NR509 Final Chapter 24 Neurological PDF

Summary

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.

Full Transcript

▪ neck pain wih bilaeral weakness and pareshesia in boh upper and lower exremies, oen wih urinary requency. Hand clumsiness, palmer pareshesia, and gai changes maybe suble. Neck exion oen exacerbaes sympoms...

▪ neck pain wih bilaeral weakness and pareshesia in boh upper and lower exremies, oen wih urinary requency. Hand clumsiness, palmer pareshesia, and gai changes maybe suble. Neck exion oen exacerbaes sympoms. ▪ Physical signs hyperreexia; Clonus a he wris, knee, or ankle; Exensor planar reexes (posive Babinski signs); and gai disurbances. May also see Lhermie sign: neck exion wih resulng sensaon o elecrical shock radiang down he spine. Conrmaon o cervical myelopahy warrans neck immobilizaon and neurosurgical evaluaon. Chapter 24 Nervous System Techniques o examinaon o When neurologic disease is suspeced, wo complemenary quesons should be addressed hroughou your assessmen. These quesons are no answered separaely, bu ineracvely as you learn abou he paen during he inerview and esablish your neurologic ndings ▪ wha is he locaon o he responsible lesions in he nervous sysem? ▪ wha is he underlying pahophysiology causing he disease? o he nervous sysem can be divided ino he cenral nervous sysem (CNS) and he peripheral nervous sysem (PNS). o Special echniques ▪ meningeal signs make sure here is no injury or racure o he cervical verebrae or cervical cord. This oen requires radiologic evaluaon. Brudzinski’s sign Anaomy o Brain- CNS ▪ he brain has our regions: he cerebrum, he diencephalon, he brainsem, and he cerebellum. Each cerebral hemisphere is subdivided ino ronal, parieal, emporal, and occipial lobes. ▪ The brain consiss o Gray maer and Myelinaed neuronal axons, or whie maer. ▪ Imporan srucures include he basal ganglia, he halamus, he hypohalamus, he brainsem (midbrain, pawns, and medulla), which connecs he corex wih he spinal cord, he recular acvang (arousal) sysem linked o consciousness, and he cerebellum o spinal cord- CNS ▪ he spinal cord exends rom he medulla o he rs or second lumbar verebrae ▪ he spinal cord is divided ino 5 segmens: cervical (C1 o C8), horacic (T1 o T12), lumbar (L1 o L5), sacral (S1 o S5), and Coccygeal. is roos an ou like a horses ail a L1 o L2, he cauda equina. ▪ conains imporan moor and sensory nerve pahways ha exi and ener he cour via anerior and poserior nerve roos and spinal and peripheral nerves. ▪ Mediaes he monosynapc muscle srech reexes. o Peripheral nervous sysem ▪ he peripheral nervous sysem consiss o he 12 pairs o cranial nerves and he spinal and peripheral nerves. Mos peripheral nerves conain boh moor and sensory bers. ▪ The 12 pairs o cranial nerves emerge rom he cranial vaul hrough skull oramina and canals o srucures in he head and neck. Syncope, dizziness, and lighheadedness o syncope is complee bu emporary loss o consciousness rom decreased cerebral blood ow, commonly called ainng. o Ge a complee descripon o he even including seng and riggers, any warning signs, posion, and duraon. Wha brough on he episode? Could voices be heard while passing ou and in coming o? How rapid was recovery? Were ose in ose slow or as? ▪ Young people wih emoonal sress and warning sympoms o ushing, warmh, or nausea may have vasopressor syncope o slow onse, slow ose. ▪ Consider seizures, neurocardiogenic condions such as vasovagal syncope, posural achycardia syndrome, carod sinus syncope, and orhosac hypoension, arrhyhmias, especially venricular achycardia and Brady arryhmias, oen wih syncope o sudden onse and ose. o Also ask i anyone observed he episode. Wha did he paen look like beore, during, and aer he episode? Wha is here any seizure like movemen o he arms or legs? Any inconnence o he bladder or bowel? ▪ Tonic