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Reversible Cerebral Vasoconstriction Syndrome (RCVS) uye Posterior Reversible Encephalopathy Syndrome (PRES): Recurrent Thunderclap Headaches, String-of-Beads Vasospasm, Vasogenic Occipital Edema, uye Ropa Kudzora

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Reversible Cerebral Vasoconstriction Syndrome (RCVS, yaimbozivikanwa seCall-Fleming syndrome) uye Posterior Reversible Encephalopathy Syndrome (PRES, inonziwo reversible posterior leukoencephalopathy syndrome) zvinhu zviviri zviri kudhumhana, acute neurovascular emergency izvo zvinogovana akawanda emamwe makiriniki anokonzeresa vapfumi,mplamp postamp; immunosuppressants, uye autonomic storms), inowanzogara mumurwere mumwechete (10 kusvika 35 muzana inopindirana), uye inogona kukonzera ** kubatwa kwese, kurasikirwa kwekuona, kukanganisa kwetsinga, ischemic stroke, uye intracranial hemorrhage **. Asi ivo vanomuka kubva ku ** inopesana necerebrovascular kukundikana ** izvo zvinoda ** diametrically yakatarisana neropa reropa zvinangwa mudhipatimendi rekukurumidzira **: - Reversible Cerebral Vasoconstriction Syndrome (RCVS) inotungamirirwa nekamwe kamwe, kwenguva pfupi kuvhiyiwa mu cerebral sympathetic vascular tone ** iyo inokonzera multifocal segmental vasoconstriction (vasospasm) ye-mahombe-uye-kati-kati-sized cerebral arteries , zvichiita kuti chitarisiko" chitarisiko / CT/R string" angiography inogadzirisa zvachose mukati memavhiki gumi nemaviri. Chiratidzo chayo chekiriniki ndeche ** inowanzoitika, inoputika "kutinhira kwemusoro" (kusvika gumi-kunze-kwe-10 peak kuomarara pasi pemasekonzi makumi matanhatu, kazhinji kukonzereswa nekusangana pabonde, kushushikana kweValsalva, kukosora, kurovedza muviri, kugeza, kana manzwiro) inodzokororwa pamusoro pe1 kusvika ku3 mishonga inokonzeresa nemavhiki matatu, (SSRIs, SNRIs, triptans, nasal decongestants se pseudoephedrine/oxymetazoline, cannabis, cocaine, amphetamines, ergotamines) kana ** yekutanga postpartum state **. Zvakaoma, ** kudonhedza zvine hukasha kuderera kweropa muRCVS kunofa nenzara uropi kure kune tsinga dzakasimba uye inonzera yakadirwa ischemic sitiroko **. - **Posterior Revsible Encephalopathyyndrome (PRES)** inotungamirirwa ne **acute kukundikana kwecerebral autorelation (breakthrough hyperperfusion)**, apo BP inokwira nokukurumidza inopfuura yepamusoro autoregulatory muganho wecerebral arterioles (inowanzo kureva arterial pressure $> 150\text{0g 6 kusvika 1mm)nhitors (tacrolimus, cyclosporine)**, **chemotherapy/antVE agents (bevazumab, splatin)* renal failure, kana eclampsia inokuvadza zvakananga ropa-brain barrier endothelium. Nekuti ** posterior vertebrobasilar circulation (occipital uye parietal lobes) ** ine sparse inodzivirira inonzwira tsitsi adrenergic innervation kana ichienzaniswa necarotid kutenderera, hydrostatic fluid inoputika nepakati pemashure eropa-brain barriers kutanga, zvichikonzera ** symmetric parieto-occipital bofu nehuropi hwehuropi * kana cortex cortex. kuona, kugomara/kurova holocephalic headache, encephalopathy/confusion,ye generalized tonic-clonic seizures. Zvakaoma, ** nekukurumidza uye nekudzikisa kuderera kweMean Arterial Pressure (MAP) ne20 kusvika ku25 muzana mukati mekutanga kwe1 kusvika kuawa 2 neIV Nicardipine, Clevidipine, kana Labetalol ndiyo inonyanya kuponesa hupenyu hweHypertensive PRES **.

Kana paine munhu akangoerekana anzwa kutinhira kwemusoro, kutemwa nemusoro kasingaperi mushure mekuita nhamburiko kana kuti orgasm, pfari nyowani, kana kurasikirwa nekuona kamwe kamwe / kuvhiringika neBP, fonera nharaunda yako. nhamba dze emergency pakarepo. Ongororawo hama dzedu nhungamiro pa subbarachnoid hemorrhage, thunderclap headache, uye kuputika kweuropi aneurysm, eclampsia seizures, HELLP syndrome, postpartum preeclampsia, uye magnesium triage,uye hemorrhagic sitiroko, intracerebral bleed, uye blood pressure triage.

