Ostensible Day-Night Difference of QT Prolongation During Long-Term Treatment with Antiarrhythmic Drugs: Reappraisal of the Law of "Regression to the Mean"

1998 ◽  
Vol 32 (1) ◽  
pp. 62-65 ◽  
Author(s):  
Yuji Murakawa ◽  
Takeshi Yamashita ◽  
Kohsuke Ajiki ◽  
Kazunori Sezaki ◽  
Masao Omata
Keyword(s):  
Antiarrhythmic Drugs ◽  
Term Treatment ◽  
Qt Prolongation ◽  
Regression To The Mean ◽  
Long Term Treatment ◽  
The Mean ◽  
The Law

scholarly journals The Effects of Long-Term Administration of Sodium Nedocromil on Bronchial Hypereactivity

2003 ◽  
Vol 1 (3) ◽  
pp. 119-123 ◽  
Author(s):  
G. Ilonidis ◽  
G. Anogianakis ◽  
CH. Trakatelli ◽  
A. Anogeianaki ◽  
M. Chomatidis ◽  
...  
Keyword(s):  
Allergic Asthma ◽  
Term Treatment ◽  
Bronchial Hyperreactivity ◽  
Methacholine Challenge ◽  
Intrinsic Asthma ◽  
Group I ◽  
Long Term Treatment ◽  
The Mean ◽  
Group Ii

The effect of long-term treatment with sodium nedocromil on airway hypereactivity was investigated in two groups of 20 patients each. Group I patients presented with allergic asthma while Group II patients presented with intrinsic asthma. For each subject of the two groups, the base FEV1 was measured and nebulized methacholine was administrated in consecutively higher concentrations until a decrease in FEV1 of >20 % was observed. Following measurement, all patients included in the study were treated with 12 mg of sodium nedocromil per day for 12 months. At the end of the treatment, bronchial hyperreactivity was evaluated for a second time by administering the same dosage of methacholine that originally produced a decline in FEV1 of >20 %. In Group I patients (allergic asthma) mean FEV1 was 3126 ml, before challenge, while after methacholine challenge FEV1 was 2400ml. Following 1-year of sodium nedocromil administration the FEV1 was 2601ml (P<0.05). Before treatment, the mean fall in FEV1, following methacholine challenge, was 23.67% while following a 1-year-long sodium nedocromil administration this value reduced to 15.70% (P<0.05). Correspondingly, PC20 was 5.59 while after sodium nedocromil administration it increased to 11.66 (P<0.05). In Group II patients (intrinsic asthma) mean FEV1 was 2750 ml, before challenge, while after methacholine challenge FEV1 was 2066ml. Following 1-year of sodium nedocromil administration the FEV1 was 2223ml (P<0.05). Before treatment, the mean fall in FEV1, following methacholine challenge, was 27.65 % while following a 1-year-long sodium nedocromil administration this value reduced to 21.92 % (P<0.05). Correspondingly, PC20 was 5.91 while after sodium nedocromil administration it increased to 6.19 (P<0.05). The results suggest a positive effect of long-term sodium nedocromil administration in bronchial hyperreactivity for both groups of patients.

Changes in imatinib plasma trough level during long-term treatment of patients with advanced gastrointestinal stromal tumors.

2011 ◽  
Vol 29 (4_suppl) ◽  
pp. 306-306
Author(s):  
Y. Kang ◽  
C. Yoo ◽  
B. Ryoo ◽  
H. Chang ◽  
J. Lee ◽  
...  
Keyword(s):  
Plasma Level ◽  
Gastrointestinal Stromal Tumors ◽  
Plasma Concentrations ◽  
Term Treatment ◽  
Albumin Concentration ◽  
Stromal Tumors ◽  
Long Term Treatment ◽  
The Mean ◽  
Median Interval

