Bilateral evacuation of bilateral non-acute subdural hematomas - evaluation of postoperative outcomes and complications.

INTRODUCTION: Bilateral finding of non-acute subdural hematomas (NASH) is less common compared to unilateral occurrence. The aim of this study was to evaluate results of surgical treatment of bilaterally treated bilateral NASH. METHODS: Retrospective analysis of patients, who underwent bilateral surgical evacuation of NASH (2014-2020). This study was conducted to determine the association between the incidence of postoperative complications and outcome, hematoma recurrence and selected risk factors (including volumetric parameters). Correlations between variables were assessed by using Spearman's correlation. Chi-squared test, Student's t-test (unpaired and paired) and one-way ANOVA were used for univariate analysis. RESULTS: Our study included 29 patients with bilateral NASH who underwent bilateral surgical hematoma evacuation. The laminar hematoma type was associated with higher hematoma recurrence rate (p=0.032) and worse clinical outcome (p=0.043). Larger PHV was significantly associated with larger PV after surgery and worse neurological outcome. Larger PHV, PHCV and PV were significantly associated with higher incidence of NASH recurrence (p=0.0008, p=0.0007 and p=0.00006). CONCLUSION: The laminar hematoma type and larger PHV were significant risk factors for the recurrence of bilateral NASH and worse neurological outcome. Larger PHCV and PV were significantly associated with hematoma recurrence (Tab. 7, Fig. 3, Ref. 24).

Contrast-induced encephalopathy.

Contrast-induced encephalopathy (CIE) is a rare complication of the intravascular application of a contrast agent. CIE can be manifested by headache, cortical blindness, consciousness disorders, seizures, or focal neurological deficit. Neurological symptoms are typically transient with temporary abnormal findings on a brain scan. Urgent neuroimaging is important to obtain the correct diagnosis, especially in cases that require an acute management and treatment. We present a case of CIE after a digital subtraction angiography of the vertebral arteries in the patient with a symptomatic pre-occlusive stenosis of the posterior cerebral artery (Ref. 36). Text in PDF www.elis.sk Keywords: encephalopathy, iodixanol, contrast agent, cortical blindness, cerebral angiography.

The age at onset in Multiple Sclerosis is associated with patient's prognosis.

BACKGROUND: The causes of the individual differences in the rate of disability progression in multiple sclerosis (MS) are still not completely clear. According to the long-term prognosis of MS patients, the search for new valuable prognostic markers of "benign" or "malign" MS is necessary. OBJECTIVES: Our aim was to assess the possible association of MS onset age with the disease disability progression rate in Slovak patients with MS. METHODS: By the unique pattern of evaluation of disability progression rate using Multiple Sclerosis Severity Score (MSSS), each of 270 MS patients was defined as slow-progressing, mid-rate progressing or rapidly progressing. RESULTS: We found a significant differences in the age at onset between MS patients with different rate of disability progression (p(K-W)<0,00005). The faster was a disability progression assessed by MSSS score, the higher was the MS onset age. CONCLUSION: We showed for the first time in Central European Slovak population that MS onset age is an early marker that is in the positive correlation with disease disability progression rate, evaluated by MSSS score. We conclude that relapsing-remitting MS patients older at clinical onset have a higher risk of unfavorable prognosis (Tab. 2, Fig. 1, Ref. 21).

Type and occurrence of serious complications in patients after mild traumatic brain injury.

Traumatic brain injury (TBI) remains a major public health and socio-economic problem, and 70-90% of all TBIs are classified as mild. Mild TBIs and concussions are mostly considered to be non-serious conditions with symptoms subsiding within a few days or weeks. However in 10-15% of patients, the symptoms persist one year after concussion and mostly include headache, fatigue, irritability, and cognitive problems (e.g. memory, concentration). These persisting symptoms negatively influence patient daily activities as postconcussion syndrome (PCS). Second-impact syndrome (SIS) is a very rare but usually fatal condition and occurs when repeated brain injuries lead to a catastrophic diffuse brain swelling. There is no scientific evidence on the incidence and risk of SIS. Chronic traumatic encephalopathy (CTE) is a progressive degenerative disease of the brain found in patients with a history of repetitive brain trauma. CTE presents with behavioural, cognitive, and motor symptoms. The literature to date lacks prospective epidemiological studies of the incidence of CTE. In recent medical literature, there is a description of 110 athletes with postmortem diagnosis of CTE (Tab. 1, Ref. 37).

