Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 46
Filter
1.
Ultrasound Obstet Gynecol ; 48(6): 695-700, 2016 Dec.
Article in English | MEDLINE | ID: mdl-27300158

ABSTRACT

OBJECTIVE: To evaluate whether routine vaginal examination during labor is associated with increased levels of anxiety and pain compared with transperineal ultrasound assessment. METHODS: This was a single-blinded, parallel, randomized controlled trial conducted in a tertiary care facility. Parous pregnant women without a known psychiatric condition who were seen at the care facility between November 2015 and March 2016 were included in the trial. Participants had an uneventful pregnancy and were assigned randomly to routine digital vaginal examination or transperineal ultrasound assessment during labor. Psychological distress levels, measured by the Symptom Checklist-90-Revised, and anxiety levels, measured by State-Trait Anxiety Inventory (STAI), were recorded before admission, and pain, measured using a visual analog scale, and anxiety were recorded during the latent phase of labor, the beginning of active labor and the postpartum period. A sample size of 45 women per group (n = 90) was planned to compare methods of assessment. RESULTS: Ninety women were randomized (1:1 allocation) to one or other of the interventions. Preadmission psychological distress and anxiety levels were similar between the two groups (P = 0.93 and 0.65, respectively). Most of the studied characteristics were similar in each group including duration of labor, number of examinations, analgesic administration during labor, episiotomy rate and interval between deliveries. Visual analog scale scores revealed that pain perception was reduced during latent (mean difference, -1.5 (95% CI, -2.51 to -0.57); P < 0.01) and active (mean difference, -1.2 (95% CI, -2.45 to -0.09); P = 0.03) stages of labor and during the postpartum period (mean difference, -0.5 (95% CI, -1.02 to -0.06); P = 0.02) in participants who had a transperineal ultrasound assessment compared with participants who had a digital vaginal examination. STAI scores revealed that anxiety levels were similar between the two groups during the latent and active phases of labor and during the postpartum period (P = 0.07, P = 0.38 and P = 0.13, respectively). CONCLUSIONS: The perception of pain was significantly reduced with the use of a transperineal ultrasound assessment compared with routine digital vaginal examination. However, only during the latent stage of labor was the magnitude of the observed effect sufficiently great to be considered clinically significant. Our results indicate that transperineal ultrasound assessment could be preferred to digital examination for the evaluation of progression of labor during this phase. Digital examination has no clinically relevant effects on state anxiety levels, as measured by the STAI. Copyright © 2016 ISUOG. Published by John Wiley & Sons Ltd.


Subject(s)
Anxiety/etiology , Gynecological Examination/psychology , Pain/etiology , Ultrasonography/psychology , Adult , Delivery, Obstetric , Female , Gynecological Examination/methods , Humans , Labor Presentation , Pain Measurement , Pregnancy , Ultrasonography/methods
2.
J Hosp Infect ; 80(2): 144-9, 2012 Feb.
Article in English | MEDLINE | ID: mdl-22154781

ABSTRACT

BACKGROUND: Adenovirus keratoconjunctivitis outbreaks have rarely been reported in preterm infants. An outbreak of adenovirus conjunctivitis occurred between 15 January and 25 February at a neonatal intensive care unit of a university hospital in Turkey. AIM: To describe the evolution, investigation and management of the outbreak. METHODS: Adenovirus type 8 was identified in 14 samples by polymerase chain reaction analysis. A case-control study was performed to determine the risk factors. FINDINGS: Fifteen preterm neonates, five healthcare workers (HCWs) and four parents suffered from conjunctivitis signs such as lacrimation, swelling and redness of the eye. A retinopathy of prematurity (ROP) examination was found to be the most important risk factor for adenovirus conjunctivitis (odds ratio: 17.5; 95% confidence interval: 1.9-163.0; P=0.012). The eyelid speculum (blepharostat) used during the ROP examination was not sterilized between each patient and was found to be the cause of contamination. CONCLUSION: The outbreak was controlled by measures such as barrier precautions, hand hygiene, sterilization of the blepharostat, suspending patient transfer to other units, and excluding infected HCWs for at least 15 days.


