Chapter 021 Syncope (Part 1) docx
Chapter 021. Syncope (Part 1) docx
... (massive acute myocardial infarction)
Chapter 021. Syncope
(Part 1)
Harrison's Internal Medicine > Chapter 21. Syncope
Syncope: Introduction
Syncope, a transient loss of consciousness ...
disease (Table 21 -1). Not infrequently, however, the cause of syncope is
multifactorial.
Table 21-1 Causes of Syncope
I. Disorders of Vascular Tone or Blood Volume
A. Re...
Chapter 021. Syncope (Part 6) docx
... (Chap. 364). Electroencephalography is indicated if seizures
are suspected.[newpage]
Chapter 021. Syncope
(Part 6)
Diagnostic Tests
The choice of diagnostic tests should be guided by the ... pulmonary
angiography is indicated in patients in whom syncope may be due to pulmonary
embolus.In cases of possible cerebrovascular syncope, neuroimaging tests may be
indicated, incl...
Chapter 021. Syncope (Part 2) potx
... hypoxic-ischemic injury.
Chapter 021. Syncope
(Part 2)
Disorders of Vascular Tone or Blood Volume
Disorders of vascular tone or blood volume that can cause syncope include
the reflex syncopes and a ... number of conditions resulting in orthostatic intolerance.
The reflex syncopes—including neurocardiogenic syncope, situational syncope,
and carotid sinus hypersensitivity—sh...
Chapter 021. Syncope (Part 3) doc
... response). The
Chapter 021. Syncope
(Part 3)
Situational Syncope
A variety of activities, including cough, deglutition, micturition, and
defecation, are associated with syncope in susceptible ... occurs at night
during or immediately after voiding. Deglutition syncope and defecation syncope
occur in men and women. Deglutition syncope may be associated with esophageal...
Chapter 021. Syncope (Part 4) ppsx
... Chapter 021. Syncope
(Part 4)
Glossopharyngeal Neuralgia
Syncope due to glossopharyngeal neuralgia (Chap. 3 71) is preceded by pain
in the oropharynx, ... common reason that cardiac output cannot increase.
Pericardial tamponade is a rare cause of syncope. Syncope occurs in up to 10% of
patients with massive pulmonary embolism and may occur with ... impulse conduction (e.g...
Chapter 021. Syncope (Part 5) potx
... in syncope. Urinary
incontinence is frequent in seizures and rare in syncope. The return of
consciousness is prompt in syncope and slow after a seizure. Mental confusion,
Chapter 021. Syncope ... confusion,
Chapter 021. Syncope
(Part 5)
Cerebrovascular Disease
Cerebrovascular disease alone rarely causes syncope but may lower the
threshold for syncope in patients w...
Chapter 021. Syncope (Part 7) potx
...
hypertension.Disopyramide (150 mg bid), a vagolytic antiarrhythmic drug with
Chapter 021. Syncope
(Part 7)
Syncope: Treatment
The treatment of syncope is directed at the underlying cause. This
discussion ... side. Those with
intractable syncope due to the cardioinhibitory response to carotid sinus
stimulation should undergo permanent pacemaker implantation.Patients with...
Chapter 017. Fever and Hyperthermia (Part 1) docx
... may begin at this time; however, shivering is not
Chapter 017. Fever and Hyperthermia
(Part 1)
Harrison's Internal Medicine > Chapter 17. Fever and Hyperthermia
Fever and Hyperthermia:
Chapter 024. Gait and Balance Disorders (Part 1) docx
... spinal pattern generators
to promote stepping.
Chapter 024. Gait and Balance Disorders
(Part 1)
Harrison's Internal Medicine > Chapter 24. Gait and Balance Disorders
Prevalence,
Chapter 028. Sleep Disorders (Part 1) docx
... wakefulness is termed
polysomnography.
Polysomnographic profiles define two states of sleep: (1) rapid-eye-
movement (REM) sleep, and (2) non-rapid-eye-movement (NREM) sleep. NREM
sleep is ...
Normal nocturnal sleep in adults displays a consistent organization from
night to night (Fig. 28 -1). After sleep onset, sleep usually progresses through
NREM stages 1–4 within 45–60 min. Slow-wa...