ANS2 Flashcards

1
Q

Disease associated with Raynaud

A

scleroderma

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2
Q

Less common causes of Raynaud

A

Obstructive arterial disease–as might
occur with the thoracic outlet syndrome, vasospasm
because of drugs (ergot, cytotoxic agents, cocaine), previous
cold injury (frostbite), and circulating cryoglobulins

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3
Q

The presence of ____________, visible with an

ophthalmoscope, has been used as a bedside aid to reveal cases of connective tissue disease in pts with Raynaud

A

distorted and

proliferative capillaries in the nail bed

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4
Q

Pathophysio for Raynaud

A

arterial constriction or a decrease in the intraluminal

pressure

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5
Q

Drugs that cause vasoconstriction

A

ergots, sympathomimetics,

clonidine, and serotonin receptor agonists

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6
Q

condition in which the feet and lower extremities
become red and painful on exposure to warm temperatures
for prolonged periods

A

En;thromelalgia,

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7
Q

Extirpation of _________ relieves

the more severe cases of palmar sweating

A

T2 and T3 sympathetic ganglia

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8
Q

Tx for hyperhydrosis

A

Treatment with local injections of botulinum

toxin

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9
Q

T or F

sweating is affected in restricted spinal root
disease because there is much intersegmental mixing of
the preganglionic axons once they enter the sympathetic
chain and there are no preganglionic autonomic fibers in
the roots below L2.

A

F

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10
Q

where is the lesion?
The bladder is paralyzed for voluntary and
reflex activity and there is no awareness of the state of
fullness;

A

Complete Destruction of the Cord Below T12

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11
Q

What is this manuever?

lower abdominal compression and
abdominal straining

A

Crede maneuver, i.e.,

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12
Q

CMG findings of Complete Destruction of the Cord Below T12?

A

The cystometrogram

shows low pressure and no emptying contractions

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13
Q

causes of primary
sensory bladder paralysis.

fibers affected?

A

Diabetes and tabes dorsalis

Neuropathies affecting mainly the small
fibers are the ones usually implicated

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14
Q

Such lesions

result in a reflex neurogenic (spastic) bladder

A

Upper Spinal Cord Lesions, Above T12

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15
Q

_________________is the result
of vesicular p ressure exceeding the opening pressure
of the sphincter in an areflexic bladder

A

overflow incontinence

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16
Q

CMG of lesions above T12

A

The cystometrogram
shows uninhibited contractions of the detrusor muscle in
response to small volumes of fluid

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17
Q

Repeated overdistention
of the bladder wall often results in varying degrees of
decompensation of the _______ and permanent
___________, although the evidence for this mechanism
is uncertain

A

detrusor muscle

atonia or hypotonia

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18
Q

There is a supranuclear
type of hyperactivity of the detrusor that results in precipitant
voiding

A

Frontal Lobe Incontinence

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19
Q

pontine nucleus for

micturition

A

Barrington nucleus

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20
Q

In
the case of a flaccid paralysis of the bladder, ______
produces contraction of the detrusor by direct stimulation
of its muscarinic cholinergic receptors

A

bethanechol (Urecholine)

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21
Q

In spastic
paralysis, the detrusor can be relaxed by ______________ which acts as a muscarinic
antagonist, and by _____________________, which acts directly on the smooth muscle and
also has a muscarinic antagonist action.

A

propantheline (Pro-Banthine, 15 to 30 mg tid),

oxybutynin (Ditropan, 5 mg bid or tid)

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22
Q

More recently, alpha1 -sympathomimetic-blocking
drugs such as__________________ have
been used to relax the urinary sphincter and facilitate
voiding

A

terazosin, doxazosin, and tamsulosin

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23
Q

alpha1 -sympathomimetic-blocking drugs’ widest use has been in men with prostatic
hypertrophy, but they may be beneficial in patients with
_____________from neurologic disease.