Tumefactive demyelination of the spinal cord: a case report.

STUDY DESIGN: Case report. OBJECTIVES: We report on a 52-year-old male patient with tumefactive demyelination of the spinal cord. SETTING: University Hospital and Jessenius Faculty of Medicine, Comenius University, Martin, Slovakia. BACKGROUND: In contrast to relatively frequent tumefactive fulminant lesions in the brain, cases affecting the spinal cord in isolation have been reported less frequently. METHODS: Description of the case report. RESULTS: Clinical, neuroradiological and necropsy findings are described in a 52-year-old man with tumefactive fulminant demyelination of the spinal cord. Progression of the demyelination process produced paraplegia, mild paresis of the right upper limb, neurogenic bladder and sensitive loss over 2 weeks. MRI scans revealed several ovoid lesions in cervical segments and tumefactive T2-hyperintense signals with oedema and post-contrast enhancement located in thoracic segments Th3 to Th6. Cerebrospinal fluid (CSF) examination displayed lymphomonocytic pleocytosis with normal proteinorhachia, positive CSF oligoclonal IgG bands (OCB) and elevated IgG index (1.55). Serum anti-AQP4-Ab was not tested. Stored frozen CSF samples were later repeatedly examined with negative findings of anti-AQP4-Ab. Treatment with high-dose methylprednisolon and plasma exchange had limited effect. Immunosuppressive medication was interrupted because of an acute urinary infection. The patient died suddenly because of pulmonary embolism as a secondary complication. Histopathology of the spinal cord confirmed active demyelination. We considered that tumefactive demyelination could be a variant of neuromyelitis optica. CONCLUSION: Our case could be anti-AQP4-Ab-negative longitudinally extensive transverse myelitis, a variant of neuromyelitis optica.

Clinical correlations of proton magnetic resonance spectroscopy findings in acute phase after mild traumatic brain injury.

INTRODUCTION: Standard brain magnetic resonance imaging (MRI) is typically normal in most patients after mild traumatic brain injury (MTBI). Proton magnetic resonance spectroscopy (¹H-MRS) is more sensitive to detect subtle post-traumatic changes. The aim of the study was to evaluate the clinical correlations of these changes in the acute phase (within 3 days) after MTBI. METHODS: Twenty-one patients with MTBI and 22 controls were studied. Both groups underwent neuropsychological testing and single-voxel ¹H-MRS examination of both frontal lobes and upper brainstem. RESULTS: Significant decrease in NAA was found in both frontal lobes and in NAA/Cre ratio in the right frontal lobe (p < 0.05). Correlation analysis showed a correlation of NAA in the left frontal lobe with Backward Digit Span (p = 0.022) and Stroop test A (p = 0.0034) and a weak correlation with TMT B time (p = 0.046). The NAA/Cre in the right frontal lobe correlated with Stroop test A (p = 0.007) and with the total score of Digit Span (p = 0.016). Lower NAA was found in the upper brainstem (p = 0.0157) in the sub-group of patients with post-traumatic unconsciousness. CONCLUSIONS: This study found a correlation of ¹H-MRS metabolite changes with cognitive decline and presence or absence of loss of consciousness in the acute phase after MTBI.

[Breech presentation - an analysis of results in one perinatal center]. / Poloha plodu koncom panvovým - analýza výsledkov jedného perinatologického centra.