Subject(s)
Adenovirus Infections, Human/epidemiology , Adenoviruses, Human/classification , Adenoviruses, Human/isolation & purification , Conjunctivitis/epidemiology , Cross Infection/epidemiology , Disease Outbreaks , Adenovirus Infections, Human/virology , Case-Control Studies , Conjunctivitis/virology , Cross Infection/virology , DNA, Viral/genetics , Female , Hospitals, University , Humans , Infant, Newborn , Infection Control/methods , Intensive Care Units, Neonatal , Male , Polymerase Chain Reaction , Risk Factors , Serotyping , Turkey
3.
Clin Nephrol ; 74(3): 182-9, 2010 Sep.
Article in English | MEDLINE | ID: mdl-20860902

ABSTRACT

AIMS: The recommendations for screening for primary aldosteronism (PA) are determination and interpretation of both plasma aldosterone and the aldosterone-renin ratio (ARR). Although it is known that oral sodium chloride intake has an important impact on plasma aldosterone and ARR, more detailed data of this impact are sparse. We evaluated the relevance of natriuresis as a parameter of oral sodium intake, as well as patient age and antihypertensive medication on the PA screening parameters in our hypertensive patient population. METHOD: Our cross-sectional, single-center study investigated the impact of natriuresis, patient age, body mass index, Ca-antagonists, beta-blockers, ACE inhibitors and/or AT1 blockers on aldosterone and ARR in 777 hypertensive patients (393 men, 384 women) with a mean age (± SD) of 49.5 ± 15.7 years and an endogenous creatinine clearance of at least 80 ml/min. A total of 401 patients (51.6%) were on antihypertensive therapy. The mean natriuresis of the total population was 206.7 ± 97.0 mmol/day. The potential impact factors on plasma aldosterone and ARR were analyzed in two separate univariate, bivariate, and multiple regression analyses, respectively, with natriuresis as the main impact factor. RESULTS: Natriuresis as well as patient age had a significant impact on both plasma aldosterone and ARR. In addition, beta-blockers, ACE inhibitors and/or AT1 blockers had a significant impact on ARR (p < 0.05). CONCLUSIONS: In addition to antihypertensive medication, natriuresis as well as patient age seem to need further consideration in the process of PA screening and interpretation of its results. Additional experimental studies are warranted to confirm and generalize our results.


Subject(s)
Aldosterone/blood , Hyperaldosteronism/blood , Renin-Angiotensin System/drug effects , Renin/blood , Sodium, Dietary/administration & dosage , Age Factors , Antihypertensive Agents/therapeutic use , Cross-Sectional Studies , Female , Humans , Hypertension/blood , Hypertension/drug therapy , Male , Middle Aged , Regression Analysis
4.
Br J Pharmacol ; 160(6): 1408-16, 2010 Jul.
Article in English | MEDLINE | ID: mdl-20590631

ABSTRACT

BACKGROUND AND PURPOSE: The formation of reactive oxygen species (ROS) is increased in heart failure (HF). However, the causal and mechanistic relationship of ROS formation with contractile dysfunction is not clear in detail. Therefore, ROS formation, myofibrillar protein oxidation and p38 MAP kinase activation were related to contractile function in failing rabbit hearts. EXPERIMENTAL APPROACH AND KEY RESULTS: Three weeks of rapid left ventricular (LV) pacing reduced LV shortening fraction (SF, echocardiography) from 32 +/- 1% to 13 +/- 1%. ROS formation, as assessed by dihydroethidine staining, increased by 36 +/- 8% and was associated with increased tropomyosin oxidation, as reflected by dimer formation (dimer to monomer ratio increased 2.28 +/- 0.66-fold in HF vs. sham, P < 0.05). Apoptosis (TdT-mediated dUTP nick end labelling staining) increased more than 12-fold after 3 weeks of pacing when a significant increase in the phosphorylation of p38 MAP kinase and HSP27 was detected (Western blotting). Vitamins C and E abolished the increases in ROS formation and tropomyosin oxidation along with an improvement of LVSF (19 +/- 1%, P < 0.05 vs. untreated HF) and prevention of apoptosis, but without modifying p38 MAP kinase activation. Inhibition of p38 MAP kinase by SB281832 counteracted ROS formation, tropomyosin oxidation and contractile failure, without affecting apoptosis. CONCLUSIONS AND IMPLICATIONS: Thus, p38 MAP kinase activation appears to be upstream rather than downstream of ROS, which impacts on LV function through myofibrillar oxidation. p38 MAP kinase inhibition is a potential target to prevent or treat HF.


