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254 DENTAL MEDICINE.
lungs alone, the heart's action continuing for some time after
respiration has quite ceased : this class includes ether and nitrous
oxide ; and he says, that in choosing an anaesthetic three factors
are to be considered: (i) The nature of the operation ; (2) the
amount of insensibility necessary; (3) the length of time during
which insensibility has to be kept up; and he sums up as
follows: (i) It is well to avoid all anaesthetics which tend to
depress the heart's action ; (2) for short operations nitrous oxide
is the best agent (3) for long operations, except where it is
;
desirable to avoid hemorrhage, or where the cautery is used,
ether answers perfectly the best time for operating is the
; (4)
early morning ; (5) nitrite of amyl is the best cardiac stimulant.
Dr. W. M. Barton sums up the practical advantages of ether
as follows
" I. The excitement stage is rarely seen except in alcoholics,
and is more violent if the anesthetic is hurried.
" 2. All the time the patient is kept under ether a sonorous
sound is heard, contrary to what passes with chloroform, where
respiration is silent, so much so that the ear may have to be
placed close to the chest to hear respiration. This snoring is
the tranquillity of the surgeon ; his ear perceives it and he is not
preoccupied with the condition of the patient. He does not
have to stop to ask ' if all is well ; ' ' if the patient breathes
well,' etc.
" is given
3. If the anaesthetic in too large doses and is ac-
cumulating, the snore is transformed into a deep rhoncus, grave,
and less regular, the face becomes cyanotic, the eye is congested.
It suffices to remove the mask and to pull out the tongue and all
is well. But there never appears that pallid tint, that cadaveric
look which we see preceding a chloroform syncope.
"4. The pulse, very active at first, soon slows, becomes regu-
lar, and is always strong and vibratory, contrary to chloroform
narcosis, in which it is rapid and soft.
" 5. The heart-beats are strong. Here is the indisputable
advantage of ether. The etherized never have that terrible,
sudden syncope, coming like a thunder-bolt out of a clear sky,
followed by death, notwithstanding all we can do.
254 DENTAL MEDICINE.
lungs alone, the heart's action continuing for some time after
respiration has quite ceased : this class includes ether and nitrous
oxide ; and he says, that in choosing an anaesthetic three factors
are to be considered: (i) The nature of the operation ; (2) the
amount of insensibility necessary; (3) the length of time during
which insensibility has to be kept up; and he sums up as
follows: (i) It is well to avoid all anaesthetics which tend to
depress the heart's action ; (2) for short operations nitrous oxide
is the best agent (3) for long operations, except where it is
;
desirable to avoid hemorrhage, or where the cautery is used,
ether answers perfectly the best time for operating is the
; (4)
early morning ; (5) nitrite of amyl is the best cardiac stimulant.
Dr. W. M. Barton sums up the practical advantages of ether
as follows
" I. The excitement stage is rarely seen except in alcoholics,
and is more violent if the anesthetic is hurried.
" 2. All the time the patient is kept under ether a sonorous
sound is heard, contrary to what passes with chloroform, where
respiration is silent, so much so that the ear may have to be
placed close to the chest to hear respiration. This snoring is
the tranquillity of the surgeon ; his ear perceives it and he is not
preoccupied with the condition of the patient. He does not
have to stop to ask ' if all is well ; ' ' if the patient breathes
well,' etc.
" is given
3. If the anaesthetic in too large doses and is ac-
cumulating, the snore is transformed into a deep rhoncus, grave,
and less regular, the face becomes cyanotic, the eye is congested.
It suffices to remove the mask and to pull out the tongue and all
is well. But there never appears that pallid tint, that cadaveric
look which we see preceding a chloroform syncope.
"4. The pulse, very active at first, soon slows, becomes regu-
lar, and is always strong and vibratory, contrary to chloroform
narcosis, in which it is rapid and soft.
" 5. The heart-beats are strong. Here is the indisputable
advantage of ether. The etherized never have that terrible,
sudden syncope, coming like a thunder-bolt out of a clear sky,
followed by death, notwithstanding all we can do.