Ita izvi ikozvino

  1. **Bata yega yega Thunderclap Headache (ichipinda mukati memasekonzi makumi matanhatu) sechimbichimbi kusvika aneurysmal Subarachnoid Hemorrhage (SAH), RCVS, Cerebral Venous Sinus Thrombosis (CVST), uye Cervical Artery Dissection hazvibvumidzwe. kana kubvunza dhairekitori redu repasi rose re nhamba dze emergency.
  2. Ziva Pathognomonic Clue yeRCVS: Recurrent Thunderclap Headaches Over Days + The RCVS2 Score. Nepo ruptured saccular berry aneurysm (SAH) kazhinji inokonzeresa imwe njodzi yekutinhira kwemusoro nekuoma kwemutsipa uye basal cistern blood, kutinhira 1 kuputika kwemusoro 1 kusvika kumazuva gumi nemana) kukonzereswa nekuita bonde/orgasm, defecation/Valsalva, kusimudza uremu, kukosora, kana kugeza zviri pathognomonic yeRCVS. Verengai \(\text{RCVS}_2\) Score (kusiyana \(-2\) kusvika \(+10\); chibodzwa \(\ge 5\) chine \(90\%\) senitivity uye \(99\%\) chaiyo yeRCVS).
  3. Ongorora uye MISA Mushonga Unokanganisa Pakarepo (Iyo Inopikisa Mishonga-Inomutsa Rondedzero):
  4. ** Kana RCVS Inofungidzirwa: ** Ibva warega pakarepo ** VOSE vasoactive uye serotonergic agents **: ** Triptans ** (sumatriptan, rizatriptan, inowanzorongedzerwa zvisizvo muER kana kutinhira kwemusoro kusinganzwisisike semigraine), ** Ergotamines ** (dihydroergotamine) * * (dihydroergotamine) uye SNRISSDRISSDRISSDRIs (dihydroergotamine). fluoxetine, venlafaxine), Over-the-Counter Sympathomimetic Decongestants (pseudoephedrine, phenylephrine, oxymetazoline nasal spray), Cannabis/THC (inotungamira trigger yeRCVS), Cocaine, Amphetamines, MDMA/Energy, uye Divi
  5. Kana PRES Inofungidzirwa: Bata kana kushandura kukanganisa **endothelial toxin kana immunosuppressant ** mukubvunzana nevanotapurirana/oncology nyanzvi: Tacrolimus (FK506), Cyclosporine, Sirolimus, Bevacizumab,Subininizumab,Subininizumab (Subininizuma,Kisibinina), Sorafenib, Pazopanib), Cisplatin, Oxaliplatin, Gemcitabine, Cytarabine, kana High-Dose Corticosteroids.
  6. ** Ita Iyo Yakarurama Yekudzvanya Kweropa Strategy (Nei RCVS nePRES Zviine Mitemo Inopesana neBP):**
  7. MuPure or Predominant PRES neHypertension Yakanyanya: Ibva yadzikira Mean Arterial Pressure (MAP) ne20% kusvika 25% mumaawa 1 kusvika maviri ekutanga (ichitarisa systolic BP inosvika \(140\text{kusvika }160\text{ mmHg}\)) uchishandisa titratable to\(5**cardiven intra }15\text{ mg/h}\) IV)**, Clevidipine (\(1\text{ kusvika }16\text{mg/h}\) IV), kana Labetalol (\(10\text{ kusvika }20\text{mg}\) IV bolus then \(2\text{ to }8\text{mg/min}\)). Kubvisa iyo hydrostatic hyperperfusion pressure inobvumira iyo posterior ropa-brain barriers kuti igadzirise uye vasogenic edema kugadzirisa mukati memazuva.
  8. MuRCVS (String-of-Beads Vasospasm): USAGARA wadonhedza BP zvine hukasha munzvimbo yakaderera-yakajairika kana kuti hypotensive range. Panguva yekushanda kwecerebral vasoconstriction, kudonhedza systolic blood pressure kunokonzera nzara cortex yakadzika pasi pemvura yakamanikana uye nechemberi kwemvura, prechemane per cerebral arteries. shamhu**. MuRCVS, rapa hypertension yakanyanya (\(> 180/110\text{ mmHg}\)) zvinyoro nyoro uchishandisa calcium channel blockers (Oral kana IV Nimodipine [\(30\text{ kusvika }60\text{mg}\) PO maawa mana ega ega], Verapamil, kana Nicardipine) kuti udzivise arterierial art panguva imwe cheteyo.
  9. ** USAFANIRA Kushandisa High-Dose Glucocorticoids (Methylprednisolone, Prednisone, kana Dexamethasone) muInofungidzirwa RCVS.** Apo vanachiremba vekukurumidzira vanoona "tambo-ye-beads" yakawanda ye "tambo-ye-beads" inoderera paCT angiography, dzimwe nguva vanovhiringidza RCVS ne **Primary Angiitis yeCentral Nervous-Chv IV uye PAC IV VACNS system (PAC). methylprednisolone. Multiple landmark cohort studies inoratidza kuti glucocorticosteroids inyowani yakazvimirira yekiriniki yakawedzera, inofambira mberi vasoconstriction, sitiroko yekusingaperi, uye kufa muRCVS (nekuti steroids potentiate vascular sensitivity kune catecholamines). Shandisa \(\text{RCVS}_2\) Score uye CSF ongororo (yakajairika muRCVS; pleocytosis/high protein muPACNS) kudzivirira empiric steroids.
  10. Dzora Kubata Pakarepo neIV Magnesium Sulfate (kana Postpartum/Eclamptic) kana IV Levetiracetam / Lorazepam. Kubata kunoitika mu **60 kusvika 75 muzana yevarwere vePRES ** uye kusvika **15 muzana yevarwere veRCVS **. Tonga IV Lorazepam (\(2\text{ kusvika }4\text{mg}\)) uye takura IV Levetiracetam (\(1,500\text{ kusvika }3,000\text{mg}\)); kana murwere ari nepamuviri kana mukati memavhiki e6 mushure mekusununguka (apo preeclampsia, PRES, uye RCVS zvinowanzosangana), pakarepo shandisa *Intravenous Magnesium Sulfate (\(4\text{kusvika }6\text{g}\) IV yekutakura dose pamusoro pemaminitsi e20, inoteverwa ne $1\text{kusvika}2\text{g/hou*) panguva imwe chete inodzivisa, kubatwa nemhepo, panguva imwe chete inogadzirisa posterior blood-brain barrier (PRES), uye inoshanda seine simba cerebral vasodilator (RCVS).

Sei Kupa Sumatriptan kana Dihydroergotamine (DHE) ye 'Yakaoma Migraine' Inogona Kukonzera Kuuraya Kufa muRCVS

Varwere vane RCVS vanowanzouya kune dhipatimendi rekukurumidzira nemusoro wavo wekutanga kana wechipiri wekutinhira uye musoro wakakwana wekutanga usingatauriki CT (uye kunyange yakajairwa Zuva-1 CTA, nokuti centripetal vasoconstriction inotanga mudiki distal pial arteries isingaoneki paCTA panguva yekutanga 3 kusvika 5 mazuva asati afamba neCirc4 kusvika kune Zuva re1). Kana chiremba akasaziva kutemwa kwemusoro semigraine yakanyanya uye achipa Subcutaneous Sumatriptan kana Intravenous Dihydroergotamine (DHE), iyo ine simba \(5\text{-HT}_{1\text{B}/1\text{D}}\)cerebral vasoconstrictors inodzikamisa artecipitari, prebral arteries nechekare ** convexity subarachnoid hemorrhage, intracerebral hemorrhage, kana bilateral ischemic sitiroko **. Usambopa matriptan kana ergots kune kutinhira kwemusoro.