OBJECTIVE: A retrospective analysis of medical records during years 2007-2011 considers maternal and fetal outcome in patients with breech presentation terminated by vaginal delivery versus caesarean section (CS). DESIGN: Retrospective analysis. SETTING: Department of Gynecology and Obstetrics, Jessenius Faculty of Medicine, Comenius University, Martin, Slovak Republic. METHODS: Authors devided patients with breech presentation of fetus (n = 299) to groups of single pregnancies terminated in term (n = 197), before term (n = 67) and to group of multiple pregnancies (n = 35). All groups were devided according to the way of termination of pregnancy by vaginal delivery, by acute CS and by planned CS. Main followed parameters: parity, gestational week, Apgar score, birth weight, birth length, fetal gender, indications for CS, mortality and neonatal morbidity, umbilical artery pH, convulsions, admit to neonatal intensive care unit, intubation of neonate, intracranial bleeding, cervical spine and peripheral nerve injuries. RESULTS: Total cohort of breech deliveries was 299. In the group of single pregnancies in term was 19.8% terminated by vaginal delivery (n = 39), 32.5% deliveries by acute CS (n = 64). The most common indication was fetal hypoxia (43.8%). By planned CS was terminated 47.7% deliveries (n = 94). The most common indication for CS was footling presentation (54.3%). Severe neonatal morbidity was rare and without significant difference according to the type of termination of pregnancy. Neonatal outcome was comparable in the group of preterm deliveries(n = 67) terminated by vaginal delivery or by CS. All neonatal deaths were associated with extreme prematurity and not with type of termination of gravidity. CONCLUSION: Clinical outcomes between vaginal breech deliveries and breech deliveries terminated by CS in term in singleton pregnancies were not significant different. Mortality of neonates delivered by preterm delivery was associated with severe prematurity.

Single parameter wrist ultrasonography as a first-line screening examination in suspected carpal tunnel syndrome patients.

UNLABELLED: Carpal tunnel syndrome (CTS) is the most common form of peripheral nerve entrapment. Electromyography with selected nerve conduction studies (NCS) is an accepted diagnostic tool in CTS patients. Ultrasonography presents a widely available and low cost investigation method and its position in CTS diagnostics needs further clarification with concrete recommendations for clinical practice. A prospective study of 37 patients with 74 wrists (59 wrists with suspected CTS) was done. Normative data were obtained from a control group of 25 healthy persons (50 wrists) age and sex matched. All persons underwent ultrasonographic examination (median nerve cross-sectional area at carpal tunnel entrance measurement--CSA) and median NCS studies (distal motor and sensory latency measurement--DML and DSL). RESULTS: CSA has a sensitivity of 93% (CI 84-97%) and specificity of 96% (CI 87-99%) in our patients group. Conventional first-line NCS studies results in our patients groupare as follows: DML sensitivity 58% (CI 45-69%) and specificity 100% (CI 93-100%); DSL sensitivity 88% (CI 78-94%) and specificity 94% (CI 84-98%). CONCLUSION: We recommend the use of single-parameter wrist ultrasonography as a first-line screening laboratory method in suspected CTS diagnosis (Ref. 14). Full Text (Free, PDF) www.bmj.sk.

Hypothalamic damage in multiple sclerosis correlates with disease activity, disability, depression, and fatigue.