306 Background: Pharmacokinetic study in patients with gastrointestinal stromal tumors (GISTs) suggested that plasma concentrations of imatinib decrease following long-term exposure. We therefore measured changes in imatinib plasma trough levels (Cmin) after long-term exposure. Methods: Between November 2009 and May 2010, follow-up (FU) imatinib Cmin was measured in 65 patients who received the same dose of imatinib for at least 9 months after a previous baseline (BL) measurement. Total 244 blood samples were obtained (127 at BL and 117 at FU) and plasma level was measured by liquid chromatography-tandem mass spectrometry. Results: Median patient age was 54 years (range, 28–76 years) and 42 (64.6%) patients were male. Sixty-one (93.8%) patients were treated with 400 mg/day imatinib and 4 (6.2%) with 300 mg/day. The median interval from initiation of imatinib to BL test was 6.4 months (range, 0.5–66.6 months), and the median interval between BL and FU test was 13.1 months (range, 9.6–18.4 months). The mean ± standard deviation imatinib Cmin was significantly higher at FU than at BL (1442 ± 693 ng/mL vs 1221 ± 624 ng/mL, p<0.001). The mean inter- and intra-subject variabilities were 49.2% and 25.5%, respectively, at BL, and 44.2% and 20.4%, respectively, at FU. Multivariate analysis showed a significant correlation between the ratio of FU to BL imatinib Cmin and that of albumin (r=-0.397, p=0.001). In per-sample analysis, imatinib Cmin was significantly correlated with age, hemoglobin, albumin, creatinine clearance, previous major gastrectomy and time between initiation of imatinib and plasma level tests. Conclusions: Steady-state imatinib Cmin did not decrease but remained stable in most GIST patients during long-term treatment. Changes in imatinib Cmin were associated with changes in albumin concentration. Monitoring of imatinib Cmin only for concerns about time-dependent decreases in imatinib exposure is not necessary. [Table: see text]

Effects of methylthiouracil treatment on the growth and moult of cashmere fibre in goats

1996 ◽  
Vol 62 (3) ◽  
pp. 513-520 ◽  
Author(s):  
S. M. Rhind ◽  
S. R. McMillen
Keyword(s):  
Fibre Diameter ◽  
Live Weight ◽  
Term Treatment ◽  
Hair Follicles ◽  
Long Term Treatment ◽  
Fibre Growth ◽  
The Mean ◽  
Secondary Fibre

AbstractThe effect of long-term treatment of goats with methylthiouracil on the timing, amount and quality of secondary fibre (cashmere) growth and timing of cashmere moult in goats was investigated. From early June, groups of 10 Icelandic × Scottish feral goats were dosed orally each day, for a 15-month period, with 5 mg methylthiouracil per kg live weight in 30 ml water (treated; T) or with water only (control; C). Treatment with methylthiouracil resulted in a significant reduction (P < 0·05) in the proportion of active secondary hair follicles present during March. This was associated with a delayed onset of moult of cashmere in T compared with C goats at both the head (11 March v. 23 February; s.e. 3·33 days; P< 0·05) and mid side (27 March v. 26 February; s.e. 3·58 days; P < 0·001). There was no effect on the time of onset (C, 19 July; T, 19 July; s.e. 5·84 days) or cessation of cashmere fibre growth (C, 9 December; T, 8 December; s.e. 1·69 days) or the mean growth rate (C, 0·473 mm/day; T, 0·451 mm/day; s.e. 0·025) and fibre diameter (C, 16·9 μm; T, 15·4 jim; s.e. 0·266). Wlien present in the fleece, the mean weight and proportion of cashmere was higher in C than in T goats (P < 0·05). It is concluded that methylthiouracil treatment altered secondary follicle activity and the time of onset of the moult of cashmere and that these changes may be a result of reduced triiodothyronine production from thyroxine and associated secondary changes in profiles of insulin and IGF-1.