clonic moor acviy, inconnence, and poscal sae in generalized seizures. Unlike in syncope, ongue bing or bruising o limbs may occur. ▪ Depending on he ype o seizure, here may be loss o consciousness or abnormal eelings, hough processes, and sensaons, including smells, as well as abnormal movemens. Headaches o Tension headache ▪ Common characeriscs locaon is variable, oen described as a pressing or ghening pain, mild o moderae and inensiy. Onse is gradual, duraon is minues o days. ▪ Associaed sympoms, provoking and relieving acors. Somemes phoophobia, phoophobia, nausea absen increased by susained muscle ension, as in driving or yping. Decrease possibly by massage, or relaxaon. o Migraine (wih aura, wihou aura, varians) ▪ common characeriscs locaon is unilaeral in 70% bironal or global and 30% qualiy is hrobbing or aching, variable and severiy, onse is airly rapid, peaks in one o wo hours. Duraon is 4 o 72 hours. ▪ Associaed sympoms, provoking and relieving acors. Nausea, voming, phoophobia, phonophobia, visual auras, moor or as aecng hand or arm, sensory or as. Increased by alcohol, cerain oods, ension, noise, brigh ligh. More common premaurely. Decreased by quie dark room, sleep. o Cluser headache ▪ Common characeriscs locaon is unilaeral, usually behind or around he eye. Qualiy is deep, connuous, severe pain. Onse abrup, peaks, wihin minues. Duraon is up o hree hours. ▪ associaed sympoms, provoking and relieving acors. Lacrimaon, rhinorrhea, miosis, piosis, eyelid edema, conjuncval inecon. Increased sensiviy o alcohol during some episodes. o analgesic rebound headache ▪ common characeriscs locaon is previous headache paern. Qualiy is variable. Onse is variable. And duraon depends on he prior headache paern. ▪ Associaed sympoms, provoking and relieving acors. Depends on prior headache paern increased by ever, carbon monoxide, hypoxia, wihdrawal o caeine, and oher headache riggers decreased depending on he cause. o Headaches rom eye disorders ▪ common characeriscs locaon around and over he eyes, may radiae o he Occipial area. qualiy is seady and aching and dull. Answer is gradual. Duraon is variable. ▪ Associaed sympoms, provoking and relieving acors. eye ague, sandy sensaon and eyes, redness o he conjuncva. Increased by prolonged use o he eyes, parcularly or close work period decreases by resng he eyes. o acue glaucoma ▪ common characeriscs locaon in and around he eye. Qualiy is seady, aching, and oen severe. Onse is oen rapid. Duraon is variable, may depend on reamen. ▪ Associaed sympoms, provoking and relieving acors. Diminished vision, somemes nausea and voming. Increased somemes by drops ha dilae he pupils. o Headache rom sinusis ▪ Common characeriscs locaon is usually above he eye or over maxillary sinus. Qualiy is aching or hrobbing, variable and severiy, consider possible migraine. Onse is variable. Duraon is oen several hours a a me recurring over days or longer. ▪ associaed sympoms, provoking and relieving acors. Local enderness, nasal congeson, ooh pain, discharge, and ever. Increased by coughing, sneezing, or jarring o he head, decrease by nasal decongesans, and anbiocs. o Meningis ▪ common characeriscs locaon is generalized, qualiy is seady or hrobbing, very severe. Ose is airly rapid. Duraon is variable, usually days. Fever, s neck, phoophobia, change in menal saus. Can decrease rom immediae anbiocs unl viral versus bacerial cause idened. o Subarachnoid hemorrhage ▪ Locaon is generalized qualiy is severe, he wors headache o my lie. Onse is usually abrup, predominan sympoms may occur. Duraon is variable, usually days. ▪ nausea, voming, possibly loss o consciousness, neck pain, increased rebleeding, increased inracranial pressure, cerebral edema. Decreased by subspecialy reamens. o Brain umor ▪ locaon varies wih he locaon o he umor. Qualiy is