Definition and various Forms of Disorder – Pathological Relations and Causes – Association with other Diseases – Symptoms, Physical Signs of – Diagnosis – Prognosis – Treatment – Cases.
GENTLEMEN : I propose to take up the Diseases of the Heart in the following order (1) Functional (2) Inflammatory. (3) Organic. This lecture will treat of Functional Disorders of the Heart.
A purely functional disorder of the heart is any disturbed action occurring independently of either inflammatory or organic affection. These affections may be attended by more or less functional disorder, but there are many cases where the latter are unattended by any lesion or inflammation.
In most cases, the disturbed action of the heart is evidently due to morbid conditions seated elsewhere, but it may be symptomatic of either blood-changes, or affections of the nervous system, or of both.
It must be borne in mind that disordered function of the heart, in cases of inflammatory or organic affections, involves the same morbid conditions which often exist independently of these affections.
The subject of functional disorder of the heart is of great practical importance, on account of the frequency of its occurrence, the anxiety which it occasions, and the liability of confounding it with organic disease.
The majority of persons who complain of symptoms referable to the heart, suffer from functional disease only. But the discrimination of functional from organic affections can only be made by one who is thoroughly acquainted with the subject. The great importance of a correct diagnosis is obvious, when we consider that structural lesions involve more or less danger, while functional disorder, although very distressing, very rarely, if ever, proves serious.
There are several varieties of functional disorder. In the mildest form the action of the heart is simply increased by transient exciting causes, such as mental emotions, unusual exertions, etc., but this excited action is only transient.
Persisting inordinate action is another form. The heart may act with regular rhythm, but with abnormal rapidity and force, not greatly influenced by exciting causes; and this action may continue for weeks and months. The pulse, in such cases, ranges from 120 to 130 per minute, and the patient is in a state of constant anxiety, fearing organic heart disease.
Paroxysms of irregular and tumultuous action is another form of this disorder. Such paroxysms often occur without any obvious exciting cause, and the patient is attacked suddenly with violent beating of the heart, with disturbed rhythm. A feeling of impending death is experienced, with great terror and anxiety, which increases the intensity of the paroxysm. The slightest motion increases the anxiety and palpitation. (Digitalis.)
The attacks may occur at short intervals, or only once in a few weeks; they may last but a few moments, or several hours. Such cases are frequently met with in hysterical women, and are accompanied by various attendant symptoms. Boullard calls this affection an “insanity of the heart,” but it has appeared to me to act more like a choreic affection, such as we observe in muscles elsewhere.
Another species of paroxysm is irregularity and intermissions, without increased force of the heart’s action; on the contrary, the action of the heart may be quite feeble. Such paroxysms inspire great terror. The patient feels as if the slightest movement would cause death, from stoppage of the heart’s motion, or from syncope. (Gelsemium.)
It must be remembered that some cases of mere intermittency are congenital, and are of no importance as a symptom.
In other cases the pulse may intermit, but not the heart’s action. This is termed a false intermission. The force of the ventricular contraction is not sufficient to produce a radical pulsation.
CAUSES AND PATHOLOGICAL RELATIONS OF FUNCTIONAL DISORDER OF THE HEART.
These may be enumerated as follows: plethora, anaemia, derangement of the nervous system, dyspepsia, and the gouty diathesis.
Plethora is that condition in which the blood is abnormally rich in red globules, and, perhaps, in excess as regards quantity. The heart becomes overtaxed and overstimulated, and becomes morbidly irritable. There is much violence of action without much disturbance of rhythm. Palpitation may be the first symptom that awakens the anxiety of the patient, and concentrates his attention on the heart. He becomes fearful of organic disease, and taxes the patience of his medical attendant to a high degree. Those who suffer most from this affection are men who leave the farm or workshop, and men of previously active business pursuits, who change their mode of life and become luxurious, indolent, or lead sedentary lives. Women who tend to obesity and live much indoors are liable to this form of heart disorder.
Anaemia, or an opposite condition to the above, is more frequently met with, and rarely occurs without more or less disturbance of the heart’s action. Women are more subject to this variety than men. Anaemia being produced by excessive loss of blood, or of any of the fluids of the body, the first cause may generally be located in some particular organ or tissue. It must be borne in mind that the heart disorder is not always proportionate to the anaemia. It may be slight in cases of marked anaemia, and severe when the condition is hardly appreciable.
With the anaemia, besides the functional heart disorder, we shall find coldness of the extremities, headache, neuralgia, melancholy, irritability of temper, etc. Anaemic patients, with heart symptoms, live in constant dread of organic disease, and fear of fatal results. If the physician trusts altogether to symptomatic phenomena, he may have the same fear of serious results in his patient, for in these cases palpitation is excited by the slightest exertion; dyspnoea is experienced, the countenance is morbid and occasionally dropsy sets in, which may be mistaken for the dropsy caused by organic disease.