BIOCHEMICAL, VIROLOGICAL AND THE FIBROSIS RESPONSES TO TENOFOVIR DISOPROXIL FUMARATE IN PATIENTS WITH HBV-RELATED COMPENSATED CIRRHOSIS

2016 ◽  
pp. 14-18
Author(s):  
Van Huy Tran ◽  
Phuoc Bao Quan Nguyen
Keyword(s):  
Tenofovir Disoproxil Fumarate ◽  
Acoustic Radiation ◽  
Term Treatment ◽  
Remarkable Improvement ◽  
Compensated Cirrhosis ◽  
Long Term Treatment ◽  
Tenofovir Df ◽  
Cirrhotic Patients ◽  
The Mean

Background: Preliminary studies showed anti HBV nucleoside analogues treatment might improve the histopathology and improve the survival of the cirrhotic patients. Data about efficacy of anti-HBV treatment in Vietnamese cirrhotic patients was still very limited. This study was aimed at assessing the biochemical, virological and the fibrosis responses to Tenofovir disoproxil fumarate (Tenofovir DF) in patients with HBVrelated compensated cirrhosis. Patients and methods: 48 patients of HBV-related compensated cirrhosis, diagnosed by Acoustic radiation Forced Imaging (ARFI), were enrolled. Tenofovir DF was given at dose of 300 mg per day, followed in 24 months. Results: ALT normalization and HBV DNA responses were found in 91.7% and 87.5%, respectively, of all patients. The mean of SWV was significantly improved after 24 months, from 2.16 ± 0.28 m/s down to 1.80± 0.22 m/s after 24 months of tenofovir treatment. Especially, 15 patients (31.2%) have obtained a remarkable improvement of fibrosis from F4 down to F3 or even F2. Conclusion: Tenofovir treatment in patients with HBV- related compensated cirrhosis may provide not only biochemical and virological responses but also improves in liver fibrosis, especially after long-term treatment. Key words: HBV, Tenofovir disoproxil fumarate, compensated cirrhosis, ARFI

High-dose desvenlafaxine in outpatients with major depressive disorder

CNS Spectrums ◽  
2012 ◽  
Vol 17 (3) ◽  
pp. 121-130 ◽  
Author(s):  
James M. Ferguson ◽  
Karen A. Tourian ◽  
Gregory R. Rosas
Keyword(s):  
Major Depressive Disorder ◽  
Adverse Events ◽  
Depressive Disorder ◽  
Dose Range ◽  
Term Treatment ◽  
High Dose ◽  
Major Depressive ◽  
Long Term Treatment ◽  
The Mean

ObjectiveThis study investigated the safety and efficacy of long-term treatment with high-dose desvenlafaxine (administered as desvenlafaxine succinate) in major depressive disorder (MDD).MethodsIn this multicenter, open-label study, adult outpatients with MDD aged 18–75 were treated with flexible doses of desvenlafaxine (200–400 mg/d) for ≤ 1 year. Safety assessments included monitoring of treatment-emergent adverse events (TEAEs), patient discontinuations due to adverse events, electrocardiograms, vital signs, and laboratory determinations. The primary efficacy measure was mean change from baseline in the 17-item Hamilton Rating Scale for Depression [HAM-D(17)] total score.ResultsThe mean daily desvenlafaxine dose range over the duration of the trial was 267–356 mg (after titration). The most frequent TEAEs in the safety population (n = 104) were nausea (52%) and headache (41%), dizziness (31%), insomnia (29%), and dry mouth (27%). All TEAEs were mild or moderate in severity. Thirty-four (33%) patients discontinued from the study because of TEAEs; nausea (12%) and dizziness (9%) were the most frequently cited reasons. The mean change in HAM-D(17) total score for the intent-to-treat population (n = 99) was −9.9 at the last on-therapy visit in the last-observation-carried-forward analysis and −14.0 at month 12 in the observed cases analysis.ConclusionHigh-dose desvenlafaxine (200–400 mg/d) was generally safe and effective in the long-term treatment of MDD.