aching, seady, variable in inensiy. Onse is variable. Duraon is oen brie. ▪ Increase by coughing, rebleeding, increase inracranial pressure, cerebral edema. Decreased by subspecialy reamens. o Gian cell areris ▪ locaons near he involved arery, oen he emporal, also he occipial, age relaed. Qualiy is hrobbing, generalized, persisen, oen severe. Onse is gradual or rapid. And duraon is variable. ▪ Tenderness o he adjacen scalp, ever and 50%, ague, weigh loss, new headache and 60%, jaw claudicaon in 50%, visual loss or blindness in 15 o 20%, polymyalgia rheumaca and 50%, increased by movemen o neck and shoulders and oen decreased by seroids. o Posconcussion headache ▪ locaon is oen bu no always localized o he injured area. Qualiy is generalized, dull, aching, consan. Onse is wihin wo hours o one o wo days o he injury. Duraon is weeks, monhs, or even years. ▪ Drowsiness, poor concenraon, conusion, memory loss, blurred vision, dizziness, irriabiliy, reslessness, ague. Increased by menal and physical exeron, sraining, sooping, emoonal exciemen, alcohol. Decreased by res. o Crania neuralgia-rigeminal neuralgia ▪ locaon is he cheek, jaws, lips, or gums, rigeminal nerve divisions wo and hree more han one qualiy is shock like, sabbing, burning, severe pain. Onse is abrup, proximal. Duraon each jab las seconds bu reoccurs a inervals o seconds or minues. ▪ Exhauson rom recurren pain. Increased by ouching cerain areas o he lower ace or mouh, chewing, alking, brushing eeh. Decreased by medicaon, neurovascular decompression. Cranial nerve assessmen o I- olacory ▪ sense o smell Tes sense o smell on each side o loss o smell and sinus condions, head rauma, smoking, aging, cocaine use, Parkinson's disease. o II- opc ▪ Vision Assess visual acuiy. Check visual elds. Inspec opc discs. o Blindness, hemianopsia, papilledema, opc arophy, glaucoma o III-oculomoor ▪ pupillary consricon, opening o he eye, mos exraocular movemens. inspec size and shape o pupils. Tes pupillary reacons o ligh. I abnormal, es reacons o near eor. o Blindness, cranial nerve 3 paralysis, onic pupils; Horner syndrome may aec ligh reacons. o IV-Trochlear ▪ downward, inernal roaon o he eye Assess exraocular movemens o Srabismus and binocular diplopia and cranial nerve 3, 4 and six neuropahy. Diplopia in eye muscle disorders rom myashenia gravis, rauma, hyroid ophhalmopahy, And inernuclear ophhalmoplegia, nysagmus o V-rigeminal ▪ Moor-emporal and maseer muscles, laeral perygoids. Palpae he conracons o emporal and masseer muscles. Tes pain and ligh ouch on ace in Ophhalmic, maxillary, and mandibular zones. o moor or sensory loss rom lesions o cranial nerve ve or is higher moor pahways. ▪ Sensory-acial, he nerve has hree divisions; Ophhalmic, maxillary, mandibular. o VI-Abducens ▪ laeral deviaon o he eye o VII-acial ▪ Moor-acial movemens, including hose o acial expression, closing he eye, closing he mouh. Ask he paen o raise boh eyebrows brown, close eyes ghly, show eeh, smile, and pu ou cheeks. ▪ Sensory ase or saly, swee, sour, and bier subsances on anerior 2/3 o ongue; Sensaon rom he ear. o Weakness rom lesion o peripheral nerve, as in bells palsy, or o CNS, as in a sroke. o VIII- acousc and vesbular ▪ The weber es is o deermine which side o he ears is he one ha has hearing loss. ▪ Sound laeralizes o impaired ear. ▪ Room noise is no well heard, deecon o vibraons improves. And unilaeral Sensorineural loss, sound is heard in he good ear where air conducon is greaer han bone conducon. In conducve loss laeralizaon is o he aeced ear where bone conducon is greaer han air conducon. Compare air and bone conducon (rinne es), in sensorineural hearing loss, sound is heard longer hrough air han bone. And conducve loss sound is heard hrough bone longer han air. o IX-Glossopharyngeal ▪ Moor-pharynx ▪ Sensory-poserior porons o he