Although the sounds of the heart and movements of the fœtus are unequivocal proofs of pregnancy, which may be heard at a very early period, still it must, in some degree, remain uncertain at this time, how far their absence can be looked upon as a proof of its non-existence. Under such circumstances, the examinations require to be conducted with the greatest possible care, and to be repeated at favourable opportunities, until no doubt as to the correctness of their results can any longer exist.
The soft cushiony feel of the cervix uteri is a change produced by pregnancy, which, in our opinion, has not received that attention which it deserves; as far as we are able to judge, this condition of the cervix is peculiar to pregnancy, and exists very shortly after conception. We occasionally meet with a soft flaccid state of the os and cervix uteri in certain diseases; but the feel which this communicates to the finger is very different to that above-mentioned, which resembles more the elastic inflated condition of the nipple during pregnancy, than any thing to which we can compare it.
Ballottement. At the beginning of the seventh month we shall be able to feel the head of the fœtus upon examination per vaginam. If we direct our finger against the uterus, midway between the os uteri and symphysis pubis, and suddenly exert a slight degree of pressure, we shall become sensible of having struck against something hard within the cavity of the uterus; upon repeating the experiment immediately, we shall probably not feel it, the fœtus having risen in the liquor amnii to the upper parts of the uterus; but if hold our finger still for a few moments, it will, by this time, have again descended, and we shall again feel it; at other times, when the fœtus is larger and heavier, the head will rest like a light ball, on the tip of the finger, from which circumstance it has received the name of ballottement by the French authors.
Motion of the child. The sensation of the child’s movements to the mother is a symptom of very little value, and is liable to mislead the practitioner if he place much reliance upon it; for the passage of the flatus along the bowels, or little spasmodic flickerings of the abdominal muscles, will produce a very similar sensation, and will even completely deceive a patient who has been the mother of several children; but when they become perceptible to the experienced hand of the practitioner, this may also be looked upon as a certain indication that pregnancy exists. The fœtal movements can seldom be felt distinctly until the beginning of the seventh month, and even then it requires some caution before we can venture upon a positive opinion. Their activity varies considerably in different cases; in some their nature is almost immediately evident; whereas, in others they are so few and feeble, as to make it very difficult to decide. It has been recommended to put the head in cold water previous to applying it upon the abdomen, as, by this means, a considerable shock is produced which excites these movements more distinctly. We cannot say that we have found this proceeding of any use, since, by this means, the abdominal muscles are rendered so irritable as frequently to obstruct the examination considerably: it is rather desirable to have them in as perfect a state of repose as possible, in order that no movement of the fœtus, however slight, should escape our notice. It is in cases of abdominal enlargement from disease; that this means of diagnosis is occasionally very difficult, and where men, even of great experience, have been led to form a very erroneous opinion. The celebrated Peter Franck has related a case of this sort which occurred to himself, where the patient was supposed pregnant, and where he imagined that he had felt the motions of the child: she died shortly afterwards, and the examination of the body showed it to have been a case of ascites complicated with hydatids. Dr. Dewees has given a still more remarkable case of a similar error having occurred to himself. A young lady had her menses suppressed for several months; the abdomen swelled very much, the breasts became enlarged, she had nausea and vomiting in the morning, and other indications of pregnancy; “examining the abdomen carefully, I found it,” says Dr. Dewees, “considerably distended; there was a circumscribed tumour within it, which I was very certain was an enlarged uterus. While conducting this examination I thought I distinctly perceived the motions of a fœtus. The case proved to be one of accumulation of menstrual fluid in the uterus.” (Dewees’s Essays on several Subjects connected with Midwifery, p. 337-8.)
In reviewing what has now been stated respecting the diagnosis of pregnancy, it will be observed that we have enumerated four symptoms, which must be looked upon as perfectly diagnostic of this condition, and in the accuracy and certainty of which we may place the fullest confidence: two may be recognised at an early period by means of auscultation, viz. the sounds produced by the movements of the fœtus and by the pulsations of its heart; the two others are not appreciable until a later period, and are afforded by manual examination, viz. the being able to feel the head of the fœtus per vaginam, and its movements through the abdominal parietes. The next in point of value after these are the changes in the os and cervix uteri, those connected with the formation of the areola in the breasts, and, at a somewhat later period, the sound of the uterine circulation, changes, which, although they cannot separately be entirely depended upon, are nevertheless symptoms of very great importance in the diagnosis of pregnancy.
