NR509 Final Chapter 24 Neurological PDF
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This chapter of a medical textbook discusses the nervous system, techniques of examination, and common neurological disorders. It details anatomy and special techniques used in neurological diagnosis. The document aims to describe and explain related concepts. It explores a wide range of neurological conditions.
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▪ neck pain wih bilaeral weakness and pareshesia in boh upper and lower exremies, oen wih urinary requency. Hand clumsiness, palmer pareshesia, and gai changes maybe suble. Neck exion oen exacerbaes sympoms...
▪ neck pain wih bilaeral weakness and pareshesia in boh upper and lower exremies, oen wih urinary requency. Hand clumsiness, palmer pareshesia, and gai changes maybe suble. Neck exion oen exacerbaes sympoms. ▪ Physical signs hyperreexia; Clonus a he wris, knee, or ankle; Exensor planar reexes (posive Babinski signs); and gai disurbances. May also see Lhermie sign: neck exion wih resulng sensaon o elecrical shock radiang down he spine. Conrmaon o cervical myelopahy warrans neck immobilizaon and neurosurgical evaluaon. Chapter 24 Nervous System Techniques o examinaon o When neurologic disease is suspeced, wo complemenary quesons should be addressed hroughou your assessmen. These quesons are no answered separaely, bu ineracvely as you learn abou he paen during he inerview and esablish your neurologic ndings ▪ wha is he locaon o he responsible lesions in he nervous sysem? ▪ wha is he underlying pahophysiology causing he disease? o he nervous sysem can be divided ino he cenral nervous sysem (CNS) and he peripheral nervous sysem (PNS). o Special echniques ▪ meningeal signs make sure here is no injury or racure o he cervical verebrae or cervical cord. This oen requires radiologic evaluaon. Brudzinski’s sign Anaomy o Brain- CNS ▪ he brain has our regions: he cerebrum, he diencephalon, he brainsem, and he cerebellum. Each cerebral hemisphere is subdivided ino ronal, parieal, emporal, and occipial lobes. ▪ The brain consiss o Gray maer and Myelinaed neuronal axons, or whie maer. ▪ Imporan srucures include he basal ganglia, he halamus, he hypohalamus, he brainsem (midbrain, pawns, and medulla), which connecs he corex wih he spinal cord, he recular acvang (arousal) sysem linked o consciousness, and he cerebellum o spinal cord- CNS ▪ he spinal cord exends rom he medulla o he rs or second lumbar verebrae ▪ he spinal cord is divided ino 5 segmens: cervical (C1 o C8), horacic (T1 o T12), lumbar (L1 o L5), sacral (S1 o S5), and Coccygeal. is roos an ou like a horses ail a L1 o L2, he cauda equina. ▪ conains imporan moor and sensory nerve pahways ha exi and ener he cour via anerior and poserior nerve roos and spinal and peripheral nerves. ▪ Mediaes he monosynapc muscle srech reexes. o Peripheral nervous sysem ▪ he peripheral nervous sysem consiss o he 12 pairs o cranial nerves and he spinal and peripheral nerves. Mos peripheral nerves conain boh moor and sensory bers. ▪ The 12 pairs o cranial nerves emerge rom he cranial vaul hrough skull oramina and canals o srucures in he head and neck. Syncope, dizziness, and lighheadedness o syncope is complee bu emporary loss o consciousness rom decreased cerebral blood ow, commonly called ainng. o Ge a complee descripon o he even including seng and riggers, any warning signs, posion, and duraon. Wha brough on he episode? Could voices be heard while passing ou and in coming o? How rapid was recovery? Were ose in ose slow or as? ▪ Young people wih emoonal sress and warning sympoms o ushing, warmh, or nausea may have vasopressor syncope o slow onse, slow ose. ▪ Consider seizures, neurocardiogenic condions such as vasovagal syncope, posural achycardia syndrome, carod sinus syncope, and orhosac hypoension, arrhyhmias, especially venricular achycardia