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1.
Folia Morphol (Warsz) ; 74(2): 229-35, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26050812

RESUMO

BACKGROUND: The use of domestic swine as an experimental animal is increasing steadily. Swine organs are the best animal model for urological experiments. The aim of the study was to evaluate the course and size of intermediate veins in a swine kidney. The research results were compared with the results obtained from studies on venous vascularisation of human kidneys. The knowledge of the above-mentioned vessels is important both in human and veterinary medicine and will enable researchers to compare and notice differences between human and swine organs. MATERIALS AND METHODS: The study was conducted on 94 kidneys, 47 right ones and 47 left ones, taken from adult domestic swines (Sus scrofa domestica). The kidneys were prepared and corrosion casts were made. RESULTS: The average lumen diameter of secondary intermediate veins was 7.96 mm. The average diameter of the primary intermediate veins directly inserted in the renal vein (type A) and primary intermediate veins inserted in the secondary intermediate veins (type B) amounted to 6.7 mm and 4.75 mm, respectively. The average length of primary intermediate veins of type A was 21.91 mm. Secondary intermediate veins were shorter - on average 19.83 mm. Primary intermediate veins of type B were on average 12.91 mm long. CONCLUSIONS: Intermediate veins are formed in the area of vascular anastomoses on the level of renal papillae. The following veins can be distinguished: primary intermediate veins of type A and type B, as well as secondary intermediate veins. Secondary intermediate veins and primary intermediate veins of type A run only on the ventral side of the renal pelvis. Only the primary intermediate veins of type B can run on the dorsal side. From the anatomy point of view, intermediate veins of swine kidneys are very similar to equivalent vessels in human kidneys as regards their run and anastomoses.

2.
Folia Morphol (Warsz) ; 74(1): 78-83, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25792400

RESUMO

BACKGROUND: The aim of our study was to determine the localisation of the inferior margin of the optic canal in relation to the infraorbital canal/groove complex (IOC/G complex) and zygomaticoorbitale (ZO) as the potential useful landmarks for reducing dangerous complications following surgical and invasive procedures. MATERIALS AND METHODS: Sixty-four orbits of thirty-two human skulls were investigated. The distances between: the inferior margin of the optic canal and the posterior margin of the infraorbital groove measured at its medial border (OC-S); the inferior margin of the optic canal and the posterior margin of the roof of the infraorbital canal (OC-C); the inferior margin of the optic canal and the zygomaticoorbitale (OC-ZO) - were measured. The left/ /right symmetry ratio and the asymmetry index were counted. The symmetry between the contralateral measurements was analysed and statistical analysis was performed. RESULTS: On the right side the mean distance from the inferior margin of the optic canal to: the posterior margin of the infraorbital groove measured at its medial border; to the posterior margin of the roof of the infraorbital canal; and to the zygomaticoorbitale were: 23.41 ± 3.10 mm; 34.44 ± 5.30 mm; and 47.53 ± 4.13 mm, respectively. On the left side the mean distance from the inferior margin of the optic canal to: the posterior margin of the infraorbital groove measured at its medial border; to the posterior margin of the roof of the infraorbital canal; to the zygomaticoorbitale were 23.69 ± 2.80 mm; 36.75 ± 5.10 mm; 46.84 ± 3.24 mm, respectively. CONCLUSIONS: The presented measurements may be particularly helpful for endoscopic decompression in patients with the thyroid ophthalmopathy to avoid the complications.

3.
Biopolymers ; 102(4): 322-34, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24801754

RESUMO

Peptides with enhanced resistance to proteolysis, based on the amino acid sequence of the F11 receptor molecule (F11R, aka JAM-A/Junctional adhesion molecule-A), were designed, prepared, and examined as potential candidates for the development of anti-atherosclerotic and anti-thrombotic therapeutic drugs. A sequence at the N-terminal of F11R together with another sequence located in the first Ig-loop of this protein, were identified to form a steric active-site operating in the F11R-dependent adhesion between cells that express F11R molecules on their external surface. In silico modeling of the complex between two polypeptide chains with the sequences positioned in the active-site was used to generate peptide-candidates designed to inhibit homophilic interactions between surface-located F11R molecules. The two lead F11R peptides were modified with D-Arg and D-Lys at selective sites, for attaining higher stability to proteolysis in vivo. Using molecular docking experiments we tested different conformational states and the putative binding affinity between two selected D-Arg and D-Lys-modified F11R peptides and the proposed binding pocket. The inhibitory effects of the F11R peptide 2HN-(dK)-SVT-(dR)-EDTGTYTC-CONH2 on antibody-induced platelet aggregation and on the adhesion of platelets to cytokine-inflammed endothelial cells are reported in detail, and the results point out the significant potential utilization of F11R peptides for the prevention and treatment of atherosclerotic plaques and associated thrombotic events.


