Part 13 (1/2)

So long as the os uteri is not fully dilated, the patient is not involuntarily compelled to strain and bear down: hence it is important to caution patients, more especially primiparae, not to be induced by an ignorant nurse or friend to exert themselves improperly during the first stage of labour, for not only is the process of dilatation considerably impeded, and much exhaustion produced, but frequently severe febrile or inflammatory action excited, which may lead to serious results after labour. All attempts to accelerate the course of a natural labour, especially the first stage, either on the part of the patient by premature straining, or on the part of the pract.i.tioner by attempts to dilate the os uteri and pa.s.sages, or by giving her stimuli, &c. cannot be too strictly forbidden. It is a mode of practice which has long since been strongly condemned by the highest authorities in midwifery, except in Scotland, and which may very easily lead to most mischievous results. Quick rapid labours are by no means desirable, for they are seldom safe; nor is it possible to limit this or that stage (especially the first) to any given duration of time.

No conscientious pract.i.tioner, who has clear and enlarged views of the process and mechanism of natural labour, would feel himself justified in interfering with its course, merely because some portion of it has extended beyond a certain fixed period; but would rather guide his conduct by the habit and strength of the individual, and by the effects which the labour has upon her. We have before stated, that no two labours are alike; we may also add, that no two individuals are similarly affected by the same degree and duration of labour, nor indeed are any two labours exactly alike in the same person: hence it will be evident, that what to one patient would prove a protracted and exhausting labour, to another would be nothing more than a perfectly regular labour, natural both in its character and progress. Among other injurious effects which premature efforts on the part of the patient will have, is, that the membranes are liable to give way too soon--this is by all means to be avoided, for nothing is so likely to render the first stage protracted as the occurrence of this accident; the course of the labour frequently undergoes an immediate change; the pains lose their regular and effective character; the os uteri remains thin, tense, and unyielding, and the process of dilatation is greatly r.e.t.a.r.ded.

_Prognosis as to the duration of labour._ There are few subjects upon which an accoucheur is so frequently importuned, or about which it is so difficult to give a decided opinion, as the probable duration of labour.

It is natural enough that both she and her friends should be anxious to know how long this process of suffering is likely to last: nothing, however, is more hazardous than a prognosis in these cases; and we would warn our junior brethren to be cautious how they commit themselves by venturing an opinion, which the result of the labour may prove to have been founded upon guess-work or ignorance. The character of the labour during the second stage, is frequently very different to that of the first, so that the mode in which the labour commences is by no means a criterion for its latter part. A labour which has commenced briskly and regularly, and with every promise of a rapid progress and termination, frequently becomes exceedingly lingering during the second stage, so that the expelling powers may, perhaps, even fail altogether in making the head pa.s.s through the os externum; whereas, on the other hand, a labour, the first stage of which has been slow and protracted, frequently experiences a complete alteration of character, and advances with a degree of quickness and energy, which could scarcely have been antic.i.p.ated from the manner in which it commenced. In primiparae, especially, it is particularly difficult to foretell, with any thing like certainty, the duration of labour: hence it is, that unguarded a.s.sertions in this respect are not only liable to disappoint the patient, but destroy her confidence in the pract.i.tioner.

_Wigand's views._ The celebrated Wigand of Hamburgh considered that the form of the v.a.g.i.n.a would frequently furnish the means of a pretty certain prognosis, as to the duration of labour: thus, if it were wide and yielding throughout its whole length, the labour would be quick, both at its beginning and termination; if, on the other hand, it were small, rigid, and contracted throughout, the labour might be expected to be of a very opposite character. If on examination the v.a.g.i.n.a is found roomy and well dilated at its upper part, but contracted and rigid near the os externum, the labour will be probably quick and easy during the first half, but slow and difficult afterwards; on the contrary, where the os externum is yielding and wide, but the upper portion of the v.a.g.i.n.a narrow, the labour may be expected to be slow at first, but to be brisk and active afterwards. We have already stated, that the course of labour varies in every possible way; in some cases the same peculiar character of labour shows itself through two or three successive generations: hence it has been observed, that very tedious or very violent and rapid labours sometimes seems to be hereditary; the mother, daughters, and grand-daughters, being all remarkable for their lingering or rapid labours.

_Diet during labour._ The diet of the patient during labour should be simple and unirritating; if every thing is going on naturally and briskly, some gruel or tea, with or without a little biscuit or bread and b.u.t.ter, will be quite sufficient; but if the process is becoming tedious and exhausting, some beef-tea, broth, or any other mild nourishment of this sort will be required to support the strength.

