scholarly journals A retrospective cohort study evaluating the success rates of Nobel Biocare zygomatic implants which had machine and TiUnite™ surface finishes placed by three specialist practitioners over an 18-year period

2017 ◽  
Vol 28 ◽  
pp. 142-142
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Success Rates ◽  
Surface Finishes ◽  
Zygomatic Implants

scholarly journals Comparison of three video laryngoscopes and direct laryngoscopy for emergency endotracheal intubation: a retrospective cohort study

BMJ Open ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. e024927 ◽  
Author(s):  
Kei Suzuki ◽  
Shinji Kusunoki ◽  
Koichi Tanigawa ◽  
Nobuaki Shime
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Macintosh Laryngoscope ◽  
Success Rates ◽  
Exact Test ◽  
Fisher's Exact Test ◽  
Intubation Success ◽  
Fisher’S Exact Test ◽  
First Pass

ObjectiveVideo laryngoscopes are used for managing difficult airways. This study compared three video laryngoscopes’ (Pentax-Airway Scope [Pentax], King Vision[King] and McGrath MAC [McGrath]) performances with the Macintosh direct laryngoscope (Macintosh) as emergency tracheal intubations (TIs) reference.DesignRetrospective cohort study.SettingThe emergency department (ED) and the intensive care unit (ICU) of two Japanese tertiary-level hospitals.ParticipantsAll consecutive video-recorded emergency TI cases in EDs and ICUs between December 2013 and June 2015.Primary outcome measuresThe primary study endpoint was first-pass intubation success. A subgroup analysis examined the first-pass intubation success of expert versus non-expert operators. A logistic regression analysis was performed to identify the predictors of first-pass intubation success.ResultsA total of 287 emergency TIs were included. The first-pass intubation success rates were 78%, 58%, 78% and 58% for the Pentax, King, McGrath and Macintosh instruments, respectively (p=0.004, Fisher’s exact test). The non-expert operators’ success rates were significantly higher (p=0.00004, Fisher’s exact test) for the Pentax (87%) and McGrath (78%) instruments than that for the King (50%) and Macintosh (46%) instruments, unlike that of the experts (67%, 67%, 78% and 78% for Pentax, McGrath, King and Macintosh, respectively; p=0.556, Fisher’s exact test). After TI indication, difficult airway characteristics, and expert versus non-expert operator parameters adjustments, the Pentax (OR=3.422, 95% CI 1.551 to 7.550; p=0.002) and McGrath (OR= 3.758, CI 1.640 to 8.612; p=0.002) instruments showed significantly higher first-pass intubation success odds when compared with the Macintosh laryngoscope (reference, OR=1). The King instrument, however, (OR=1.056; 95% CI 0.487 to 2.289, p=0.889) failed to show any significant superiority.ConclusionThe Pentax and McGrath laryngoscopes showed significantly higher emergency TI first-pass intubation success rates than the King laryngoscope when compared with the Macintosh laryngoscope, especially for non-expert operators.Trial registration numberUMIN000027925; Results.

scholarly journals Evaluation of the surgical and prosthetic success of All-on-4 restorations: a retrospective cohort study of provisional vs. definitive immediate restorations

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Michael Korsch ◽  
Winfried Walther ◽  
Matthias Hannig ◽  
Andreas Bartols
Keyword(s):  
Cohort Study ◽  
Survival Rate ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Complication Rates ◽  
Success Rates ◽  
Posterior Maxilla ◽  
Male Patients ◽  
Provisional Restoration ◽  
Observation Period

Abstract Background All-on-4 concept allows an immediate restoration, which is frequently a provisional restoration (PR), and will be replaced by a definitive restoration (DR) a few months later. However, this approach involves much higher treatment efforts and costs, compared to a DR immediately after implantation. PRs were mostly incorporated in the introductory phase of the All-on-4 concept in our respective clinics. Today, PRs are only used for referred patients and bimaxillary restorations. The aim of the study was to investigate whether PRs and DRs have comparable success rates. Methods A total of 126 patients with 136 All-on-4 restorations supported by 544 implants were included in this retrospective cohort study. The observation period was 1 year. In 42 cases, a PR was placed initially and replaced by a DR 3 months later. In 94 cases, a DR was placed immediately. Biological, technical, and severe (loss of an implant or PR/DR) complications associated with PRs and DRs were compared. The absence of a serious complication was considered a success. Results A total of 27 patients were affected by 33 complications, 19 biological (2 PR and 17 DR) and 14 technical (6 in PR and 8 in DR) in the first 3 months. Eight patients had ten severe complications (1 PR and 9 DR). Severe complications were all implant losses. Implant survival rate was 98.2% (99.4% PR and 97.6 DR), and restoration survival rate was 94.4% (97.6% PR and 92.6% DR). Six out of the ten implant losses occurred in the posterior maxillae of male patients. After 3 months, ten complications occurred in six patients within 1 year. One of these complications was an implant loss in the posterior maxillae of a male patient. Conclusion PRs and DRs showed comparable complication rates during the observation period. Only in male patients did implant losses occur more frequently in the posterior maxilla.