Intravitreal bevacizumab monotherapy in myopic choroidal neovascularisation: 5-year outcomes for the PAN-American Collaborative Retina Study Group

2017 ◽  
Vol 102 (4) ◽  
pp. 455-459 ◽  
Author(s):  
Jay Chhablani ◽  
Remya Mareen Paulose ◽  
Andres F Lasave ◽  
Lihteh Wu ◽  
Cristian Carpentier ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Adverse Events ◽  
Real Life ◽  
Intravitreal Bevacizumab ◽  
Term Treatment ◽  
Choroidal Neovascularisation ◽  
Long Term Treatment ◽  
The Mean

PurposeTo report the long-term anatomical and visual outcomes of intravitreal bevacizumab (IVB) monotherapy in naive choroidal neovascularisation (CNV) caused by myopia.MethodsRetrospective analysis of naive CNV secondary to myopia that underwent antivascular endothelial growth factor monotherapy was performed. Collected data included demographic details, clinical examination details including visual acuity at presentation and follow-up with imaging and treatment details. Main outcome measures were resolution of CNV activity at the last visit. Secondary outcomes included change in visual acuity, number of injections and adverse events.ResultsThirty-three eyes of 31 subjects with a mean age of 51.48±16.4 years were included. The mean follow-up was 66.47 months. 27 eyes had type 2 CNV and the rest seven eyes had type 1 CNV. The mean number of IVB injections per eye was 4.9. Mean visual acuity at baseline reduced from 0.65±0.33 logMAR units (Snellen equivalent=20/89) to 0.73±0.50 logMAR units (20/107) at final follow-up (p=0.003). The mean central macular thickness decreased from 309.31±86 µm at baseline to 267.5±70.89 µm at the last visit (p=0.03). However, visual acuity was maintained (±1 line of baseline) in 13 eyes (39.4%), ≥2 line improvement in nine (27.3%) eyes and more than two lines worsening in 11 eyes (33.3%). Foveal atrophy was observed at baseline and last visit in 6 (12.5%) and 14 (29.1%), respectively (p=0.007). No systemic adverse events were observed.ConclusionIVB monotherapy is safe and effective for long-term treatment of CNV secondary to myopia in real life.

scholarly journals A Clinical Study of Direct Composite Full-Coverage Crowns: Long-Term Results

2012 ◽  
Vol 37 (4) ◽  
pp. 432-441 ◽  
Author(s):  
V Alonso ◽  
M Caserio
Keyword(s):  
Public Health Service ◽  
Term Treatment ◽  
Long Term Results ◽  
Full Coverage ◽  
Acceptable Range ◽  
Long Term Treatment ◽  
Usphs Criteria ◽  
The Mean ◽  
Strip Crown

SUMMARY Objective Long-term assessment of the clinical behavior of direct composite full-coverage crowns using transparent strip crowns as a matrix. Method A retrospective observational study without controls of 21 restorations was performed: nine teeth with hypoplasia, six conoid teeth, and six with microdontia. The mean patient age was 22.5 ± 8.2 years. The clinical procedure consisted of cleaning the tooth, acid etching and application of adhesive, after which a transparent strip crown was filled with composite and placed on the tooth. The gingival contour was polished using multifluted burs and interproximal spaces polished with polishing strips. Patients were examined after a period of 12.5 (±4.6) years by two observers who recorded the plaque index and evaluated the restorations in accordance with the modified U. S. Public Health Service (USPHS) criteria. Results Except for one case, all the scores obtained on the basis of the USPHS criteria were within the acceptable range. There were no cases of secondary caries. The statistically significant variations were anatomical form, marginal adaptation, marginal discolouration, and surface roughness. Discussion This technique is simple and noninvasive. It is a viable long-term treatment option for teeth with amelogenesis or microdonts and is especially suitable for patients still undergoing growth.

