The value of the hypodermic syringe in treating congestive chills must never be lost sight of. The suspension, or even reversal, of normal systemic currents is made evident by the serous vomiting and purging attending congestion of the abdominal cavity. Medicine placed in the stomach under these circumstances is virtually thrown away.
The term comatose is applied to certain cases of pernicious malarial fever because they present coma as a marked symptom. To appreciate the propriety of this classification, it must be well understood that the coma present is not due to cerebral congestion. Further than this one restriction upon the application of the word there is in its employment no declaration of any pathological views respecting the cases it is intended to define. While, therefore, the term is unquestionably liable to criticism, I suppose its use may still be admitted, provided it is accompanied by a satisfactorily explicit account of the symptoms and probable pathological conditions of the cases included under its caption.
There is a sharp line of distinction between the symptoms and conjectural pathology of comatose cases and of those of the congestive form of pernicious fever. The following notes of cases will sufficiently establish this statement:
C. L., fisherman, aged forty-four, brought into Ward 20, Charity Hospital, in an insensible condition, November 18, 1875. Temperature at time of admission 104.8°, pulse 120, respiration 40; able to swallow liquids placed far back in his mouth. Ordered scruple ij of quinia in solution, ten grains to be given every fourth hour. Nov. 19th, patient has taken and retained all the quinia ordered; is perspiring profusely; temperature 97.8°, pulse 88; more conscious; takes food and water when offered him. Ordered blue mass, comp. extr. colocynth., aa gr. v, to be taken at once. To drink through the day bitartrate potass. oz. j, dissolved in lemonade, until bowels are moved. Evening temperature 99.3°. Nov. 20th, temperature 98°; patient placed under convalescent treatment; discharged from hospital Nov. 29th.
Another comatose patient was admitted to Ward 19 on the 29th of October, entirely insensible. He was treated by large doses of quinia in solution per rectum, and by calomel gr. xx, sodii bicarb. gr. v, placed upon base of tongue, and caused to be swallowed by a tablespoonful of water trickled over the powder. As the patient began to recover it was noticed that his right arm was paralyzed. A history subsequently obtained showed that the patient was an engineer, and had been engaged in making some land surveys in a swampy portion of the State of Louisiana, and had been often obliged to wade or swim across the bayous and to sleep at night in the open air, sometimes without any protection from the weather. He had previously enjoyed good health, and was altogether unable to account for the paralysis of his arm. During convalescence he was treated with iron, strychnia, and preparations of cinchona, and by cold douches and frictions to the paralyzed arm. Convalescence was slow, but he was discharged, completely recovered, on November 20th.
In typical cases the differential diagnosis between the congestive form and the comatose is made without difficulty. In a congestive chill the surface is cold, blue, or livid, the pupils dilated, and the pulse generally slower than natural and irregular. In the comatose form the surface is preternaturally warm, of a muddy, semi-jaundiced hue, and the pulse and temperature both indicate the feverish rather than the algid state.
The subjects of attacks of the comatose form of malarial fever are for the most part persons who, having contracted attacks of fever in malarial regions, continue to reside in the same localities and yet use no proper medication, either for cure or for prophylaxis. We have in these cases accumulations of secondary blood-poisons quite sufficient to greatly impede brain-function, and the additional doses of the primary toxic agent must exercise more or less influence in determining the phenomena of the attacks.
Very little need be said of treatment, beyond a recommendation of the courses pursued in the cases cited. Hypodermic medication must be resorted to when necessary. Efforts to nourish the patient must never be relaxed. One must see many of these cases before he can realize how often they recover, from conditions apparently utterly hopeless, when promptly treated and properly nourished.
The hemorrhagic form of pernicious malarial fever can scarcely be regarded as an original type. Malaria is not a hemorrhage-inducing poison. Indeed, it may be positively stated that malaria never establishes the hemorrhagic diathesis as a primary effect; and it is only by changes effected in the human economy by its prolonged influence that it appears to become capable of doing so. The most experienced and accurate observers of malarial affections concur in the opinion that this rule is almost without exception.
The morbid conditions whose concurrence entails upon malarial fevers a tendency to hemorrhages may be classed together as follows: First. The blood-changes of chronic malarial toxæmia so alter the consistency of that fluid as to favor the occurrence of hemorrhage. Second. The long persistent states of malnutrition in chronic malarial cachexias produce textural weakening of the vascular walls and increased liability to their rupture. Third. There should be added to these one other factor, which is mainly operative during a malarial paroxysm—namely, the increased blood-pressure put upon the vascular walls by passive congestions.