2007年9月26日 星期三
left CN3, 4,5-1, or 6 palsy
dysarthria, dysphagia
chart 3716182
2007年9月24日 星期一
2007年9月21日 星期五
NE New York University School of Medicine
Have the patient sit facing you on the examining table. Take a few seconds to actively observe the patient, and continue to actively observe the patient during the exam.
Level of consciousness. Always begin the exam by introducing yourself to the patient as a tool to evaluate the patient's gross level of consciousness. Is the patient awake, alert and responsive? If not, then the exam may have to be abbreviated or urgent actions may have to be taken. | ![]() |
Personal Hygiene and Dress.
Note the patient's dress. Is it appropriate for the environment, temperature, age or social status of the patient? Is the patient malodorous or disheveled?
![]() | Posture and Motor Activity. What posture does the patient assume when instructed to sit on the table? Are there signs of involuntary motor activity, including tremors (resting versus intention, also note the frequency in hertz of the tremor), choreoathetotic movements, fasciculations, muscle rigidity, restlessness, dystonia or early signs of tardive dyskinesia? Chorea refers to sudden, ballistic movements, and athetosis refers to writhing, repetitive movements. Fasciculations are fine twitching of individual muscle bundles, most easily noted on the tongue. Dystonia refers to sudden tonic contractions of the muscles of the tongue, neck (torticollis), back (opisthotonos), mouth, or eyes (oculogyric crisis). Early signs of tardive dyskinesia are lip smacking, chewing, or teeth grinding. Damage to the substantia nigra may produce a resting tremor. This tremor is prominent at rest and characteristically abates during volitional movement and sleep. Damage to the cerebellum may produce a volitional or action tremor that usually worsens with movement of the affected limb. Spinal cord damage may also produce a tremor, but these tremors do not follow a typical pattern and are not useful in localizing lesions to the spinal cord. |
Height, Build and Weight.
Is the patient obese or cachectic? If cachectic, note any wasting of the temporalis muscles. Note the general body proportions and look for any gross deformities. Also check for dysmorphic features, including low set ears, wide set eyes, small mandible, mongoloid facies, etc.
Vital Signs.
These include temperature, pulse, respiratory rate and blood pressure. It is essential that the vitals always be taken as an initial assessment of a patient. Emergency measures may have to be taken for drastically abnormal vital signs.
Follow this vital sign acquisition routine:
Place the thermometer under the patient's tongue and instruct the patient to keep it there. Wait 20-30 seconds for the results. | ![]() |
![]() | Next, find the radial pulse in the patient's right arm with your first two fingertips of your right hand. Look at your watch and count the pulses over 15 seconds and then multiply by 4. Note the quality of the pulse. Is it bounding or thready, weak or prominent, regular or irregular, slow or rapid?. Once you are finished with the pulse measurement, keep your fingers on the pulse and secretly look at the patient's chest and count respirations for 15 seconds and also multiply this number by 4. Keeping your hand on the patient's pulse prevents the patient from becoming conscious of you watching them breath, preventing a likely adjustment in their respiratory rate. |
Next, take the blood pressure. If it is high repeat the measurement later in the examination. | ![]() |
![]() | Finally, if a high temperature is present, or a previous history was taken suggesting meningeal irritation, test the patient for meningismus. Ask the patient to touch their chin to their chest to evaluate neck stiffness (a person with meningeal inflammation can only do this with pain). A positive Brudzinski's test is when the patient lifts their legs off the table in an effort to releave pain felt when the neck is flexed. |
Next, have the patient lie flat on the examining table. Keeping the lower leg flexed, raise the upper leg until it is perpendicular to the floor. Slowly extend the lower leg while keeping the upper leg stationary. If meningeal irritation is present, this maneuver will be painful for the patient. Sometimes the patient will raise their head off the table and/or scream if pain is present, this is considered a positive Kernig's test. Meningismus consists of fever, clouding of consciousness, photophobia (bright light being painful to look at), nuchal rigidity, a positive Brudzinski's test, and possibly a positive Kernig's test. | ![]() |
Special Topic: Classic Cerebrospinal Fluid Characteristics |
Idiopathic Seizures | Clear CSF with normal protein, normal glucose, no WBC's, no RBC's, normal opening pressure and normal % Gamma globulin. |
Bacterial Meningitis: | Milky CSF with increased protein, decreased glucose, high WBC's (PMN predominate), few RBC's, mildly increased opening pressure and normal % Gamma globulin. |
Guillain-Barre Syndrome: | Yellow CSF with very high protein (up to a gram), normal glucose, no WBC's, no RBC's, normal opening pressure and normal % Gamma globulin. |
Subarachnoid Hemorrhage: | Yellow CSF with increased protein, normal glucose, few WBC's, inumerable RBC's, mildly increased opening pressure and normal % Gamma globulin. |
Herpes Simplex Encephalitis: | Cloudy CSF with increased protein, normal glucose, increased WBC's (lymphocyte predominate), few RBC's, increase in opening pressure and normal % Gamma globulin. |
Viral Meningitis: | Cloudy CSF with increased protein, normal glucose, increased WBC's (lymphocyte predominate), no RBC's, normal opening pressure and normal % Gamma globulin. |
Multiple Sclerosis: | Clear CSF with mild increase in protein, normal glucose, few WBC's (lymphocytic predominate), no RBC's, normal opening pressure, increased % Gamma globulin. |
Benign Intracranial Hypertension: | Clear CSF with normal protein, normal glucose, no WBC's, no RBC's, increased opening pressure and normal % Gamma globulin. |
©1995-2006 New York University School of Medicine
Questions or comments?