Two other signs of pregnancy have also been mentioned, viz. the appearance of a peculiar deposite in the urine as described by M. Nauche, or rather by Savonarola (Montgomery, op. cit. p. 157.,) and the purple or violet appearance of the mucous membrane lining the vagina and os externum, as described by Professor Kluge of the Charité at Berlin, and by M. M. Jacquemin, Parent Duchatelet, &c. of Paris. With regard to the first, which is an old popular symptom of pregnancy, there is too much variety in the appearances of the urine, depending on general health, diet, temperature, &c., to enable us to place much confidence in any change of this sort. “I have myself tried it,” says Dr. Montgomery, “in several instances, and the result of my trials has been this:—In some instances no opinion could be formed as to whether the peculiar deposite existed or not, on account of the deep colour and turbid condition of the urine; but in the cases in which the fluid was clear, and pregnancy existing, the peculiar deposite was observed in every instance. Its appearance would be best described by saying that it looks as if a little milk had been thrown into the urine, and having sunk through it had partly reached the bottom, while a part remained suspended and floating through the lower part of the fluid in the form of a whitish semi-transparent filmy cloud.” (Op cit. p. 157.)[44]
The purple colour of the vaginal entrance appears, from the extensive experience of the above-mentioned authors, to be a pretty constant change produced by the state of pregnancy; it probably occurs at a very early period. How far a similar tinge is produced by the state of uterine congestion immediately before a menstrual period, we are unable to say; at any rate, the character of the examination itself must ever be sufficient to preclude its being practised in this country.
The diagnosis of pregnancy is a subject well worthy of the student’s most serious attention; for he will of course be liable, when in practice, to be called upon to give his evidence before a court of justice under circumstances when the responsibility must ever be of the most serious and not unfrequently of the most fearful nature, the more so as the old custom of impanelling a jury of “twelve discreet matrons” to determine whether the woman be quick with child has fallen deservedly into disrepute. He should lose no opportunity of making himself familiar with the various symptoms of pregnancy above enumerated, and of so practising the different senses of hearing, touch, and sight, as instantly and certainly to detect their presence.
Numerous cases are on record, where a false diagnosis in women convicted of capital offences, has led to most lamentable results, and where dissection of the body after death has shown that she was pregnant. Dr. Evory Kennedy has recorded an interesting case of this sort which occurred at Norwich in 1833, when a pregnant woman was on the point of being executed through the ignorance of a female jury. (E. Kennedy’s Observations on Obstetric Auscultation, &c., p. 197.) We may also mention a dreadful case of this nature which occurred to the celebrated Baudelocque at Paris, during the horrors of the French revolution.[45] A young French countess was imprisoned during the revolution, being suspected of carrying on a treasonable correspondence with her husband, an emigrant. She was condemned, but declared herself pregnant; two of the best midwives in Paris were ordered to examine her, and they declared that she was not pregnant. She was accordingly guillotined, and her body taken to the school of anatomy, where it was opened by Baudelocque, who found twins in the fifth month of pregnancy.
Equally important is it (and perhaps in some respects even more so) to determine the absence of pregnancy in cases where it has been supposed to exist. In many instances the character and happiness of the individual must depend upon the judgment which the practitioner pronounces; and, painful as will be the task of communicating an opinion which implies guilt and loss of honour, how infinitely revolting and inexcusable must that step be considered, which turns out to have been founded upon an incorrect diagnosis. Hence the importance of separating those symptoms of pregnancy which may be considered certain, and therefore trustworthy, from the crowd of others, which, although collectively they may warrant a suspicion, yet never can justify a decision that pregnancy exists, more especially in cases where so much is at stake. No two symptoms have led more frequently to this cruel error, and therefore to the most unjust suspicions, than the cessation of the menses with swelling of the abdomen, and yet from how many different causes may they arise besides that of pregnancy? Putting even the impulse of common feeling aside, we would ask how a practitioner can dare recklessly to incur the responsibility of injuring a woman’s character by hazarding an opinion which involves so much, and is based upon symptoms which, by themselves, prove so little? Whether he exercise his profession in town or country, cases of doubtful pregnancy will constantly come under his notice. We cannot, therefore, too strongly urge the importance of ascertaining how many of the certain symptoms are present, before we allow ourselves to be influenced by those which are uncertain. In speaking of the enlargement of the abdomen as a sign of pregnancy which is extremely equivocal, Dr. Dewees well observes, “But little reliance can be placed upon this circumstance alone, or even when combined with several others; for I have had the pleasure in several instances of doing away an injurious and cruel suspicion, to which this enlargement had given rise. Within a short time, I relieved an anxious and tender mother from an almost heart-breaking apprehension for the condition of an only and beautiful daughter on whom suspicion had fallen, though not quite fifteen years of age: this case, it must be confessed, combined several circumstances which rendered it one of great doubt, and, without having had recourse to the most careful and minute examination, might readily have embarrassed a young practitioner. This lady’s case was submitted to a medical gentleman, who, from its history and the feel of the abdomen, pronounced it to be a case of pregnancy, and advised the sorrow-stricken mother to send her daughter immediately to the country as the best mode of concealing her shame. Not willing to yield to the opinion of her physician (a young man,) and moved by the positive denials of her agonized child, the mother consulted me in this case. The menses had ceased, the abdomen had gradually swelled, the stomach was much affected, especially in the morning, and the breasts were a little enlarged. On examination it proved to be a case of enlarged spleen.” (Dewees, on the Diseases of Females, p. 178.)