Subject(s)
Heart Failure/physiopathology , Reactive Oxygen Species/metabolism , p38 Mitogen-Activated Protein Kinases/metabolism , Actin Cytoskeleton/metabolism , Animals , Antioxidants/pharmacology , Apoptosis , Ascorbic Acid/pharmacology , Disease Models, Animal , Disease Progression , Drug Delivery Systems , Heart Failure/drug therapy , Imidazoles/pharmacology , Male , Myocardial Contraction , Oxidation-Reduction/drug effects , Phosphorylation , Pyrimidines/pharmacology , Rabbits , Ventricular Function, Left , Vitamin E/pharmacology , p38 Mitogen-Activated Protein Kinases/antagonists & inhibitors
5.
Clin Nephrol ; 73(1): 21-9, 2010 Jan.
Article in English | MEDLINE | ID: mdl-20040348

ABSTRACT

AIMS: The B-type natriuretic peptide (BNP) has become increasingly important as a diagnostic and prognostic method for cardiovascular disease or death. To our knowledge no prospective studies exist to evaluate the value of baseline BNP and baseline heart failure as predictors of overall death in incident rather than prevalent hemodialysis patients with end-stage renal disease (ESRD). METHODS: 255 ESRD patients were included in our observational study with a median observation period of 1.11 years. A Kaplan-Meier survival curve was stratified by BNP concentration (< 340 pg/ml and > or = 340 pg/ml) to estimate the impact on the overall mortality rate. Univariate and multiple Cox regression models were fitted for a variety of covariables including severe heart failure (graded according to the New York Heart Association) to evaluate the independent predictors of death. Association between BNP and four explanatory variables was described in a multiple linear regression model. RESULTS: Survival analysis demonstrated a significantly higher mortality rate in patients with higher BNP values at baseline. The independent predictive value of high BNP concentration at baseline could be statistically confirmed by multiple Cox regression analysis. However, when including the covariates hemoglobin and severe heart failure, significantly associated with BNP, in the same model, severe heart failure rather than BNP becomes a significant predictor of overall death. CONCLUSIONS: A higher BNP level at baseline may be confirmed as an independent predictor of death in the incident dialysis population. However, severe heart failure may affect the impact of BNP on the overall survival rate and thus be a stronger predictor of death than BNP.


Subject(s)
Heart Failure/mortality , Kidney Failure, Chronic/mortality , Natriuretic Peptide, Brain/blood , Renal Dialysis/mortality , Aged , Aged, 80 and over , Echocardiography , Female , Heart Failure/blood , Humans , Immunoassay , Kaplan-Meier Estimate , Kidney Failure, Chronic/blood , Kidney Failure, Chronic/therapy , Male , Middle Aged , Patient Selection , Proportional Hazards Models , Prospective Studies , Stroke Volume/physiology
6.
Eur J Gynaecol Oncol ; 29(5): 551-3, 2008.
Article in English | MEDLINE | ID: mdl-19051835

ABSTRACT

A case with three synchronous tumors is presented. A 52-year-old patient underwent a total abdominal hysterectomy with bilateral salpingo-oophorectomy, bilateral pelvic and paraaortic lymph node dissection, and partial omentectomy for endometrial carcinoma accompanied by an adnexal mass. She further underwent cholecystectomy for a perioperative incidental suspicious nodule on the serosal surface of the gallbladder. Histopathology revealed a uterine endometrioid adenocarcinoma, a mucinous adenocarcinoma of the gallbladder, and an ovarian endometrioid carcinoma with a clear cell component. The progress of the patient until the time of death is discussed.


Subject(s)
Adenocarcinoma, Mucinous/pathology , Carcinoma, Endometrioid/pathology , Endometrial Neoplasms/pathology , Gallbladder Neoplasms/pathology , Neoplasms, Multiple Primary/pathology , Ovarian Neoplasms/pathology , Female , Humans , Middle Aged
7.
Australas Radiol ; 51 Spec No.: B3-5, 2007 Oct.
Article in English | MEDLINE | ID: mdl-17875150

ABSTRACT

Intraventricular meningiomas have often been reported; however, literature reveals very few cases localized within foramen of Monro. Herein we report a 57-year-old woman admitted with obstructive hydrocephalus-related symptoms. Strikingly, the lesion was completely calcified in CT and had no marked solid component on MRI. The lesion was completely removed by surgical resection with a transfrontal intraventricular approach. The resected mass was histopathologically diagnosed as meningioma. The patient's symptoms resolved immediately after the operation.