Muti wesarudzo: acute emergency department triage yeThunderclap Headache, RCVS, uye PRES

flowchart TD
    A["Murwere Anouya neAcute Neurovascular Crisis: Muenzaniso 1: Kamwe Kamwe Kuputika Kutinhira Musoro (<60s kusvika 10/10 peak, kunyanya inowanzoitika mushure me orgasm, kuedza, kana Valsalva) OR Muenzaniso 2: Kubatwa, Kurasika Kwekuona / Cortical Blindness, Kuvhiringidzika, uye Musoro weHypertoum, Musoro weHypertoum, uye Musoro weHypertoum Tacrolimus/Chemo Kushandisa"] --> B["Pakarepo Kudzikamiswa Kwemubhedha: Tarisa maABC, Yedza BP muMawoko Maviri, Tarisa Fingerstick Glucose, Pamuviri/Pashure peKusununguka Mamiriro, uye Ita Mishonga Yakazara & Kuongorora Zvinhu."]
    B --> C["STAT Non-Contrast Head CT + CT Angiography (CTA) yeMusoro & Mutsipa + CT Venogram (CTV) + Urgent Brain MRI ine DWI/ADC, FLAIR, SWI, uye MRA"]
    C --> D{"Ongorora Neuroimaging & Clinical Syndrome"}
    D -->|Basal Cistern / Sylvian Fissure SAH + Saccular Berry Aneurysm on CTA| E["ANEURYSMAL SUBARACHNOID HEMORRHAGE (aSAH): Emergent Neurosurgical Coiling/Clipping + Oral Nimodipine 60 mg q4h + Target SBP <140-160 mmHg"]
    D -->|Recurrent Thunderclap Headaches + RCVS2 Score >= 5 + Focal Convexity Sulcal SAH, Lobular ICH, or Multifocal 'String-of-Beads' Vasoconstriction on CTA/MRA (Note: Initial CTA Can Be Normal in First 5 Days)| F["REVERSIBLE CEREBRAL VASOCONSTRICTION SYNDROME (RCVS)"]
    D -->|Symmetric Parieto-Occipital (or Holohemispheric Watershed) Subcortical Hyperintensity on T2/FLAIR with ELEVATED ADC (Vasogenic Edema, Not Cytotoxic Infarct)| G["POSTERIOR REVERSIBLE ENCEPHALOPATHY SYNDROME (PRES)"]
    D -->|Both Multifocal String-of-Beads Vasospasm AND Parieto-Occipital Vasogenic Edema on MRI/MRA (10% to 35% Overlap, Common in Postpartum Eclampsia)| H["COMBINED RCVS + PRES OVERLAP SYNDROME"]
    F --> I["RCVS PROTOCOL: 1. MISA zvose Triptans, SSRIs, SNRIs, Decongestants, Cannabis, Cocaine; 2. Dzivisa Valsalva / Exertion (Ipa Stool Softeners); 3. Tanga Nimodipine (30-60 mg PO q4h) kana Verapamil; 4. DVISA Aggressive BP Drops (Dzivirira Mvura Yakabva Mvura); 5. Usambopa Glucocorticoids"]
    G --> J["PRES PROTOCOL: 1. Smoothly Lower MAP ne20% kusvika 25% muKutanga 1-2 Maawa uchishandisa IV Nicardipine (5-15 mg / h) kana Labetalol; 2. Stop/Switch Tacrolimus, Cyclosporine, kana Bevacizumab; 3. Kurapa Kugwinha neIV Levetiracetam (kana IV Magnesium Sulfate 4-6 g Mutoro kana Postpartum/Eclamptic)"]
    H --> K["OVERLAP PROTOCOL: Titrate IV Nicardipine kana IV Magnesium Sulfate + Oral Nimodipine Kuti Uderedze Zvinetso Kuwedzera Hypertension (Target SBP 140-160 mmHg) PASINA Kukonzera Hypotension (<120 mmHg) + Rega Zvose Zvinodhaka Zvinodhaka"]

Pathophysiology: inopesana necerebrovascular mechanisms (Sympathetic Vasospasm muRCVS vs. Autoregulatory Breakthrough muPRES) uye nei vachipindirana

THE CEREBROVASCULAR SPECTRUM: RCVS VS. PRES & THEIR 10%-35% OVERLAP
================================================================================
  [RCVS: SYMPATHETIC OVERDRIVE]              [PRES: AUTOREGULATORY BREAKTHROUGH]
  Triggers: SSRIs, Triptans, Cannabis,       Triggers: Acute Malignant HTN,
  Pseudoephedrine, Cocaine, Postpartum,      Tacrolimus/Cyclosporine, Bevacizumab,
  Orgasm / Valsalva / Coughing.              Renal Failure, Eclampsia.
               |                                          |
               v                                          v
  Sudden Surge in Cerebral Sympathetic       1. Acute MAP Surge (> 150-160 mmHg)
  Adrenergic Tone on Pial & Circle of           exceeds Upper Autoregulatory Limit
  Willis Arteries.                           2. Direct Endothelial Tight-Junction
               |                                Toxicity (Calcineurin / VEGF block).
               v                                          |
  [CENTRIPETAL VASOCONSTRICTION]                          v
  Day 1-5: Distal small pial arteries        [POSTERIOR HYPERPERFUSION LEAK]
           spasm (triggers Thunderclap       Vertebrobasilar (Parieto-Occipital)
           Headaches + Convexity SAH;        vessels lack protective sympathetic
           CTA may still look NORMAL).       innervation --> Hydrostatic fluid
  Day 7-14: Spasm marches proximally         floods across Blood-Brain Barrier.
            into MCA/ACA/PCA trunks                       |
            ("String-of-Beads" on CTA)                    v
            --> Risk of Watershed            [PARIETO-OCCIPITAL VASOGENIC EDEMA]
                Ischemic Stroke if BP        - FLAIR bright + ADC HIGH (reversible)
                is dropped too fast.         - Generalized Seizures (60%-75%)
                                             - Cortical Blindness & Encephalopathy.
================================================================================
             \                                              /
              \---> [10% TO 35% BIDIRECTIONAL OVERLAP] <---/
                    - Endothelial breakdown in PRES releases Endothelin-1
                      and Thromboxane A2 --> triggers secondary RCVS spasm.
                    - Severe RCVS pain/sympathetic surge spikes BP > 200 mmHg
                      --> triggers posterior autoregulatory breakthrough (PRES).
================================================================================