Assuntos
Aterosclerose/tratamento farmacológico , Desenho de Fármacos , Fibrinolíticos/uso terapêutico , Molécula A de Adesão Juncional/química , Peptídeos/uso terapêutico , Sequência de Aminoácidos , Animais , Sítios de Ligação , Citocinas/metabolismo , Fibrinolíticos/farmacologia , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Humanos , Camundongos , Modelos Moleculares , Simulação de Acoplamento Molecular , Dados de Sequência Molecular , Peptídeos/química , Peptídeos/farmacologia , Adesividade Plaquetária/efeitos dos fármacos , Agregação Plaquetária/efeitos dos fármacos , Proteínas Recombinantes/metabolismo
4.
Folia Morphol (Warsz) ; 72(4): 311-7, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24402752

RESUMO

BACKGROUND: The aim of the study was to precisely describe and classify the infraorbital canal/groove (IOC/G) complex in dry human skulls and to evaluate the presence of asymmetry in the IOC/G complex. MATERIALS AND METHODS: Seventy orbits of 35 human skulls were investigated.The following distances were measured: the distance between the posterior and anterior margin of the infraorbital groove (S-C); the posterior margin of the infraorbital canal and the infraorbital foramen (C-IOF); and the total length of the infraorbital canal-groove complex (S-C-IOF). The symmetry of the contralateral measurements was analysed. RESULTS: Three types of the IOC/G complex were distinguished: types I, II, III, whose respective incidences were 11.4%, 68.6%, 20.0%. The mean length of the infraorbital groove plus canal complex on the right and left with standard deviation were 27.78±3.69 mm and 28.06±3.37 mm, respectively. CONCLUSIONS: The results presented in this study may be particularly helpful for surgery in patients with blow-out fractures and different endoscopic and reconstructive procedures in the region of the inferior orbital wall. The type III IOC/G complex, according to our classification, seems the most likely to be exposed to trauma during surgical manipulations.


Assuntos
Órbita/anatomia & histologia , Órbita/cirurgia , Humanos
5.
Biomed Pharmacother ; 159: 114289, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36696802

RESUMO

The aim of the study was to confirm whether cell substrate stiffness may participate in the regulation of fibrosis. The involvement of integrin α2ß1, focal adhesion kinase (FAK) and Src kinase in signal transmission was investigated. Human atrial fibroblasts and myofibroblasts were cultured in both soft (2.23 ± 0.8 kPa) and stiff (8.28 ± 1.06 kPa) polyacrylamide gels. The cells were derived from the right atrium of patients with aortal stenosis undergoing surgery. The isolated cells, identified as fibroblasts or myofibroblasts, were stained positively with α smooth muscle actin, vimentin and desmin. The cultures settled on stiff gel demonstrated lower intracellular collagen and collagen type I telopeptide (PICP) levels; however, no changes in α1 chain of procollagen type I and III expression were noted. Inhibition of α2ß1 integrin by TC-I 15 (10-7 and 10-8 M) or α2 integrin subunit silencing augmented intracellular collagen level. Moreover, FAK or Src kinase inhibitors increased collagen content within the culture. Lower TIMP4 secretion was reported within the stiff gel cultures but neither MMP 2 nor TIMP-1, 2 or 3 release was altered. The stiff substrate cultures also demonstrated lower interleukin-6 release. Substrate stiffness modified collagen deposition within the atrial fibroblast and myofibroblast cultures. The elasticity of the cellular environment exerts a regulatory influence on both synthesis and breakdown of collagen. Integrin α2ß1, FAK and Src kinase activity participates in signal transmission, which may influence fibrosis in the atria of the human heart.