and Brady arryhmias, oen wih syncope o sudden onse and ose. o Also ask i anyone observed he episode. Wha did he paen look like beore, during, and aer he episode? Wha is here any seizure like movemen o he arms or legs? Any inconnence o he bladder or bowel? ▪ Tonic clonic moor acviy, inconnence, and poscal sae in generalized seizures. Unlike in syncope, ongue bing or bruising o limbs may occur. ▪ Depending on he ype o seizure, here may be loss o consciousness or abnormal eelings, hough processes, and sensaons, including smells, as well as abnormal movemens. Headaches o Tension headache ▪ Common characeriscs locaon is variable, oen described as a pressing or ghening pain, mild o moderae and inensiy. Onse is gradual, duraon is minues o days. ▪ Associaed sympoms, provoking and relieving acors. Somemes phoophobia, phoophobia, nausea absen increased by susained muscle ension, as in driving or yping. Decrease possibly by massage, or relaxaon. o Migraine (wih aura, wihou aura, varians) ▪ common characeriscs locaon is unilaeral in 70% bironal or global and 30% qualiy is hrobbing or aching, variable and severiy, onse is airly rapid, peaks in one o wo hours. Duraon is 4 o 72 hours. ▪ Associaed sympoms, provoking and relieving acors. Nausea, voming, phoophobia, phonophobia, visual auras, moor or as aecng hand or arm, sensory or as. Increased by alcohol, cerain oods, ension, noise, brigh ligh. More common premaurely. Decreased by quie dark room, sleep. o Cluser headache ▪ Common characeriscs locaon is unilaeral, usually behind or around he eye. Qualiy is deep, connuous, severe pain. Onse abrup, peaks, wihin minues. Duraon is up o hree hours. ▪ associaed sympoms, provoking and relieving acors. Lacrimaon, rhinorrhea, miosis, piosis, eyelid edema, conjuncval inecon. Increased sensiviy o alcohol during some episodes. o analgesic rebound headache ▪ common characeriscs locaon is previous headache paern. Qualiy is variable. Onse is variable. And duraon depends on he prior headache paern. ▪ Associaed sympoms, provoking and relieving acors. Depends on prior headache paern increased by ever, carbon monoxide, hypoxia, wihdrawal o caeine, and oher headache riggers decreased depending on he cause. o Headaches rom eye disorders ▪ common characeriscs locaon around and over he eyes, may radiae o he Occipial area. qualiy is seady and aching and dull. Answer is gradual. Duraon is variable. ▪ Associaed sympoms, provoking and relieving acors. eye ague, sandy sensaon and eyes, redness o he conjuncva. Increased by prolonged use o he eyes, parcularly or close work period decreases by resng he eyes. o acue glaucoma ▪ common characeriscs locaon in and around he eye. Qualiy is seady, aching, and oen severe. Onse is oen rapid. Duraon is variable, may depend on reamen. ▪ Associaed sympoms, provoking and relieving acors. Diminished vision, somemes nausea and voming. Increased somemes by drops ha dilae he pupils. o Headache rom sinusis ▪ Common characeriscs locaon is usually above he eye or over maxillary sinus. Qualiy is aching or hrobbing, variable and severiy, consider possible migraine. Onse is variable. Duraon is oen several hours a a me recurring over days or longer. ▪ associaed sympoms, provoking and relieving acors. Local enderness, nasal congeson, ooh pain, discharge, and ever. Increased by coughing, sneezing, or jarring o he head, decrease by nasal decongesans, and anbiocs. o Meningis ▪ common characeriscs locaon is generalized, qualiy is seady or hrobbing, very severe. Ose is airly rapid. Duraon is variable, usually days. Fever, s neck, phoophobia, change in menal saus. Can decrease rom immediae anbiocs unl viral versus bacerial cause idened. o Subarachnoid hemorrhage ▪ Locaon is generalized qualiy is severe, he wors headache o my lie. Onse is usually abrup, predominan sympoms may occur. Duraon is variable, usually days. ▪ nausea, voming, possibly loss o