During the first stage of labour there is no need for the pract.i.tioner to be constantly in the room, nor even during the early part of the second, unless the pains are very violent and protrusive; for, by taking frequent opportunities of quitting the patient for a few minutes, she is left more free from restraint, and the presence of the pract.i.tioner becomes less irksome when it is really necessary; whereas, if he continues at the bed-side, she is justified in expecting that the labour must be advancing rapidly to demand so unremitting an attendance, and, therefore, becomes disappointed and impatient to find that his presence has been of so little use to her. The conversation should be light and cheerful, and every means taken to encourage her and keep up her spirits.

_Supporting the perineum._ As the head approaches the os externum our attention must be directed to giving the perineum such a degree of support, as shall secure it from any serious degree of laceration during its pa.s.sage. The greatest danger of ruptured perineum is in primiparae, for the soft parts never having been subjected to such a degree of dilatation before, do not yield so readily as in multiparae. The anterior margin of the perineum, called _fraenulum_, is, we believe almost invariably ruptured in every first case; but the laceration ought not to extend farther. The more gradual the advance of the head is through the os externum, the better will be the dilatation of the soft parts: hence therefore, when the pains are violent, and the head is thrust with great force against the perineum, it will be desirable to restrain it in some degree, until the parts shall have had sufficient time to yield; on the other hand, where the pains are more gradual, the perineum and os externum may receive the whole dilating force of the head, and every succeeding pain will show that a progressive advance is taking place.

The increasing thinness of the perineum itself, and the fraenulum becoming tense during the height of a pain, may be looked upon as warnings that the expulsion of the head is not far distant, and now the support of the hand will be needed to prevent laceration; for this purpose the position on the left side is peculiarly convenient, besides having the additional advantage of relaxing the external parts more completely. If the pains be violent, and the impulse to strain very considerable, we must desire the patient to lie as pa.s.sive as she can, and do her best not to bear down, for otherwise the head is sometimes driven through the os externum with a single effort, and the mischief done in spite of all our care.

The support of the perineum has been variously directed by different authors; we prefer using the left hand, because then we have the right at liberty for any manipulations which may be necessary, such as examining if the cord be round the child's neck, &c. &c. It is awkward at first, because it requires the hand to be considerably twisted, and makes the wrist ache a good deal; but a very little practice soon conquers this slight difficulty, and the superiority of the mode will then be apparent.

As our object is not merely to support the perineum, but to direct the head as much forwards under the pubic arch as possible, in order that the anterior portions of the os externum should undergo their share of dilatation, and thus in some measure spare the perineum, the chief pressure should be applied near to the sphincter ani, gradually diminis.h.i.+ng it up to the fraenulum perinei in front: for this purpose the left hand protected by a napkin (partly for the sake of cleanliness and partly for the purpose of having a firmer hold upon the parts, and preventing it slipping) should now be applied with the palm in the vicinity of the sphincter ani, so that the tips of the fingers should project somewhat beyond the fraenulum; the whole should be laid as flat and close to the part as possible. In order that we may be sure of the hand being applied exactly along the raphe of the perineum, we should guide it by the examining finger of the right hand, bearing in mind, that when we place this against the posterior margin of the os externum, and bring the middle finger of the left hand in contact with it, we shall hold the left hand in the desired direction.

It is desirable also to hold the examining finger of the right hand against the fraenulum perinei when a pain comes on, because then we know exactly when the tension of the perineum is becoming such as to endanger its integrity, and when the head is about to pa.s.s out. Until this moment the fraenulum is seldom on the stretch, although the rest of the perineum is: hence we need not apply our support until now, and thus give the parts the full benefit of the dilating force, which the head exerts upon them, until the very last instant. To relax them still farther, the patient's knees ought not to be separated by a pillow or cus.h.i.+on placed between them, as is usually done, although it must be confessed that in some cases she is relieved by it.

In applying the left hand to support the perineum, it should be placed somewhat more backward than the spot which we intend to support: for by this means we are enabled to push the soft parts somewhat forwards, and thus relax them. By this means, also, we not only direct the head against the other parts of the os externum but avoid the danger of its perforating the perineum. When the moment of greatest distension arrives, the process cannot be too slow; we must therefore desire the patient not to bear down, and endeavour, if possible, to make the head remain in the state of _crowning_ until the next pain comes on: the os externum having been held for some moments at its utmost dilatation, permits the head to pa.s.s with greater ease and safety. As the globe of the head pa.s.ses forwards and emerges through the os externum, we feel the posterior portions of the perineum become soft and lax, while the forehead, followed by the face, and lastly the chin glide over the anterior margin of it.

