Chronic atrial fibrillation— epidemiologic features and 14 year follow-up: A case control study

1987 ◽  
Vol 8 (5) ◽  
pp. 521-527 ◽  
Author(s):  
P. T. ÖNUNDARSON ◽  
G. THORGEIRSSON ◽  
E. JONMUNDSSON ◽  
N. SIGFUSSON ◽  
Th. HARDARSON
Keyword(s):  
Atrial Fibrillation ◽  
Case Control Study ◽  
Chronic Atrial Fibrillation ◽  
Case Control ◽  
Epidemiologic Features ◽  
Control Study

Magnetic resonance-guided re-ablation for atrial fibrillation is associated with a lower recurrence rate: a case–control study

EP Europace ◽  
2020 ◽  
Vol 22 (12) ◽  
pp. 1805-1811
Author(s):  
Levio Quinto ◽  
Jenniffer Cozzari ◽  
Eva Benito ◽  
Francisco Alarcón ◽  
Felipe Bisbal ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Magnetic Resonance ◽  
Case Control Study ◽  
Cox Regression ◽  
Three Dimensional ◽  
Case Control ◽  
Conventional Group ◽  
3D Navigation ◽  
Control Study

Abstract Aims Our aim was to analyse whether using delayed enhancement cardiac magnetic resonance imaging (DE-CMR) to localize veno-atrial gaps in atrial fibrillation (AF) redo ablation procedures improves outcomes during follow-up. Methods and results We conducted a case–control study with 35 consecutive patients undergoing a DE-CMR-guided Repeat-pulmonary vein isolation (Re-PVI) procedure. Those with more extensive ablations (e.g. roof lines, box) were excluded. Patients were matched for age, sex, AF pattern, and left atrial dimension with 35 patients who had undergone a conventional Re-PVI procedure guided with a three dimensional (3D)-navigation system. Procedural characteristics were recorded, and patients were followed for 24 months in a specialized outpatient clinic. The primary endpoint was freedom from recurrent AF, atrial tachycardia, or flutter. The duration of CMR-guided procedures was shorter compared to the conventional group (161 ± 52 vs. 195 ± 72 min, respectively, P = 0.049), with no significant differences in fluoroscopy or total radiofrequency time. At the 2-year follow-up, more patients in the DE-CMR-guided group remained free from recurrences compared with the conventional group (70% vs. 39%, respectively, P = 0.007). In univariate Cox-regression analyses, AF pattern [persistent AF, hazard ratio (HR) 2.66 (1.27–5.46), P = 0.006] and the use of DE-CMR [HR 0.36 (0.17–0.79), P = 0.009] predicted recurrences during follow-up; both factors remained independent predictors in multivariate analyses. Conclusion The substrate characterization provided by DE-CMR facilitates the identification of anatomical veno-atrial gaps and associates with shorter procedures and better clinical outcomes in repeated AF ablation procedures.

P wave analysis with wavelets identifies hypertensive patients at risk of recurrence of atrial fibrillation: A case–control study and 1year follow-up

2015 ◽  
Vol 48 (5) ◽  
pp. 845-852 ◽  
Author(s):  
George Dakos ◽  
Dimitrios Konstantinou ◽  
Yiannis S. Chatzizisis ◽  
Ioanna Chouvarda ◽  
Dimitrios Filos ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Case Control Study ◽  
Case Control ◽  
P Wave ◽  
Wave Analysis ◽  
Hypertensive Patients ◽  
Risk Of Recurrence ◽  
Patients At Risk ◽  
Control Study

scholarly journals New-onset postoperative atrial fibrillation is associated with worse long-term outcome in critically ill patients after non-cardiac surgery: 3-year follow-up of a case-control study

2019 ◽  
Author(s):  
Min Xie ◽  
Shuang-Ling Li ◽  
Jia-Xin Pan ◽  
Sai-Nan Zhu ◽  
Dong-Xin Wang
Keyword(s):  
Atrial Fibrillation ◽  
Cardiac Surgery ◽  
Case Control Study ◽  
Case Control ◽  
Control Group ◽  
Long Term Outcomes ◽  
Control Study ◽  
New Onset

Abstract Background The impact of new-onset postoperative atrial fibrillation (POAF) on long-term outcomes of patients after non-cardiac surgery remains controversial. Here we report the 3-year follow-up of a previous case-control study to determine the relationship between new-onset POAF and long-term outcomes in patients after non-cardiac surgery. Methods In a previous case-control study, 213 patients who were admitted to the intensive care unit (ICU) after non-cardiac surgery were included; of them 71 were in the POAF group and 142 the control group. A telephone interview was performed with patients or their family members at 3 years after surgery. The primary endpoint was the incidence of major adverse cardiovascular events (MACEs) within 3 years, including cardiovascular death, non-fatal cardiac arrest, acute myocardial infarction, congestive heart failure, and ischemic stroke. A logistic regression model was established to assess the association between the occurrence of new-onset POAF and the development of 3-year MACEs. Results 202 patients completed the 3-year follow-up and were included in the analysis; of them 68 were in the POAF group and 134 were in the control group. The incidence of 3-year MACEs was higher in the POAF group than in the control group (64.7% [44/68] vs. 23.1% [31/134], p<0.001). After correction for confounding factors, new-onset POAF was independently associated with an increased risk of 3-year MACEs (odds ratio 5.448, 95% confidence interval 2.202-13.481, p<0.001). Conclusions For adult patients admitted to the ICU after non-cardiac surgery, new-onset POAF was an independent risk factor for the development of MACEs within 3 years.