OBJECTIVES: Disturbances in the hypothalamo-pituitary axis are supposed to modulate activity of multiple sclerosis (MS). We hypothesised that the extent of HYP damage may determine severity of MS and may be associated with the disease evolution. We suggested fatigue and depression may depend on the degree of damage of the area. METHOD: 33 MS patients with relapsing-remitting and secondary progressive disease, and 24 age and sex-related healthy individuals (CON) underwent 1H-MR spectroscopy (1H-MRS) of the hypothalamus. Concentrations of glutamate + glutamin (Glx), cholin (Cho), myoinositol (mIns), N-acetyl aspartate (NAA) expressed as ratio with creatine (Cr) and NAA were correlated with markers of disease activity (RIO score), Multiple Sclerosis Severity Scale (MSSS), Depressive-Severity Status Scale and Simple Numerical Fatigue Scale. RESULTS: Cho/Cr and NAA/Cr ratios were decreased and Glx/NAA ratio increased in MS patients vs CON. Glx/NAA, Glx/Cr, and mIns/NAA were significantly higher in active (RIO 1-2) vs non-active MS patients (RIO 0). Glx/NAA and Glx/Cr correlated with MSSS and fatigue score, and Glx/Cr with depressive score of MS patients. In CON, relationships between Glx/Cr and age, and Glx/NAA and fatigue score were inverse. CONCLUSION: Our study provides the first evidence about significant hypothalamic alterations correlating with clinical outcomes of MS, using 1H-MRS. The combination of increased Glu or mIns with reduced NAA in HYP reflects whole-brain activity of MS. In addition, excess of Glu is linked to severe disease course, depressive mood and fatigue in MS patients, suggesting superiority of Glu over other metabolites in determining MS burden.

Accuracy of IgM immunoblotting to confirm the clinical diagnosis of early Lyme disease.

BACKGROUND: A 2-test approach for the serologic diagnosis of Lyme disease has recently been proposed. A positive or equivocal result on a first-stage test (eg, an enzyme immunoassay) is followed by a Western immunoblot test. For a sample to be considered seropositive for Lyme disease, the immunoblot result must be positive. OBJECTIVES: To assess the accuracy of IgM immunoblotting for detection of early Lyme disease and to establish interpretative criteria for a commercially available immunoblot assay. METHODS: Serum samples from 44 patients with erythema migrans were tested by an IgM immunoblot assay. All patients were culture-positive for Borrelia burgdorferi. Serum samples from 2 different control groups were also tested. Interpretative criteria were developed using receiver operating characteristic curves. RESULTS: The presence of any 2 IgM bands was found to be the optimal criterion for a positive test result, and in patients with illness of less than 7 days' duration, this was significantly more sensitive than the criterion of any 2 of the 3 specific bands defined by the Centers for Disease Control and Prevention/Association of State and Territorial Public Health Laboratory Directors Lyme Disease Workgroup (P < .05). Specificity of the criterion of any 2 bands was 100% for 1 group of controls but only 96% for the more clinically relevant control group; this small difference had a large impact on the positive predictive value in populations at low risk for Lyme disease. CONCLUSIONS: Using a commercially available immunoblot test kit, the presence of any 2 IgM bands is proposed as a positive result. The predictive value of a positive IgM immunoblot result, however, is poor in patients with minimal clinical evidence for Lyme disease.

[Contemporary view on mild brain injuries in adult population]. / Nácrt súcasného pohl'adu na problematiku l'ahkých poranení mozgu so zameraním na dospelú populáciu.

Mild brain injury is one of the most common neurological a neurotraumatological diagnoses. The pathophysiological basis of mild brain injury is frequently a diffuse axonal damage of variable degree. In the acute phase of mild brain injury we have to identify 1% of patients who will undergo neurosurgery because of vital need. The analysis of patient's personal history, screening of risk factors, neuropsychological testing and imaging methods (CT, MRI) are irreplaceable in the diagnostic process of mild brain injury. Though the mild brain injury is currently considered as an irrelevant traumatic event, approximately 10% of patients develop the so-called post-concussion syndrome.

Late appearance of pneumothorax after subclavian venipuncture.

Pneumothorax is a well-recognized complication of subclavian vein catheterization. Chest radiography is advised soon after the procedure. Implied here is that when pneumothorax occurs, it will do so shortly after attempted subclavian venipuncture. Two cases of late pneumothorax are reported, one of which became clinically apparent four days after the procedure. If undetected, this may present a hazard in preoperative patients.

Improving the autopsy rate at a university hospital.