consciousness, neck pain, increased rebleeding, increased inracranial pressure, cerebral edema. Decreased by subspecialy reamens. o Brain umor ▪ locaon varies wih he locaon o he umor. Qualiy is aching, seady, variable in inensiy. Onse is variable. Duraon is oen brie. ▪ Increase by coughing, rebleeding, increase inracranial pressure, cerebral edema. Decreased by subspecialy reamens. o Gian cell areris ▪ locaons near he involved arery, oen he emporal, also he occipial, age relaed. Qualiy is hrobbing, generalized, persisen, oen severe. Onse is gradual or rapid. And duraon is variable. ▪ Tenderness o he adjacen scalp, ever and 50%, ague, weigh loss, new headache and 60%, jaw claudicaon in 50%, visual loss or blindness in 15 o 20%, polymyalgia rheumaca and 50%, increased by movemen o neck and shoulders and oen decreased by seroids. o Posconcussion headache ▪ locaon is oen bu no always localized o he injured area. Qualiy is generalized, dull, aching, consan. Onse is wihin wo hours o one o wo days o he injury. Duraon is weeks, monhs, or even years. ▪ Drowsiness, poor concenraon, conusion, memory loss, blurred vision, dizziness, irriabiliy, reslessness, ague. Increased by menal and physical exeron, sraining, sooping, emoonal exciemen, alcohol. Decreased by res. o Crania neuralgia-rigeminal neuralgia ▪ locaon is he cheek, jaws, lips, or gums, rigeminal nerve divisions wo and hree more han one qualiy is shock like, sabbing, burning, severe pain. Onse is abrup, proximal. Duraon each jab las seconds bu reoccurs a inervals o seconds or minues. ▪ Exhauson rom recurren pain. Increased by ouching cerain areas o he lower ace or mouh, chewing, alking, brushing eeh. Decreased by medicaon, neurovascular decompression. Cranial nerve assessmen o I- olacory ▪ sense o smell Tes sense o smell on each side o loss o smell and sinus condions, head rauma, smoking, aging, cocaine use, Parkinson's disease. o II- opc ▪ Vision Assess visual acuiy. Check visual elds. Inspec opc discs. o Blindness, hemianopsia, papilledema, opc arophy, glaucoma o III-oculomoor ▪ pupillary consricon, opening o he eye, mos exraocular movemens. inspec size and shape o pupils. Tes pupillary reacons o ligh. I abnormal, es reacons o near eor. o Blindness, cranial nerve 3 paralysis, onic pupils; Horner syndrome may aec ligh reacons. o IV-Trochlear ▪ downward, inernal roaon o he eye Assess exraocular movemens o Srabismus and binocular diplopia and cranial nerve 3, 4 and six neuropahy. Diplopia in eye muscle disorders rom myashenia gravis, rauma, hyroid ophhalmopahy, And inernuclear ophhalmoplegia, nysagmus o V-rigeminal ▪ Moor-emporal and maseer muscles, laeral perygoids. Palpae he conracons o emporal and masseer muscles. Tes pain and ligh ouch on ace in Ophhalmic, maxillary, and mandibular zones. o moor or sensory loss rom lesions o cranial nerve ve or is higher moor pahways. ▪ Sensory-acial, he nerve has hree divisions; Ophhalmic, maxillary, mandibular. o VI-Abducens ▪ laeral deviaon o he eye o VII-acial ▪ Moor-acial movemens, including hose o acial expression, closing he eye, closing he mouh. Ask he paen o raise boh eyebrows brown, close eyes ghly, show eeh, smile, and pu ou cheeks. ▪ Sensory ase or saly, swee, sour, and bier subsances on anerior 2/3 o ongue; Sensaon rom he ear. o Weakness rom lesion o peripheral nerve, as in bells palsy, or o CNS, as in a sroke. o VIII- acousc and vesbular ▪ The weber es is o deermine which side o he ears is he one ha has hearing loss. ▪ Sound laeralizes o impaired ear. ▪ Room noise is no well heard, deecon o vibraons improves. And unilaeral Sensorineural loss, sound is heard in he good ear where air conducon is greaer han bone conducon. In conducve loss laeralizaon is o he aeced ear where bone conducon is greaer han air conducon. Compare air and bone conducon (rinne es), in sensorineural hearing loss, sound is heard longer hrough air han bone. And