ABSTRACT
The timely integration of palliative medicine is an important component in the treatment of various advanced diseases. While a German S3-guideline on palliative medicine exists for patients with incurable cancer, a recommendation for non-oncological patients and especially for palliative patients presenting in the emergency department or intensive care unit is missing to date. Based on the present consensus paper, the palliative care aspects of the respective medical disciplines are addressed. The timely integration of palliative care aims to improve quality of life and symptom control in clinical acute and emergency medicine as well as intensive care.
Subject(s)
Emergency Medicine , Quality of Life , Humans , Consensus , Critical Care , Palliative CareABSTRACT
The timely integration of palliative medicine is an important component in the treatment of various advanced diseases. While a German S3-guideline on palliative medicine exists for patients with incurable cancer, a recommendation for non-oncological patients and especially for palliative patients presenting in the emergency department or intensive care unit is missing to date. Based on the present consensus paper, the palliative care aspects of the respective medical disciplines are addressed. The timely integration of palliative care aims to improve quality of life and symptom control in clinical acute and emergency medicine as well as intensive care.
Subject(s)
Emergency Medicine , Quality of Life , Humans , Consensus , Critical Care , Intensive Care UnitsABSTRACT
The timely integration of palliative medicine is an important component in the treatment of various advanced diseases. While a German S-3-guideline on palliative medicine exists for patients with incurable cancer, a recommendation for non-oncological patients and especially for palliative patients being treated in the emergency department or intensive care unit is missing to date. Based on the present consensus paper, the palliative care aspects of the respective medical disciplines are addressed. The timely integration of palliative care aims to improve quality of life and symptom control in clinical acute and emergency medicine as well as intensive care.
Subject(s)
Emergency Medicine , Quality of Life , Humans , Consensus , Critical Care , Palliative CareABSTRACT
The integration of palliative medicine is an important component in the treatment of various advanced diseases. While a German S3 guideline on palliative medicine exists for patients with incurable cancer, a recommendation for non-oncological patients and especially for palliative patients presenting in the emergency department or intensive care unit is missing to date. Based on the present consensus paper, the palliative care aspects of the respective medical disciplines are addressed. The timely integration of palliative care aims to improve quality of life and symptom control in clinical acute and emergency medicine as well as intensive care.
Subject(s)
Emergency Medicine , Quality of Life , Humans , Consensus , Critical Care , Intensive Care Units , Palliative CareABSTRACT
BACKGROUND: The endothelial nitric oxide (NO) system plays a central role in regulating vascular tone. Endothelial dysfunction has been closely linked to reduced activity in the NO system. Tetrahydrobiopterin (BH4) is an essential cofactor of all NO synthase isoforms. METHODS: We examined the effects of BH4 on the NO system assessed by measurement of serum cGMP levels and NO breakdown products (NOx) in 12 healthy volunteers. RESULTS: Application of a total of 19 mg/kg BH4 intravenously (i.v.) over 3 hours led to a dose-dependent increase in serum cGMP concentrations from a median 3.3 nM (interquartile range [IQR] 1.1-5.6) to 5.7 nM (IQR 2.4-13.3, p=0.008) and NOx from a median 49.3 microM (IQR 39.8-56.6) to 59.7 microM (39.6-85.5) (p=0.058). Systemic and renal hemodynamics measured by inulin and p-aminohippuric acid (PAH) clearance remained unchanged. Plasma renin activity was significantly increased (2.0 [IQR 1.0-2.8] to 2.3 ng AngI/mL per hour [IQR 1.7-4.0], p=0.045), whereas aldosterone, erythropoietin and B-type natriuretic peptide levels did not change. In a second study, oral BH4 given over 3 days (800 mg/day) similarly increased serum cGMP and ameliorated the depressive effects of the NO synthase inhibitor L-NAME (1.5 mg/kg i.v.) on the glomerular filtration rate. CONCLUSIONS: Application of BH4 in high doses is safe and enhances formation of cGMP, pointing to increased bioavailability of NO.
