Treatise on Poisons by Sir Robert Christison
2. The second variety of poisoning with mercury comprehends the cases,
1258 words | Chapter 117
which begin, like the former, with irritation in the alimentary canal,
but in which the symptoms of what is called mercurial erethysm gradually
supervene. In fatal cases of this description death sometimes arises
from the primary action of the poison, exactly as in the previous
variety; but in other instances it is owing to general disturbance of
the constitution, or the local devastation, brought on by the secondary
effects.
It is unnecessary to describe here the several forms of mercurial
erethysm which may thus be developed, because they will immediately be
considered under the third variety of mercurial poisoning. It is
sufficient to state in passing that the leading affection is
inflammation of the organs in and adjoining the mouth, and more
particularly of the salivary glands.
But it may be right to endeavour in the present place to fix the period
of the poisoning at which these secondary affections may and usually do
commence. This cannot be done so satisfactorily as might be wished,
because the cases already published which I have been able to examine do
not form a large enough induction. Among the recorded cases I have
hitherto seen, salivation has never been retarded beyond the third
day;[910] but in an instance of suicide by corrosive sublimate which
happened in the Castle of Edinburgh in 1826, and which was communicated
to me by the late Dr. Shortt, the salivation did not begin till the
fourth. Salivation seldom comes on sooner than the beginning of the
second;[911] and the most usual date of its commencement is towards the
close of the second day. There is little doubt that it may be retarded
till a period considerably later than I have yet found recorded. It is
doubtful whether true mercurial salivation ever begins much sooner than
after the first twenty-four hours. Occasionally, however, corrosive
sublimate produces salivation of a different kind, which has been
mistaken for the specific variety caused by mercury. Thus in a paper on
the cure of gonorrhœa by corrosive sublimate in single large doses,
communicated by Mr. Addington of West Bromwich to Dr. Beddoes, it is
stated that a grain and a half, taken at once in half an ounce of
rectified spirit, causes immediately “a great burning in the throat and
stomach, and quickly afterwards a copious salivation, lasting between an
hour and a half and two hours, and amounting frequently to more than a
quart.”[912] These facts have been appealed to by authors in medical
jurisprudence as proving the rapid production of mercurial salivation.
But the effect produced is not the specific ptyalism of mercury; for its
brief duration is scarcely consistent with this supposition. And
farther, the author goes on to observe, that, if the dose be taken on
going to bed, the latter part of the night is passed quietly, and no
inconvenience is felt afterwards, even when the dose is taken five or
six times at intervals of three or four days. The effects here observed
is a sympathetic phenomenon depending on the topical action of the
poison. And such, I have no doubt, has been the nature of the salivation
in several cases of poisoning with corrosive sublimate, which have been
supposed to be at variance with the general rule, that this affection
does not begin till about twenty-four hours have elapsed. Such seems to
have been the nature of the salivation in a case published by Dr.
Perry,[913] that of a girl who was attacked with swelling of the cheeks
and lower lip, burning in the throat, flushed face, feeble pulse, and
cold, clammy extremities after swallowing corrosive sublimate, and who
had a copious flow of saliva in an hour and a half; for there is no
mention made of fetor, and the girl was well enough to leave the
hospital in a few days,—which could scarcely happen if she had been
affected with ptyalism from the constitutional action of mercury.—In
like manner Dr. Alexander Wood has related a case, fatal in fourteen
days, in which the patient said salivation came on in seven hours.[914]
But, notwithstanding Dr. Wood’s argument in support of the patient’s
statement,—for he did not see him till nine days after the poison was
taken,—there is no satisfactory evidence that the salivation was the
true constitutional salivation of mercury, and not simply the result of
its topical action, which seems to have been very severe.—Farther, in an
instance related by Dr. H. Anderson of Belfast, where salivation
appeared to him to begin in nineteen hours, it seems not improbable that
he mistook for mercurial ptyalism the common salivation arising from
inability to swallow on account of sore throat; for this patient too was
quite convalescent in three days.[915]—Mr. Alfred Taylor alludes to a
case in Guy’s Hospital of salivation occurring in four hours; but so
briefly, that its true influence on the present question cannot be
judged of.[916]—On the whole, then, although it is clear that ptyalism
of one kind or another may occur very soon after corrosive sublimate is
swallowed, it remains a matter of doubt, whether the true, specific
ptyalism, depending on the constitutional action of the poison begins
sooner than after an interval of above twenty-four hours.
As to the total duration of this variety in fatal cases, I have found an
instance fatal on the fourth day, salivation having begun on the
second;[917] and Orfila quotes a case from Degner, in which the
gastro-enteritic symptoms were succeeded by ptyalism about the same
period, and which proved fatal in fifteen days.[918] These periods,
however, probably do not form the extremes; for in such cases as the
former death is the consequence of the primary affection, and may
therefore ensue immediately after the secondary stage has begun to
develope itself; and when death arises from profuse salivation, as in
Degner’s patient, or from the ravages committed by ulceration and
gangrene, it may be delayed almost as long as in cases of the third
variety of mercurial poisoning, in which there is no precursory stage of
inflammation in the alimentary canal.
Death may arise, not only from the primary action of the poison, or from
the exhaustion caused by mercurial erethysm, but likewise from
incidental occurrences. Thus, in Dr. Alexander Wood’s case, referred to
above, death arose directly from sudden profuse hemorrhage from the
bowels, to the amount of six pounds.
The present variety of poisoning with corrosive sublimate may be
concluded with the heads of an excellent example related in the Medical
and Physical Journal. The patient, a stout young girl, swallowed soon
after supper a drachm of corrosive sublimate dissolved in beer, and in a
few minutes she was found on her knees in great torture. All the primary
symptoms of this kind of poisoning were present in their most violent
form,—burning in the stomach, extending towards the throat and mouth,
followed in no long time by violent vomiting of a matter at first
mucous, afterwards bilious and bloody; by purging of a brownish, fetid
fluid; suppression of urine and much tenderness of the urethra and
bladder; small, contracted, frequent pulse, anxious countenance, and
considerable stupor, interrupted frequently by fits of increased pain.
All these symptoms were developed in four hours. Subsequently the pain
in the stomach became much easier, but that in the throat much worse. At
length in the course of the second day, the teeth became loose, the gums
tender, the saliva more abundant than natural; profuse ptyalism and
great fetor of the breath ensued, and the patient expired towards the
close of the fourth day.[919]
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