Subject(s)
Cerebral Ventricle Neoplasms/diagnosis , Magnetic Resonance Imaging , Meningeal Neoplasms/diagnosis , Meningioma/diagnosis , Tomography, X-Ray Computed , Humans , Male , Middle Aged
8.
Br J Radiol ; 80(954): e109-12, 2007 Jun.
Article in English | MEDLINE | ID: mdl-17684068

ABSTRACT

Chloroma (myeloid or granulocytic sarcoma) is a rare type of tumour comprising immature granulocytic cells. It generally accompanies acute myeloid leukaemia and, rarely, other myeloproliferative disorders. When presenting as dural-based mass lesions, radiological differential diagnosis includes meningioma, metastasis and lymphoma. There is a limited number of descriptions of chloromas mimicking dural-based masses in the literature. We present preliminary diffusion-weighted MR, perfusion-weighted MR and MR spectroscopy findings of an intracranial myeloid sarcoma.


Subject(s)
Brain Neoplasms/pathology , Leukemia, Myeloid/pathology , Acute Disease , Brain/pathology , Humans , Magnetic Resonance Imaging/methods , Magnetic Resonance Spectroscopy , Male , Middle Aged
9.
Bone Marrow Transplant ; 40(8): 765-72, 2007 Oct.
Article in English | MEDLINE | ID: mdl-17700598

ABSTRACT

Myeloablative conditioning regimens commonly lead to prolonged anorexia and poor oral intake. In a prospective study of 147 patients receiving CY, total body irradiation and allogeneic hematopoietic cells, we determined the extent of decline in oral intake and assessed plasma cytokine levels and development of acute GVHD as explanations for protracted anorexia. For each patient, daily oral caloric intake was expressed as a percent of estimated basal requirements, calculated as basal energy expenditure, through day 20. Oral caloric intake was significantly reduced in 92% of patients and remained low. The nadir in oral intake occurred at days 10-12, when median oral caloric intake was 3% of basal energy requirements. Plasma cytokines known to affect appetite (IL2, IL6, tumor necrosis factor-alpha) were significantly elevated above normal following conditioning therapy (P<0.001 for each cytokine). Acute GVHD did not appear to affect oral intake to transplant day 20 in this cohort of patients; however, plasma levels of IL6 rose steeply before the clinical onset of GVHD. Persistent fever occurred with the greatest frequency in patients with most profound reduction in oral intake. We conclude that prolonged alterations in oral intake following this myeloablative regimen may be related to circulating cytokines known to alter eating behavior.


Subject(s)
Anorexia/etiology , Cytokines/blood , Hematopoietic Stem Cell Transplantation/adverse effects , Adolescent , Adult , Child , Child, Preschool , Cyclophosphamide/adverse effects , Energy Intake , Female , Graft vs Host Disease/etiology , Humans , Male , Middle Aged , Prospective Studies , Retrospective Studies , Transplantation Conditioning/adverse effects , Whole-Body Irradiation/adverse effects
11.
Transplant Proc ; 37(10): 4323-5, 2005 Dec.
Article in English | MEDLINE | ID: mdl-16387110

ABSTRACT

Bardet-Biedl syndrome (BBS) is a rare autosomal recessive disorder. End-stage renal failure has been reported as the most frequent cause of death in this disorder. There are few reports of kidney transplantation in these patients. Renal transplant patients are known to be at increased risk for the development of malignancies. Although a few patients with BBS have been described to develop malignant disease, there was no previous association with lymphoma. We report a 20-year-old patient in whom primary central nervous system lymphoma was diagnosed 20 months after renal transplantation.


Subject(s)
Bardet-Biedl Syndrome/complications , Central Nervous System Neoplasms/diagnosis , Kidney Transplantation , Lymphoma/diagnosis , Adult , Antineoplastic Agents/therapeutic use , Central Nervous System Neoplasms/drug therapy , Central Nervous System Neoplasms/pathology , Central Nervous System Neoplasms/radiotherapy , Combined Modality Therapy , Creatinine/blood , Female , Humans , Kidney Failure, Chronic/surgery , Lymphoma/drug therapy , Lymphoma/pathology , Lymphoma/radiotherapy , Methotrexate/therapeutic use , Postoperative Complications/diagnosis
12.
Exp Nephrol ; 9(5): 332-40, 2001.
Article in English | MEDLINE | ID: mdl-11549851

ABSTRACT

BACKGROUND: Hyperkalemia and metabolic acidosis are common manifestations in patients receiving the immunosuppressive agent cyclosporine A (CsA) and the recently introduced FK506. We compared the acute toxic and antiproliferative effects as well as the effects on the transport activity of Na(+)/K(+)-ATPase and Na(+)/K(+)/2Cl(-) cotransporter of CsA and FK506 in an established cell line of distal/collecting tubule origin (MDCK cells). METHODS: MDCK cells were exposed to various concentrations of CsA or FK506 and the effects on cell viability (MTT test and neutral red uptake), plasma membrane integrity (lactate dehydrogenase (LDH) release) and cell proliferation (bromodeoxyuridine (BrdU) incorporation) were compared. For transport studies, after confluence, MDCK cells were exposed to CsA or FK506 for 48 h in the presence and absence of aldosterone. Ouabain- and bumetanide-sensitive (86)Rubidium uptake measurements were used to study the activity of the Na(+)/K(+)-ATPase and Na(+)/K(+)/2Cl(-) cotransporter at the surface of intact cells. RESULTS: After 24 h of exposure CsA reduced the number of viable cells to 50% at 30 microM, whereas for FK506 2-3 times higher concentrations had to be employed. Similarly, LDH release was stimulated tenfold by 30 microM CsA but only fourfold by 70 microM FK506. In contrast, DNA synthesis was affected at lower concentrations of FK506 than of CsA. In cells treated for 24 h BrdU incorporation was significantly inhibited by 3 microM FK506, whereas a similar inhibition required 10 microM CsA. The transport activity of Na(+)/K(+)-ATPase and of Na(+)/K(+)/2Cl(-) cotransporter were significantly decreased (37 and 63%, respectively) on CsA administration (8 microM). In CsA-treated cells the K(+) channel blockers barium (1 mM), TEA (10 mM) and quinine (1 mM) did not further inhibit the transport activities suggesting that CsA might also act via inhibition of K(+) channels. FK506 at 8 microM had no effect on Na(+)/K(+)-ATPase transport activity but stimulated Na(+)/K(+)/2Cl(-) cotransporter activity by 59%. The stimulatory effect was abolished by K(+) channel blockers indicating that recycling of K(+) might increase by FK506. The simultaneous presence of aldosterone (5 microM) protected the cells from the inhibitory effect of CsA on Na(+)/K(+)-ATPase and Na(+)/K(+)/2Cl(-) cotransporter activity. The stimulatory effect of FK506 on the Na(+)/K(+)/2Cl(-)cotransporter activity was completely abolished in the presence of aldosterone. CONCLUSIONS: Both CsA and FK506 showed acute toxicity in MDCK cells in vitro with the effects of FK506 being less pronounced. CsA and FK506 had different effects on the in vivo transport rates of the Na(+)/K(+)-ATPase and the Na(+)/K(+)/2Cl(-) cotransporter; CsA inhibited the activity of the Na(+)/K(+)-ATPase and the Na(+)/K(+)/2Cl(-) cotransporter whereas FK506 stimulated the activity of Na(+)/K(+)/2Cl(-) cotransporter. These effects were abolished by the application of aldosterone.


Subject(s)
Cyclosporine/pharmacology , Potassium/metabolism , Sodium-Potassium-Chloride Symporters/metabolism , Sodium-Potassium-Exchanging ATPase/metabolism , Tacrolimus/pharmacology , Aldosterone/pharmacology , Animals , Cell Division/drug effects , Cell Line , Cell Survival/drug effects , Cyclosporine/toxicity , Dogs , Dose-Response Relationship, Drug , Immunosuppressive Agents/pharmacology , Immunosuppressive Agents/toxicity , Ion Transport/drug effects , Kidney Tubules, Distal/cytology , Potassium Channel Blockers/pharmacology , Rubidium Radioisotopes/metabolism , Tacrolimus/toxicity
13.
JPEN J Parenter Enteral Nutr ; 25(4): 219-28, 2001.
Article in English | MEDLINE | ID: mdl-11434654

ABSTRACT

High-dose cytoreduction and hematopoietic stem cell infusion form the basis for treatment of hematologic cancers, defects or failure of hematopoiesis, and some solid tumors. As an antitumor therapy, allogeneic hematopoietic cell transplantation (HCT) is superior to autologous HCT by induction of a graft-vs-tumor effect. However, recipients of allografts suffer higher transplant-related mortality owing to graft-vs-host disease (GVHD). Nutrition support research must recognize that HCT is a heterogeneous modality whose short and long-term outcomes are affected by transplant type, preparative regimens, diagnosis, disease stage, age, and nutritional status. The field of HCT will diversify further as lower dose cytoreduction and mixed chimerism grafts allow expansion of the technique to older patients and to other diseases.


Subject(s)
Graft vs Host Disease/prevention & control , Hematopoietic Stem Cell Transplantation , Neoplasms/therapy , Parenteral Nutrition, Total , Glutamine/therapeutic use , Graft vs Host Disease/therapy , Graft vs Tumor Effect , Humans , Nutritional Status , Parenteral Nutrition, Total/adverse effects , Transplantation, Homologous , Treatment Outcome
14.
J Am Diet Assoc ; 100(9): 1015-22, 2000 Sep.
Article in English | MEDLINE | ID: mdl-11019348

ABSTRACT

OBJECT: To determine if adult patients who received marrow transplants had faster resumption of oral energy and nutrient intake and shorter duration of intravenous (i.v.) fluid requirement if discharged from the hospital earlier than is customary. DESIGN: Randomized, controlled trial of patients remaining hospitalized because of inadequate oral intake. Consenting patients were assigned randomly to remain hospitalized (hospital group) or be discharged to an ambulatory setting (ambulatory group). SUBJECTS: Seventy-eight patients of the Fred Hutchinson Cancer Research Center who were consuming less than 33% of estimated energy requirement and requiring up to 3,000 mL of fluids per day intravenously. INTERVENTION: Participants received nutrition counseling by a registered dietitian to promote resumption of oral intake. Daily oral intake records were analyzed to determine energy and nutrient content. MAIN OUTCOME MEASURES: Days after study enrollment to consume 33% of energy and protein requirements and total number of days of i.v. fluid support were analyzed by group until discharge from the center, approximately 100 days after transplantation. STATISTICAL ANALYSES: Demographic data were defined by group means. Differences between treatment procedures were determined by Cox regression analysis. No variables were confounding. RESULTS: The hospital group took fewer days than the ambulatory group to resume oral energy intake (4.5 vs 8.0, P = .004) and to discontinue i.v. fluids (30.5 vs 48.5, P = .019). There was no difference between groups in days of parenteral nutrition support (P = .817) or days to resume oral protein intake (P = .470). APPLICATIONS/CONCLUSIONS: Oral and gastrointestinal complications delay resumption of oral energy and protein intakes after transplantation. Earlier hospital discharge can achieve cost savings but may delay resumption of oral energy intake. Because of continued high-risk nutrition status and potential for rapid change in medical status, nutrition assessment and counseling are necessary in both the hospital and ambulatory setting to promote resumption of oral intake and discontinuation of i.v. fluids.


Subject(s)
Ambulatory Care , Bone Marrow Transplantation , Cancer Care Facilities/statistics & numerical data , Dietary Proteins/administration & dosage , Drinking , Energy Intake , Length of Stay , Patient Discharge , Adolescent , Adult , Ambulatory Care/economics , Ambulatory Care/standards , Bone Marrow Transplantation/economics , Bone Marrow Transplantation/standards , Cancer Care Facilities/economics , Child , Child, Preschool , Cost-Benefit Analysis , Dietary Services/economics , Female , Fluid Therapy/economics , Humans , Infant , Length of Stay/economics , Male , Middle Aged , Parenteral Nutrition/economics , Patient Discharge/economics , Time Factors , Washington
16.
Med Klin (Munich) ; 95(4): 213-7, 2000 Apr 15.
Article in German | MEDLINE | ID: mdl-10808304

ABSTRACT

BACKGROUND: The acute renal failure remains a diagnostic challenge for the clinician. CASE REPORTS: Between 1991 and 1996, acute renal failure caused by hantavirus infection was diagnosed in 4 previously healthy male patients. Main symptoms consisted of fever, headache, arthralgia, lumbar and abdominal pain as well as a decline in diuresis. The ultrasonography showed a slight splenomegaly in 2 patients. The clinical chemistry showed elevated serum creatinine from 2.2 mg/dl to 6.7 mg/dl and thrombocytopenia from 4000 to 150,000/microliter. The examination of the urine showed slight proteinuria and microhematuria. The kidney biopsy of 1 patient showed a reversible damage of the tubuli. The pathologic findings normalized within 3 weeks in 3 patients without need for dialysis. One patient developed a severe clinical course with acute renal failure and pulmonary edema requiring dialysis. In all patients, the renal function improved.


Subject(s)
Acute Kidney Injury/diagnosis , Hantaan virus , Hemorrhagic Fever with Renal Syndrome/diagnosis , Adult , Biopsy , Diagnosis, Differential , Hemorrhagic Fever with Renal Syndrome/pathology , Humans , Kidney Function Tests , Kidney Tubules/pathology , Male , Middle Aged
17.
Med Klin (Munich) ; 94(9): 478-84, 1999 Sep 15.
Article in German | MEDLINE | ID: mdl-10544610

ABSTRACT

BACKGROUND: Cardiovascular disease is a leading cause of death after renal transplantation (RTx), and the incidence is considerably higher than in the general population. Aim of this study was to evaluate the incidence of atherosclerotic cardiovascular complications after RTx, the prevalence of cardiovascular risk factors, prior to and following RTx, and the association between the risk factors and complications. PATIENTS AND METHODS: Analysis of atherosclerotic cardiovascular diseases (coronary artery disease, cerebral and peripheral vascular disease) and cardiovascular risk factors before and after transplantation in 427 renal transplant recipients between 1987 and 1992 (mean age at transplantation 45 +/- 12 years, 58% male, 7% diabetics) with a mean posttransplant follow-up of 28 +/- 20 months. RESULTS: Following RTx 11.7% developed atherosclerotic cardiovascular diseases, the majority coronary artery disease (9.8%). The comparison of risk factors 12 months before and 24 months following transplantation showed: The prevalence of systemic hypertension (from 67% to 86%), diabetes mellitus (from 7% to 16%) and obesity with a body mass index > 25 kg/m2 (from 26% to 48%) had increased significantly whereas the number of smokers halved to 20%. The triglycerides decreased significantly (from 235 +/- 144 mg/dl to 217 +/- 122 mg/dl). The total and HDL cholesterol rose significantly (from 232 +/- 65 mg/dl to 273 +/- 62 mg/dl and from 47 +/- 29 mg/dl to 56 +/- 21 mg/dl, respectively). The LDL cholesterol increase was insignificant (from 180 +/- 62 mg/dl to 189 +/- 53 mg/dl). In the univariate analysis, cardiovascular diseases were significantly associated with male gender, age over 50 years, diabetes mellitus (DM), smoking, total cholesterol > 200 mg/dl, LDL cholesterol > 180 mg/dl, HDL cholesterol < 55 mg/dl, fibrinogen > 350 mg/dl, body mass index > 25 kg/m2, and more than 2 antihypertensive agents per day. The Cox proportional hazards model revealed DM with a relative risk (RR) of 4.3, age > 50 years (RR = 2.7), body mass index > 25 kg/m2 (RR = 2.6), smoking (RR = 2.5), and LDL cholesterol > 180 mg/dl (RR = 2.3) as independent risk factors. CONCLUSIONS: The high incidence of cardiovascular disease following renal transplantation is mainly due to a high prevalence and accumulation of classical risk factors before and following transplantation. The treatment of the risk factors must be effective and introduced early in the course of renal failure, further, they must be continued following transplantation. Future prospective studies should evaluate the success of treatment regarding reduction of cardiovascular morbidity and mortality in this high risk population.


Subject(s)
Cardiovascular Diseases/epidemiology , Cardiovascular Diseases/etiology , Kidney Transplantation/adverse effects , Age Distribution , Cardiovascular Diseases/therapy , Female , Germany/epidemiology , Humans , Incidence , Male , Middle Aged , Proportional Hazards Models , Prospective Studies , Retrospective Studies , Risk Assessment , Risk Factors , Sex Distribution
18.
Clin Transplant ; 12(5): 465-71, 1998 Oct.
Article in English | MEDLINE | ID: mdl-9787958