Assuntos
Fibrilação Atrial , Quinases da Família src , Humanos , Proteína-Tirosina Quinases de Adesão Focal/metabolismo , Quinases da Família src/metabolismo , Integrina alfa2beta1/metabolismo , Miofibroblastos/metabolismo , Fibrilação Atrial/metabolismo , Constrição Patológica/metabolismo , Colágeno/metabolismo , Fibroblastos/metabolismo , Átrios do Coração/metabolismo , Fibrose , Células Cultivadas
6.
Int J Clin Pharmacol Ther ; 49(10): 577-86, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21961482

RESUMO

BACKGROUND: ADRs represent a significant problem in drug utilisation. The prevalence of admissions caused by ADRs varies depending on the observational site, studied population, data collection method and the used definitions. Women seem to be more frequently affected than men. OBJECTIVE: To assess the incidence and quality of ADRs related to hospital admissions, to identify the drugs most commonly involved and to define risk factors and preventive strategies for those ADRs. MATERIAL AND METHODS: 3,190 medical records of all newly admitted internal ward patients were assessed in a prospective observational study in an internal hospital over 6 months. Potential ADRs at hospital admission were identified following a list of suspicious symptoms and laboratory results. Cases were evaluated by means of a computer tool and data-base specialized on detecting causality and severity of ADRs. RESULTS: 304 ADRs were identified in 242 patients (7.6%), with 60% directly leading to admission. More women than men encountered an ADR (10 vs. 6%, p < 0.005). Analyzed separately by age groups, this gender difference became significant at an age of ≥ 81 years. The most common ADRs were electrolyte imbalances and over-anticoagulation. Diuretics and vitamin K antagonists were significantly correlated with ADRs. 62% of all ADRs were severe or life-threatening. CONCLUSION: ADRs leading or related to hospital admission are highly prevalent. Older age and female gender are significantly associated with ADR related hospital admissions. Causative drugs are the ones prescribed most frequently. Multidisciplinary preventive strategies and surveillance methods are necessary to ensure better care and patient safety especially for elderly women.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia , Sistemas de Notificação de Reações Adversas a Medicamentos , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Interações Medicamentosas , Feminino , Hospitalização , Humanos , Masculino , Pessoa de Meia-Idade , Segurança do Paciente , Risco , Caracteres Sexuais
7.
Clin Oncol (R Coll Radiol) ; 33(11): 723-734, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34535357

RESUMO

Radiation therapy is a well-established approach for safely and non-invasively treating solid tumours and benign diseases with high precision and accuracy. Cardiac radiation therapy has recently emerged as a non-invasive treatment option for the management of refractory ventricular tachycardia. Here we summarise existing clinical and preclinical literature surrounding cardiac radiobiology and discuss how these studies may inform basic and translational research, as well as clinical treatment paradigms in the management of arrhythmias.


Assuntos
Radiocirurgia , Taquicardia Ventricular , Arritmias Cardíacas , Coração , Humanos , Radiobiologia , Taquicardia Ventricular/cirurgia
8.
J Physiol Pharmacol ; 70(2)2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31356185

RESUMO

A suitable inflammatory signal influences extracellular matrix accumulation and determines the quality of the myocardial infarction scar. The aim of the present study was to determine the influence of mast cell sonicates or histamine on collagen accumulation in heart myofibroblast culture and on the deposition of collagen in the myocardial infarction scar. The histamine receptor involved in the process was investigated. Myocardial infarction was induced by ligation of the left coronary artery. Myofibroblasts were isolated from the scar of myocardial infarction. The effects of mast cell sonicates, histamine and its receptor antagonists, i.e. ketotifen (H1-receptor inhibitor), ranitidine (H2-receptor inhibitor), ciproxifan (H3-receptor inhibitor), JNJ7777120 (H4-receptor inhibitor), imetit (H3 receptor agonist), were investigated. The mast cell sonicates or histamine (10-10 - 10-5M) augmented collagen content in myofibroblast cultures; however, histamine-induced elevation was reduced by ciproxifan (10-5M, 10-6M). Imetit (10-9 - 10-5M) elevated collagen content in the culture. H3 receptor expression on myofibroblasts was confirmed. Our findings indicate that histamine increases the deposition of collagen in cultures of myofibroblasts isolated from the myocardial infarction scar. This effect is dependent on H3 receptor activation.


