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Query: UMLS:C0243026 (sepsis)
 52,417 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Inappropriate polyuria leading to hypovolemia and hypotension occurs frequently in severely septic patients. It's etiology was studied in three patients with polyuria and systolic hypotension. Glomerular filtration rate and renal blood flow were measured by the standard renal clearance techniques. Renal blood flow distribution to the outer cortex, inner cortex-outer medulla, and the inner medulla were measured by radioactive xenon. The glomerular filtration rate, renal blood flow, and renal blood flow distribution were normal. Polyuria does not result from a maldistribution of renal blood flow. Antidiuretic hormone did not alter the polyuric syndrome. These data suggest that sepsis produces a blockade at either the distal tubule or the collecting duct, thereby preventing salt and water conservation. This blockade may be due to either a toxin or a toxic metabolic breakdown product of sepsis.
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PMID:Mechanism of inappropriate polyuria in septic patients. 84 54

The acute onset of oliguria and azotemia in the postoperative setting may be caused by pre-renal causes or intrinsic renal damage. The first step in arriving at a diagnosis is to review the history as noted above for clues regarding fluid balance, treatment with nephrotoxins, etc. The typical patient with prerenal azotemia will present with evidence of the recent onset of worsening of pre-existing cardiac disease, renal or gastrointestinal fluid loss, or the accumulation of acites, edema, or retroperitoneal fluid. In the absence of very recent diuretic therapy, he will be excreting a scant amount of concentrated (greater than 400 mOsm per L) sodium free (less than 10 to 20 mEq per L) urine. The serumBUN/Cr ratio is often greater than 15 to 20:1, and their urinary sediment will be bland. In an occasional patient in whom these studies give equivocal results, additional help may be obtained with measurements of central venous pressure (CVP) or pulmonary wedge pressure (PWP) and by noting their response to intravenous fluid loading. A rising CVP or PWP in the face of salt loading is, of course, evidence against prerenal azotemia. Patients with obstructive uropathies may be oligoanuric or polyuric-occasionally a characteristic alternating polyuria and oliguria is found (due to displacement of a stone or relief of edema). When oliguric their urine typically contains substantial amounts of sodium (greater than 20 mEq per L), is isotonic, and their OsmU:OsmP is les s than or equal to 1.2. Their urinary sediment will reflect the cause of their obstruction as noted above. A renal scan, ultrasound study, or infusion IVP are mandatory to rule out the possibility of obstructive uropathy. If these nonivasive studies are equivocal, one must consider doing a unilateral retrograde. The development of ATN usually occurs in the setting of hypotension, sepsis, dehydration, and with exposure to nephrotoxins. Most patients with be excreting scant amounts of isotonic urine containing more than 20 to 30 mEq per L of sodium. Their CrU:CrP is less than or equal to 20:1 and their urinary sediment reveals many epithelial cells and casts. Those patients with nonoliguric ATN have urine outputs which may exceed 2 liters per day. Despite this output they demonstrate a stepwise increase in serum urea and creatinine. Urine sodium and osmolality are not very helpful in this setting. Many such patients do have low (less than 20 mEg per L) urine sodium concentration and excrete isotonic urine.
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PMID:Pre- and postoperative renal failure. 96 Mar 14

Tumor necrosis factor (TNF) is an important mediator of the systemic response to gram-negative sepsis and endotoxemia. We studied the renal effects of a sublethal TNF infusion in dogs (0.54 = 10(5) international units per kilogram of body weight during a six hour period). The TNF-infused dogs (n = 4) had marked polyuria and natriuresis in comparison with those in the control group (n = 12) (urine output, 35.3 +/- 4.1 versus 3.7 +/- 0.5 millimeters per kilogram per six hours p less than 0.01; sodium excretion, 2.82 +/- 0.27 versus 0.75 +/- 0.19, p less than 0.01). To evaluate the role of the spleen in this response, seven dogs that had splenectomy were infused with TNF. Splenectomy abolished both the polyuria and the natriuresis; this could not be explained by the differences in fluid balance or in hemodynamic or metabolic alterations. Treatment with ibuprofen given intravenously (12.5 milligrams per kilogram 40 minutes before and three hours after the beginning of TNF infusion) in eight dogs that did not undergo splenectomy also abolished these renal effects. Prostaglandin 2 (PGE2) concentrations in selected blood samples from the splenic vein did not increase with TNF infusion, excluding circulating PGE2 as a possible mediator of the renal effects. The results of these studies indicate that, during septic challenge or severe inflammation, the spleen participates in signaling the kidney to increase water and sodium excretion. These renal events are mediated through the cyclo-oxygenase pathway.
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PMID:Splenectomy attenuates the inappropriate diuresis associated with tumor necrosis factor administration. 190 Sep 57

