Read by QxMD icon Read


Chao Fu, Zhongxin Xu, Zhenzhen Hu, Shuai Yao, Fengmin Liu, Baiqi Feng, Conghai Zhao, Weidong Yu
Cerebral hyperperfusion syndrome (CHS) is a well-documented complication after carotid endarterectomy or stenting. In contrast, CHS following vertebral revascularization is extremely rare. Here we present a case of a 77-year-old man with high-grade vertebral stenosis who subsequently underwent balloon angioplasty, complicated by hemorrhagic CHS manifesting as cortical blindness, although strict postoperative blood pressure control was administered. To our knowledge, cortical blindness as a presentation of hemorrhagic CHS has not previously been reported...
March 21, 2018: Journal of Neurointerventional Surgery
Kathryn F Kirchoff-Torres, Ekaterina Bakradze
PURPOSE OF REVIEW: Cerebral hyperperfusion syndrome (CHS) is a rare but significant complication after carotid revascularization and is increasingly recognized after acute stroke treatments. In this review, we discuss the epidemiology and pathophysiology of CHS, clinical presentation including ipsilateral headache, seizures, and focal neurological deficits, and radiographic presentation. We propose preventive therapies with emphasis on acute stroke post-thrombectomy hyperperfusion. RECENT FINDINGS: CHS was first described after carotid revascularization but is now also reported in patients with acute ischemic stroke...
March 19, 2018: Current Pain and Headache Reports
Rumiko Takayama, Katsumi Imai, Hiroko Ikeda, Koichi Baba, Naotaka Usui, Yukitoshi Takahashi, Yushi Inoue
We describe two cases of refractory epilepsy with cerebral hemiatrophy and contralateral electroencephalographic (EEG) abnormalities, in which hemispherotomy of the atrophic hemisphere effectively controlled seizures. Case 1 was a 5-year-1-month-old girl with refractory bilateral asymmetrical tonic posturing seizures predominantly in the right arm. Magnetic resonance imaging showed left porencephaly corresponding to a left middle cerebral artery infarction. Case 2 was a 3-year-8-month-old boy with refractory bilateral asymmetrical tonic posturing seizures predominantly in the right arm due to atrophy of the left cerebral hemisphere after septic meningitis...
March 14, 2018: Brain & Development
Takuma Ohmichi, Masaki Kondo, Masahiro Itsukage, Hidetaka Koizumi, Shigenori Matsushima, Nagato Kuriyama, Kazunari Ishii, Etsuro Mori, Kei Yamada, Toshiki Mizuno, Takahiko Tokuda
OBJECTIVE The gold standard for the diagnosis of idiopathic normal pressure hydrocephalus (iNPH) is the CSF removal test. For elderly patients, however, a less invasive diagnostic method is required. On MRI, high-convexity tightness was reported to be an important finding for the diagnosis of iNPH. On SPECT, patients with iNPH often show hyperperfusion of the high-convexity area. The authors tested 2 hypotheses regarding the SPECT finding: 1) it is relative hyperperfusion reflecting the increased gray matter density of the convexity, and 2) it is useful for the diagnosis of iNPH...
March 16, 2018: Journal of Neurosurgery
Ken Kazumata, Haruto Uchino, Kikutaro Tokairin, Masaki Ito, Tohru Shiga, Toshiya Osanai, Masahito Kawabori
BACKGROUND: Cerebral hyperperfusion complicates the postoperative course of patients with moyamoya disease (MMD) following direct revascularization surgery. There is no clear distinction between cerebral hyperperfusion syndrome and benign postoperative increase in regional cerebral blood flow (rCBF). OBJECTIVE: The present study aimed to determine clinically relevant changes in rCBF, anatomical correlations, and factors associated with transient neurological symptoms following revascularization surgery in MMD...
March 9, 2018: World Neurosurgery
Guangming Wang, Jinlu Yu
INTRODUCTION: Chronic subdural hematoma(CSDH) can be treated by a relatively simple burr hole surgery. Acute subarachnoid hemorrhage (SAH) occurring after surgery for CSDH has been reported as a rare but severe complication. CASE REPORT: An 88-year-old female complained of progressive headache and dizziness for one month. A right fronto-temporo-parietal CSDH with a shift in the midline structures and lateral ventricle compression was shown by computed tomography (CT) scans...
March 3, 2018: International Journal of Surgery Case Reports
You-Zhen Feng, Xiao-Qiao Chen, Juan Yu, Xiao-Ling Liu, Zhong-Yuan Cheng, Wei-Wei Ren, Lie Feng, Xiang-Ran Cai
PURPOSE: The purpose of this study was to evaluate the utility of intravoxel incoherent motion diffusion-weighted imaging (IVIM DWI) parameters in identifying early renal function changes in diabetics. METHODS: A total of 40 patients with type 2 diabetes mellitus and 20 healthy control subjects underwent multiple b value DWI. The diabetic patients were stratified into two groups based on albuminuria category: NAU (normal to mildly increased albuminuria; ACR < 30 mg/g) and MAU (moderately increased albuminuria; 30 ≤ ACR < 300 mg/g)...
