Unilateral Versus Bilateral Research Articles

A Study to Compare The Effects of Unilateral Arm Training Versus Bilateral Arm Training in Post-Stroke Patients with Motor Impairment of Hand

Background of The Study: Motor function deficits are life changing and devastating consequences ofstroke9. It affects the patient’s mobility, daily life activities, participation in society. The most commonmanifestation of upper extremity motor impairment includes muscle weakness, changes in the tone andimpaired motor control. Both unilateral and bilateral arm training found to be an effective strategy for therecovery of upper limb motor function after stroke.Aim of The Study: The aim of the study is to compare the effects of unilateral arm training versus bilateralarm training in post-stroke patients with motor impairment of hand.Objective Of The Study:Ø To assess the effects of unilateral arm training in post-stroke patients with motor impairment of hand.Ø To assess the effects of bilateral arm training in post-stroke patients with motor impairment of hand.Ø To compare the effects of unilateral arm training versus bilateral arm training in poststroke patients withmotor impairment of hand.Method: 30 post stroke patients were recruited for the study based on the inclusion criteria and were dividedinto group A and group B consisting of 15 subjects each. Group A were treated with unilateral arm trainingand Group-B were treated with bilateral arm training. Pretest and posttest scores assessment was done.Result: It showed significant improvement in functional ability of the upper limb as measured by ARATand CAHAI-13. The p value of both the group is <0.05. This study showed that Group-B subjects whowere treated with Bilateral arm training proved to be more effective than Group-A who were treated withunilateral arm training in post stroke patients with motor impairment of hand.Conclusion: This study showed that bilateral arm training is more effective than unilateral arm training inimproving the overall motor function of hand in post stroke individuals.

Comparison of Unilateral Versus Bilateral and Staged Bilateral Versus Concurrent Bilateral Truncal Endovenous Ablation in the Vascular Quality Initiative

Comparison of Unilateral Versus Bilateral and Staged Bilateral Versus Concurrent Bilateral Truncal Endovenous Ablation in the Vascular Quality Initiative

Bilateral Versus Unilateral Cranialization in the Management of a Breached Frontal Sinus.

Frontal sinus breach during craniotomy may occur inadvertently or intentionally. Management of a breached frontal sinus is controversial as numerous operative techniques have been described. Frontal sinus breach may result in life-threatening complications, require additional surgeries, and increase the risk for long-term infectious sequelae. A literature review found a paucity of neurosurgical reports examining breached frontal sinus management or specific analyses of unilateral versus bilateral frontal sinus cranialization. A frontal sinus cranialization technique employed for patients involving frontal sinus breach and analyze outcomes managed with bilateral versus unilateral cranialization was presented in this study. A retrospective review of outcomes was performed using our Institutional Review Board-approved surgical case database between September 2012 and September 2018. Thirty-three frontal sinus cranializations following frontal sinus breach were identified. Average follow-up time was 25 months. A statistically significant difference in postoperative infections was observed in patients with a history of previous cranial surgery who underwent unilateral compared to bilateral frontal sinus cranialization. These results suggest surgeons performing craniotomy or consulted intraoperatively for suspected frontal sinus breach should have a high suspicion for breached frontal sinus and a low threshold for frontal sinus cranialization. Furthermore, when performing frontal sinus cranialization, surgeons should consider performing bilateral, instead of unilateral, cranialization in patients with a history of previous craniotomy as bilateral cranialization was shown to decrease the risk of postoperative infection.

Unilateral Versus Bilateral Facetectomy and its Effect on Segmental Lordosis and Disc Height in MIS TLIF