Subject(s)
Biopterins/analogs & derivatives , Nitric Oxide/metabolism , Renal Circulation/drug effects , Renal Plasma Flow/drug effects , Administration, Oral , Adult , Biopterins/administration & dosage , Biopterins/pharmacokinetics , Cyclic GMP/blood , Dose-Response Relationship, Drug , Endothelium, Vascular/drug effects , Endothelium, Vascular/metabolism , Glomerular Filtration Rate/drug effects , Glomerular Filtration Rate/physiology , Humans , Infusions, Intravenous , Male , NG-Nitroarginine Methyl Ester/administration & dosage , NG-Nitroarginine Methyl Ester/pharmacology , Reference Values , Renal Circulation/physiology , Renal Plasma Flow/physiologyABSTRACT
BACKGROUND: We performed a multicenter, double-blind, randomized, parallel-group study to compare the renal effects of iomeprol-400 and iodixanol-320 in patients with preexisting chronic kidney disease undergoing contrast-enhanced multidetector computed tomography of the liver. METHODS: One hundred forty-eight patients with moderate-to-severe chronic kidney disease, ie, serum creatinine (SCr) > or =1.5 mg/dL (132.6 micromol/L) and/or calculated creatinine clearance (CrCl) <60 mL/min, undergoing contrast-enhanced multidetector computed tomography of the liver were randomized to equi-iodine doses (40 gI) of either the low-osmolar agent iomeprol-400 (400 mgI/mL, 726 mOsm/kg, N = 76) or the isotonic agent iodixanol-320 (320 mgI/mL, 290 mOsm/kg, N = 72), injected intravenously at 4 mL/S, followed by a bolus of 20 mL normal saline solution at the same rate. SCr was obtained at screening, baseline and at 48 to 72 hours postdose. SCr measurements and CrCl calculations were performed by a central laboratory. Contrast-induced nephropathy (CIN) was defined as an absolute SCr increase of > or =0.5 mg/dL (44.2 micromol/L) from baseline to 48 to 72 hours postdose. Mean SCr changes from baseline were also assessed. A Renal Safety Review Board comprised 3 medical experts reviewed the renal safety data, demographics, medical history, CIN risk factors, concomitant medications, and hydration status of each subject in a blinded manner. RESULTS: The 2 study groups were comparable with regard to age, gender distribution, concomitant nephrotoxins, hydration status, and total iodine dose; however, the iomeprol-400 group showed a significantly higher proportion of patients with diabetes mellitus (P = 0.02). Baseline SCr was 1.7 +/- 0.6 mg/dL (150.3 +/- 53.0 micromol/L) in the iomeprol-400 group and 1.7 +/- 0.7 mg/dL (150.3 +/- 61.9 micromol/L) in the iodixanol-320 group (P = 0.87). Predose CrCl was 41.5 +/- 13.1 mL/Min in the iomeprol-400 group and 43.0 +/- 13.3 mL/Min in the iodixanol-320 group (P = 0.49). Five of 72 patient receiving iodixanol-320 (6.9%) and none of the patients receiving iomeprol-400 showed an increase of > or =0.5 mg/dL (44.2 micromol/L) from baseline [P = 0.025, 95% CI (-12.8%, -1.1%)]. The mean SCr change from baseline was significantly higher (P = 0.017 ANCOVA) after iodixanol-320 (0.06 +/- 0.27) than after iomeprol-400 (-0.04 +/- 0.19). CONCLUSIONS: The incidence of CIN was significantly higher after IV administration of iodixanol-320 than iomeprol-400. The mean rise in SCr from baseline was also higher in patients receiving iodixanol.