March 10, 2018: Abdominal Radiology
Kouichi Misaki, Naoyuki Uchiyama, Anri Inaki, Seigo Kinuya, Iku Nambu, Tomoya Kamide, Masanao Mohri, Yasuhiko Hayashi, Mitsutoshi Nakada
BACKGROUND AND PURPOSE: Hemodynamic impairments are considered risk factors of cerebral hyperperfusion after carotid artery stenting (CAS); measurement by SPECT using a subjective ROI method lacks consistency and reproducibility. MATERIALS AND METHODS: The present study compared objective perfusion analysis (stereotactic extraction estimation [SEE] method) with the ROI method for preoperative SPECT to predict the hyperperfusion phenomenon (HPP) after CAS. Preoperative resting asymmetry index (CBF ratio from the affected to unaffected hemisphere) and cerebrovascular reactivity (CVR) to acetazolamide were measured by N-isopropyl-p-[123 I]-iodoamphetamine SPECT using the SEE and ROI method in 84 patients...
March 7, 2018: Journal of Neuroradiology. Journal de Neuroradiologie
Hideyuki Matsumoto, Hideji Hashida, Yukitoshi Takahashi
This report describes a rare case presenting with dystonic seizures due to anti-N-methyl-D-aspartate (NMDA) receptor encephalitis. The patient was an 18-year-old woman with repeated right-dominant dystonic seizures even under sedation. Single-photon emission computed tomography (SPECT) showed intense hyperperfusion of the caudate nuclei, putamen, globus pallidus, thalamus, and insula on the left side, suggesting encephalitis. Antibodies against NMDA receptors were detected in the sera and cerebrospinal fluids...
September 2017: Case Reports in Neurology
Ralph Rahme, Tejaswi D Sudhakar, Marjan Alimi, Timothy G White, Rafael A Ortiz, David J Langer
BACKGROUND AND IMPORTANCE: Cerebral hyperperfusion syndrome (CHS) is a well-known complication of superficial temporal artery (STA) to middle cerebral artery (MCA) bypass for ischemic cerebrovascular disease. While this argues against "low flow" in the bypass construct, flow rates in the graft have not been previously quantified in the setting of CHS. CLINICAL PRESENTATION: A 58-yr-old man presented with recurrent left hemispheric ischemic strokes and fluctuating right hemiparesis and aphasia...
March 3, 2018: Operative Neurosurgery (Hagerstown, Md.)
Tomonori Iwata, Takahisa Mori, Yuhei Tanno, Shigen Kasakura, Kazuhiro Yoshioka
BACKGROUND: Cerebral hyperperfusion syndrome (CHS) is likely to occur after carotid revascularization in patients with stage 2 hemodynamic failure (st2HF), in whom the oxygen extraction fraction (OEF) increases. OBJECTIVE: The purpose of our study was to investigate whether measurement of the global cerebral OEF (gcOEF) by blood sampling can be used to estimate st2HF and anticipate CHS following carotid artery stenting (CAS). METHODS: The OEF was calculated by blood sampling just before and after elective CAS...
March 6, 2018: Journal of Neurointerventional Surgery
Meng Luen Lee, Ming Yuh Chang, Tung Ming Chang, Rei Cheng Yang, Ming Che Chang, Albert D Yang
Concurrent involvement of bilateral renal and cerebral arteries, usually incurred as stenosis, is rare in childhood-onset Takayasu arteritis (c-TA). We report the case of a 14-year-old girl, with c-TA, presenting with transient ischemic attack after endovascular revascularization for renal artery stenosis and cerebrovascular stroke after surgical revascularization for cerebral artery stenosis associated with childhood-onset moyamoya syndrome. We deem that decrease of blood pressure by endovascular revascularization and improvement of cerebral perfusion by surgical revascularization may have jeopardized the cerebral deep watershed zone to cerebral ischemia followed by cerebral hyperperfusion syndrome and caused transient ischemic attack and cerebrovascular stroke in our patient...
March 5, 2018: Journal of Korean Medical Science
Jeffrey R Sachs, Michael E Zapadka, Gautam S Popli, Jonathan H Burdette
Anti-N-methyl-d-aspartate receptor encephalitis is an increasingly recognized autoimmune disorder that results in substantial morbidity, prolonged hospital stays, and even death. The diagnosis is often delayed or unrecognized entirely as a result of absent or only subtle initial magnetic resonance imaging findings and a nonspecific clinical syndrome. The discovery of early imaging findings in this disease may help clinicians to more aggressively treat this autoimmune encephalitis and to potentially lessen morbidity and mortality...