Background: Minimally invasive transforaminal lumbar interbody fusion (MIS TLIF) techniques have allowed for improved recovery and other metrics compared to its open counterpart. Our expanding literature has increasingly demonstrated the importance of spinopelvic parameters. One of the concerns with MIS TLIF is that the limited exposure and existing technology make it difficult to restore lumbar lordosis at the degenerative level requiring surgery. We hypothesize that bilateral facetectomy with MIS techniques will allow for increased ability to restore segmental lumbar lordosis versus traditional unilateral facetectomy. Methods: This is a retrospective chart review of all patients who underwent single level MIS TLIF between 2017 and 2018. We collected baseline characteristics and reviewed operative records to determine whether unilateral or bilateral facetectomies were performed. We used intraoperative CT (O-Arm) sagittal reformatted images to measure segmental lordosis as well as anterior, middle, and posterior disc heights. Results: Forty patients were identified. Eighteen underwent bilateral facetectomy, and 22 had unilateral facetectomy. We found a significantly increased middle disc height in the bilateral facetectomy group of 3.6 mm vs 2.8 mm in the unilateral group (p=0.04). We also found increased lordosis (4.4 vs. 3.7, respectively) as well as anterior (4.5 vs 3.5) disc height in the bilateral facetectomy group but neither reached statistical significance. Conclusion: Bilateral facetectomy is a tool that can help achieve maximal lordosis and disc height restoration in MIS TLIF surgery. Benefits besides lordosis and disc height restoration include increased autograft for fusion. Across various papers there seems to be a trend toward greater lordosis and disc height restoration, however most papers including ours have been underpowered to find significance.

An Analysis of Risk Factors in Unilateral Versus Bilateral Hearing Loss.

A retrospective review of children with confirmed hearing loss identified through universal newborn hearing screening (UNHS) in Virginia from 2010 to 2014 was conducted in order to compare the incidence of Joint Committee on Infant Hearing (JCIH) risk factors in children with unilateral hearing loss (UHL) to bilateral hearing loss (BHL). Over the 5-year study period, 1004 children (0.20% of all births) developed a confirmed hearing loss, with 544 (51%) children having at least one JCIH risk factor. Overall, 18% of children with confirmed hearing loss initially passed UNHS. Of all children with risk factors, 226 (42%) demonstrated UHL and 318 (58%) had BHL. The most common risk factors for UHL were neonatal indicators (69%), craniofacial anomalies (30%), stigmata of HL syndromes (14%), and family history (14%). The most common risk factors in BHL were neonatal indicators (49%), family history (27%), stigmata of HL syndromes (19%), and craniofacial anomalies (16%). Children with the risk factor for positive family history were more likely to have BHL, while those with craniofacial anomalies were more likely to have UHL (P < .001). Neonatal indicators were the most commonly identified risk factor in both UHL and BHL populations. Children with UHL were significantly more likely to have craniofacial anomalies, while children with BHL were more likely to have a family history of hearing loss. Further studies assessing the etiology underlying the hearing loss and risk factor associations are warranted.

Unilateral Versus Bilateral Balloon Kyphoplasty for Osteoporotic Vertebral Compression Fractures: A Systematic Review of Overlapping Meta-analyses

Background: There have been many meta-analyses and systematic reviews that have discussed the differences between unilateral and bilateral balloon kyphoplasty. However, their conclusions regarding the efficacy and safety of bilateral balloon kyphoplasty in the treatment of osteoporotic vertebral compression fractures (OVCFs) are discordant. Objective: We attempted to select the best evidence review to determine the differences between unilateral and bilateral balloon kyphoplasty, and we wanted to determine the best treatment approach for OVCFs. Study Design: A systematic review of overlapping meta-analyses Setting: The electronic databases of PubMed, Embase and The Cochrane Library were searched. The search extended through Sept. 30, 2017. Moreover, we manually searched the last 10 years of conference reports and papers from the Peking University Health Science Library and consulted 2 experts in the field for any additional relevant information. Methods: We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) Statement and used “A Measurement Tool to Assess Systematic Reviews” (AMTASR) and the Oxford Levels of Evidence to assess the methodological quality of the studies. We applied the Jadad decision algorithm to select the best evidence review. Results: Seven meta-analyses were included in this systematic review. The AMTASR scores of the studies ranged from 4 to 9, with an average of 6. Finally, Sun H et al was shown to represent the best evidence study. Sun H et al proposed that the unilateral kyphoplasty required less surgical time and consumed less cement, reduced cement leakage, and improved short-term general health compared with that of bilateral kyphoplasty. Limitations: The AMTASR scores indicated that some of the included studies were of low quality. In addition, not all of the studies used the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) level. When used, the GRADE level indicated that most of the results consisted of studies of low quality. Conclusions: Unilateral kyphoplasty reduces the operative time, cement volume, and cement leakage rate compared with bilateral kyphoplasty. Therefore, we conclude that unilateral kyphoplasty is more advantageous, effective and safe, compared to bilateral kyphoplasty for the treatment of OVCFs. Key words: Osteoporotic vertebral compression fracture, kyphoplasty, unilateral, bilateral, unipedicular, bipedicular, systematic review