PURPOSE: Although the autopsy is widely recognized as an invaluable tool for medical education, as well as the gold standard by which the accuracy of diagnoses are measured, there has been a steady decline in the autopsy rate over the last 20 years. At Westchester County Medical Center, a university hospital of New York Medical College, we observed an alarming drop in our autopsy rate. We realized that the methods used to obtain consent from the family of the deceased were haphazard and often left to the junior houseofficer available. We hypothesized that we could increase the autopsy rate by explicitly involving senior housestaff in the task of obtaining autopsy consent after giving them formal instruction in the technique of asking for consent and by having them record information regarding their encounters with families. PATIENTS AND METHODS: Data concerning the frequency of autopsies at Westchester County Medical Center were collected for a 3-month period in 1990. A corresponding period in 1991 was designated the study period during which our intervention was initiated. All medical examiner's cases were excluded for both periods since autopsy consent for these patients is not at the discretion of the family. At the start of the study period and each month thereafter, formal instruction regarding obtaining permission for autopsy was given to all senior residents assigned to direct patient care duty. The senior resident was required to complete a data form regarding autopsy request on each patient who died. RESULTS: Nine autopsies among 89 deaths (10%) were obtained during the study period in 1990, compared with 31 autopsies among 116 deaths (27%) in 1991 (p less than 0.01). In 1991, autopsies were more likely to be obtained when death was unexpected (p less than 0.05). CONCLUSION: The institution of a formal program to educate and involve the senior resident staff in obtaining autopsy consent can significantly improve the autopsy rate at a university hospital.

Effect of New York State's do-not-resuscitate legislation on in-hospital cardiopulmonary resuscitation practice.

PURPOSE: On April 1, 1988, New York State enacted legislation governing the withholding of cardiopulmonary resuscitation (CPR). Suggestions that the mandated protocol for withholding CPR is too cumbersome and will result in an increase in CPR attempts led us to study the effect of the new law on in-hospital resuscitation practice. PATIENTS AND METHODS: We retrospectively reviewed the charts of 245 adult in-patients at a county teaching hospital who died during three-month periods before and after the law took effect. RESULTS: There was a statistically nonsignificant decline in the frequency of CPR attempts at the time of death, from 59 (50%) of 119 patients in 1987 to 57 (45%) of 126 patients in 1988. Use of explicit written "do-not-resuscitate" (DNR) orders increased significantly from 13 (22%) of 60 patients who died without CPR in 1987 to 64 (93%) of 69 patients in 1988. Patient and family involvement in decisions to withhold CPR was common before the law and did not change significantly. CONCLUSION: Although changing the way DNR decisions are documented, the legislation resulted in no significant change either in the frequency of CPR or in the degree to which patients are involved in these decisions.

Persistence of multiply antibiotic-resistant Campylobacter jejuni in a patient with the acquired immune deficiency syndrome.

Chronic diarrhea due to Campylobacter jejuni has been described in patients with hypogammaglobulinemia. A patient with the acquired immune deficiency syndrome (AIDS) and normal total serum immunoglobulins had persistent diarrhea and C. jejuni on stool culture for seven and a half months despite repeated antibiotic therapy. Antibiotic sensitivity studies revealed the C. jejuni to be multiply antibiotic-resistant. Evaluation of the mechanism of resistance showed the organism harbored a conjugative plasmid capable of transferring resistance to tetracycline, but not to other antibiotics. It is concluded that C. jejuni infection may rarely result in chronic diarrhea in patients with AIDS. The combination of an immune deficiency state including abnormal B cell function previously described in AIDS and multiple antibiotic resistance may have contributed to the persistence of the organism in this case.

Predictive value of a screening test for antibodies to HTLV-III.