2007年7月16日 星期一
Brainstem stroke and fusiform aneurysm of veterbrobasial arteries
M79 96.07.16 14:07 張oo 56 man (chart 4351731)
diplopia for 3 days, unsteady gait with deviation to the right side
VB fusiform aneurysm related brainstem stroke
how to manage this case?
2007年7月11日 星期三
Neurological Disorders and Sleep Disturbance
Neurological Disorders and Sleep Disturbance |
Sleep and Epilepsy |
There is a distinct and reciprocal relationship between sleep and epilepsy (Chokroverty and Quinto 1999; Dinner 2002). Sleep affects epilepsy, and epilepsy affects sleep. In the beginning of the last century, before the availability of encephalography, several authors emphasized that many seizures are predominantly nocturnal and occur at certain times at night. The modern era of combining the clinical and EEG findings on sleep and seizures began with the observation of Gibbs and Gibbs in 1947 that EEG epileptiform discharges were seen more often during sleep than during wakefulness (Chokroverty and Quinto 1999). A basic understanding of the mechanism of epileptogenesis and sleep makes it clear why seizures are often triggered by sleep. The fundamental mechanism for epileptogenesis includes neuronal synchronization, neuronal hyperexcitability, and a lack of inhibitory mechanism. During NREM sleep, there is an excessive diffuse cortical synchronization mediated by the thalamocortical input, whereas during REM sleep, there is inhibition of the thalamocortical synchronizing influence in addition to a tonic reduction in the interhemispheric impulse traffic through the corpus callosum. Factors that enhance synchronization are conducive to active ictal precipitation in susceptible individuals. NREM sleep thus acts as a convulsant by causing excessive synchronization and activation of seizures in an already hyperexcitable cortex. In contrast, during REM sleep, there is attenuation of epileptiform discharges and limitation of propagation of generalized epileptiform discharges to a focal area. |
Sleep deprivation is another important seizure-triggering factor, and the value of sleep-deprived EEG studies in the diagnosis of seizures is well known. Sleep deprivation increases epileptiform discharges, mostly during the transition period between waking and light sleep. Sleep deprivation causes sleepiness, which is one factor for activation of seizures, but it probably also increases cortical excitability, which triggers seizures. However, in a recent report on 84 patients with medically refractory partial epilepsy with secondary generalization undergoing inpatient monitoring, Malow et al. (2002) noted that acute sleep deprivation did not affect seizure incidence. |
Effect of Sleep on Epilepsy. |
True nocturnal seizures (Malow and Plazzi 2003; Chokroverty and Quinto 1999) may include tonic seizures, benign focal epilepsy of childhood with rolandic spikes or occipital paroxysms, juvenile myoclonic epilepsy, electrical status epilepticus during sleep or continuous spikes and waves during sleep, generalized tonic-clonic seizures on awakening, nocturnal frontal lobe epilepsy including nocturnal paroxysmal dystonia (NPD), and a subset of patients with temporal lobe epilepsy (nocturnal temporal lobe epilepsy). Many patients with generalized tonic-clonic and partial complex seizures also have predominantly nocturnal seizures. Nocturnal seizures may be mistaken for motor and behavioral parasomnias or other movement disorders that persist during sleep or reactivate during stage transition or awakenings in the middle of the night. |
Tonic Seizure. |
Benign Rolandic Seizure. |
Juvenile Myoclonic Epilepsy. |
page 2025 |
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page 2026 |
Nocturnal Frontal Lobe Epilepsy. |
Nocturnal frontal lobe epilepsy includes (Provini et al. 1999; Malow and Plazzi 2003) nocturnal paroxysmal dystonia, paroxysmal arousals and awakenings, episodic nocturnal wanderings, and autosomal dominant nocturnal frontal lobe epilepsy. These disorders all share common features of abnormal paroxysmal motor activities during sleep and respond favorably to anticonvulsants. They most likely represent partial seizures arising from discharging foci in the deeper regions of the brain, particularly the frontal cortex, without any concomitant scalp EEG evidence of epileptiform activities. The relationship to seizures, particularly partial complex seizures of temporal or extratemporal origin, however, remains controversial. Nonepileptic seizures or pseudoseizures are not common during sleep at night but sometimes can occur and be mistaken for true nocturnal seizures, and it is important to differentiate these from true seizures because of difference in management. |