The pa.s.sage of the head is not the only moment of danger to the perineum, for laceration is even still more liable to be produced during the expulsion of the shoulders; any slight rupture of the anterior edge is now apt to be converted into a considerable laceration, unless the support be continued until the thorax be expelled. We have already stated that the fraenulum perinei is generally torn through in the first labour; but the laceration ought not, if possible, to extend farther, because serious injury may be produced either to the v.a.g.i.n.a, or even to the sphincter r.e.c.t.u.m. To say, however, that laceration of the perineum need never happen, would be preposterous; because cases every now and then occur, where, from the contracted and unyielding state of the os externum, and from the size of the child, it is nearly impossible that the perineum can escape without injury; fortunately, although considerable lacerations are by no means uncommon, they are seldom observed to extend into the sphincter ani, the direction of the rent being usually to one side. Under the ordinary circ.u.mstances of perineal laceration, little more than mere attention to cleanliness is required; for the parts contract so astonis.h.i.+ngly after labour, that what was a wide rent of an inch and a half long, in a couple of days will be scarcely more than two or three lines in length. Rest, great cleanliness, and gentle-relaxed bowels, const.i.tute the chief treatment.

_Treatment of perineal laceration._ Where, however, the laceration extends into the r.e.c.t.u.m, the case becomes exceedingly troublesome and difficult to cure, and the patient is liable to be rendered a miserable object for life; for the action of the sphincter being entirely destroyed, she is unable to retain faeces or flatus in the r.e.c.t.u.m; besides which, from the injury to the posterior wall of the v.a.g.i.n.a, prolapsus uteri is an almost certain consequence. In these cases the slightest movement of the thighs upon each other alters the position of the lips of the wound, and thus tears it open afresh, so that at length the edges of the wound become callous and refuse to heal. A great deal in these cases depends upon the patience and good conduct of the patient herself; for if she have the resolution to lie perfectly still for at least a week, she will have every chance of a perfect cure. If there be much swelling of the edges, and a disposition to slough, a warm poultice of chamomile flowers should be applied, and the bowels kept in a nearly liquid state by gentle and repeated doses of salines, in order to prevent distension of the r.e.c.t.u.m when the evacuation is pa.s.sing; she should preserve the supine posture, and have her knees confined together by a piece of tape, as is done with patients after the operation of lithotomy. Straps of adhesive plaster are seldom or never of any use, but if the rent be very severe a suture or two may be required. The great fault in applying these means for bringing the edges of the wound together is the attempting to unite them throughout their whole length; for by so doing the tension of the parts is increased, and therefore there is less disposition to unite; and even if we succeed in effecting complete union of the whole wound, the perineum is so contracted and unyielding from the cicatrisation, that it can scarcely escape a repet.i.tion of the injury in succeeding labours. It is, therefore, much better that we should content ourselves with uniting merely the posterior half of the laceration; the parts heal much more readily, and the os externum is left of a sufficient size to escape all danger of laceration on future occasions.

Where the edges have become callous and refused to unite, they require to be pared and brought together again; this, however, does not always succeed, and the case becomes very difficult and protracted: under these circ.u.mstances, the treatment adopted by Dr. Dieffenbach, of Berlin, is well worthy of attention. Having pared off the callous edges of the wound, he brings them into the closest opposition by transfixing them with needles in several places, as is done for the operation of hare-lip; and in order to isolate the wound as much as possible from the surrounding parts, and prevent any tension, he makes a free incision through the integuments, parallel with the wound, at a little distance from it, and nearly of the same length; by this means, every cause which might tend to separate the edges is removed; whilst the parallel cuts, being fresh incised wounds, soon close by granulation.[68]

It sometimes, although rarely, happens that the perineum, instead of being torn from before backwards, is perforated through its centre by the head, so that the child is not born through the os externum, but through a lacerated opening in the body of the perineum. This accident may arise from a variety of circ.u.mstances: the direction of the pelvic outlet may be faulty, or the inclined plane formed by the lower part of the sacrum, by the sacro-sciatic ligaments, &c. may be insufficient to guide the head forwards under the pubic arch; or the perineum may be unusually broad; in which cases the power of the uterus being directed against the centre of it, the head becomes enveloped in a bag of protruded perineum; and if the pains are violent, and the head not properly supported, it at length bursts its way through the centre without even injuring the fraenulum. The treatment of this form of ruptured perineum is the same as that of the more common species; the bowels must be kept open, and a fomentation of chamomile flowers applied to the wound, which, from the gradual contraction of the surrounding parts after labour, diminishes remarkably, so that in the course of a short time it will have entirely or nearly closed.[69]