Assuntos
Cicatriz/metabolismo , Colágeno/metabolismo , Histamina/metabolismo , Miofibroblastos/metabolismo , Receptores Histamínicos/metabolismo , Animais , Células Cultivadas , Coração/efeitos dos fármacos , Imidazóis/farmacologia , Masculino , Mastócitos/efeitos dos fármacos , Mastócitos/metabolismo , Infarto do Miocárdio/tratamento farmacológico , Infarto do Miocárdio/metabolismo , Ratos , Ratos Wistar , Tioureia/análogos & derivados , Tioureia/farmacologia
9.
Expert Opin Drug Saf ; 17(2): 125-137, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29258401

RESUMO

BACKGROUND: Studies evaluating the impact of age and potentially inappropriate medication (PIM) on avoidable adverse drug reactions (ADRs) are scarce. METHODS: In this prospective, multi-center, long-term (8.5 years) observational study, we analysed ADRs leading to hospitalization in departments of internal medicine. ADRs causality and preventability were assessed using standardised algorithms. PIM was defined based on the PRISCUS-list. Multivariate analyses and estimation of ADR incidence rates were conducted. RESULTS: Of all 6,427 ADR patients, a preventable ADR was present in 1,253 (19.5%) patients (elderly patients ≥70 years: 828). Risk factors for preventable ADRs in elderly patients were multimorbidity, two to four ADR-causative drugs, and intake of particular compounds (e.g. spironolactone) but not sex, PIM usage, or the total number of drugs. Regarding particular compounds associated with preventable ADRs, highest incidence rates for preventable ADRs were found for patients aged ≥70 years for spironolactone (3.3 per 1,000 exposed persons (95% CI: 1.4-6.6)) and intermediate-acting insulin (3.3 per 1,000 exposed persons (95% CI: 1.6-6.1)). CONCLUSION: Avoiding PIM usage seems to be of limited value in increasing safety in elderly patients whereas our results underline the importance of an individualized medication review of the most commonly implicated drugs in preventable ADRs (supported by BfArM FoNr: V-11337/68605/2008-2010).


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia , Hospitalização/estatística & dados numéricos , Prescrição Inadequada/estatística & dados numéricos , Lista de Medicamentos Potencialmente Inapropriados , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Algoritmos , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/prevenção & controle , Feminino , Humanos , Incidência , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Estudos Prospectivos , Fatores de Risco
10.
Int J Lab Hematol ; 39 Suppl 1: 128-135, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28447421

RESUMO

Clinical decision support (CDS) is the use of information and communication technologies to improve clinical decision making and patient care. CDS applications have been used in many aspects of health care, including medication ordering and diagnostic prediction algorithms. As economic and regulatory pressures place a strain on laboratory resources, the potential of CDS to improve utilization of laboratory testing has also begun to be realized. Hematology and coagulation laboratories stand to gain tremendously from the implementation of CDS interventions, given their mixture of high-volume, low-cost tests (eg CBC, PT, aPTT) and tests that carry a high potential of being misused or misinterpreted (eg lupus anticoagulant, erythrocyte sedimentation rate, heparin-induced thrombocytopenia testing). This brief review will define the key terms in the field of clinical decision support, provide instructive examples of CDS interventions to improve utilization of hematology and coagulation testing, introduce methods to implement these interventions effectively, and discuss metrics by which the success of these interventions can be evaluated.


Assuntos
Tomada de Decisões , Doenças Hematológicas , Testes Hematológicos , Laboratórios Hospitalares , Custos e Análise de Custo , Doenças Hematológicas/sangue , Doenças Hematológicas/diagnóstico , Doenças Hematológicas/economia , Testes Hematológicos/economia , Testes Hematológicos/métodos , Testes Hematológicos/normas , Humanos , Laboratórios Hospitalares/economia , Laboratórios Hospitalares/normas
11.
Int J Clin Pharmacol Ther ; 43(3): 140-9, 2005 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-15792398