Correlation of Opening Pressure with Unilateral Versus Bilateral Venous Sinus Stenosis in Idiopathic Intracranial Hypertension (IIH) (P3.103)

Correlation of Opening Pressure with Unilateral Versus Bilateral Venous Sinus Stenosis in Idiopathic Intracranial Hypertension (IIH) (P3.103)

Functional Swallowing Outcomes Using FEES Evaluation After Swallowing-Sparing IMRT in Unilateral Versus Bilateral Neck Radiation

Functional Swallowing Outcomes Using FEES Evaluation After Swallowing-Sparing IMRT in Unilateral Versus Bilateral Neck Radiation

Unilateral Versus Bilateral Wrist Band in Alleviating Nausea and Vomiting in Post Cesarean Section

AbstractBackground: Postoperative nausea and vomiting (PONV) is nausea and vomiting occurring within 24 hours after surgery. Acupressure by using wrist bands are used to decrease post-operative nausea and vomiting by stimulation of P6 acupoint.Aim: This study designed to analyze the effect of unilateral wrist band versus bilateral wrist bands in decreasing postop-erative nausea and vomiting.Methods: Forty volunteers, women had cesarean section, were randomly sent to two equal groups in the number of (A&B). Group (A) had unilateral wrist band before induction of anesthesia and removed 24 hours after operation, group (B) had bilateral wrist bands before induction of anesthesia and removed 24 hours after operation.Main Measures: Assessment for all subjects in both groups (A&B) was carried out by using Rhodes Index, immediately after operation and at 6 and 24 hours after operation.Results: Both groups exhibited a reduction in PONV after the end of treatment program, when both groups (A&B) were compared together, there is favoring of group B. These results indicate that using of unilateral wrist band and bilateral wrist bands were effective methods in decreasing post cesarean section nausea and vomiting, but bilateral is more effective.

Biomechanical Stability Afforded by Unilateral Versus Bilateral Pedicle Screw Fixation with and without Interbody Support Using Lateral Lumbar Interbody Fusion.

To determine the stability of fusion constructs with unilateral pedicle screw (UPS) or bilateral pedicle screw (BPS) fixation with and without an interbody implant using the lateral lumbar interbody (LLIF) approach. Standard nondestructive flexibility tests were performed on 13 cadaveric lumbar specimens to assess spinal stability of intact specimens and 5 configurations of posterior and interbody instrumentation. Spinal stability was determined as mean range of motion in flexion-extension, lateral bending, and axial rotation. Nonpaired comparisons were made for these 6 conditions: 1) intact; 2) unilateral interbody via the LLIF approach (LLIF construct); 3) unilateral interbody+ unilateral pedicle screws (UPS) via the LLIF approach (LLIF+ UPS); 4) unilateral interbody+ bilateral pedicle screws (BPS) using the LLIF approach (LLIF+BPS); 5) UPS alone; and 6) BPS alone. UPS and BPS, with and without interbody support, significantly reduced range of motion during the majority of directions of loading. BPS alone provided greater stability than UPS alone and LLIF alone in all directions of motion except axial rotation. With interbody support, there was no significant difference in stability between BPS and UPS across all movement directions. These biomechanical results suggest that fixation in the lumbar spine with an interbody support using an LLIF approach with UPS is a promising alternative to BPS. Although BPS provides greater immediate stability compared with UPS, in the presence of a lateral interbody implant, UPS and BPS provide equivalent stability. In addition, LLIF does not appear to contribute significantly to immediate stability when BPS is used.