Subject(s)
Contrast Media/adverse effects , Iopamidol/analogs & derivatives , Kidney Failure, Chronic/diagnostic imaging , Nephrosis/chemically induced , Nephrosis/diagnostic imaging , Triiodobenzoic Acids/adverse effects , Aged , Creatinine/blood , Double-Blind Method , Female , Humans , Injections, Intravenous , Iopamidol/adverse effects , Kidney Function Tests , Male , Nephrosis/blood , Radiographic Image Enhancement/methods , Risk Assessment/methods , Risk Factors , Tomography, X-Ray ComputedABSTRACT
BACKGROUND: To determine whether gadolinium-based contrast media (CM) could be used safely for angiographies in patients with renal dysfunction we investigated renal function after gadobutrol exposure and compared the results with standard iodinated CM (iohexol) in a randomized clinical study. METHODS: Twenty-one patients (aged 67+/-11 years, nine female and 12 male) with severely impaired renal function [mean serum creatinine 3.2+/-1.3 mg/dl, mean glomerular filtration rate (GFR) 31+/-16 ml/min/1.73 m(2)] who needed to have angiography because of severe peripheral vascular disease, renal artery stenosis or aortic aneurysms were randomized to receive in a blinded manner either gadobutrol (Gadovist 1.0 mmol/ml) or iohexol (Omnipaque 350) as contrast agents. GFR was measured by CM clearance (Renalyzer) at baseline and 48 h after CM administration. The primary end point was the mean change of GFR from baseline at 48 h, the secondary one the incidence of CM-induced acute renal failure, defined as a decrease in GFR of >50% from baseline within 48 h of CM administration. RESULTS: In the gadobutrol group (n = 10) we observed a statistically significant decrease in GFR of 10.6+/-13.8 ml/min/1.73 m(2) within 48 h after CM administration (P<0.05, paired t test). The incidence of CM-induced ARF amounted to 50%. In comparison, the iohexol group (n = 11) also showed a statistically significant GFR reduction of 8.7+/-8.8 ml/min/1.73 m(2) (P<0.05, paired t test), and of ARF by 45%. The percentile of differences of GFR decreases between the two groups was not significant (P = 0.70). No patient demonstrated other adverse effects of gadobutrol or iohexol administration, apart from GFR reduction. Despite the decline in GFR, no patient required haemodialysis in the 10 following days. CONCLUSIONS: In our study, gadolinium-based angiography showed no benefit over iohexol angiography with respect to preventing GFR reduction in patients with severely impaired renal function.
Subject(s)
Angiography, Digital Subtraction , Contrast Media , Iohexol , Organometallic Compounds , Renal Insufficiency/complications , Uremia/diagnostic imaging , Uremia/etiology , Aged , Aortic Aneurysm/diagnostic imaging , Contrast Media/adverse effects , Double-Blind Method , Female , Gadolinium/adverse effects , Glomerular Filtration Rate/drug effects , Humans , Iohexol/adverse effects , Male , Middle Aged , Organometallic Compounds/adverse effects , Pilot Projects , Renal Artery Obstruction/diagnostic imaging , Renal Insufficiency/physiopathology , Severity of Illness Index , Vascular Diseases/diagnostic imagingSubject(s)
Splenic Infarction/diagnosis , Adult , Female , Humans , Meningococcal Infections/complications , Meningococcal Infections/diagnosis , Neisseria meningitidis/isolation & purification , Sepsis/complications , Sepsis/diagnosis , Splenic Infarction/etiology , Splenic Infarction/microbiology , Tomography, X-Ray ComputedABSTRACT
OBJECTIVE: Angiotensin-converting enzyme inhibitors (ACEI) show an antiproteinuric and thus nephroprotective effect in patients suffering from glomerulonephritis. Angiotensin II-receptor-antagonists (AT1RA) are also efficacious in reducing proteinuria. The study was performed to investigate the antiproteinuric effect of AT1RA candesartan in patients diagnosed with chronic glomerulonephritis by biopsy, and who were already being treated with an ACEI. METHODS: A total of 12 patients with a persistent proteinuria of at least 1 g/day who were already being treated with an ACEI for more than 3 months were included. The study was performed using a double-blind, placebo-controlled and randomized method with two treatment periods of 8 weeks (placebo or candesartan 8 mg/day) and a wash-out period of 4 weeks in between. Glomerular filtration rate (GFR) and effective renal plasma flow (ERPF) were measured by inulin- and PAH-clearances at the beginning and the end of each treatment period. RESULTS: Proteinuria significantly decreased from 2 +/- 0.4 g/day to 1.3 +/- 0.3 g/day (P < 0.05) with the addition of candesartan treatment, whereas it remained unchanged (from 1.8 +/- 0.3 g/day to 1.9 +/- 0.3 g/day) under placebo. GFR (candesartan: from 66 +/- 13 to 58 +/- 11 ml/min per 1.73 m2, placebo: from 64 +/- 11 to 62 +/- 13 ml/min per 1.73 m2) and ERPF (candesartan: from 329 +/- 44 to 304 +/- 37 ml/min per 1.73 m2, placebo: from 362 +/- 48 to 315 +/- 46 ml/min per 1.73 m2) did not alter significantly after 8 weeks of treatment. The addition of candesartan treatment significantly reduced systolic blood pressure (from 129 +/- 3 to 123 +/- 2 mmHg, P < 0.05) and diastolic blood pressure (from 79 +/- 2 to 76 +/- 2 mmHg, P < 0.05) compared with placebo (systolic: 128 +/- 3 to 127 +/- 3 mmHg, diastolic: 79 +/- 2 to 79 +/- 2 mmHg). CONCLUSION: Candesartan promotes a complementary antiproteinuric and a small antihypertensive effect after a treatment period of 8 weeks in patients with chronic glomerulonephritis when given in conjunction with an ACEI. Renal hemodynamics did not vary significantly.