1. Sei Yekutanga CT Angiogram (CTA) Yakajairika Kusvika ku30 Percent yeRCVS Varwere (The Centripetal March of Vasospasm)

Dambudziko rakakosha rekiriniki mukukurumidzira neurology iri kutonga kunze kweRCVS apo murwere anouya paZuva 1 kana Zuva 2 rekudzokororwa kwemusoro wekutinhira uye ane ** yakajairika CT angiogram (CTA) kana MR angiogram (MRA) : - Distal-to-Proximal (Centripetal) Progression: MuRCVS, sympathetic dysregulation inotanga mu microscopic distal pial and leptomeningeal arterioles pamusoro pecerebral convexities (midziyo \(< 0.5\text{ mm}\) mudhayamita, iri pazasi pespatial resolution yeCTA neMRA). - Nei Convexity SAH Ichiitika Kare (Mazuva 1 kusvika 5) Nepo Stroke Ichiitika Nguva Yapera (Mazuva 7 kusvika 14): Kana diki diki distal pial arterioles rikangoerekana ragwamba robva razara pamusoro pehuropi mukati memazuva mashoma ekutanga, anogona kuputika kuita manyemwe, urtical cortical diki. subarachnoid hemorrhage (cSAH) (inoonekwa paBrain MRI FLAIR/SWI kusvika ku30 muzana yevarwere veRCVS) nepo Circle yakakura yeWillis arteries ichiri kutaridzika zvachose paCTA. - ** Peak Proximal "String-of-Beads" Kuderera paMazuva 10 kusvika 16:** Muvhiki yechipiri, vasoconstriction inofamba ** nechepakati (mukati) ** ichipinda muhombe M1/M2 yepakati cerebral, A1/A2 anterior cerebral, uye P1/P2 posterior arteries. Nokudaro, ** inooneka "tambo-ye-beads" inoshandura constriction uye ectasia paCTA / MRA kazhinji haigoni kusvika kusvika 10 kusvika ku16 mazuva mushure mekutanga kutinhira kwemusoro **, kutsanangura kuti sei ischemic strokes muRCVS inowanzoitika mu ** Vhiki 2 ** (kazhinji mushure mokunge misoro yave kutovandudza). Kana yekutanga CTA/MRA yakajairika mumurwere ane classic recurrent thunderclap headaches, ** dzokorora CTA/MRA kana Transcranial Doppler (TCD) mumazuva 5 kusvika 7 **.

2. Sei PRES Ichirova Occipital uye Parietal Lobes Kutanga (Iyo Tsitsi Innervation Gradient)

Sei acute hypertension ichikonzera kuzvimba mu kumashure kweuropi (parieto-occipital lobes) pane kumberi kweuropi? - Dense Anterior vs. Sparse Posterior Sympathetic Tone: The anterior cerebral circulation (inotorwa kubva mukati metsinga yemukati ye carotid inopa kumberi uye kwechinguvana lobes) inogamuchira dense perivascular sympathetic adrenergic innervation kubva *superior cervical ganglion. Kana systemic blood pressure ichikwira zvakanyanya, idzo tsinga dzinonzwira tsitsi dzinosunga anterior arterioles kudzivirira mibhha yepamberi capillary kubva kune yakakwa hydrostatic pressure. - ** The Vertebrobasilar Vulnerability: ** Kusiyana neizvi, ** posterior vertebrobasilar circulation ** (inopa occipital lobes, posterior parietal lobes, uye cerebellum) ine ** sparse sympathetic adrenergic fibers **. Kana Mean Arterial Pressure ikakwira pamusoro pesirin'i ye autoregulatory (\(150\text{kusvika}160\text{mmHg}\)), kana kunyangwe pakakwirira BP (\(140/90\text{ mmHg}\)) apo tacrolimus, cyclosporine, kana eclampsia yakatokuvara artorlyerial endothelial endothelial ("autoregulatory breakthrough"), kumanikidza maprotein-rich plasma mhiri kweropa-brain barriers kupinda parieto-occipital white matter (**vasogenic edema **).

Kuenzanisa kweparutivi: RCVS vs. PRES vs. Aneurysmal SAH vs. Primary CNS Vasculitis (PACNS)