scholarly journals Determinants of short birth interval among women in South Gondar, Ethiopia: community-based unmatched case-control study

2021 ◽  
Vol 79 (1) ◽  
Author(s):  
Gedefaye Nibret Mihretie ◽  
Fentahun Yenealem Beyene ◽  
Bekalu Getnet Kassa ◽  
Alemu Degu Ayele ◽  
Tewachew Muche Liyeh ◽  
...  
Keyword(s):  
Antenatal Care ◽  
Birth Interval ◽  
Case Control Study ◽  
Birth Spacing ◽  
Case Control ◽  
Community Based ◽  
Short Birth Interval ◽  
South Gondar ◽  
Control Study

Abstract Background The effect of short birth interval on socio-economic, negative maternal and child health outcomes remains common in developing countries. This study aimed to assess determinants of short birth interval among reproductive age women, who gave birth in health institution for last six-month in South Gondar, Ethiopia 2019. Methods Community-based unmatched case control study design was conducted from February 1 to March 30, 2019. Sample size of 150 was included by simple random sampling technique. The data was collected by semi-structured and pre-tested face to face interviewer-administered questionnaire from selected respondent. The collected data was entered with Epi-Data version 3.1 and analyzed by using SPSS version 23 software. Bivariate and multivariable analyses were used to examine the association. Odds ratio, 95% CI and P-value < 0.05 were used to determine the statistical association. Result The mean age of the respondents was 32.42 (SD ± 5.14) and 35.12 (SD ± 5.86) for cases and controls, respectively. Mothers not used contraceptives (AOR = 6.29, 95% CI (1.95, 20.24)), participants who had ≤2 alive children (AOR = 5.57, 95% CI (1.47, 21.13)), mothers who breast fed less than 24 months (AOR = 3.42, 95% CI (1.38, 8.46)), husband decision on contraceptives utilization (AOR = 2.69,95% CI (1.05,6.88)) and mothers who did not have history of antenatal care follow up (AOR = 3.52, 95% CI (1.27, 9.75)) were associated with short birth interval. Conclusion The optimum birth spacing plays a vital role in decreasing fertility and the morbidity and mortality of mothers and children. Thus, providing health information on the benefit of breast feeding, follow-up of antenatal care during pregnancy, use of contraceptives after delivery and encouraging mothers to make decisions about their own health and use of contraceptives to optimize birth spacing for rural communities.

scholarly journals Laminoplasty with selective fusion at unstable segment versus laminectomy with fusion for multilevel cervical myelopathy: a case‐control study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Lin Du ◽  
Yanzheng Gao ◽  
Changqing Zhao ◽  
Tangjun Zhou ◽  
Haijun Tian ◽  
...  
Keyword(s):  
Symptom Severity ◽  
Cervical Myelopathy ◽  
Case Control Study ◽  
Case Control ◽  
Axial Symptom ◽  
Segmental Instability ◽  
Neurologic Status ◽  
Multilevel Cervical Myelopathy ◽  
Control Study

Abstract Background Segmental cervical instability is a risk factor for the progression of osteophytic bone spurs and development of myelopathy, and is treated as a relative contraindication of cervical laminoplasty. The aim of this study was to compare laminoplasty with selective fixation (LPSF) versus laminectomy with fusion (LCF) in patients with multilevel cervical myelopathy accompanied by segmental instability. Methods A case-control study was conducted by reviewing data from 63 patients who underwent LPSF (n = 30) or LCF (n = 33). Cervical alignment, range of motion (ROM), neurologic status and axial symptom severity pre-operation, 3-days after operation, and at the final follow-up (minimum 24 months) were measured and compared between groups. Results Postoperation, patients in the LPSF group lost 31.1 ± 17.3 % of cervical lordosis and 43.2 ± 10.9 % cervical ROM while patients in the LCF group lost 5.7 ± 8.2 % and 67.9 ± 15.5 %, respectively. Both LPSF and LCF groups significantly improved neurologic status and axial symptom severity at the final follow-up with similar between-group results(P > 0.05). Blood loss, operation time, hospital stay, and medical cost in the LPSF group were significantly less than in the LCF group(P < 0.05). Conclusions In 2 years of clinical observation, LPSF was effective in maintaining the stability of the cervical spine with less sacrifice of mobility and surgical trauma for multilevel myelopathy with segmental instability compared to LCF.

Gastric cellular turnover and the development of atrophy after 31 years of follow-up: a case-control study

1999 ◽  
Vol 94 (8) ◽  
pp. 2109-2114 ◽  
Author(s):  
S. F. Moss ◽  
J. Valle ◽  
A. M. Abdalla ◽  
S. Wang ◽  
M. Siurala ◽  
...  
Keyword(s):  
Case Control Study ◽  
Case Control ◽  
Cellular Turnover ◽  
Control Study
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