Subject(s)
Angiotensin-Converting Enzyme Inhibitors/administration & dosage , Antihypertensive Agents/administration & dosage , Benzimidazoles/administration & dosage , Glomerulonephritis/drug therapy , Proteinuria/drug therapy , Tetrazoles/administration & dosage , Adult , Aged , Angiotensin Receptor Antagonists , Biphenyl Compounds , Blood Pressure/drug effects , Double-Blind Method , Drug Synergism , Female , Glomerular Filtration Rate/drug effects , Glomerulonephritis/physiopathology , Humans , Male , Middle Aged , Proteinuria/physiopathology , Receptor, Angiotensin, Type 1 , Renal Plasma Flow, Effective/drug effectsABSTRACT
BACKGROUND: Nitric oxide (NO) plays an important role in the regulation of blood pressure and renal hemodynamics. METHODS: To further investigate the role of NO in human hypertension, we studied the effect of systemic injection of N(G)-monomethyl-L-arginine (L-NMMA) on renal hemodynamics, urinary sodium excretion (FE(Na)), systemic hemodynamics and several vasoactive hormones in 5 healthy male subjects with (group H) and without (group N) family history of hypertension. An intravenous infusion of L-NMMA (3 mg/kg over 10 min) or placebo was given in a randomized, double-blinded manner. GFR and ERPF were measured by inulin- and PAH-clearances. Norepinephrine infusion (0.1 microg/kg/min over 60 min) served as vasoconstrictive control infusion. RESULTS: L-NMMA induced a significant decrease in ERPF (-135 +/- 49 vs. 7 +/- 31 ml/min/1.73 m(2) with placebo, p < 0.05), a decrease in FE(Na) (-1.2 +/- 0.6% with L-NMMA vs. 0.0 +/- 0.1% with placebo), and a significant increase in diastolic blood pressure (+7 +/- 1 vs. -2 +/- 1 mm Hg with placebo) in group N, only. A sustained drop in plasma renin activity (-0.1 +/- 0.1 vs. 0.3 +/- 0.1 ng/ml/h with placebo) could also be seen in this group, only. Subjects with family history of hypertension showed minor or even no response (changes in diastolic blood pressure: L-NMMA: 5 +/- 3 mm Hg, placebo: 0 +/- 2 mm Hg; changes in ERPF: L-NMMA: -89 +/- 57 ml/min/1.73 m(2), placebo: -34 +/- 28 ml/min/1.73 m(2); changes in plasma renin activity: L-NMMA: -0.0 +/- 0.3 ng/ml/h, placebo: -0.1 +/- 0.2 ng/ml/h). The vasoconstrictive effect of norepinephrine infusion did not differ between both groups. CONCLUSION: Our data indicate that systemic NO synthetase inhibition by L-NMMA results in a blunted effect on systemic blood pressure and the renal hemodynamic system in subjects with family history of hypertension.