Clinical & Radiologic Feature Reversible Cerebral Vasoconstriction Syndrome (RCVS) Posterior Reversible Encephalopathy Syndrome (PRES) Aneurysmal Subarachnoid Hemorrhage (aSAH) Primary Angiitis yeCNS (PACNS / CNS Vasculitis)
Musoro Kutanga & Patani ZVAKAITIKA Kutinhira Kwemusoro (\(2\text{ kusvika }10+\) kuputika 10/10 kurwiswa ne \(1\text{kusvika }14\text{ days}\),ichikwira mu\(< 60\text{ sec}\)), zvichikonzerwa nekugara,kusimba,Valsalva, kana manzwiro. Subacute, dull, throbbing holocephalic kana occipital headache (kashoma kutinhira kunze kwekunge kwakazara neRCVS). Njodzi imwechete Kutinhira Kwemusoro + meningismus (mitsipa yakaoma), photophobia, syncope, kana pakoma. **Isinganzwisisike, isingaperi, isina kusimba inofambira mberi yemusoro ** inokura kwemavhiki kusvika kumwedzi (inenge isingaite kutinhira).
Dominant Neurological Presentation Kurwadza kwemusoro unodzokorora kutinhira; focal deficits kana zviratidzo zvinoonekwa zvinoitika kana zvakaoma ne ** cSAH, lobar ICH, kana Week-2 watershed stroke **. Encephalopathy/Confusion (\(50\%\text{ to }80\%\)), Generalized Seizures (\(60\%\text{ to }75\%\)), uye **Kuvhiringika Kunoonekwa (\(40\%\text{ kusvika }60\%\): cortical blindness, Anton syndrome, hemianopia)*. Cranial nerve III palsy (pupil inoputika), pfungwa yakaora mwoyo, inononoka cerebral ischemia (Mazuva 4 kusvika ku14). Stepwise cognitive kudzikira, multifocal subacute sitiroko, hunhu hunochinja nemwedzi.
Classic Precipitating Triggers **SSRIs, SNRIs, Triptans, Nasal Decongestants, Cannabis, Cocaine, Amphetamines **, **Postpartum state **, catecholamine tumors (pheochromocytoma). Acute Severe Hypertension, Pre-eclampsia / Eclampsia, Tacrolimus, Cyclosporine, Bevacizumab / Cisplatin, Renal Failure / Lupus (SLE). Kuputika kwesaccular berry aneurysm paDenderedzwa reWillis bifurcations (AComm, PCm, MCA); kusvuta, ADPKD. Autoimmune granulomatous kana lymphocytic kuzvimba kwemidziyo midiki / yepakati CNS; hapana vasoactive drug trigger.
** Brain MRI (DWI / ADC / FLAIR / SWI) Zvakawanikwa ** Kazhinji zvakajairika pakutanga; Convexity Sulcal SAH (cSAH) paFLAIR/SWI (\(30\%\)); watershed infarcts kana lobar ICH mumatambudziko akaoma; \(10\%\text{kusvika }35\%\) ine concomitant posterior PRES edema. ** Symmetric Parieto-Occipital (kana Superior Frontal Sulcus / Cerebellar) T2 / FLAIR Hyperintensity ne HIGH ADC ** (**Vasogenic Edema **, vs. ADC yakaderera mu cytotoxic stroke). Ropa rinozadza ** basal matangi, Sylvian fissures, uye ventricles ** pane isina-kusiyanisa CT uye FLAIR/SWI. Multiple bilateral subcortical uye yakadzika grey / chena nyaya ** isingaperi uye subacute infarcts ** yemazera akasiyana + leptomeningeal kuwedzera.
** Vascular Imaging (CTA / MRA / DSA) uye CSF ** Multifocal segmental "String-of-Beads" vasoconstriction uye dilatation (peaks Day 10-16; inogadzirisa mu \(\le 12\text{ weeks}\)). CSF yakajairika kana kuti iri pedyo-yakajairika (\(\text{WBC} <10\), protein \(< 60\text{mg/dL}\)). Normal cerebral arteries mu \(65\%\text{ kusvika }85\%\); concomitant RCVS-like vasoconstriction mu \(15\%\text{kusvika }35\%\). Yakajairika kana zvishoma yakakwira CSF protein. ** Saccular berry aneurysm ** paCTA / DSA; xanthochromia uye \(> 10,000\zvinyorwa{RBCs/\mu L}\) muTube 4 yeLP. Irregular distal mudziyo kutetepa iyo isingaite ** kwete ** inodzokera kumashure mumavhiki gumi nemaviri; Kuzvimba CSF (\(> 90\%\) vane lymphocytic pleocytosis uye mapuroteni akakwirira).
Emergency Blood Pressure & Steroid Rule KUDZIVISA Hypotension (chengetedza yakajairika perfusion kudzivirira kudonha kwemvura); ipa Nimodipine kana Verapamil. STEROIDS ARI KUPIRWA ZVAKASIYANA (Mugumisiro Wakaipa). KUKURUMIDZA Kudzikisa MAP ne20% kusvika 25% muKutanga 1 kusvika Maawa maviri uchishandisa IV Nicardipine, Clevidipine, kana Labetalol. Steroids HAZVIDHIRE vasogenic edema. Pazasi SBP \(< 140\text{ kusvika }160\text{ mmHg}\) aneurysm isati yachengetedzwa; ipa nemuromo Nimodipine \(60\text{mg}\) q4h. Inoda High-Dose IV Methylprednisolone (\(1,000\text{mg/day}\)) + Cyclophosphamide kana Rituximab kana RCVS uye utachiona hwabviswa.

Iyo RCVS2 Score: Bedside Diagnostic Tool yekusiyanisa RCVS kubva kuCNS Vasculitis (PACNS) uye Mamwe maArteriopathies.

Yakagadzirwa uye yakasimbiswa naRocha, Singhal, uye vaanoshanda navo (Neurology, 2019), iyo \(\text{RCVS}_2\) Score inobvumira vanachiremba vekukurumidzira uye neurologists kuti vasiyanise RCVS kubva kuPrimary Angiitis yeCNS (PACNS) padivi pemubhedha pasina kumirira mavhiki gumi nemaviri ekudzokorora angiography:

Clinical kana Radiologic Parameter Finding Points
1. Recurrent or I single Thunderclap Headache (TCH) Present
Absent		 \(+5\)
\(0\)
2. Intracranial Carotid Artery Involvement (Terminal ICA) Yakakanganiswa (yakaderedzwa paCTA/MRA)
Haina kukanganiswa (yakachengetwa)		 \(-2\)
\(0\)
3. Vasoconstrictive Trigger Identified (Vasoactive drug, SSRI, triptan, cannabis, decongestant, postpartum, eclampsia) Present
Absent		 \(+3\)
\(0\)
4. Patient Biological Bonde Mukadzi
Murume		 \(+1\)
\(0\)
**5. Convexity Subarachnoid Hemorrhage (cSAH) paCT kana MRI ** Present
Absent		 \(+1\)
\(0\)
  • Dudziro yeZvose \(\zvinyorwa{RCVS}_2\)Chibodzwa (Range \(-2\text{ kusvika }+10\)):
  • Chibodzwa \(\ge 5\): Inosimbisa RCVS ne\(90\%\) kunzwa uye \(99\%\) chaiyo (usa **** kuita invasive brain biopsy kana kuisa empiric glucocorticoids).
  • Chibodzwa \(\le 2\): Isingabatanidzi RCVS ine \(85\%\) senitivity uye \(100\%\) specificity (ongorora PACNS, intracranial atherosclerosis, kana infectious vasculitis kuburikidza lumbar puncture uye mudziyo-wall MRI).
  • Zvibodzwa \(3\mavara{kusvika ku}4\): Zvepakati; ita yakakwira-resolution kusiyanisa mudziyo-wall MRI (RCVS inoratidza **diki kana zero concentric mudziyo-wall enhancement **, nepo PACNS inoratidza zvakanyanya concentric inflammatory wall enhancement) uye lumbar puncture.