RESUMO

OBJECTIVE: This paper describes four studies investigating the dissolution, plasma pharmacokinetics and safety of a novel, fast-acting ibuprofen formulation, ibuprofen sodium dihydrate. MATERIAL AND METHOD: Four separate studies investigated: the in vitro dissolution rates of ibuprofen sodium dihydrate (at pH 1.2, 3.5 and 7.2); the bioavailability of ibuprofen sodium dihydrate (in two pharmacokinetic studies; combined n = 38) compared with conventional ibuprofen, ibuprofen lysinate, ibuprofen arginate and ibuprofen liquagels (all 2 x 200 mg ibuprofen); and the gastroduodenal tolerance of ibuprofen sodium dihydrate and ibuprofen arginate (both 2 x 200 mg ibuprofen t.i.d.) in an endoscopy safety study, where endoscopy was performed at baseline and at the end of each treatment period using a five-point scale to assess the integrity of the gastric and duodenal mucosa. RESULTS: Ibuprofen sodium dihydrate dissolved significantly more rapidly at pH 1.2, 3.5 and 7.2 than conventional ibuprofen, ibuprofen lysinate and ibuprofen liquagels. Ibuprofen sodium dihydrate had similar C(max) to ibuprofen lysinate and ibuprofen liquagels and significantly higher Cmax than conventional ibuprofen (p = 0.002). The mean plasma concentration for ibuprofen sodium dihydrate was significantly higher than for conventional ibuprofen (p = 0.028) 10 minutes post-dose and the t(max) for ibuprofen sodium dihydrate was reached significantly earlier than for conventional ibuprofen (p = 0.018). All three formulations were bioequivalent according to the acceptable boundaries (90% confidence intervals). No statistically significant difference was observed between the ibuprofen formulations in terms of adverse events and specifically with respect to hemorrhagic scores; 41 (46.0%) adverse events (AEs) occurred after administration of ibuprofen sodium dihydrate, and 46 (52.9%) after ibuprofen arginate. One occurrence of an invasive ulcer was observed after administration of ibuprofen arginate. CONCLUSIONS: The new formulation of ibuprofen sodium dihydrate dissolves quickly in vitro, has the same extent of absorption as other fast-acting ibuprofen formulations, and is absorbed into plasma more rapidly than conventional ibuprofen. In addition, the present studies suggest that the tolerability and safety profile of ibuprofen sodium dihydrate is comparable to existing ibuprofen formulations.


Assuntos
Anti-Inflamatórios não Esteroides/farmacocinética , Trato Gastrointestinal/metabolismo , Ibuprofeno/farmacocinética , Adulto , Anti-Inflamatórios não Esteroides/efeitos adversos , Anti-Inflamatórios não Esteroides/uso terapêutico , Área Sob a Curva , Química Farmacêutica , Feminino , Meia-Vida , Humanos , Ibuprofeno/efeitos adversos , Ibuprofeno/uso terapêutico , Absorção Intestinal , Masculino , Pessoa de Meia-Idade
12.
Neurosurgery ; 27(5): 760-3; discussion 763, 1990 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-2259406

RESUMO

Slit ventricle syndrome is characterized by chronic or recurring headaches associated with subnormal ventricular volume in patients who have undergone shunt treatment for hydrocephalus. There appear to be at least three pathophysiological mechanisms that cause this syndrome: 1) intermittent shunt malfunction; 2) intracranial hypotension; and 3) paroxysms of increased intracranial pressure in the presence of normal shunt function. To treat seven patients with slit ventricle syndrome caused by paroxysms of elevated intracranial pressure, we successfully used antimigraine therapy rather than standard calvarial expansion procedures. None of these patients has required shunt revision or calvarial expansion during a mean follow-up period of 2 years. The symptoms of slit ventricle syndrome may be a form of "acquired" migraine in shunt patients. We suggest that, in clinically stable patients with normal shunt function, treatment against migraine may stabilize symptoms resulting from paroxysms of increased intracranial pressure. Such treatment may prevent unnecessary shunt revisions and/or calvarial expansion procedures.


Assuntos
Ventrículos Cerebrais , Derivações do Líquido Cefalorraquidiano/efeitos adversos , Transtornos de Enxaqueca/tratamento farmacológico , Pseudotumor Cerebral/tratamento farmacológico , Adulto , Ventrículos Cerebrais/patologia , Ventriculografia Cerebral , Pré-Escolar , Ciproeptadina/uso terapêutico , Feminino , Humanos , Hidrocefalia/cirurgia , Lactente , Masculino , Transtornos de Enxaqueca/etiologia , Propranolol/uso terapêutico , Pseudotumor Cerebral/etiologia , Síndrome , Tomografia Computadorizada por Raios X
13.
Spine (Phila Pa 1976) ; 20(13): 1480-8, 1995 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-8623067