Table 74-22. Features of nocturnal paroxysmal dystonia |
Onset: infancy to fifth decade |
Usually sporadic; rarely familial |
Sudden onset from non-rapid eye movement sleep |
Two clinical types: Common type is short-lasting (15 sec to <2> |
Semiology: ballismic, choreoathetotic, or dystonic movements |
Often occurs in clusters |
Electroencephalogram: generally normal |
Short-duration attacks are most likely a type of frontal lobe seizure |
Treatment: carbamazepine![]() |
Table 74-23. Features of frontal lobe seizures |
Age of onset: infancy to middle age |
Sporadic, occasionally familial (dominant) |
Both diurnal and nocturnal spells, sometimes exclusively nocturnal |
Sudden onset in non-rapid eye movement sleep with sudden termination |
Duration: mostly less than 1 min, sometimes 1-2 min with short postictal confusion |
Often occur in clusters |
Semiology: tonic, clonic, bipedal, bimanual, and bicycling movements; motor and sexual automatisms; contralateral dystonic posturing or arm abduction with or without eye deviation |
Ictal EEG may be normal; interictal EEG may show spikes; sometimes depth recording is needed |
EEG = electroencephalogram. | |
Five patients were originally described who had episodes of abnormal movements that were tonic and often violent during NREM sleep almost every night. Ictal and interictal EEG findings were normal. Later, 12 patients were described with NREM sleep-related choreoathetotic, dystonic, and ballismic movements each night, often occurring many times during the night for many years. The term nocturnal paroxysmal dystonia (NPD) was coined for this entity (Table 74.22). The disorder in all patients responded to carbamazepine![]() |
Autosomal Dominant Nocturnal Frontal Lobe Epilepsy. |
An autosomal dominant form of frontal lobe epilepsy usually starts in childhood and persists throughout adult life. Attacks are characterized by brief motor seizures in clusters during sleep. Neurological examination and neuroimaging studies are normal. Videotelemetry during the attacks confirms their epileptic nature, and the response to carbamazepine![]() |
Effect of Epilepsy on Sleep |
Printed from: Neurology in Clinical Practice (on 11 July 2007) © 2007 Elsevier |
2007年7月6日 星期五
IV fluid administration in ischemic stroke for a CHF old-aged patient
2007年6月30日 星期六
seizure or Adam-Stokes attack due to hypoxia
Stokes-Adams attackWikipedia, the free encyclopedia - Cite This SourceThe term Stokes-Adams Attack refers to a sudden, transient episode of syncope, occasionally featuring seizures. It is named after two Irish physicians, Robert Adams (1791–1875) and William Stokes (1804–1877).
Signs and symptomsThe patient goes pale just before the attack, the pulse stops, and they collapse. Normal periods of unconsciousness are around 30 seconds; if seizures are present, they will consist of twitching after 15–20 seconds. Breathing continues normally throughout the attack, and so on recovery the patient becomes flushed as the heart rapidly pumps the oxygenated blood from the pulmonary beds into a systemic circulation which has become dilated due to hypoxia.
As with any syncopal episode that results from a cardiac dysrhythmia, the faints do not depend on the patient's position. If they occur during sleep, the presenting symptom may simply be feeling hot and flushed on waking.
DiagnosisStokes-Adams attacks may be diagnosed from the history, with paleness prior to the attack and flushing after it particularly characteristic. The ECG will show asystole or ventricular fibrillation during the attacks.
CausesThe attacks are caused by loss of cardiac output due to cardiac asystole, heart block, or ventricular fibrillation. The resulting lack of blood flow to the brain is responsible for the faint.
TreatmentTreatment is normally surgical, involving the insertion of a pacemaker.
PrognosisIf undiagnosed (or untreated), Stokes-Adams attacks have a 50% mortality within a year of the first episode. The prognosis following treatment is very good.
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