Nhanho-ne-Nhanho Hospital Management Protocols yeRCVS uye PRES

Protocol A: Hospital Management yeReversible Cerebral Vasoconstriction Syndrome (RCVS)

  1. Immediate Trigger Elimination & Bed Zororo:
  2. Misa ese serotonergic, adrenergic, uye vasoactive substance nekukasika (triptans, ergots, SSRIs, SNRIs, nasal decongestants, cannabis, nicotine patches, amphetamines, cocaine).
  3. Isa murwere pa ** kuzorora kwemuviri kwakasimba muimba yakanyarara **; rambidza kufamba kweValsalva, kusimudza zvinorema, kuita zvepabonde, uye kushungurudza pazvigaro (nyora zvakarongwa ** senna / docusate / polyethylene glycol stool softeners ** uye antitussives kana uchikosora).
  4. Calcium Channel Blocker Vasospasm Therapy & Ropa Preservation Preservation:
  5. Shandisa Oral Nimodipine (\(30\text{ kusvika }60\text{mg}\)PO maawa mana oga oga) kana Sustained-Release Oral Verapamil (\(120\text{ kusvika }240\text{mg/day}\)) (kana IV Nicardipine / Nimodipine kana usingakwanise kunwa mushonga wekunwa).
  6. Critical Hemodynamic Rule: Tarisa BP mushure meyega yega dosi yenimodipine kana verapamil. Usambobvumira systolic blood pressure kudonha pasi pe \(110\text{ to }120\text{ mmHg}\) (kana MAP kudonhedza \(> 20\%\) mumurwere ane proximal M1/A1/P1 vasoconstriction yakanyanya), nekuti hypoperfusion patsinga yakamanikana inokonzera bilateral watershed infarction. Bata acute hypertensive spikes chete (\(> 180/110\text{ mmHg}\)) zvinyoro.
  7. Yakachengeteka Analgesia yeMusoro Wakanyanya Kurwadza (Zero Triptans, Zero Steroids):
  8. Kurapa kurwadziwa kwakanyanya ne **IV Acetaminophen (Paracetamol) **, IV Magnesium Sulfate ($ 1\text{ kusvika }2\text{g}$), uye kwenguva pfupi IV/Oral Opioids (Hydromorphone kana Morphine) kana zvichidiwa. Usambopa triptans, ergotamines, indomethacin (iyo inoderedza kuyerera kweropa reuropi), kana corticosteroids.
  9. Refractory Severe RCVS ine Progressive Ischemic Deficits:
  10. Monitor zuva nezuva kana mamwe-mamwe-zuva **Transcranial Doppler (TCD) inoreva kuyerera kwevelocities ** mukati mecerebral arteries. Kana murwere achiwedzera kufambira mberi kwehutano hwemagetsi (hemiparesis, aphasia, cortical blindness) kubva kune yakanyanya proximal vasospasm pasinei nemuromo nimodipine uye normotension, kuendeswa kuNeuro-ICU ye **induced normotensive / milly hyperdynamic euvolemia ** uye ** endovascular intra-arterial vasodilator arterine, Miral-arterial vasodilator infusion, Miral-cardipine kana Mirapamil kungwarira balloon angioplasty.

Protocol B: Hospital Management yePosterior Reversible Encephalopathy Syndrome (PRES)