RESUMO

STUDY DESIGN: This study determined the relative efficacy of somatosensory-evoked potentials and motor-evoked potentials in monitoring spinal cord function during surgery for patients with idiopathic versus neuromuscular scoliosis. OBJECTIVES: To determine whether patients with idiopathic versus neuromuscular scoliosis demonstrate significantly different somatosensory-evoked potentials and motor-evoked potentials recorded during surgery. SUMMARY OF BACKGROUND DATA: Ashkenaze et al (1993) and others have reported that cortical somatosensory-evoked potentials are unreliable when used to monitor spinal cord function in patients with neuromuscular scoliosis. It was recommended that other neurophysiologic tests be used. METHODS: Somatosensory-evoked potentials and motor-evoked potentials were recorded from two groups of patients: those with idiopathic scoliosis and those with neuromuscular scoliosis. Somatosensory-evoked potentials were obtained before and during surgery. Motor-evoked potentials were obtained during surgery. Normal variability, as indicated from idiopathic scoliotic results, was compared with data obtained from patients with neuromuscular scoliosis. Motor-evoked potentials and somatosensory-evoked potentials were obtained sequentially during the duration of surgery. RESULTS: Single-channel cortical somatosensory-evoked potentials demonstrated a 27% positive rate, which was consistent with results (28%) from Ashkenaze et al. The use of multiple recording sites for the somatosensory-evoked potentials and the addition of motor-evoked potential procedures indicated that a reliable response could be obtained in more than 96% of the patients. It also was found that cortical somatosensory-evoked potentials were more affected by anesthetic agents when recorded from patients with neuromuscular scoliosis compared with patients with idiopathic scoliosis. CONCLUSIONS: Single-channel cortical somatosensory-evoked potentials demonstrated a high level of unreliability, which reduced their clinical effectiveness. However, by using multiple recording sites with the somatosensory-evoked potentials and by administering motor-evoked potential procedures, it was possible to monitor spinal cord function in neuromuscular patients and avoid postoperative neurologic deficits.


Assuntos
Monitorização Intraoperatória/métodos , Doenças Neuromusculares/complicações , Escoliose/cirurgia , Medula Espinal/cirurgia , Adolescente , Adulto , Anestésicos/administração & dosagem , Potencial Evocado Motor/efeitos dos fármacos , Potenciais Somatossensoriais Evocados/efeitos dos fármacos , Humanos , Doenças Neuromusculares/cirurgia , Reprodutibilidade dos Testes , Estudos Retrospectivos , Escoliose/etiologia , Escoliose/fisiopatologia , Medula Espinal/fisiopatologia
14.
Spine (Phila Pa 1976) ; 19(15): 1704-10, 1994 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-7973964

RESUMO

STUDY DESIGN: This study investigated the use of mechanically elicited electromyograms during the placement of pedicle screws in 89 patients undergoing surgery for spinal stenosis. SUMMARY OF BACKGROUND DATA: Several methods for monitoring nerve roots are available. However, mechanically elicited electromyograms may be more sensitive to mechanical irritation of nerve roots by pedicle screws than by other methods. METHODS: Mechanically elicited electromyograms were recorded in muscle groups innervated by cervical or lumbar nerve roots. Confirmation of surgical activity with the level of the electromyogram was correlated. RESULTS: Results indicated that mechanically elicited electromyograms are extremely sensitive to nerve root irritation. Compared to other methods, electromyograms are a viable alternative. CONCLUSIONS: Results from this study indicated that mechanically elicited electromyograms are sensitive and specific to nerve root firings and should be considered for use during the dynamic phases of surgery.


Assuntos
Parafusos Ósseos , Eletromiografia/métodos , Potenciais Somatossensoriais Evocados , Complicações Intraoperatórias/prevenção & controle , Monitorização Intraoperatória/métodos , Raízes Nervosas Espinhais/lesões , Estenose Espinal/cirurgia , Humanos , Músculo Esquelético/inervação , Sensibilidade e Especificidade
15.
Am Surg ; 67(2): 155-8, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11243540

RESUMO

This study attempts to determine by independent review the results of laparoscopic transabdominal preperitoneal (TAPP) inguinal hernia repair for hernias with increased risk for recurrence. Indicators used for increased recurrence risk were recurrent hernias or simultaneously repaired bilateral inguinal hernias. Office and hospital records of all such patients who had undergone TAPP repair were reviewed from one surgeon's 242-patient laparoscopic inguinal hernia database from 1992 to 1998. All were called for assessment by an independent surgeon at least 4 months postoperatively (median 34 months). Those unable to come in person were interviewed by telephone. There were 121 hernias: 34 recurrent and 100 bilateral (13 overlap). Recurrence rate was 3 per cent, which was similar for repair of bilateral and recurrent hernias. All recurrences occurred within 3 months of surgery. No unknown recurrence was detected by the independent observer. Laparoscopic TAPP inguinal hernia repair, often claimed as the method of choice for bilateral and recurrent hernia repair, is indeed a safe and effective procedure with a low early recurrent rate in these higher-risk situations.