A

dyssynergia of the sphincter (failure of the sphincter to

open when the detrusor contracts)

24
Q

Antibodies vs __________ are associated in DM polyneuropathy

A

alpha subunit of the ganglionic acetylcholine

receptor

25
it has been suggested that paradoxical contraction of the ________ and ________ may be a cause of severe constipation (anismus)
puborectus and external anal sphincter
26
mutations in Hirschsprung
mutation of the RET oncogene, endothelin receptor
27
Neocortical influences referable to sex involve the limbic | system and are transmitted to the ______ and _____
hypothalamus and spinal | centers
28
Penile erection is effected through sacral | ______, ________ and ________
parasympathetic motor neurons (S3 and S4), the nervi | erigentes, and pudendal nerves
29
There is some evidence also that a sympathetic outflow from t__________ via the inferior mesenteric and hypogastric plexuses can mediate psychogenic erections in patients with complete sacral cord destruction
horacolumbar segments | originating in T12-Ll
30
excessive sexual desire is associated with lesions of:
diencephalon, septal region, | and temporal lobes;
31
The most | common cause of erectile dysfunction is a ______
depressive | state
32
The phosphodiesterase inhibitors such as __________have proved to be useful in the treatment of erectile dysfunction in some patients with sexual dysfunction of neurologic cause.
sildenafil (Viagra)
33
mechanism of sildenafil
it enhances the effect of local nitric oxide on the smooth muscle of the corpus cavemosum; this results in relaxation of the smooth muscle and inflow of blood
34
In patients with poliomyelitis, for example, the occurrence of respiratory failure was associated with lesions in the ________
ventrolateral | tegmentum of the medulla
35
Three paired groups of respiratory nuclei: (1) a _____________extending from the lower to the upper ventral medulla, in the region of the nucleus retroambiguus; (2) a dorsal medullary respiratory group (DRG), located ; and (3) two clusters of cells in the dorsolateral pons in the region of the ___________
ventral respiratory group (referred to as VRG), dorsal to the obex and immediately ventromedial to the NTS parabrachial nucleus.
36
The __________ form a thin column in the medial parts of the ventral horns, extending from the third through fifth cervical cord segments. Damage to these neurons, of course, precludes both voluntary and automatic breathing.
phrenic motor neurons
37
____________was the dominant generator of the respiratory rhythm
DRG
38
One pontine group, the____________ modulates the response to hypoxia, hypocapnia, and lung inflation
"pneumotaxic center,"
39
found in the lower pons is a group of neurons that prevent unrestrained activity of the medullary inspiratory neurons ________________
("apneustic center").
40
What is this reflex? shortened inspiration and decreased tidal volume triggered by excessive lung expansion.
Hering-Breuer reflex,
41
Patterns such as episodic tachypnea up to 100 breaths per minute and loss of voluntary control of breathing were, in the past, noteworthy features of _________
postencephalitic | parkinsonism
42
there is an almost continuous epigastric pulsation and dyspnea in association with rhythmic bursts of activity in the inspiratory muscles-a respiratory myoclonus akin to palatal myoclonus
Leeuwenhoek's disease
43
what type of breathing: During the apneic period the patient is less responsive. The onset of respiration is heralded by arousal, marked by eye opening and sometimes vocalization. At the peak of the hyperventilation phase, the patient is maximally awake. Consciousness then wanes followed by slowing of the respiratory rate and finally coma to complete a full cycle
Chey;ne-Stokes breathing,
44
Another striking aberration of ventilation is a loss of automatic respiration during sleep, with preserved voluntary breathing ________
(Ondine's curse
45
lesions for Ondine's curse
ventrolateral descending medullocervical pathways that | subserve automatic breathing
46
Often neglected i s the dyspnea that patients experience | with orthostatic hypotension ________
(orthostatic dyspnea).
47
This rare condition begins in infancy with apneas and sleep disturbances of varying severity or later in childhood with signs of chronic hypoxia leading to pulmonary hypertension
congenital cen tral hypoventilation syndrome
48
lesions for hiccups from?
It may occur as a | component of the lateral medullary syndrome
49
meds associated with hiccups
dexamethasone.
50
result of powerful contraction of the diaphragm and intercostal muscles, followed immediately by laryngeal closure.
hiccup
51
hiccups inhibited by?
inhibited by therapeutic elevation of arterial carbon | dioxide (C02) tension
52
drugs for hiccups
baclofen and metoclop
53
abdominal wall retracts during inspiration, owing to the failure of the diaphragm to contract, while the intercostal and accessory muscles create a negative intrathoracic pressure
paradoxical respiration
54
a pattern of diaphragmatic descent only on alternate breaths (this is more characteristic of airway obstruction). These signs appear in the acutely ill patient when the vital capacity has been reduced to approximately 10 percent of normal, or 500 mL in the average adult.
respiratory alternans
55
accounts for as many as 40 percent of cases of an | inability to wean a patient from the ventilation
critical illness polyneuropathy
56
EMG of critical illness polyneuropathy
The EMG demonstrates widespread denervation with relative sparing of sensory potentials.