  1. Pakarepo Inodzorwa Kudzikiswa Kweropa (Iyo 20% kusvika 25% Rule):
  2. Mu70 kusvika ku80 muzana yevarwere vePRES vanouya vane mwero-kusvika-yakanyanya acute hypertension, pakarepo vanotanga kuenderera, titratable intravenous antihypertensive infusion:
    • Mutsara Wekutanga: Intravenous Nicardipine inotangira ku \(5\text{mg/awa}\) IV, yakaderedzwa ne\(2.5\text{mg/awa}\) pamaminetsi mashanu kusvika ku15 ega ega (yakanyanya \(15\text{mg/hour}\)).
    • Alternative First-Line: Intravenous Clevidipine (\(1\text{ kusvika }2\text{mg/awa}\) IV, yakapetwa kaviri masekonzi makumi mapfumbamwe ega ega kuti kunange) kana Intravenous Labetalol (\(10\text{ kusvika }20\text{mg}\) IV bolus pamusoro pemaminetsi maviri,mg2/maminiti{}manyoro e\(2, yakadzokororwa pa\)2/min}zvinyorwa).
    • Dzivisa Sodium Nitroprusside neNitroglycerin: Zvose zvinokonzeresa kunanga cerebral venodilation uye kusimudza intracranial pressure (ICP), iyo inogona kuwedzera cerebral edema muPRES yakaoma.
  3. Target: Deredzai Mean Arterial Pressure (MAP) ne20% kusvika 25% mukati meawa 1 kusvika ku2 ekutanga, zvichivavarira systolic blood pressure ye \(140\text{ kusvika }160\text{ mmHg}\) uye diastolic blood pressure ye **\(85\text{ kusvika }mmHg\text{100}\) Usadonhedze MAP neanopfuura makumi maviri neshanu muzana mumaawa maviri ekutanga, kunyanya kana concomitant RCVS vasoconstriction iripo.
  4. ** Rega kana Dose-Drusa Endothelial Cytotoxins (Tacrolimus / Cyclosporine / Bevacizumab): **
  5. Cherechedza kuti ** 20 kusvika 30 muzana yevarwere vePRES vane nguva yakajairika kana kuti yakawedzera zvishoma zvishoma kudzvinyirira kweropa ** pahurukuro nokuti PRES yavo inotungamirirwa nekukuvadza kwakananga endothelial tight-junction kubva ku ** tacrolimus, cyclosporine, chemotherapy, kana sepsis ** pane sheer hydrostatic pressure.
  6. Tarisa STAT yeropa-rase Tacrolimus kana Cyclosporine trough level (kunyangwe tacrolimus-induced PRES inowanzoitika kunyangwe mazinga eropa ari mukati me "kurapa"). Rongedza nekukurumidza neiyo transplant kana oncology timu kubata iyo calcineurin inhibitor kana anti-VEGF mumiriri uye shanduko kune imwe immunosuppressant (yakadai se mycophenolate mofetil kana yakangwarira calcineurin switch).
  7. Aggressive Seizure Kumiswa uye Kudzivirirwa Kwendege:
  8. Nemhaka yokuti chimiro chisingaiti epilepticus (kunyanya occipital lobe focal status epilepticus inokonzera kuvhiringidzika kwenguva refu kana kuona maonero / upofu) inowanikwa muPRES, tora ** inoenderera EEG monitoring ** mune chero murwere anoramba encephalopathic mushure mekubatwa.
  9. Rodha Intravenous Levetiracetam (\(40\text{ kusvika }60\text{mg/kg}\), inosvika \(3,000\text{ kusvika }4,500\text{mg}\) IV mumaminetsi gumi nemashanu) mushure mekupedza kugwinha kuri kuitika ne**IV Lorazepam (\(0.1\text, mg/\)4$)
  10. Kana Aine Nhumbu kana Mushure meKusununguka (Eclamptic PRES): Intravenous Magnesium Sulfate (\(4\text{ kusvika }6\text{g}\) IV yakaremerwa nemaminitsi makumi maviri, zvino \(1\text{kusvika }2\text{g/hour}\)) yakakwirira zvikuru kupfuura phenytoin kana kuti diazepam iri padivi negoridhe rinoshandiswa antepartum.

Iyo Diffusion-Weighted MRI (DWI uye ADC Mepu) Inoparadzanisa Reversible PRES kubva Permanent Stroke

Zvose acute posterior cerebral artery (PCA) ischemic stroke uye PRES inokonzera kupenya T2 / FLAIR white-matter signal mu occipital lobes uye cortical blindness. Iyo **Inoratidzika Diffusion Coefficient (ADC) mepu ** paBrain MRI inobva yavaudza kuti vaparadzane: - Acute Ischemic Stroke (Cytotoxic Edema): Kukundikana kwesimba kunoita kuti mvura ifambe mukati mumaseru ari kufa, zvichirambidza kufamba kweBrownian. DWI INOPENYA uye mepu yeADC inoti RIMA (yakaderera ADC); tissue is irreversibly infarcted. - PRES (Vasogenic Edema): Hydrostatic fluid inopinda mukati me extracellular interstitial space pakati pemasero europi akasimba, kuwedzera kufamba kwemvura. T2/FLAIR INOPENYA uye mepu yeADC INOPENYA (yakasimudzwa ADC); kana BP yadzikiswa uye muchetura unogumbura ukamiswa, mvura yacho inodzokororwa uye kuona inodzoka zvachose mukati memazuva matatu kusvika gumi nemana. (Kana matinji madiki erima ADC akaonekwa mukati mePRES lesion inopenya, cytotoxic infarction yatanga uye prognosis yakachengetedzwa).

Nhamba dzenharaunda dzechimbichimbi uye nhungamiro yekiriniki

  • United States neCanada: Dhonza 911 nekukasika kuitira chero kutinhira kwemusoro, kubatwa kutsva, kana kurasikirwa nekuona kamwe kamwe. Madhipatimendi eEmergency uye Comprehensive Stroke Centers anotevera American Heart Association / American Stroke Association (AHA/ASA) uye Neurocritical Care Society (NCS) mirayiridzo yeCTA/MRI triage, \(\text{RCVS}_2\) scoring, uye nicardipine/nimodipine titration.
  • United Kingdom: Dial 999. Tevera ** National Institute for Health and Care Excellence (NICE) ** uye ** Kubatana kweBritish Neurologists (ABN) ** kurwadza kwemusoro uye sitiroko nzira, kuongorora pakarepo isiri-kusiyanisa CT/CTA (pamwe neMRI neFLAIR/DWI/SWI) uye kudzivirira kwakasimba kwe triptans uye steroid mune zvinofungidzirwa RCVS.
  • European Union: Dial 112. Vanachiremba vanotevera ** European Stroke Organization (ESO) ** uye ** European Academy of Neurology (EAN) ** mazano pamusoro peRCVS uye PRES management.
  • Australia neNew Zealand: Dial 000 muAustralia kana 111 muNew Zealand uye tevera Stroke Foundation Australia uye SOMANZ (Society of Obstetric Medicine yeAustralia neNew Zealand) zvibvumirano zve postpartum RCVS uye eclamptic PRES.

Mibvunzo inowanzo bvunzwa

Vanachiremba vangataurira sei Thunderclap Headache inokonzerwa neRCVS kunze kweRuptured Brain Aneurysm (Subarachnoid Hemorrhage)?

Murwere wese ane yekutanga kutinhira kwemusoro anofanira kubva angopinda mumusoro usingatauriki CT uye CT angiogram (CTA) kuti abvise ruptured saccular berry aneurysm. Zvisinei, zviratidzo zviviri zvepamubhedha zvinonongedza zvakasimba kuReversible Cerebral Vasoconstriction Syndrome (RCVS): (1) Kudzokorora, asi aneurysm inoputika inowanzokonzera imwe inoparadza musoro musoro nekuoma kwemutsipa kana kurasikirwa kwekuziva, RCVS inokonzera 2 kusvika ku10 yakasiyana, inoputika pamusoro pemabhanan'ana e2 vhiki imwe neimwe. orgasm, kusveta pachimbuzi, kukosora, kushanda nesimba, kana kutora mvura inopisa/inotonhora; uye (2) Nhoroondo yemishonga, inopfuura hafu yevarwere veRCVS munguva pfupi yapfuura vakatora serotonergic kana vasoactive zvinhu zvakadai seSSRI antidepressants, migraine triptans, over-the-counter nasal decongestants, kana cannabis, kana kubereka mukati memavhiki matanhatu apfuura.

