Local anesthesia

“ For instance, he needs to be warned that he will feel the slight prick of the needle when it is first introduced, for otherwise he will be disturbed by even so slight a pain at the very beginning and will magnify subsequent feelings until satisfactory local anesthesia becomes impossible. Without thorough command over the patient and complete trust, local anesthesia never succeeds except in very minor operations. There are some men, however, who can do even severe and extensive operations with comparatively small amounts of local anesthesia. ”

“ Though the patient may be convinced that he will suffer no pain, the mental attitude toward the local anesthesia, together with fear, may operate so strongly as to constitute a shock to the nervous system so great that a general anesthetic should be used and the local method abandoned, even were it apparently indicated.
Again, the injection of anesthetic drugs in cicatrical and inflamed tissues is quite difficult of accomplishment and because of the peculiarity of these tissues, diffusion throughout a given area is imperfect, hence insensibility is not complete. ”

“ It is to be remembered that in a majority of these cases the operation is undertaken to remedy a deformity, however caused, one that is not necessarily serious to health, and it would indeed be unwise to place such a [59] body in jeopardy or to take undue chances if they can be avoided. Ofttimes several operations, a few weeks apart, must be done and the frequent repetition of a general anesthetic might impair the health of the patient—a condition not associated with local anesthesia. ”

“ CHAPTER IV—ANESTHESIA FOR PERORAL ENDOSCOPY A dyspneic patient should never be given a general anesthetic. Cocaine should not be used on children under ten years of age because of its extreme toxicity. To these two postulates always in mind, a third one, applicable to both general and local anesthesia, is to be added—total abolition of the cough-reflex should be for short periods only. General anesthesia is never used in the Bronchoscopic Clinic for endoscopic procedures. ”

“ Technic of Removal of Foreign Bodies from the Larynx.—The patient is to be placed in the author's position, shown in Fig. 53. No general anesthesia should be given, and the application of local anesthesia is usually unnecessary and further, is liable to dislodge and push down the foreign body.* Because of the risk of loss downward it is best to seize the foreign body as soon as seen ”

“ A number of local anesthetics have been introduced, and in some hands only comparatively small quantities of them are needed in order to produce complete absence of pain during operations. In other hands, however, considerable and even toxic quantities may have to be employed and sometimes without entire satisfaction. Infiltration anesthesia depends for its success largely on the personal influence of the administrator over the patient. It is extremely important that the patient should have complete confidence and not have that confidence disturbed in any way. ”

“ The acute fear of a surgical operation may be banished by the use of certain drugs that depress the associational power of the brain and so minimize the effect of the preparations that usually inspire fear. If, in addition, the entire field of operation is blocked by local anesthesia so that the associational centers are not awakened, the patient will pass through the operation unscathed. ”

“ He went to the hospital, and the anesthetist began to prepare him for the anesthesia. He told them that he wanted no anesthesia, as he was going to have the operation done without taking anything. The surgeon was loath to operate without some kind of general or local anesthetic, but he told him he wanted nothing, as he thought he could control himself. The surgeon consented, but had ready chloroform and a hypodermic with cocaine. The Doctor clinched his teeth and hands with all his might, and put himself into as powerful a tension as possible for about three minutes before lying on the table. ”

“ In many of the more severe conditions not to be classified as minor surgery, the surgeon may consider the comfort of the patient and his own convenience and employ local in preference to general anesthesia, even tho the patients may be of the most robust type. ”

“ Local or general anesthesia should be resorted to in painful and serious surgical operations, as operations upon all living creatures should be humanely performed and all unnecessary pain and suffering avoided. ”

“ Among the advantages, aside from the number of assistants required and the discomfort immediately following the administration of a general anesthesia, are the absence of remote ill effects of the invasion throughout the entire system of a noxious chemical substance and its direct deleterious effects on many large organs such as the lungs, heart, kidneys, and liver, and the assurance, when a proper drug, dosage, and technic are employed, that death cannot be ascribed to the anesthetic. ”

“ Care, however, should be taken to inject just sufficient of the solution to penetrate beyond the zone of operation laterally, to insure sufficient space for the insertion of sutures into anesthetized tissues. Only a small quantity of fluid is necessary in this procedure as it comes in direct contact with nerve terminals. By touching the injected line with the needle in several places along its length and inquiring of the patient if it is felt, we may make sure of the completeness of the anesthesia before making the incision which should begin and end inside the anesthetized area. ”

“ The anesthetist is absolute master of the situation. Although the patient’s face turns somewhat blue during the vomiting efforts, the anesthetist should not attempt to push the jaw forward or exert traction on the tongue. The face is merely turned to the side and kept in position by placing the hand on the cheek. The mouth and pharynx are cleansed gently with a piece of gauze and the anesthetic is continued, drop by drop. It is often surprising in such cases how rapidly the patient can be brought back into the proper plane of anesthesia. There need be no fear that the patient will fully awake. ”

“ The breathing becomes normal and unrestrained as soon as the surgeon desists from these vigorous manipulations.
Crowding Probably the most common of mistakes is crowding the anesthetic. The anesthetist becomes aware of faint, high pitched notes in the breathing—the beginning of obstructed 14respiration. He examines the lid and corneal reflex and these convince him that the patient is in the state of superficial anesthesia. Naturally, he gives more of the anesthetic. To his great chagrin the breathing becomes progressively more stertorous. ”