Derangements of the nervous system may be a cause of functional disorder of the heart, without the presence of anaemia. Cases of hysterical palpitation come under this head, for hysteria often occurs without anaemia, but with plethora.
A condition of the nervous system favorable to functional disorder is said to be caused by masturbation and venereal excesses. Uterine disorders are a prolific cause. The excessive use of tobacco, green tea, and coffee often induce a condition giving rise to functional disorder of the heart.
Whatever may be the causes of this condition, mental depression is a constant attendant (in marked contrast to chronic pulmonary affection). The patient persists in believing that he has organic disease, inspite of our most earnest assurances. He watches the action of the heart with constant anxiety, and habitually counts his pulse, and feels for the beating of the heart, and lives in such a morbid state, mentally, that the condition of the heart is actually aggravated by his constant dread and apprehension.
Dyspepsia, in its various forms, tends directly to cause this disorder, but as many dyspeptic ailments proceed from derangement of the nervous system – and this often induced by mental distress or anxiety – it is often difficult to separate this cause from those gastric affections proceeding from indigestion or hepatic derangement.
Dyspeptic patients with heart disorder are equally prone to magnify it into a dangerous complaint. They watch the pulse and the beating of the heart, and are in dread of sudden death, such as they have heard of in organic disease. It is notorious that this morbid watching for heart-symptom, and the anxious expectorations of finding heart disease, is actually sufficient, in some cases, to produce the functional variety. The presence of gas in the stomach, even when dyspeptic symptoms are not present, often causes severe attacks of palpitation. In such cases, the expulsion of a quantity of wind by belching often puts an end to the distressing paroxysm.
The gouty diathesis gives a liability to functional derangement of the heart’s action. Attacks of palpitation occur in such persons before the joints are affected, and cease when tumefaction is present. The presence of an undue quantity of lithic acid in the blood is supposed to be a cause – acting aS an irritant to the nerves which control cardiac action.
Other causes of functional disorders have been noticed by clinical observes. It occurs during convalescence from fevers. Deformities of the chest seem to favor it. Young persons whose growth is rapid are liable to it. Excess in muscular exercise induces it. Soldiers in the late civil war were affected with it, probably caused by the excitement and muscular exhaustion incident to their life.
FROM WHENCE COMES CARDIAC INNERVATION?
This is an interesting question, both in its pathological and therapeutic relations. Barthez* * Traits de Therapeut., vol. 1, p.48, par Trousseau and Pidoux says we must make a distinction between the radical and the acting forces governing the heart. The former may be nearly exhausted, while the latter are in full play; and, vice versa, the latter may be but slightly manifested, while the former are powerful. The amount of radical forces represents a person’s capacity of vital resistance to disease and fatigue. The acting forces have their origin in the radical. In cases of functional disorder we have hyperaesthesia from debility, or a morbid stimulus may be reflected from the nervous centres on the cardiac nerves.
According to Bezold, the nervous centre of the cardiac movements furnishing three-fourths of the entire propulsive power of the heart, occupies the cervical region of the cord, including the medulla oblongata, and extends as low as the fourth dorsal vertebra. Its fibres run through the cervical spinal cord, and pass out between the seventh cervical and fifth dorsal vertebral, probably passing through the lower cervical and upper dorsal sympathetic ganglia, and proceeding to the heart.
The innervation of the heart is derived, in part, from the ganglionic or sympathetic system, and partly from the pneumogastric nerves. For its active force the heart is dependent on the cardiac ganglion and the plexus of nerves with which they are connected. The function of the pneumogastrics is to regulate its action. The latter presides especially over the rhythm of the heart’s movements. Morbific agencies giving rise to functional disorder may affect separately these two sources of the innervation of the heart. Most of the causes of functional disorder probably act primarily upon the nervous centres, but in some cases, as when the disorder depends on dyspepsia, or uterine irritation, the morbid influence is transmitted to the nervous centre, and reflected upon the heart. Very many cases of functional disorder of the heart are doubtless reflex in character. If we could decide, by accurate investigation, the particular nerves upon which medicines act pathogenetically, our knowledge of the curative powers of remedies would be much more certain.
PHYSICAL SIGNS OF FUNCTIONAL DISORDER.
Physical exploration by means of auscultation, percussion, and palpitation, is of immense value in functional disorder of the heart, as showing the absence of the signs of inflammatory and organic affections. The information which it affords is not less positive than if there were certain signs peculiar to functional disorder.
