse is called a reverberating one, or dicrotos, from its beating twice. You may see such a thing take place upon a stithy, when a hammer, swung by the hand, first strikes the stithy, and afterwards, recoiling from the reaction of the stithy, strikes of itself a second or third time. And not only may an inequality in the time of motion take place as to one pulsation in one part of an artery, but also in regard to the strength of the power; not so, however, in regard to the extent of dilatation (for it is impossible that the same pulse in the same place should be great and small at the same time), nor in regard to the other kinds of pulses. But in different places different parts of an artery may exhibit a double inequality in one pulsation. For the motion may continue constant, and be swifter at one finger and slower at another; or it may intermit, and one finger may perceive it, and another not. And also, in regard to the extent of the diastole, the same inequality becomes apparent in different places. Of this kind are the myuri, diminishing once and again at one pulsation; for, if at the inner finger the pulse should be great and swelled up, but under the external at the thumb of the patient it appear smaller, such a pulse is called myurus, from its resemblance to the tail of a mouse; or meiurus, from its being diminished like a tail. But if the pulse appear great, and swelled under the middle finger, but smaller on each side, Archigenes called this impulse innuens et circumnuens, i.e. the declining, and the declining on both hands, wishing to mark the smallness of the diastole, with the declination, as it were, of the two extremities; for these parts do not appear as if they were cut short, but as if they were bent in, and a little contracted on each side, and hence the pulse is curtailed (myurus) on both sides.

And when the inequality as to magnitude takes place at different times, such pulses become undulatory and vermicular. And if irregularity of position be joined to them, they are called spasmodic and vibratory. Let us begin with the undulatory, in which the whole artery is not dilated at the same time, according to the same inequality, but this part of it first, that second, that third, and that fourth, the motion continuing constant like the swelling of the waves. And some have the wave carried straight forward, some obliquely; some have a sufficient altitude in a short expansion as to length, and some conversely; some have a broad, and some a narrow, and they have the like inequality in regard to quickness and strength. When the undulatory is wholly diminished in size, it is called the vermicular, which resembles the motion of a worm. As the undulatory pulse, when it goes on diminishing, terminates in the vermicular, so in like manner does the vermicular in the ant-like, or formicans, when, most of its motions being lost, it terminates in one, and it a very small motion. It is called formicans from its resemblance to the ant (formica), on account of its smallness and kind of motion. The ant-like pulse (called formicans) is very small, there being none smaller than it; and, in like manner, it is of all others the most indistinct and dense, but is not quick, as Archigenes supposed. Nearly allied to it is the hectic. For as there is a hectic fever, so is there also a hectic pulse, which undergoes little or no variation, but remains always alike contracted as it first began, and never expanding, the whole habit being turned into disease. The spasmodic pulses appear as if they were dragged, stretched, and drawn by the extremities, conveying the sensation of a stretched cord. But no such thing takes place in the vibratory; for in them the dilatation is greater, as if different parts of the artery were carried upwards at one and the same time. They may be resembled to darts, which, when thrown with force, are carried along with a vibratory motion. The pulse is serrated when part of the artery seems to be dilated and part not; the artery itself also appearing to be harder than natural. This pulse has some of the characters of the vibratory, and is quick and dense, but not always great. In addition to those mentioned, there is a tenth kind of pulses arising from inequality, namely, that with regard to regularity and irregularity. The unequal pulses being divided into those which are alike as to periods, and those which are wholly unlike, the regular and irregular are formed according to each of these divisions; from the equality of periods the regular is formed, and from the entire inequality the irregular. The equal pulse is also always regular (since consequently we call it alike); but the unequal is not altogether irregular; for, supposing it to have no equality, and yet to preserve a certain period, such, for example, as to extent of diastole, if there are two great and one small, then again two great and one small, and so on successively, such a pulse would be called anomalous, that is to say, unequal, but regular. But, if it not only had no equality, but likewise no order in its inequality, such a pulse would be not only unequal, but also irregular, and in like manner with regard to the other kinds. Of the irregular, some are altogether so, observing no period whatever; others are indeed regular as to periods, but, having no continued order, they may in this respect be called irregular, but in so far they observe a certain period regularly, they being regulated as to their periods. As if, for example, there were two great and two small, then three great and three small, and four great and an equal number small; and, returning again, two great and two small, three great and as many small, and so on in like manner. It is to be remarked that, of all the other opposite kinds, there is one intermediate between the two extremes, but that there is none between the equal and unequal, and the regular and irregular, unless you choose to call the one which is regular as to periods the medium between the regular and irregular. And the intermediate pulses of all the other kinds are the natural, except that which relates to strength and weakness, as we showed. But, in those we have been describing, the equal alone is the natural, and all the others are not natural, namely, the unequal, the regular, and the irregular. These are all the kinds of pulses and their generic differences. Some add two others to these, the one in regard to the position of the artery, according as it seems to be carried upwards or downwards, to the right or to the left, and the other in regard to the times of expansion. But these we treated of along with the undulatory and vibratory. And we, for the sake of brevity, have only delivered the simple varieties; but, from what has been said, one may easily connect them, and discover those which arise from their combinations.