December 2017: Radiology Case Reports
Yugeesh R Lankadeva, Junko Kosaka, Roger G Evans, Clive N May
The development of acute kidney injury (AKI) is both a significant and independent prognostic factor of mortality in patients with sepsis, but its pathophysiology remains unclear. Herein, we describe an ovine model of sepsis evoked by the administration of live Escherichia coli in which there is hypotension, peripheral vasodilatation with a large increase in cardiac output; a similar hyperdynamic state to that commonly reported in humans. Interestingly, in this sheep model of sepsis, despite an increase in global kidney blood flow, there is a progressive reduction in renal function...
2018: Methods in Molecular Biology
M Yigit, E Yigit, K A Turkdogan
Posterior reversible encephalopathy syndrome (PRES) is an entity characterized by headache, altered mental status, seizures, visual disturbances, and focal neurological signs. The most common etiologies of PRES are hypertension and renal failure, and the most frequent pathophysiology is hyperperfusion. PRES is generally symmetrical, often in the occipital and parietal lobes, and is typically characterized by vasogenic edema in the subcortical white matter. This study involves a 38-year-old female patient who had hypertension, used immunosuppressive drugs and was also found to have nephropathy...
February 2018: Nigerian Journal of Clinical Practice
Claire A J I Leenarts, Mark J F Haagmans, Lee H Bouwman, Cornelis J J M Sikkink
Reperfusion syndrome (RS) after revascularization of an arterial occlusion of the lower leg is a well-known complication. RS after splanchnic revascularization, however, is an infrequent and less-known phenomenon. We present a patient with persisting abdominal complaints after revascularization of the celiac trunk and superior mesenteric artery suggesting reocclusion. Although computed tomography angiography showed patent splanchnic arteries, an impressive hyperperfusion state of liver and spleen was visualized...
January 2018: Journal of Natural Science, Biology, and Medicine
Kimitoshi Sato, Shun Tsudaka, Takanori Miki, Norikata Kobayashi, Taro Yamashita, Kiyoharu Imataka, Takashi Yoshida, Fuminori Shimizu
The concept of "watershed shift"(WS)has been proposed as a cause of the ischemic complications following a superficial temporal artery-middle cerebral artery(STA-MCA)bypass operation performed for the management of moyamoya disease. Previous reports have observed that only 1.2-5.7% of the patients who underwent a bypass operation for the management of moyamoya disease developed cerebral infarction secondary to the WS phenomenon. To date, the WS phenomenon has not been objectively proven on imaging studies...
February 2018: No Shinkei Geka. Neurological Surgery
Salvatore Rudilosso, Carlos Laredo, Marco Mancosu, Nuria Moya-Planas, Yashu Zhao, Oscar Chirife, Ángel Chamorro, Xabier Urra
Hypoperfusion is the typical perfusion pattern associated with recent small subcortical infarcts of the brain, but other perfusion patterns may be present in patients with these infarcts. Using CT perfusion, we studied 67 consecutive patients who had a small subcortical infarct at a follow-up MRI study to investigate the correlation between the perfusion pattern and the clinical and radiological course. On CT perfusion map analysis, 51 patients (76%) had focal hypoperfusion, 4 patients (6%) had hyperperfusion and the remaining 12 patients (18%) showed no abnormalities...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
Baofeng Xu, Chao Li, Yunbao Guo, Kan Xu, Yi Yang, Jinlu Yu
At present, there is limited understanding of chronic total occlusion (CTO) of the internal carotid artery (ICA). Therefore, the present report collected related cases from PubMed and reviewed the literature. Cerebral vessels may form collateral circulation immediately or gradually following CTO of the ICA. The natural history of CTO of the ICA includes a variety of outcomes, all of which are biased toward a non-benign progressive process and are characterized by insufficient cerebral perfusion, embolus detachment and cognitive dysfunction...
February 2018: Biomedical Reports
Sakiko Itaya, Zen Kobayashi, Kokoro Ozaki, Nozomu Sato, Yoshiyuki Numasawa, Kinya Ishikawa, Takanori Yokota, Hiroshi Matsuda, Shuzo Shintani
A 58-year-old man consulted our hospital due to a 2-year history of dysarthria and a 1-month history of blepharospasm. In addition to the ataxic dysarthria and blepharospasm, a neurological examination demonstrated slight ataxia of the trunk and lower limbs. Brain MRI demonstrated atrophy of the upper portion of the cerebellar vermis. Gene analysis established a diagnosis of spinocerebellar ataxia type 31 (SCA31). SPECT with the three-dimensional stereotaxic ROI template (3DSRT) software program demonstrated hyperperfusion in the lenticular nucleus and thalamus...
February 9, 2018: Internal Medicine
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"