In our examination of the heart in cases of supposed functional disorder, we have to decide, first, as to the absence of abnormal phenomena denoting structural changes; and second, as to the presence of the normal phenomena denoting soundness of the organ.
By percussion we can ascertain that the heart is not enlarged, and, if not enlarged, that the disorder is quite certain to be functional. but we cannot, on the other hand, decide that the disorder is not functional because the heart is enlarged, for functional disorder may supervene upon, or coincide with enlargement.
Palpitation enables us to ascertain the force of the heart’s action. The movements and the irregular action are readily appreciated by the hand. We can discriminate between the increased and disturbed action due to morbid excitement, and the augmented power due to hypertrophy. The impulse in hypertrophy denotes strength rather than force; it is not quick and violent, but sluggish and strong; it does not give the sensation of a shock or blow, but it causes a gradual and strong heaving of the praecordia.
Palpitation also shows that in functional disorder not attended by structural disease, the point of apex-beat is in its normal situation; not elevated, as in pericarditis with effusion, nor lowered and carried to the left, as in cases of enlargement of the left ventricle.
Auscultation is important in two ways, first, by showing the absence of abnormal sounds indicating valvular lesions; second, showing that the natural sounds preserve their essential character and normal sounds preserve their essential characters and normal relations to each other.
Endocardial murmurs are very rarely heard, if ever, in purely functional disorder. A venous murmur, or hum, in the veins of the neck may be heard in persons in health, and the anaemic murmur may be diagnosed by the general condition of the patient. Aside from these two murmurs, it is not of practical importance whether a murmur be organic or inorganic, so far as relates to the treatment of functional disorder. Valvular lesions do not cause notable disturbance of the heart’s action prior to enlargement. If therefore enlargement is not present, the disturbed action of the heart may be considered as functional.
It must be borne in mind that all the normal heart sounds are intensified by the increased action present in functional disorder. So distinct do they become, that they may be perceived by the patient, especially at night. But if their sounds are only intensified, and not changed, we may know that functional disorder only exists.
In order to make a correct diagnosis, we must first determine whether organic disease be or be not present; second, if organic disease be present, to determine whether super-added functional disorder be not the source of more or less of the symptoms referable to the heart.
It is in this case as in tubercular phthisis, that we can sometimes decide from the mental condition of the patient. It is well known that persons affected with tuberculosis are cheerful, and do not appreciate the gravity of the disease, while in those pulmonary disorders not dangerous they are despondent and foreboding.
In functional cardiac disorder, the patient is very anxious and apprehensive, while in purely organic disease no such degree of anxiety is manifested; on the contrary, they are often apathetic on the subject.
Again, the same or a greater amount of disturbance, when present in organic disease of the heart, causes much less anxiety than when arising from functional disorder.
The paroxysmal character of functional disorder is quite in contrast with the continued persistency of the symptoms of organic lesions.
In functional disorder active exercise does not generally aggravate the symptoms, it sometimes alleviates them, while in organic disease the contrary obtains.
There are certain symptomatic conditions belonging especially to organic disease, that are absent in pure functional disorder. Among these are general dropsy, lividity, haemoptysis, paralysis from embolism. They may coexist with functional disorder, but are not caused by it.
Cardiac disturbance is probably functional if it be connected with plethora, anaemia, derangement of the nervous system from excessive venery, mental anxiety, the abuse of tobacco, tea, coffee, or with gout.
Organic disease, on the other hand, in the majority of cases originates in acute rheumatism. If the patient has never had the latter affection, the probability is that the disorder is functional.
Functional disorder occurs especially in the young, between puberty and middle life.
Organic disease is oftener present in persons past the meridian.
Functional disorder is oftener present in females than males, while the reverse occurs in organic disease.
Functional disorder is worse at night; organic disease during the day.
We should not, however, venture an opinion as to the presence or absence of functional disorder, until we have made a physical examination. This, and this only, should decide us in forming a diagnosis.
The prognosis in cases of uncomplicated functional disorder is always favorable. The opinion that it may lead to organic lesions has been disproved. We may safely assure our patients that if a recovery does not occur, no organic disease need be apprehended.
TREATMENT OF FUNCTIONAL DISORDER OF THE HEART.
The therapeutics of functional disorder of the heart include:
I. Relief of disturbed action when present, or palliative measures.
II. Removal of the morbid irritability of the heart, or the causes of such irritability. These are the true curative measures.
Palliative measures are those which will allay any temporary excitement or disturbed action.
The mildest form of the disorder, when it arises from a fright, or undue exercise, usually need only rest of mind and body to allay it. A single dose of aconite may be of service.