“ The movements of the diaphragm must be constantly watched as it is the first to become paralyzed when anesthesia is carried too far. The same care must be observed with the pupil for cerebral and the pulse for cardiac signs. Before giving this anesthetic the same preparations as for chloroform narcosis should be observed. The stomach should be empty, the nose and mouth smeared with vaselin, and the eyes protected with a towel.
At first the patient is given the ether with a considerable mixture of air, which should be lessened gradually. ”

“ Assuming that no unfavorable effect is produced by the anesthetic and that there is no hemorrhage, the cells of the brain cannot be exhausted in the course of a surgical operation except by fear or by trauma, or by both. Fear may be excluded by narcotics and special management until the patient is rendered unconscious by inhalation anesthesia. ”

“ Whatever drug is used, strong solutions are seldom necessary for application to the mucous membranes but the necessary time for its absorption is a prime requisite. To secure anesthesia of the conjunctiva and cornea, the solution is dropped into the eye at the outer canthus and as it flows off with the tears, it must be replenished three or four times until anesthesia is accomplished. In the nose, a spray over the site of incision or a pledget of cotton saturated with the anesthetic solution and allowed to rest in contact with that locality, will suffice. ”

“ If the cleansing manipulations do not disturb the rhythm of the snoring respiration, the rate of the pulse does not increase and the patient makes no defensive movements, he is very likely already in the proper plane of anesthesia. ”

“ If the patient is induced to vomit, he should immediately be turned on his side to prevent the indrawing of the ejected matter into the lungs. After it has ceased, thoroughly wipe out the mouth with a long-handled sponge. The anesthetic must now be crowded slightly to overcome the irritation of the mucous membrane of the stomach. Often during the early stage of anesthesia the patient stops breathing, which must be overcome by slapping the chest or by two or three forceful downward movements on the epigastrium. ”

“ People who have been operated on know better. The patient does not feel the knife, and the operation is therefore enormously facilitated for the surgeon; but the patient pays for the anesthesia with hours of wretched sickness ”

“ Nowhere in the domain of surgery is the influence of the mind more important than in the production of anesthesia for surgical purposes. It is well known that intense preoccupation of mind will make an individual completely anesthetic even for very severe injuries. In battle men frequently are severely wounded, yet do not know it, or at least have no idea of the extent of the wound and of the pain that ordinarily would be inflicted by it. ”

“ It is wiser to give a general anæsthetic, such as gas and oxygen, as the pain of the operation may be intense. If this is refused, local anæsthesia by Gray’s solution (see p. 310) or by a subcutaneous injection of cocaine and adrenalin may be employed. In infants an anæsthetic is not necessary.
The patient may be sitting up or lying down. If a general anæsthetic has not been given, the patient’s head must be held firmly by an assistant in order to prevent sudden movement. The surgeon works by reflected light in order to obtain a clear view of the tympanic membrane. ”

“ When there are evidences of chronic myocarditis or a history of broken compensation and the borderline of compensation and dilatation is very narrow, or when there is arteriosclerosis, the danger from an anesthetic and an operation is much greater; it may be serious, in fact, and the decision must be made whether or not the operation is absolutely necessary. Under any circumstances it is understood that the anesthetist must be an expert, as there can be no carelessness and nothing but the best of judgment in causing anesthesia when there is cardiac defect. ”

“ In intubation anesthesia, or tube anesthesia, as it might be called, the patient does not receive the anesthetic directly from a cone or mask. It is inhaled through a soft rubber tube which is introduced into the pharynx through the nostril or mouth. It is most successful in cases that do not require a 39very profound narcosis. It is indicated in operations on the head, enabling the anesthetist to be at a distance from the field of operation and out of the surgeon’s province. ”

“ Among the unconscious responses to trauma under ether anesthesia are purposeless moving, the withdrawal of the injured part, and, if the anesthesia be sufficiently light and the trauma sufficiently strong, there may be an effort toward escape from the injury. In injury under ether anesthesia every grade of response may be seen, from the slightest change in the respiration or in the blood-pressure to a vigorous defensive struggle. ”

“ Whether the case is an apparently simple or a critical one, it should be remembered that the good anesthetist, like the good surgeon, is he who, besides being competent, has a conscience, and feels his responsibility, who appreciates that there are some who are anxiously awaiting the outcome, and have a deep interest in the life that is in his hands. ”

“ Anesthesia is necessary where absolute immobility of the patient is essential and where entire muscular relaxation is indispensable. The anesthetic condition is also favorable for the adjustment of displaced organs. ”

“ In cases of violent fixed pains, with swelling and threatening of matter forming, incision may be sometimes practised with relief to the patient, but is not to be had recourse to unless there is a risk of the bone suffering. Local abstraction of blood is advantageous, and may, if necessary, be followed by counter-irritation, as the application of blisters or sinapisms. Friction with stimulating substances, or with opiate liniments, is often useful when the disease begins to yield, the pain and puffiness of the parts being thereby dispelled. ”

“ In some cases of breech presentation, particularly among primiparæ, it is necessary to assist nature in the delivery of the child in order to save its life. Complete anesthesia is usually necessary at such times and the patient is preferably on a table or at the edge of the bed in a lithotomy position. ”

“ Whether the ANESTHETIZED cells are influenced or not must be determined by noting the physiologic functions of the body after anesthesia has worn off, and in animals by an examination of the brain-cells as well. It has long been known that the vasomotor, the cardiac, and the respiratory centers discharge energy in response to traumatic stimuli applied to various sensitive regions of the body during surgical anesthesia. If the trauma be sufficient, exhaustion of the entire brain will be observed after the effect of the anesthesia has worn off ”