scholarly journals Outcome and predictors of surgical repair of obstetric vesicovaginal fistula in a teaching hospital in ethiopia: retrospective cohort study

2018 ◽  
Vol 13 (2) ◽  
Author(s):  
Demisew Amenu ◽  
Ahadu Workineh ◽  
Desta Hika
Keyword(s):  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Vesicovaginal Fistula ◽  
Surgical Repair ◽  
Obstetric Fistula ◽  
Success Rates ◽  
Fistula Repair ◽  
Obstructed Labor ◽  
Cohort Study Design

Aims: To determine outcomes of obstetric fistula repair and predictors of outcomes among patients with obstetric vesicovaginal fistula. Methods: A Hospital based Retrospective Cohort study design was conducted on all patients with Obstetric vesicovaginal Fistula, who were admitted to Gynecology ward, and had surgical repair from January 2011 to December 2014. Data was collected from patients’ chart, operation logbook and discharge logbook which were filled up from the entry of the patient to the hospital till her discharge. At discharge, a dye test was done to determine the outcome of repair. Results: 168 patients with obstetric vesicovaginal fistula were repaired during the study period. The age of the women ranged from 12 to 45 years with mean of 25 (± 6) years. Eighty percent of patients were laboring for two or more days, 46.4% delivered abdominally, and 85.7% ended up in stillbirth. Out of 93.4% patients who had successful closure of their fistula, 84.5% of patients had their fistula healed and continent, 8.9 % of them developed urinary incontinence while 6.5% of fistula repair had failed at the time of discharge. Unsuccessful fistula repair was significantly associated with being divorced/widowed (AOR 2.65 95%CI 1.06,6.67), Moderate/severe vaginal scaring (AOR5.25 95% CI 2.19, 12.60). Conclusions: In this study most fistula patients are older than 18 years, referred from health centers either for cephalopelvic disproportion or obstructed labor after prolonged labor at home, high success rates were achieved with surgical repair, and being divorced /widowed and marked vaginal scarring are predictors for unsuccessful fistula repair. Therefore, increasing access to comprehensive emergency obstetric and new born care is essential to minimize the delay contributing to perinatal mortality and obstetric fistula.

Safety, efficacy, and timing of Nd:YAG laser goniopuncture after nonpenetrating deep sclerectomy for glaucoma: A retrospective cohort study

2021 ◽  
pp. 112067212110565
Author(s):  
Grant Slagle ◽  
Tyler Bahr ◽  
Kyle Welburn ◽  
Joshua Katuri ◽  
Ezekiel Quittner-Strom ◽  
...  
Keyword(s):  
Cohort Study ◽  
Intraocular Pressure ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Yttrium Aluminum Garnet ◽  
Pressure Control ◽  
Deep Sclerectomy ◽  
Success Rates ◽  
Kaplan Meier ◽  
Improved Outcomes

Background Neodymium-doped yttrium aluminum garnet laser goniopuncture is an adjuvant procedure for nonpenetrating deep sclerectomy. We investigated optimal laser goniopuncture timing and the effect of laser iridoplasty on success rates Methods This single-center retrospective cohort study compared intraocular pressure control in patients with early versus late laser goniopuncture after nonpenetrating deep sclerectomy and evaluated the effects of laser iridoplasty pretreatment. A 3-month cut-off was used to define early versus late laser goniopuncture. The primary outcome was the proportion of patients maintaining intraocular pressure control according to definitions of complete (no medications) and qualified (with medications) success at 15, 18, and 21 mmHg thresholds. Data were analyzed using right-censored Kaplan–Meier estimation and log-rank testing Results A total of 124 eyes of 124 patients were analyzed. Complete success rates after 3 years were 9.2%, 14.6%, and 23.3% for early laser goniopuncture and 21.8%, 26.0%, and 55.4% for late laser goniopuncture for 15, 18, and 21 mmHg, respectively (all p < .01). Qualified success rates after 3 years were 16.6%, 24.8%, and 40.9% for early laser goniopuncture and 21.5%, 56.1%, and 69.6% for late laser goniopuncture for 15, 18, and 21 mmHg, respectively ( p  =  .096, .0026, .0061). Late laser goniopuncture was associated with decreased risk of iris incarceration and bleb collapse. Iridoplasty pretreatment was not associated with improved outcomes Conclusion Late laser goniopuncture (3-month cut-off) was associated with better intraocular pressure control and less adverse events than early laser goniopuncture.

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