conducve loss sound is heard hrough bone longer han air. o IX-Glossopharyngeal ▪ Moor-pharynx ▪ Sensory-poserior porons o he eardrum and ear canal, he pharynx, and he poserior ongue, including ase A weakened palle or pharynx impairs swallowing Hoarseness and vocal cord paralysis; Nasal voice and paralysis o palae. In unilaeral paralysis, one side o he palle ails o rise and, ogeher wih he uvula, is pulled oward normal side. Deviaed uvula, palaal paralysis in CVA. absen gag reex is oen normal o X-vagus ▪ Moor-palae, pharynx, larynx ▪ Sensory-Pharynx and larynx See glossopharyngeal o XI- spinal accessory ▪ Moor- sernocleidomasoid, upper poron o he rapezius Assess muscles or bulk, and volunary movemens, and srengh o shoulder shrug. o A rophy, asciculaons, weakness sernocleidomasoid muscles, assess srengh as head urns agains your hand. o Weakness o sernocleidomasoid muscle when head urns o opposie side. o XII- hypoglossal ▪ Moor-ongue Lisen o paens arculaon. Inspec he resng ongue. Inspec he proruded ongue. o Dysarhria rom damage o cranial nerve 10 or 12. o Arophy, asciculaons in ALS, polio o in a unilaeral corcal lesion, he proruded ongue deviaes away rom he side o he corcal lesion; In cranial nerve 12 lesion, ongue deviaes o he weak side. Inracranial pressure (ICP) o Papilledema o he opc disc: elevaed ICP causes ino axonal edma along he opc nerve leading o engorgemen and swelling o he opc disc. ▪ Pink, hyperemic, loss o venous pulsaons, disc more visible, disc swollen wih blurred margins, physiologic cup no visible. ▪ Headache, blurred vision, eeling less aler han usual, voming, changes in behavior, weakness or problems wih moving or alking, lack o energy or sleepiness. Cerebrovascular acciden (CVA) o Sroke is a sudden neurologic deci caused by cerebral vascular ischemia in 87% or hemorrhagic in 13%. hemorrhagic srokes maybe inracerebral 10% o all srokes, or subarachnoid 3% o all srokes. o sroke warning signs and sympoms ▪ ace drooping ▪ arm weakness ▪ Speech diculy ▪ call 911 i someone shows any o hese signs o oher imporan sympoms ▪ sudden numbness or weakness o he leg, arm, or ace, especially on one side o he body. ▪ Sudden conusion or rouble speaking or undersanding speech. ▪ Sudden rouble seeing in one or boh o he eyes. ▪ Sudden rouble walking, dizziness, loss o balance or coordinaon. ▪ Sudden severe headache wih no known cause. Transien ischemic aack (TIA) o Decreased vascular perusion resuls in sudden ocal bu ransien brain dysuncon, Or in permanen neurological decis and sroke, as deermined by neuro diagnosc imaging. Deecng AT A comma in episode o neurologic dysuncon ha resolves wihin 24 hours, is imporan, in he rs hree monhs aer a Tia, subsequen sroke occurs in approximaely 15% o paens. Chapter 25 Children: Infancy through Adolescence Techniques o examinaon o Inans and young children ▪ perorm non disurbing maneuvers early and poenally disressing maneuvers oward he end. For example, palpae he head and neck and ausculae he hear and lungs early; Examine he ears and mouh and palpae he abdomen near he end. I he child repors pain in he area examine ha par las. ▪ Approached he inan gradually, using a oy or objec or disracon. ▪ Perorm as much o he examinaon as possible wih he inan in he parens lap. ▪ Speak soly o he inan or mimic he inan sounds o arac aenon. ▪ I he inan is cranky, make sure he or she is well ed beore proceeding. ▪ Ask a paren abou he inan srengh o elici useul developmenal and parenng inormaon. ▪ Do no expec o do head o oe examinaon in a specic order. Work wih wha he inan gives you and save he mouh and ear examinaon or las. o Older children and adolescens ▪ use he same sequence as wih aduls, excep examine he mos painul areas las. o Apgar score ▪ Score each newborn according o he able a one and ve minues aer birh according o hree poin scale. ▪ i he ve minue score is eigh or more, proceed o a more complee examinaon.