For the attacks of palpitation, irregular and intermitting action, weakness or syncope, the following remedies will be found appropriate:
For paroxysms of palpitation from physical excitement, mental emotion, etc., a single dose of aconite will suffice if it has been caused by fright; coffea if from excessive joy; ignatia if from sudden grief; and scutellaria if from inordinate excitement of other kinds.
For paroxysms of tumultuous and irregular beating of the heart, with violent impulse, the chief remedy is veratrum viride, in doses of one drop of the tincture every hour, or oftener; a few doses will quiet the excitement. Such paroxysms usually occur in plethoric subjects. In similar cases cactus is often indicated, also aconite, arsenicum, belladonna, cocculus, lachesis, naja, and spigelia.
For paroxysms characterized by irregularity and intermissions, with feeble action or impulse, another class of remedies is indicated, namely: digitalis, cannabis ind., laurocerasus, acidum hydrocyanicum, arsenicum, veratrum album, and aconite.
Paroxysms of tremulous agitation of the heart call for nearly the same remedies, but the attacks are generally of such brief duration, that there is no time for the administration of medicines.
Hysterical palpitations or disturbed action, require the use of ambra, asafoetida, camphor, castoreum, crocus, ignatia, lilium, sumbul, scutellaria, and valeriana.
In actual cardiac syncope, the use of active stimulation is necessary. Brandy, or any alcoholic liquor may be used, or camphor, xanthoxylum and ammonia, aided by the mustard foot bath. The recumbent posture is absolutely necessary until the attack is over.
[For special or characteristic indications for the selection of remedies consult the symptomatology given in this work.]
RADICAL OR CURATIVE TREATMENT.
Plethora should be treated by means of appropriate diet namely: the abstinence from rich and stimulating food coffee, pastry, and the avoidance of a sedentary life. Small meals and a large amount of active exercise are the principal curative agents.
The administration of veratrum viride in doses of five drops of the first decimal dilution three times a day, will aid in effecting a removal of the plethoric condition. Equally efficacious is the bromide of ammonium in five or ten grain doses of the first decimal trituration, taken after each meal.
Anaemia should be met by such remedies as will increase the proportion of red globules in the blood, and the use of such articles of diet as will bring about the same result. Active exercise in the open air, and a residence in non-malarious localities, should be advised.
Ferrum, in some form, is here the principal remedy; but it must be borne in mind that iron is not the remedy in all cases of anaemia. It will not remove anaemia caused by distressing emotions, nor the anaemia growing out of some morbid dyscrasia. It is only useful in cases arising from some fault in assimilation or abnormal condition of the vegetative system. Various preparations of iron have been found useful. Ferrum met. in the lowest triturations is generally useful; but if this does not have the desired result, and iron seems to be strongly indicated, select the lactate of iron, muriated tincture of iron, phosphate of iron, iodide of iron, or the citrate of iron and strychnia.
The hypophosphites of lime, soda, or potassa, phosphoric, or hypophosphoric acid, act promptly if the anaemia arise from nervous prostration or prolonged nervous excitement.
China is indispensable if the anaemia is the result of haemorrhages, or loss of any of the vital secretions of the body. Helonias, hydrastis, phosphoric acid, and arsenicum are indicated in similar conditions.
Cuprum is, according to Grauvogl, superior to iron in many cases of anaemia.
Nux vomica, ignatia, and strychnia are indispensable in certain anaemic conditions, when the blood is impoverished from deficient vitality of the nervous centres.
When derangement of the nervous system causes functional heart- disorder, nux, ignatia, secale, phosphorus, cuprum, digitalis, phosphoric acid, and similarly acting medicines are to be used. The bromide of potassa and zinc will be found useful in many cases.
When the cardiac irritation is reflex, we must select:
For gastric disturbance – nux vomica, pulsatilla, ignatia, collinsonia, lycopodium, iris ver., hydrastis, etc.
Collinsonia is very highly recommended by many prominent physicians of the eclectic school of medicine, as an excellent remedy in purely functional disorder of the heart, when its action is persistently rapid, but weak, or when there is excessive action with deficient force. It has been given successfully in doses of 5 to 15 drops of the tincture several times a day. The pathological conditions to which it is homoeopathic cannot be clearly defined because the provings do not yet indicate its specific action on the heart. But from its known curative action in cough, haemoptysis, haemorrhoids, and constipation, we may consider its action on the heart as reflex. My experience confirms the recommendation of its use in some cases of functional disorder.
For uterine disturbance – cimicifuga, pulsatilla, platina, lilium, sepia, gelsemium, nux moschata, sanguinaria, etc.
The following is one of the many notable cases of functional disorder of the heart resulting from uterine disease, which have come under my observation: