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Urinary tract bacterial infections are common in women. Moreover, they tend to recur throughout life and in the same relatively small group of women. In most cases, bladder and renal infections are asymptomatic and manifest by demonstrating coincidental bacteriuria. In some instances, however, especially with frequent sexual activity, pregnancy, stone disease, or diabetes, symptomatic cystitis or pyelonephritis develops and antimicrobial therapy is indicated. In most cases, cystitis is easily managed with minimal morbidity. When acute pyelonephritis develops in an otherwise healthy woman, however, consideration for ureteral obstruction is entertained. If her clinical response to proper therapy is not optimal, then imaging studies are indicated. Pregnancy is a common cause of obstructive uropathy, and severe renal infections are relatively common. Because they usually arise from preexisting covert bacteriuria, experts recommend screening and eradication of these silent infections as a routine prenatal practice.
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PMID:Urinary tract infection in women. 1626 May 29

The aim of this study was to describe the clinical spectrum of chronic renal failure (CRF) in the elderly. The diagnosis of CRF was made using standard clinical criteria. The elderly was defined as person with over 60 years of age. In total, 200 elderly patients with CRF were evaluated between July 2002 and February 2004. Their age (male: 146; female: 54) ranged between 60 and 90 (mean 64.31+/-4.18) years. Diabetic nephropathy was the most common (46%) cause of CRF. Hypertensive nephrosclerosis, chronic interstitial nephritis and obstructive uropathy were responsible for CRF in 18%, 14% and 13% of patients, respectively. We observed chronic glomerulonephritis in 7% of elderly CRF. Urinary tract infection (55.5%), hypovolemia (22.2%), accelerated hypertension (11.1%) and sepsis (11.1%) were responsible for acute exacerbation of renal failure in 36 (18%) patients. Associated co-morbid conditions were noted in 93 (46.5%) patients. They included; coronary artery disease 46 (49.46%), cerebrovascular disease 20 (21.50%), osteoarthritis 13 (13.97%), chronic obstructive pulmonary disease 6 (6.45%), dilated cardiomyopathy 5 (5.37%), and malignancy in 3 (3.22%) patients. Acute dialytic support was required in 164 (82%) cases and remaining 36 (18%) patients received conservative management. Mortality was noted in 25 (12.5%) cases. The coronary artery disease (48%), acute pulmonary edema (20%) and hyperkalemia (12%) were the main causes of death. Subsequent evaluation revealed that 102 (51%) patients had ESRD of which only 3 (2.94%) patients could afford CAPD. A total of 11 (10.7%) patients underwent chronic maintenance hemodialysis for 3-4 months and then discontinue dialysis mainly because of financial constraints. Remaining 88 (86.27 %) patients with ESRD were discharged from hospital after symptomatic improvement with acute dialysis. Thus, diabetic nephropathy related to type-2 diabetes was the commonest cause of CRF in our elderly patients. Chronic renal failure in elderly was associated with a number of co-morbid conditions, which contributed significantly to morbidity and mortality. Acute on chronic renal failure with severe uremic complications were an important cause of hospitalization. The financial constraint was the major limiting factor for the management of elderly ESRD patients.
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PMID:Clinical spectrum of chronic renal failure in the elderly: a hospital based study from eastern India. 1709 77

Renal papillary necrosis is not a pathologic entity but rather a descriptive term for a condition--necrosis of the renal papillae--that has various possible causes. The renal medulla and papillae are vulnerable to ischemic necrosis because of the peculiar arrangement of their blood supply and the hypertonic environment. The etiology of renal papillary necrosis includes diabetes, analgesic abuse or overuse, sickle cell disease, pyelonephritis, renal vein thrombosis, tuberculosis, and obstructive uropathy. Renal papillary necrosis has been diagnosed with the use of intravenous urography and ultrasonography, but contrast material-enhanced computed tomography (CT) may better depict a full range of typical features, including contrast material-filled clefts in the renal medulla, nonenhanced lesions surrounded by rings of excreted contrast material, and hyperattenuated medullary calcifications. In the presence of papillary sloughing, CT may depict hydronephrosis and filling defects in the renal pelvis or ureter, which also may contain calcifications. During healing, the epithelialized papillary tip appears blunted. Shrinkage of the kidney, a common sequela, also may be detected at CT. Multi-detector row CT depicts these and other features more clearly and directly than single-detector row CT, given the advantages of thinner sections and multiplanar reformation, and it may help identify the condition at an earlier stage, when effective treatment can reverse the ischemic process. Familiarity with the CT features of the condition therefore is useful for its successful diagnosis and management.
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PMID:Renal papillary necrosis: review and comparison of findings at multi-detector row CT and intravenous urography. 1710 53

Erectile dysfunction (ED) is frequently associated with cardiovascular disease. Epidemiological data on the frequency of ED in vascular surgery patients is rarely reported. We evaluated the prevalence of this comorbidity in patients consulting the vascular surgery outpatient clinic. Over a 6-month period, a short version of the International Index of Erectile Function (IIEF) questionnaire consisting of six ED-relevant questions was handed out to 440 vascular surgery outpatients. Clinical data were collected from patients' records. Linear regression models with forward selection were used to investigate associations between erectile function score and possible risk factors. The return rate was 31% (137 patients). Eight patients (6%) were taking phosphodiesterase inhibitors. ED, as defined by an erectile function score of 25 or less and/or use of phosphodiesterase inhibitors, was found in 90% (95% CI: 84% to 95%) of cases. Moderate or severe ED, as defined by an erectile function score of 16 or less and/or use of phosphodiesterase inhibitors, was found in 70% (95% CI: 62% to 78%) of cases. Increased age, abdominal aortic aneurysm, peripheral arterial disease, urologic disease, insulin-dependent diabetes mellitus, and use of beta-blockers were significantly associated with a lower erectile function score. In conclusion, erectile dysfunction is a frequent and often missed comorbidity in vascular surgery patients. While ED may have a profound impact on the patient's quality of life, attention should also be paid to the patient's preoperative sexual function, considering the availability of oral pharmacotherapies and possible consequences concerning liability in postoperative patients in whom pre-existing ED was not identified properly.
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PMID:Prevalence of erectile dysfunction in vascular surgery patients. 1745 Oct 89

Chronic renal failure (CRF) is a major public health problem. Early diagnosis and proper management have important roles in prevention of CRF progression to end-stage renal disease (ESRD). For this purpose, determining the etiology of CRF may be helpful. This study was conducted in the nephrology department at the Mostafa Khomeini Hospital in Tehran, Iran from March 2001 to March 2005, to determine the etiology of CRF in adult Iranian patients. A total of 1200 patients with a diagnosis of CRF were involved in the study. Relevant data were collected using a reliable questionnaire. All data analyses were carried out using SPSS and the chi2 test. Of the 1200 patients, 61% were males and 39% females. The most frequent age group was 61-75 years (38.3%) and the mean age of the study patients was 51.6 +/- 17 years. The etiology of CRF in our series included: diabetes mellitus in 26.8%, hypertension in 13.5%, obstructive uropathy in 12%, cystic and congenital disorders in 10.3%, glomerulonephritis in 6.5%, urinary tract infections in 4%, vasculitis in 2%, tubulo-interstitial nephritis and pregnancy related in 0.8% each and unknown causes in 29.5% of the patients. Laboratory and ultrasonographic assessment at initiation of the study revealed blood urea nitrogen> 100 mg/dl in 57.8% of the patients, serum creatinine> 10 mg/dl in 40.3%, glomerular filtration rate (GFR) < 10 ml/min in 61.3%, hemoglobin < 10 g/dl in 65.8% and kidney size lesser than 8 cm in 46% of the cases. There was a significant statistical relationship between kidney size and duration of hypertension greater than five years (P = 0.017). The high frequency of CRF of unknown etiology in this study may be attributed to diagnostic limitations prevailing in our country. A GFR of < 10 ml/min in 61.3% of the cases at presentation suggests late diagnosis and/or referral. Aggressive screening and treatment strategies to prevent ESRD are recommended.
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PMID:Epidemiology of chronic renal failure in Iran: a four year single- center experience. 1749 93

Bangladesh is one of the densely populated countries, a nation of 128 million people, 75% of whom lives in rural areas and the annual per capita gross national product (GNP) is US$ 380.00. The health care budget is 1.2% of GNP and the priority areas are population control, provision of clean drinking water and eradication of communicable diseases. The country has a small number of nephrologists and renal care is available in large cities only. The causes of renal diseases include glomerulonephritis, diabetes, hypertension, nephrolithiasis, obstructive uropathy and interstitial nephropathy. The incidence of end-stage renal disease is not known, but would be much higher than in developed countries because of high incidence of infection and environmental pollution. The treatment of ESRD has low priority in Bangladesh because of the government health policy and high cost of treatment. As a result, less than 10% of ESRD patients are able to maintain dialysis in private hospitals and governmental dialysis centers that are already overcrowded. The vast majority of patients who are started on dialysis die or stop treatment within the first three months. Renal transplantation is not as expensive as dialysis and is less costly in the university hospital than in private hospitals. Cyclosporine is usually replaced by azathioprine after six months of transplantation. Although organ act law is effective since 1998, cadaveric transplant has not picked up due to lack of infrastructure, facility and orientation regarding cadaveric transplantation. Preventive measures of renal disease can not be overemphasized.
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PMID:Health delivery system for renal disease care in bangladesh. 1764 75

Hepatitis C virus (HCV) infection is often associated with kidney diseases such as membranoproliferative glomerulonephritis (MPGN), with and without cryoglobulinemia, membranous glomerulonephritis (MGN) or glomerulosclerosis (FSGN). The aim of our study was to determine the frequency of HCV with or without hypertransaminasemia in patients with chronic nephropathy in the predialytic phase. We tested 340 subjects with chronic renal insufficiency (CRI) from our hospital's nephrology outpatient clinic for anti-HCV antibodies. In positive subjects we tested for HCV RNA by PCR method, monitoring, for at least 4 months, common biohumoral parameters including transaminases (AST, ALT). Of the 340 subjects, 46 (13.5%) were positive for HCV RNA, and 8 of these (17%) showed constant alteration of transaminases. HBsAg was found in 8 of the total study population (2.3%), and none of these showed altered transaminases. Type II diabetes mellitus was found in 26% (12/46) of the HCV-RNA positive patients, and in only 12.5% (37/294) of the negative ones. The kidney diseases we found in the 46 HCV-RNA positive patients were: diabetic nephropathy in 11 (23.9%), MPGN in 7 (15.2%), MPGN + cryoglobulinemia in 2 (4.3%), interstitial nephropathy in 4 (8.7%), IgA mesangial GN in 3 (6.5%), hypertensive nephropathy in 2 (4.3%), focal and segmental GN in 1 (2.2%), urologic disease in 4 (8.7%), other (hematological, genetic, iatrogenic) in 3 (6.6%), unknown in 9 (19.6%). Our data show that the most frequent kidney diseases associated with HCV infection were diabetic related nephropathy and MPGN with and without cryoglobulinemia. HCV infection had a positive association with diabetes. It is interesting to note that in this study population the hepatitis C concomitant to kidney disease was unusually mild: only 4 of the 46 subjects (9%) showed clinical, biohumoral and ultrasound evidence of cirrhosis.
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PMID:Hepatitis C and kidney disease. 1793 31

The incidence of genitourological diseases is greater that that of circulatory disorders, benign prostate hyperplasia (BPH) is the commonest urological disease in the elderly and senile males. According to the results of the authors' clinicomorphological study, BPH has been detectable in 69% of the males who died at the age of above 60 years. BPH frequently occurs in patients with arterial hypertension, diabetes mellitus, coronary heart disease, and metabolic syndrome, which necessitates a search for the commonness of causes or mechanisms of development of these diseases. The most important complication of BPH is acute urinary retention. Its major causes in therapeutic clinic are recurrent chronic prostatitis, decompensation of circulatory insufficiency, and emergencies generally resulting from alcohol abuse. As this takes place, the worst prognosis is observed in elderly patients with the complicated comorbid status, particularly in the presence of chronic alcohol intoxication. Patients with BPH are at high and surgical treatment-unassociated risks for pulmonary arterial thromboembolism (PATE). In these patients, the causes of PATE are pelvic deep vein thromboses whose incidence in clinical practice is underestimated.
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PMID:[Benign prostate hyperplasia as an age-related problem]. 1854 Apr 48

Data on incidence and prevalence rates of end-stage renal disease (ESRD) from selected countries including Saudi Arabia are provided. Current data from this country suggest that the incidence of treated ESRD (t-ESRD) in the age-group 0-20 years is 14 per million population (PMP) while the combined incidence for all ages is 240 PMP. The cost of management of the patients is staggering. In Japan, it has been estimated that the projected prevalence of t-ESRD will be 1111 PMP needing an estimated budget of US $ 5.8 billion per year for their management. Globally, more than US $ 50 billion would be needed per year with the presently available treatment modalities. This financial liability might make "Health for all by the year 2000" a myth unless some cheaper method of treatment is made available. Vigorous research is needed towards identifying and prioritizing vulnerable groups for ESRD by identifying and properly managing at-risk groups. These include patients with diabetes mellitus and hypertension as well as patients with indicators like proteinuria and obstructive uropathy. Cheaper modes of renal replacement therapy should be sought. Interesting ideas such as induction of diarrhea for amelioration of renal failure need to be explored further as also the use of the patient's own intestine as a medium for molecular exchange.
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PMID:Incidence of end-stage renal disease: magnitude of the problem and its implications. 1858 33

Renal parenchymal hypoxia, documented under a variety of clinical conditions, conceivably contributes to the progression chronic kidney disease. In this review, normal physiologic medullary hypoxia and abnormal profiles of renal pO(2) in chronic kidney diseases are presented, and the mechanisms leading to anomalous renal tissue oxygenation are discussed. Direct measurements of pO(2) with oxygen electrodes, immunostaining with pimonidazole (which binds to regions with very low pO(2)), or the detection of hypoxia-inducible factor (HIF)-alpha (which accumulates in hypoxic regions, initiating hypoxia-adaptive responses), all serve to detect the distribution and extent of renal parenchymal hypoxia under experimental settings. The use of BOLD MRI as a noninvasive tool, detecting deoxygenated hemoglobin in hypoxic renal tissues, has evolved from experimental settings to human studies. All these modalities indicate that abnormal renal oxygenation develops under conditions such as chronic glomerular, tubulointerstitial or renovascular disease, in diabetes, hypertension, aging, renal hypertrophy, anemia or obstructive uropathy. Abnormal renal tissue hypoxia modifies the pattern of regional gene expression, evoking a host of adaptive and renoprotective pathways (such as HIF-mediated erythropoietin or heme-oxygenase-1), in parallel with the induction of potentially harmful mediators that participate in the progression of chronic kidney injury. Slowing the progression of chronic kidney disease may be achieved by a better understanding of these parallel processes and the accomplishment of a selective control of such protective and maladaptive responses.
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PMID:Renal parenchymal hypoxia, hypoxia response and the progression of chronic kidney disease. 1863 27


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