A boy, aged 14 1/2 years, presented with Burkitt leukemia. His renal status was normal before treatment. Chemotherapy (SFOP LMB 86 protocol) was begun Oct. 9, 1986. After the first 2 courses of chemotherapy, the patient had Gram negative sepsis treated with cefotaxime, netilmycine, Vancomycin and ornidazole. During sepsis, nephrotic syndrome developed (albumin 25 g/l, non selective proteinuria 15 g/24 h), with moderately high blood pressure, functional renal failure (creatinine 141 mumols/l, U/P urea = 20), polyuria and tubular damage. Kidney ultrasonography was normal. Needle biopsy showed minimal glomerular lesions, acute tubular lesions, and no deposits in immunofluorescence. The nephrotic syndrome disappeared within 3 weeks, with treatment of leukemia. He is at present in complete remission with a follow-up of 25 months.
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PMID:[Nephrotic syndrome and B leukemia]. 262 44

Two cases of pituitary abscesses are reported. The first case was a 22-year-old female who was admitted with 14 months history of intermittent fever and headache followed by amenorrhea and polyuria. Plain craniograms showed no remarkable changes on the sella turcica. Direct coronal CT demonstrated a cystic lesion with a ring-like enhanced capsule in the pituitary complex with the apparent bulging of the pituitary top surface. On dynamic CT, the cystic lesion showed no remarkable increase in density. Transsphenoidal surgery was performed and a purulent materials was drained by cutting the underlying fibrous pituitary tissue. Pathological specimen revealed a marked inflammatory reaction around the degenerative pituitary gland. The second case was a 27-year-old female who underwent transsphenoidal excision of craniopharyngioma on May 12, 1983. Postoperatively she did well with the hormonal replacement therapy until 9 months after surgery when a follow up direct coronal CT revealed a cystic lesion with ring-like enhancement in the pituitary fossa. Purulent material was found at transsphenoidal surgery. Pathological specimen from the hard capsule was a chronic inflammatory fibrous tissue without tumorous component. Over seventy cases of pituitary abscesses have been reported previously, but the majority of them were secondary infections associated with systemic sepsis, chronic sphenoid sinusitis or pituitary tumors. Primary pituitary abscesses were rare and would be difficult to be diagnosed preoperatively without an aid of recent CT technology. Thirty cases in the literature since 1970 are reviewed and its clinical pictures and radiological findings are discussed.
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PMID:[Pituitary abscess: report of two cases and a review]. 380

A patient being treated for leukemia received lithium carbonate and ticarcillin for sepsis, and polyuria and severe hypernatremia developed. Although useful in neutropenic patients, the simultaneous use of these drugs may result in life-threatening hypernatremia.
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PMID:Hypernatremia during lithium and ticarcillin therapy. 678 44

A case is presented of a patient with multiorgan trauma. The main diagnostic problem was coexisting haemorrhage. Curable skin defects were healed after several covering them with intermediate thickness mesh grafts. The postoperative course was complicated with sepsis and acute non-inflammatory renal failure with polyuria.
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PMID:[Multiorgan trauma]. 781 1

Twenty-six patients presenting with 33 episodes of Diabetic Ketoacidosis (DKA) and managed on a protocol oriented system were analysed. Diabetes mellitus was newly diagnosed at presentation in 18% of the 33 episodes. The presenting symptoms were polyuria and polydipsia (58%), nausea and vomiting (52%), change in sensorium (24%), hyperventilation (24%), and abdominal pain (18%). The main clinical findings at admission were dehydration (97%), acidotic respiration (67%), coma and confusion (61%), a clinically detectable source of sepsis (49%), fever (33%) and hypotension (9%). Blood sugar levels at admission ranged between 351 mg/dl and 1200 mg/dl (mean = 633 mg/dl). The mean serum potassium at diagnosis was 5.1 mmol/l and the mean calculated serum osmolality was 320 mOsm/kg. The mean serum osmolality was higher in those with disturbed conscious level. Infections, particularly those of the urogenital tract, were the main precipitating cause for the DKA. Only 12 of the 19 patients with sepsis had fever. Eight of the episodes were attributed to patients' non-compliance with insulin. Four patients died during the 33 hospitalisations, giving a mortality rate of 10%. Death occurred despite glucose control and stabilisation of the ketoacidotic state and was due to uncontrolled septicaemia. The mean duration of hospitalisation was 11 days. The ketoacidosis state was reversed after a mean duration of 9.5 hours, with an average soluble insulin requirement per patient of 52.4 units.
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PMID:Diabetic ketoacidosis--a study of 33 episodes. 815 79