A test for the detection of antibodies to HTLV-III is available and will be widely used to screen donated blood to prevent transfusion-associated acquired immunodeficiency syndrome (AIDS). Based upon the sensitivity and specificity, the authors calculated the expected predictive values for different groups of asymptomatic individuals using Bayes' theorem. The prevalence of HTLV-III infection has great impact upon the positive and negative predictive values of the test. For a member of the general population there is a less than 3% chance that a positive test represents a true positive. High-risk patients, such as hemophiliacs, with a positive test will have a greater than 95% chance of actually having antibodies to HTLV-III, but the negative predictive value of the test in this group is less than ideal. The authors recommend that all positive tests for HTLV-III be confirmed by more specific methods when obtained in low-risk people. Members of high-risk groups for AIDS should continue to refrain from donating blood, despite the availability of the screening test.

[Molecular structure of pigeon genome. Revealing of clusters consisting of prolonged homopolymeric and short palindromic sequences]. / Molekuliarnaia organizatsiia genoma golubia. Obnaruzhenie klasterov, sostoiashchikh iz protiazhennykh gomopolimernykh i korotkikh palindromnykh Posledovatel'nostei.

Isolated from pigeon genome short (approximately 450 nucleotides) and long (approximately 8000 nucleotides) single-stranded DNA fragments containing prolonged (greater than or equal to 300 nucleotides) polydeoxyandenylic sequences have been studied. Based on the analysis carried out we come to the conclusion that for the pigeon genome the prolonged poly(dA)-sequences are located as clusters where a large amount of short palindromic sequences occur.

Early and delayed auditory oddball ERPs and brain MRI in patients with MTBI.

INTRODUCTION: Mild traumatic brain injury (MTBI) is a common neurotraumatologic diagnosis. It is possible to confirm objective cognitive impairment in MTBI patients not only by complex neuropsychological testing but also by event-related potentials (ERPs). The most common ERPs used in clinical practice are based on an oddball paradigm. Magnetic resonance imaging (MRI) is not routinely used in MTBI despite its proven greater sensitivity and specificity in comparison with computer tomography (CT). METHODS: This study investigated 31 MTBI patients and 31 sex and age-matched healthy controls. Both groups underwent clinical neurological examinations. Auditory oddball ERPs and brain MRI were done early after the injury and 3-7 months later. RESULTS: There were no significant sex, age and education differences between the analysed groups. No significant differences were found in N2 and P3 wave parameters in both ERP examinations. CONCLUSION: Standard auditory oddball ERPs are not sensitive enough to detect and/or quantify subtle objective neuropsychological changes in selected MTBI patients, especially those with traumatic MRI brain lesions. More complex auditory or other oddball paradigms have to be tested in the future.

Impaired cognitive functions in mild traumatic brain injury patients with normal and pathologic magnetic resonance imaging.

INTRODUCTION: Mild traumatic brain injury (MTBI) is a common neurological (neurotraumatological) diagnosis. As well as different subjective symptoms, many patients develop neuropsychological dysfunction with objective impairment of attention, memory and certain executive functions. Magnetic resonance imaging (MRI) is not routinely used in MTBI patients despite its proven greater sensitivity and specificity in comparison with computed tomography (CT). METHODS: The patient group consisted of 30 persons with MTBI and the control group consisted of 30 sex- and age-matched healthy volunteers. Both groups underwent neurological examination, neuropsychological testing (including the Postconcussion Symptoms Scale questionnaire, PCSS) and brain MRI (the patient group within 96 h after injury). RESULTS: The analyzed groups did not differ significantly in terms of sex, age, or level or duration of education. MRI pathological findings (traumatic and nonspecific) were present in nine patients. Traumatic lesions were found in seven patients. Nonspecific white matter lesions were found in five healthy controls. There were significant differences between MTBI patients and controls in terms of subjective symptoms (PCSS) and selected neuropsychological tests. Statistically significant neuropsychological differences were found between MTBI patients with true traumatic lesions and MTBI patients with nonspecific lesions. CONCLUSION: There is evidence that MTBI patients with true traumatic MRI lesions are neuropsychologically different from MTBI patients with nonspecific MRI lesions or normal brain MRI. These results support the hypothesis that some acute MTBI signs and symptoms have a real organic basis which can be detected by selected new MRI modalities.