Variability of INR in patients on stable long-term treatment with phenprocoumon and acenocoumarol and implications for analytical quality requirements

2009 ◽  
Vol 102 (09) ◽  
pp. 588-592 ◽  
Author(s):  
Johanna H. H. van Geest-Daalderop ◽  
Nathalie C. V. Péquériaux ◽  
Anton M. H. P. van den Besselaar
Keyword(s):  
Term Treatment ◽  
Biological Variation ◽  
Vitamin K Antagonist ◽  
Analytical Quality ◽  
Performance Goal ◽  
Quality Requirements ◽  
Long Term Treatment ◽  
Target Intensity ◽  
The Mean

SummaryWithin each patient treated with vitamin K antagonist (VKA), variation of the international normalised ratio (INR) occurs over the treatment period. The purpose of the present study was to assess INR variation in selected patients on long-term treatment in whom the dose of VKA was not changed.This type of variation is considered as “biological variation” which is caused by many factors but not VKA dose changes or other medication. Four groups of long-term patients were examined: each group with a different VKA (acenocoumarol or phenprocoumon) or a different target intensity (INR 2.0–3.5 or 2.5–4.0). All patients were monitored with the same PT system (Hepato Quick, STA-R Evolution coagulation instrument) by one laboratory.The variation of the INR within each patient was expressed as coefficient of variation (CV, in %).The CV was corrected for the average imprecision of the INR measurement (CV, 2.4%). The mean corrected CV values for the four groups were: 10.9% (acenocoumarol, target INR 2.0–3.5); 10.5% (acenocoumarol, target INR 2.5–4.0); 10.4% (phenprocoumon, target INR 2.0–3.5); 9.1% (phenprocoumon, target INR 2.5–4.0). The analytical performance goal for the INR measurement (imprecision) can be derived from the within-subject biological variation. Desirable INR imprecision goals are <4.9% and <5.3% CV for monitoring of phenprocoumon and acenocoumarol, respectively. These goals were achieved using the aforesaid PT system.

scholarly journals Flow-diverting devices in the treatment of unruptured ophthalmic segment aneurysms at a mean clinical follow-up of 5 years

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Przemysław Kunert ◽  
Katarzyna Wójtowicz ◽  
Jarosław Żyłkowski ◽  
Maciej Jaworski ◽  
Daniel Rabczenko ◽  
...  
Keyword(s):  
Aneurysm Rupture ◽  
Term Treatment ◽  
Long Term Treatment ◽  
Therapeutic Procedures ◽  
Endovascular Methods ◽  
The Mean ◽  
Ophthalmic Segment Aneurysms ◽  
Annual Risk

AbstractA shift toward the endovascular treatment of ophthalmic segment aneurysms is noticeable. However, it is not clear if the long-term treatment results improve with the development of endovascular methods. The aim of this study was to present the outcomes of the treatment of unruptured ophthalmic aneurysms using flow diverting devices (FDD) with or without coiling. This retrospective study included 52 patients with 65 UIAs treated in 2009–2016. The mean aneurysm size was 8.8 mm. Eight aneurysms were symptomatic. Therapeutic procedures included: 5 failed attempts, 55 first sessions with FDD deployment (bilateral procedures in 3) and 3 retreatment procedures. To cover 55 ICAs, 25 Silk, 26 Pipeline, 9 Fred and 1 Surpass FDD were used. FDD with coiling was applied in 19(29.2%), mainly for symptomatic and larger aneurysms. Mean radiological and clinical follow-up was 12 and 61 months, respectively. Postprocedural deterioration was noted in 3(5.8%) patients, but in long-term the modified Rankin Scale grades 0–2 were achieved in 98.1% of patients. One patient died from the treated aneurysm rupture (annual risk—0.07%). Raymond–Roy occlusion classification class I or II was achieved in 98.5% in the long term, with similar results in both groups. Complications occurred in 40.4% of patients and the most frequent were: imperfect FDD deployment (15%), failed attempt of FDD deployment (9.6%) and late FDD stenosis (9.6%). Flow-diverting devices, with additional coiling in selected cases, may offer a very high proportion of satisfactory outcomes. However, in our experience the high risk of complications remains.

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