Assuntos
Hérnia Inguinal/cirurgia , Laparoscopia , Bases de Dados Factuais/estatística & dados numéricos , Feminino , Seguimentos , Hérnia Inguinal/epidemiologia , Humanos , Laparoscopia/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Recidiva , Medição de Risco , Fatores de Tempo
16.
Int J Clin Pharmacol Ther ; 38(5): 235-44, 2000 May.
Artigo em Inglês | MEDLINE | ID: mdl-10839467

RESUMO

BACKGROUND AND OBJECTIVES: The activity of the human cytochrome P450 CYP1A2 is decreased by female sex hormones during pregnancy or treatment with oral contraceptives. However, the influence of menstrual cycle on CYP 1A2 activity is not clear. METHODS: CYP1A2 activity was monitored in 15 women (13 with confirmed ovulatory cycles, 2 smokers, age (mean +/- SD) 27.8 +/- 3.8 years, body mass index 23.8 +/- 3.8 kg x m-2) using the specific substrate caffeine (mean doses 149 mg). After a run-in period started one week prior to expected onset of menses, daily saliva samples were taken 7.3 +/- 0.7 hours after caffeine intake throughout the cycle, and caffeine clearance was estimated from the paraxanthine to caffeine ratio therein. Ovulation was confirmed by progesterone serum concentration above 3 ng/ml in the second half of the cycle. RESULTS: Initial (day 2) caffeine clearance (n = 15, geometric mean) was 1.37 ml/min/kg body weight (coefficient of variation (CV) 48%). The ratio of caffeine clearance for the luteal (day -9 to -4 prior to onset of the next menses) to the follicular phase (days 5-10) was (n = 13, point estimate) 1.03 (90% CI 0.95-1.12), indicating that there was no difference in CYP1A2 activity between these cycle phases. The median intraindividual CV in ovulatory cycles (n = 13) was 23% (range 11% to 39%). As an additional finding, there was evidence for long-term fluctuations of CYP1A2 activity in most individuals. CONCLUSIONS: A dose adaptation according to the phase of menstrual cycle based on pharmacokinetics is not required for CYP1A2 substrates.


Assuntos
Cafeína/farmacocinética , Estimulantes do Sistema Nervoso Central/farmacocinética , Citocromo P-450 CYP1A2/metabolismo , Ciclo Menstrual/metabolismo , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Saliva/metabolismo , Teofilina/metabolismo
17.
Angiology ; 33(3): 173-82, 1982 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-7065462

RESUMO

Many difficulties are encountered by clinicians in attempting to diagnose pheochromocytomas. We describe several patients with unusual clinical features. These include sudden death, cerebral hemorrhage, refractory congestive heart failure, acute abdominal pain, and hypercalcemia. In 2 patients, the rare association of this tumor and pregnancy was observed. Two subjects had sudden death, 1 during a pneumoencephalogram and another during an epidural block. The clinicians should be aware of these manifestations of pheochromocytomas.


Assuntos
Neoplasias das Glândulas Suprarrenais/diagnóstico , Feocromocitoma/diagnóstico , Neoplasias das Glândulas Suprarrenais/complicações , Neoplasias das Glândulas Suprarrenais/epidemiologia , Adulto , Idoso , Anestesia Epidural/efeitos adversos , Transtornos Cerebrovasculares/complicações , Feminino , Humanos , Hipertensão/complicações , Masculino , México , Pessoa de Meia-Idade , Feocromocitoma/complicações , Feocromocitoma/epidemiologia , Gravidez , Complicações na Gravidez/diagnóstico , Estudos Retrospectivos
18.
J Behav Ther Exp Psychiatry ; 26(1): 31-4, 1995 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-7642758