Besides the above-mentioned advantages in supporting the perineum, we may mention another which is not generally noticed, and which is sometimes of considerable service. In cases where the head has completely descended upon the perineum, and begins to protrude somewhat through the os externum, the pains occasionally fail at this moment, the labour becomes very lingering, while the advance of the head and state of the parts show that two or three active pains would bring the child into the world; firm pressure applied at the lower end of the sacrum, in a direction forwards, materially adds to the effect of each pain in bringing the head through the os externum, and seems also to excite the patient to make a more powerful effort with the abdominal muscles. On several occasions we have thus a.s.sisted the expulsion of the head, when otherwise the labour would have been very protracted, or would have even required the forceps to disengage it. Madame La Chappelle is the only authority in midwifery, as far as we know, that has noticed this fact.

_Cord round the child's neck._ As soon as the head is born, we must examine whether the cord be twisted round the child's neck; and here the advantage of supporting the perineum with the left hand becomes evident: it is ready to support the shoulders when they begin to pa.s.s, while the right hand is at liberty to perform any manipulations which may be necessary. If it be important to support the head during its pa.s.sage over the perineum, still more so will it be to support the shoulders; for if a small laceration has already been produced, it is invariably converted into a wide rent at this moment, if great care be not taken: indeed, we are justified in saying that most of the cases of severe perineal rupture are produced by the shoulders, not by the head.

_Pa.s.sage of the shoulders._ If the pains cease for a time, or the child be large, the shoulders do not pa.s.s immediately: in this position the face swells and grows purple from the pressure upon the neck, although it does not necessarily result from the cord being round it; if, however, we find that this is the case, we can in most instances loosen it somewhat by the finger, and as the shoulders advance, slip it first over one and then the other: we must recollect that the shoulder, which is forwards, pa.s.ses out first, and that, therefore, we must slip the cord over it first.

It is seldom necessary to a.s.sist the shoulders by applying any extractive force to the head, for in the course of a minute or two the uterus generally resumes its activity and expels it: on the other hand, when the shoulders pa.s.s through the os externum, the right hand should be in readiness to prevent the body of the child from being born too rapidly: the uterus can scarcely be emptied of its contents too gradually, for by this means it contracts equably, powerfully, and permanently, and throws off the placenta without difficulty; whereas, if suddenly evacuated, it frequently becomes powerless for a time, or if contraction does take place, it is so irregular and incomplete as to endanger partial separation, retention of the placenta, and haemorrhage.[70] If, however, the cord be twisted exceedingly tight round the child's neck, and imbedded so deeply into the skin, as to render it impossible to push the coil over the shoulder, it may become necessary to divide it in order to let the child pa.s.s, in which case the pract.i.tioner must seize the divided ends as well as he can, and apply a ligature the instant the child is born. We believe that this is rarely, if ever, necessary; for in proportion as the child advances, so does the fundus descend, and thus relieves, in some measure, the tension to which the cord is exposed. This subject, however, belongs rather to the third species of dystocia, to which we must therefore refer.

_Birth of the child and ligature of the cord._ As soon as the child is born, we must place it in such a position as will enable it to breathe with ease. The sudden exposure to the external air is generally sufficient to excite respiration; if not, a gentle pat on the nates, or blowing suddenly in the face, will usually succeed: if, however, the child still remains insensible, recourse must be had to those means which are recommended under the head of _Asphyxia neonatorum_. The cord should not be tied until it has ceased to beat, for unless the circulation be well established in its new course, the breathing is apt to stop, and the child relapse into insensibility: the cord should be tied about three inches distant from the umbilicus; it should be applied tightly, because otherwise it is apt to become loose, as the cord grows flaccid. In tying the ligature, one hand should be supported against the other to prevent giving the cord any jerk in case the ligature breaks; we are able also by this means to tie it more firmly.