eardrum and ear canal, he pharynx, and he poserior ongue, including ase A weakened palle or pharynx impairs swallowing Hoarseness and vocal cord paralysis; Nasal voice and paralysis o palae. In unilaeral paralysis, one side o he palle ails o rise and, ogeher wih he uvula, is pulled oward normal side. Deviaed uvula, palaal paralysis in CVA. absen gag reex is oen normal o X-vagus ▪ Moor-palae, pharynx, larynx ▪ Sensory-Pharynx and larynx See glossopharyngeal o XI- spinal accessory ▪ Moor- sernocleidomasoid, upper poron o he rapezius Assess muscles or bulk, and volunary movemens, and srengh o shoulder shrug. o A rophy, asciculaons, weakness sernocleidomasoid muscles, assess srengh as head urns agains your hand. o Weakness o sernocleidomasoid muscle when head urns o opposie side. o XII- hypoglossal ▪ Moor-ongue Lisen o paens arculaon. Inspec he resng ongue. Inspec he proruded ongue. o Dysarhria rom damage o cranial nerve 10 or 12. o Arophy, asciculaons in ALS, polio o in a unilaeral corcal lesion, he proruded ongue deviaes away rom he side o he corcal lesion; In cranial nerve 12 lesion, ongue deviaes o he weak side. Inracranial pressure (ICP) o Papilledema o he opc disc: elevaed ICP causes ino axonal edma along he opc nerve leading o engorgemen and swelling o he opc disc. ▪ Pink, hyperemic, loss o venous pulsaons, disc more visible, disc swollen wih blurred margins, physiologic cup no visible. ▪ Headache, blurred vision, eeling less aler han usual, voming, changes in behavior, weakness or problems wih moving or alking, lack o energy or sleepiness. Cerebrovascular acciden (CVA) o Sroke is a sudden neurologic deci caused by cerebral vascular ischemia in 87% or hemorrhagic in 13%. hemorrhagic srokes maybe inracerebral 10% o all srokes, or subarachnoid 3% o all srokes. o sroke warning signs and sympoms ▪ ace drooping ▪ arm weakness ▪ Speech diculy ▪ call 911 i someone shows any o hese signs o oher imporan sympoms ▪ sudden numbness or weakness o he leg, arm, or ace, especially on one side o he body. ▪ Sudden conusion or rouble speaking or undersanding speech. ▪ Sudden rouble seeing in one or boh o he eyes. ▪ Sudden rouble walking, dizziness, loss o balance or coordinaon. ▪ Sudden severe headache wih no known cause. Transien ischemic aack (TIA) o Decreased vascular perusion resuls in sudden ocal bu ransien brain dysuncon, Or in permanen neurological decis and sroke, as deermined by neuro diagnosc imaging. Deecng AT A comma in episode o neurologic dysuncon ha resolves wihin 24 hours, is imporan, in he rs hree monhs aer a Tia, subsequen sroke occurs in approximaely 15% o paens. Chapter 25 Children: Infancy through Adolescence Techniques o examinaon o Inans and young children ▪ perorm non disurbing maneuvers early and poenally disressing maneuvers oward he end. For example, palpae he head and neck and ausculae he hear and lungs early; Examine he ears and mouh and palpae he abdomen near he end. I he child repors pain in he area examine ha par las. ▪ Approached he inan gradually, using a oy or objec or disracon. ▪ Perorm as much o he examinaon as possible wih he inan in he parens lap. ▪ Speak soly o he inan or mimic he inan sounds o arac aenon. ▪ I he inan is cranky, make sure he or she is well ed beore proceeding. ▪ Ask a paren abou he inan srengh o elici useul developmenal and parenng inormaon. ▪ Do no expec o do head o oe examinaon in a specic order. Work wih wha he inan gives you and save he mouh and ear examinaon or las. o Older children and adolescens ▪ use he same sequence as wih aduls, excep examine he mos painul areas las. o Apgar score ▪ Score each newborn according o he able a one and ve minues aer birh according o hree poin scale. ▪ i he ve minue score is eigh or more, proceed o a more complee examinaon.

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