Sei zvine ngozi kukurumidza kudonha ropa muRCVS, apo kukurumidza kuderera kweropa kunoponesa upenyu muPRES?

MuPRES (Posterior Reversible Encephalopathy Syndrome), tsinga dzehuropi dzakatambanudzwa zvakanyanya kubva paBP ichipaza nhovo yehuropi, ichizadza kuseri kweuropi nemvura; kudzikisa Mean Arterial Pressure nezvikamu makumi maviri kusvika makumi maviri neshanu kubva muzana kwemaawa 1 kusvika ku2 kunomisa kubuda uye kunorapa kuzvimba. MuRCVS, dambudziko rakapesana chairo riri kuitika: tsinga dzehuropi dzakasungirirwa pasi muzvikamu zvakaomesesa ("tambo-ye-bead"). Huropi tsinga dziri zasi kwetsinga dziya dzakatetepa dziri kuvimba neBP yakakwira yemurwere kusunda ropa rakakwana nemubhodhoro. Kana chiremba anodonhedza zvine hukasha BP kusvika yakaderera muRCVS, kuyerera kweropa kupfuura iyo spasm inomira zvachose, zvichikonzera kugadzika kwemvura ischemic sitiroko.

Sei varwere vane fungidziro yeRCVS vasingambofanirwe kupihwa Prednisone, Methylprednisolone, kana Dexamethasone?

Nokuti RCVS inogadzira "tambo-ye-beads" kuderedza tsinga dzeuropi pa CT kana MR angiography iyo inotarisa inotaridzika yakafanana nePrimary CNS Vasculitis (kuzvimba kwe autoimmune mutsinga dzeropa), vanachiremba vaiwanzopa steroid yakawanda ye intravenous "zvichida." Landmark kiriniki zvidzidzo na Singhal uye vatinoshanda navo zvakaratidza kuti steroid haibatsire RCVS; kutaura zvazviri, kupa glucocorticoids muRCVS kunowedzera katatu njodzi yekuparara kwekiriniki, kunowedzera cerebral vasoconstriction (nekuwedzera ropa mutsinga senitivity kune adrenaline uye noradrenaline), uye inokonzera chirwere chisingaperi kana rufu. Kushandisa padivi pemubhedha RCVS2 mamakisi kunobvumira vanachiremba kusimbisa RCVS uye kunyima steroid zvakachengeteka.

Nei PRES ichikonzera upofu hwakamwe kamwe kunyange zvazvo maziso omurwere netsinga dzemaziso dzine utano hwakakwana?

Mitsipa yeropa kuseri kwehuropi (vertebrobasilar system, iyo inopa occipital lobes kunogara iyo yekutanga kuona cortex) ine mashoma anodzivirira anonzwira tsitsi tsinga pane tsinga dziri kumberi kwehuropi. Kana BP yakwira zvine njodzi zvakanyanya kana kuti mushonga wakaita setacrolimus uchikuvadza ropa-brain barriers, mvura inoyerera ichipinda mu occipital lobes kuseri kwemusoro. Nekuti occipital cortex ndiyo "bhaisikopo skrini" inogadzira chiono chemaziso ese, kuzvimba ipapo kunokonzera acute cortical blindness, vadzidzi vemurwere vachiri kuita sezvakangoita pachiedza uye retinas yavo inotaridzika seyakajairwa, asi uropi hwavo hahugone kugadzirisa chifananidzo kusvika kuderera kweropa kwadzikiswa uye kuzvimba kweoccipital kwagadzirisa.

Nzvimbo uye nhungamiro yepamutemo

  • ** American Heart Association / American Stroke Association (AHA / ASA): ** * Scientific Statement uye Nhungamiro pamusoro peKutungamirirwa kweReversible Cerebral Vasoconstriction Syndrome (RCVS), Cervical Artery Dissection, uye Subarachnoid Hemorrhage *.
  • Neurology / Harvard MGH RCVS Registry (Singhal AB, Topcuoglu MA, Rocha EA et al.): *Reversible Cerebral Vasoconstriction Syndrome: Characterization of 139 Cases, Glucocorticoid-Induced Worsening, uye Validation yeRCVS2 Diagnostic.
  • Lancet Neurology / New England Journal of Medicine (Fugate JE, Rabinstein AA; Ducros A): Posterior Reversible Encephalopathy Syndrome (PRES) uye Reversible Cerebral Vasoconstriction Syndrome: Pathophysiology, Neuroimaging (DWI/ADC), uye Acute Hemodynamic Management.
  • European Stroke Organization (ESO) uye European Academy of Neurology (EAN): Clinical Consensus pamusoro peKuongorora uye Acute Management yeThunderclap Headache, RCVS, uye Hypertensive Encephalopathy / PRES.
  • American College of Obstetricians and Gynecologists (ACOG): Dzidzira Bulletin paGestational Hypertension, Preeclampsia, Postpartum Eclampsia, PRES, uye RCVS Overlap.

Tora kosi yerubatsiro rwekutanga yakasimbiswa uye bvunza nyanzvi

Gwaro iri rinopa kuzivikanwa kwechimbichimbi uye chipatara triage dzidzo uye haritsivi nyanzvi yeurological, neurocritical, obstetric, kana emergency emergency kurapwa. Kuti udzidze hunyanzvi hunoshanda mukuziva zviratidzo zvesitiroko, kubata pfari, uye kuita tsigiro yehupenyu, tora kosi yerubatsiro rwekutanga yakasimbiswa kuburikidza neRed Cross, St John Ambulance, kana mupi wepano.

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