ABSTRACT

This study was designed to investigate the effect of tacrolimus (FK506) and of cyclosporine (CsA) on tubular function in renal graft recipients. Patients were randomised after renal transplantation to immunosuppressive treatment with FK506 (n = 8) or CsA (n = 8). Patients had a mean age of 45.7 +/- 3.4 yr; there was no difference in age, sex, HLA status or CMV mismatches. Neither was there any difference in the frequency of episodes of acute kidney failure between the groups, nor was there a significant difference in the frequency of episodes of kidney rejection within the first year. The mean FK506 level at the time lay at 14.7 +/- 14.4 ng/mL whole blood, and the mean CsA level at the time of study was 162 +/- 25 ng/mL whole blood. We performed renal function studies 6 months after transplantation: CIn, CPAH, NaHCO3 loading, and Na2SO4 loading. There was no significant impairment of GFR in patients treated with FK506 with 53.6 +/- 2.5 mL/min as compared to 58 +/- 6 mL in group 2. Plasma renin activity (0.6 +/- 0.4 ng/mL vs 2.3 +/- 3; p < 0.01) and aldosterone (69 +/- 17 vs 157 +/- 28.2 pg/mL; p < 0.05) were significantly decreased during treatment with FK506. Fractional HCO3 excretion was low in both groups, indicating that bicarbonate reabsorption in the proximal nephron was unimpaired. Distal renal tubular acidosis was demonstrated in 4 patients of group 1 but in only 1 of group 2. Potassium levels were slightly increased in patients treated with FK506 (5.4 +/- 0.2 mmoL/L) as compared to cyclosporine (4.9 +/- 0.3 mmoL/L; p < 0.05). Distal hydrogen ion secretion, evaluated by the ability to increase urinary pCO2 in a highly alkaline urine, was impaired in patients treated with FK506 (U-B pCO2: 16.1 +/- 4 vs 36 +/- 5.8; p < 0.05) as compared to patients treated with CsA. The maximum acidification capability (NAE) was slightly lowered during therapy with FK506 (67.5 +/- 11.8 versus 86.6 +/- 16.5 mumoL/min, ns). We conclude that FK506 administration results in a decrease in the rate of hydrogen ion secretion by the collecting tubules. This defect was disclosed by the finding of a subnormal pCO2 in a highly alkaline urine. These results show that FK506 is able to induce distal tubular acidosis. Distal tubular acidosis is part of FK506 induced nephrotoxicity, the pathogenesis of this type of hyperkalemic metabolic acidosis found in patients treated with FK506 after renal transplantation has to be further elucidated.


Subject(s)
Acidosis, Renal Tubular/chemically induced , Immunosuppressive Agents/adverse effects , Kidney Transplantation , Tacrolimus/adverse effects , Acidosis, Renal Tubular/physiopathology , Acidosis, Renal Tubular/urine , Cyclosporine/adverse effects , Glomerular Filtration Rate/drug effects , Humans , Hydrogen-Ion Concentration , Kidney Function Tests , Kidney Tubules, Distal/drug effects , Kidney Tubules, Distal/physiopathology , Middle Aged , Sodium Bicarbonate , Sulfates
20.
Am J Clin Nutr ; 67(5): 927-33, 1998 May.
Article in English | MEDLINE | ID: mdl-9583851

ABSTRACT

Experimental data have implicated intravenous lipids as being immunosuppressive, yet evidence that lipids are associated with an increase in clinically documented infections is sparse. A prospective trial conducted in patients with hematologic malignancies who were undergoing bone marrow transplantation compared the incidence of bacteremia and fungemia during the first month after the transplant. Patients (n = 512) were randomly assigned to receive 6-8% (low dose) or 25-30% (standard dose) of total daily energy as a 20% lipid emulsion. An adaptive randomization scheme stratified for treatments that might influence infection outcome (hematopoietic growth factors, fluconazole, graft-versus-host disease prophylaxis with steroids, pentoxifylline, intravenous immunoglobulin, and total body irradiation). The transplant type (autologous, related family donor, or unrelated donor) did not differ in distribution between treatment groups. Of the evaluable patients (n = 482), 55 patients in the standard-dose lipid group developed bacteremia or fungemia compared with 54 in the low-dose lipid group. The log-rank test comparing the time to first infection found no association between the incidence of bacteremia or fungemia and intravenous lipid (P = 0.95). Similar results were found when analyzed as intent-to-treat (P = 0.98), when bacterial or fungal infections at all sites were included (P = 0.94), and when the observation period was extended to 60 d (P = 0.58 for blood infections, P = 0.77 for infections at all sites). These data indicate that moderate amounts of intravenous lipid rich in linoleic acid are not associated with an increased incidence of bacterial or fungal infections in patients undergoing bone marrow transplantation and receiving total parenteral nutrition.


Subject(s)
Bacteremia/microbiology , Bone Marrow Transplantation/adverse effects , Fungemia/microbiology , Lipids/therapeutic use , Adolescent , Adult , Aged , Bacteremia/etiology , Blood/drug effects , Blood/microbiology , Blood Glucose/drug effects , Blood Glucose/metabolism , Bone Marrow Transplantation/immunology , Child , Child, Preschool , Dose-Response Relationship, Drug , Fatty Acids/blood , Female , Fungemia/etiology , Graft Survival/drug effects , Graft vs Host Disease/etiology , Humans , Incidence , Infant , Lipids/administration & dosage , Lipids/adverse effects , Male , Middle Aged , Parenteral Nutrition, Total , Postoperative Complications/drug therapy , Postoperative Complications/prevention & control , Prospective Studies , Recurrence , Survival Rate , Time Factors
SELECTION OF CITATIONS
SEARCH DETAIL
...