The cord should be divided at some little distance from the ligature, so as to prevent all chance of its slipping off, and it should be done with a pair of blunt scissors, by which means the vessels of the cord are so bruised as to be rendered nearly impervious. There is no need to apply two ligatures; in fact it is better not, for, as Dr. Dewees justly observes, ”the evacuation from the open extremity of the cord will yield two or three ounces of blood, which favours the contraction of the uterus and expulsion of the placenta.” It has been recommended, in case of twins, to apply a second ligature, to prevent all chance of the second child bleeding through the cord of the first. There is, however, no connexion between the two placentae, although they usually form what appears to be one ma.s.s. We only know of one case where the umbilical arteries of one cord anastomosed with those of the other, an anormality of very rare occurrence: still, however, it is better to apply a second ligature upon the cord, where we find that twins are present, as a precaution: and also to prevent it being said, in case the second child is still-born, that it had died from no ligature having been applied upon the placental extremity of the cord. It has been questioned whether it was really necessary to tie the cord before separating the child from the mother, from the well known fact that nothing of the sort is required in animals; and that, in cases of rapid labour, where the child has been unexpectedly dashed upon the floor and the cord broken, no haemorrhage has resulted. This arises from the bruised and lacerated condition of the cord under these circ.u.mstances: animals not only bite the cord, but also draw it through their teeth several times, so as to contuse the vessels for a considerable extent; whereas, if it was merely divided with a sharp instrument, there is no doubt but that the new-born animal would quickly bleed to death.[71]

_Importance of ascertaining that the uterus is contracted._ As soon as the child is separated from its mother and removed, or even sooner, if this process has gone on slowly, we ascertain if the uterus has contracted: this we shall know by its feeling like a large hard ball behind the symphysis pubis: if there be one rule more important than another, it is this, for without it we cannot be certain of the patient's safety for a single minute: so long as we feel the fundus to be hard, we know that the uterus is contracting, and that it will expel the placenta quickly, and ensure the patient against haemorrhage; but if it be soft and relaxed, she cannot be considered safe even if their be no haemorrhage; for the placenta may have been separated, and may be lying across the os uteri, or the os uteri itself may be contracted, or blocked up with coagula, so as to prevent the blood from escaping; it therefore collects in the cavity of the uterus in large quant.i.ties, to the imminent danger of the patient.

Even where the uterus has contracted, the patient is not permanently safe, for it may again relax and grow soft, and haemorrhage come on.

_Management of the placenta._ The placenta sometimes follows the child immediately, and occasionally is expelled by the same pain; usually, however, a few minutes intervene, during which time the uterus remains more or less in a state of inaction; it then begins to contract, and the dull and peculiar pains which characterize the separation of the placenta are now felt. The interval after the birth of the child varies considerably, and depends in many cases on the degree of rapidity with which the uterus has been emptied: hence in some cases we feel the fundus hard almost immediately, whereas, in others some considerable period elapses before it resumes its state of activity, a period which, if any separation of the placenta has already taken place, will be attended with the greatest danger. The occurrence of pains indicates fresh contractions, and therefore we should now examine to ascertain if the placenta has been detached. As a general rule it may be stated, that if we can reach the insertion of the cord with our finger we may presume that the placenta is ready to be expelled; if not, that it is still partially or wholly attached to the uterus. So long as this latter is the case, the less we meddle with the cord the better, for by pulling at it we only excite the os uteri to contract, and thus seriously impede its removal.

Where some time has elapsed without any symptoms of contraction coming on, we may excite the uterus by circular friction of the abdomen, fanning the face, or by sprinkling a little water upon it, &c.: if, however, the uterus is hard and yet the placenta not within reach, we may pull slightly at the cord, pressing it at the same time back with the fore-finger into the hollow of the sacrum; we thus bring it down in the direction of the pelvic axis, and generally succeed in moving it into the v.a.g.i.n.a. No violent effort should be made, as this would probably tear it off from its insertion into the placenta, but, by keeping a gentle pressure upon it, the placenta will slowly pa.s.s through the os uteri, and then come away without farther difficulty. Following the axis of the v.a.g.i.n.a, we now guide it downwards and forwards; and when it approaches the os externum, it should be seized with the finger and thumb, and rotated several times: the membranes are thus twisted into a rope, and are less liable to be torn in separating from the uterus. The uterus being now completely emptied, contracts into a hard ball of about the size of a child's head. If, however (whether before or after the expulsion of the placenta) the uterus grows soft and swells, if the patient becomes pale and restless, and complains of faintness, sickness, load at the praecordia, darkness before the eyes, &c. we may be sure that haemorrhage is going on. We refer to the chapter upon uterine haemorrhage for the measures to be adopted.