Four hundred and eighty-two patients with spontaneous skin and superficial sepsis and 291 controls of similar age and sex underwent random capillary blood glucose measurements in order to assess whether screening for diabetes in patients presenting with skin sepsis to an Accident & Emergency Department detects a greater number of cases than that present in the background population. All subjects with a concentration > 7.8 mmol/l were subsequently followed up with a 75 g oral glucose tolerance test. Forty-two (8.7%) of the 482 skin sepsis patients had a capillary blood glucose > 7.8 mmol/l compared to eight (2.7%) of the 291 without sepsis (chi 2 = 9.71, P < 0.002). Of these, 26 of the skin sepsis group and 7 of the control group attended for follow up. Of those who attended, 13 of the skin sepsis group had an abnormal glucose tolerance test (seven diabetes, six impaired glucose tolerance-IGT) compared to two (one diabetes, one IGT) of the control group (chi 2 = 2.87, P < 0.1). The difference in cases of frank diabetes between the two groups was not statistically significant. Of the total eight diabetic cases identified, five (on direct questioning) had symptoms of hyperglycaemia (thirst, polyuria and/or weight loss) and two of the others were obese, one of whom had documented ischaemic heart disease. Thus, while most cases of diabetes in patients with skin sepsis could be detected by specifically asking about hyperglycaemic symptoms and performing a blood glucose estimation when these are present, we suggest that the screening of patients with skin sepsis over 40 years of age provides an opportunistic method of screening. This strategy should yield clinically significant numbers of abnormal cases.
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PMID:The value of screening for diabetes in patients with skin sepsis. 845 78

As with most liver diseases, the symptoms of hepatitis in dogs are nearly always aspecific: the dogs eat less, are apathetic, sometimes have polyuria/polydipsia, and sometimes have diarrhoea. Hepatoencephalopathy and ascites only occur with these symptoms in very advanced stages of chronic hepatitis. Only a part of the dogs have jaundice. Because of these aspecific symptoms, the diagnosis hepatitis is often not taken into consideration, even though the presence of a liver disease can be easily detected by measuring plasma concentrations of alkaline phosphatase and bile acids, one or both of which are elevated. The diagnosis is confirmed by histological examination of a liver biopsy sample. The most common forms of hepatitis are non-specific reactive hepatitis, acute hepatitis, and chronic hepatitis. Non-specific reactive hepatitis is a reaction against endotoxin as a result of sepsis or an increased gastrointestinal absorption. Treatment is directed to the primary process. Leptospirosis also causes non-specific reactive hepatitis, but then renal insufficiency is the most prominent feature. The diagnosis is made not on the basis of a liver biopsy but on the basis of increased IgM titres against Leptospira. Immediate treatment with antibiotics and infusions at the first signs (jaundice and uraemia) can save the animal's life. Acute hepatitis can develop as a result of infection, toxins, or liver hypoxia. There is no specific treatment, but adequate recovery often occurs with supportive treatment. Corticosteroids are contraindicated. Chronic hepatitis, which can lead to cirrhosis, is the most common form of hepatitis. It is an autoimmune inflammatory reaction that is usually caused by a virus infection but sometimes by poisoning (intoxication). Long treatment with prednisolone or azathioprine is usually successful, but early recognition of the disease increases the likelihood of success. Nowadays, chronic hepatitis due to hepatic copper accumulation in Beddlington terriers can be detected by DNA tests. Such tests make it possible to distinguish between carriers and non-carriers. Affected animals can be kept symptom-free by life-long treatment with zinc gluconate or penicillamine.
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PMID:[Hepatitis in dogs; a review]. 958 48


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