RESUMO

The Fear of Spiders Questionnaire (FSQ), an 18-item self-report questionnaire assessing spider phobia, was developed in an attempt to complement the information provided by the Spider Phobia Questionnaire (SPQ). Data obtained from 338 undergraduates revealed that the FSQ was able to discriminate phobics from nonphobics, and indicated decrements in phobic responding from pretest to posttest following cognitive therapy. Test-retest data, obtained from non-treatment control groups, indicated that scores on the FSQ are stable over a one month period. The FSQ also demonstrated adequate convergent validity due to its significant correlations with the SPQ and a behavioral avoidance test. Finally, a factor analysis revealed two factors accounting for 55% of the variance. It is argued that, compared to the SPQ, items on the FSQ are more explicit regarding the time period to be assessed, and may be more sensitive to differences between phobics and nonphobics and decrements in phobic responding following treatment.


Assuntos
Medo , Inventário de Personalidade/estatística & dados numéricos , Transtornos Fóbicos/diagnóstico , Aranhas , Adolescente , Adulto , Animais , Nível de Alerta , Terapia Cognitivo-Comportamental , Feminino , Humanos , Masculino , Transtornos Fóbicos/psicologia , Transtornos Fóbicos/terapia , Psicometria , Reprodutibilidade dos Testes
19.
Ginekol Pol ; 64(8): 404-6, 1993 Aug.
Artigo em Polonês | MEDLINE | ID: mdl-8375723

RESUMO

At the paper the problems of girls hospitalized at the Gynaecological and Obstetrician ward of the hospital situated on the border of city agglomeration were described. The data regards as pregnancy, delivery and puerperium and they were collected in last two years.


PIP: In the gynecological-obstetrical municipal hospital of Pruszkowie, there were a total of 38 pregnant women admitted under the age of 17 from January, 1990, to June, 1992, for abortion, pregnancy complications, and delivery. The deliveries to those under 17 represented 1.2% of the total of 2693 births during 1990-92. The youngest was 15 years old. 60% were students, and the rest did not work or study. 63% were not married. 74% were supported by their parents. 32 patients were admitted for delivery, 4 for abortion, and 2 for pregnancy complications. 28 had their first pregnancy, 2 had induced abortion, and 2 were multiparous. The following pregnancy complications appeared: in 13.17%, anemia (treated with drugs and in one case with blood transfusions; in 10.5%, infection of urinary tract; in 3%, gestosis in the preliminary stage; in 3%, insufficiency of the cervical canal; in 16%, premature birth (60% of which was caused by the premature rupture of amniotic fluid, with 40% having contractions that could not be halted by tocolytic drugs). Two patients were hospitalized in the pathology department on account of threatening premature birth and anemia. They were treated and released home with recommended further out-patient care. In 88% of women giving birth at term genuine contractions appeared, and in the rest of the cases birth was induced by oxytocin infusion. The average duration of birth was 5 hours and 48 minutes. The longest labor lasted 10 hours and 40 minutes, the shortest one 3 hours and 5 minutes. In 9.3% of deliveries, cesarean section was performed because of threat of miscarriage in one case and the position of the pelvis in two cases. During puerperium in 15.6% of patients, slow inversion of the uterus was observed, which necessitated the administration of spasmolytic drugs. In one case there was an inflammation of the uterine muscle. The 80% rate of premature births among those not having received prenatal care had to do with their low socioeconomic status in an urban environment and consequent inferior public health care.


Assuntos
Parto Obstétrico , Período Pós-Parto , Gravidez na Adolescência , Adolescente , Feminino , Hospitalização , Humanos , Polônia , Gravidez , Saúde da População Urbana
20.
Ginekol Pol ; 64(11): 541-4, 1993 Nov.
Artigo em Polonês | MEDLINE | ID: mdl-8112624

RESUMO

The paper presents diagnostic methods employed at the Gynaecological Ward of the City Hospital in Pruszków and the results of HSG and laparoscopy examination, with special attention being drawn to the usefulness of these methods in finding out the causes of infertility. 51 patients with primary and second infertility were examined. HSG and laparoscopy make it possible to diagnose correctly the cause of infertility. They also enable adequate and early classification of patients for further diagnosis and treatment at highly specialized centres dealing with the problems of infertility.


Assuntos
Infertilidade Feminina/etiologia , Feminino , Humanos , Histerossalpingografia , Laparoscopia
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