Clinical Outcomes for Cystinuria Patients with Unilateral Versus Bilateral Cystine Stone Disease.

Cystinuria is a genetic disorder marked by elevated urinary cystine excretion and recurrent cystine nephrolithiasis. Interestingly, despite seemingly similar contralateral renal anatomy, a subset of cystinuric patients consistently form stones in only one kidney. The aim of this study is to evaluate clinical outcomes in unilateral vs bilateral cystine stone formers. We performed a retrospective case-control study of cystinuric patients evaluated and treated at the University of California, San Francisco between 1994 and 2015 and categorized patients as either unilateral or bilateral stone formers. Clinical presentation, baseline patient demographics, stone procedures, medical therapy regimens, and long-term renal function were compared between the two groups. A total of 42 cystine stone patients (22 female, 20 male) were included in the analysis. The median age at first presentation was 18.5 years and median age at study conclusion was 45.5 years. Two-thirds of patients (n = 28) had a history of bilateral stones, whereas one-third (n = 14) had unilateral stones. Medical therapy regimens were similar between groups. Despite an increased average number of lifetime surgeries (7.5 sessions for bilateral vs 3.7 sessions for unilateral, p < 0.05), there was no significant difference in medians of the most recent glomerular filtration rate when compared with unilateral stone formers (81.5 vs 95 mL/min, respectively; p = 0.28). The majority of cystinuric patients within our cohort form stones bilaterally during their lifetime, and require more surgical interventions than unilateral stone formers. Despite this, overall renal function is well preserved in unilateral and bilateral cystinuric stone formers treated with minimally invasive stone extraction procedures.

Correction to: Reply to ''Complications in DIEP Flap Breast Reconstruction After Mastectomy for Breast Cancer: A Prospective Cohort Study Comparing Unilateral Versus Bilateral Reconstructions".

In the original article Justin C. R. Wormald's middle initials were incorrect. They are correct as reflected in this erratum. The original article has also been corrected.

Unilateral Versus Bilateral Laparoscopic Ovarian Drilling Using Thermal Dose Adjusted According to Ovarian Volume in CC-Resistant PCOS, A Randomized Study.

This study aimed to evaluate the efficacy of unilateral laparoscopic ovarian drilling versus bilateral laparoscopic ovarian drilling with thermal dose adjusted according to ovarian volume in clomiphene citrate (CC)-resistant PCOS patients in terms of endocrine changes, menstrual cycle resumption, ovulation and pregnancy rates. This study was conducted in the Department of Obstetrics and Gynecology, Zagazig university hospitals. One hundred CC-resistant PCOS patients were divided into two groups. Group (I) (50 patients) underwent unilateral laparoscopic ovarian drilling with thermal dose adjusted according to ovarian volume (60J/cm3 of ovarian tissue), and group (II) (50 patients) underwent bilateral laparoscopic ovarian drilling using the same previously mentioned thermal dose. Endocrinal changes and menstrual cycle resumption were assessed within 8weeks postoperatively, but the ovulation and pregnancy rates were estimated after 6-month follow-up period. There was no statistically significant difference between the two groups as regards demographic data (p>0.05). As regards menstruation cycle resumption (62.5 vs. 81%) (p=0.047), total ovulation rate (54.2 vs. 78.7%) (p=0.011) and cumulative pregnancy rate (33.3 vs. 55.3%) (p=0.031), there was statistically significant difference between both groups. After drilling, there were highly statistically significant decrease in the mean serum levels of luteinizing hormone (LH) and significant decrease in the mean serum levels of testosterone in both groups. Mean serum level of follicle stimulating hormone (FSH) did not change significantly in both groups after drilling. Bilateral laparoscopic ovarian drilling with thermal dose adjusted according to ovarian volume is more effective than the right-sided unilateral technique with thermal dose adjusted according to ovarian volume in terms of menstrual cycle resumption, ovulation and cumulative pregnancy rates in CC-resistant PCOS patients.

Comparative Study of Unilateral Recession Resection Versus Bilateral Recession in Intermittent Exotropia

Comparative Study of Unilateral Recession Resection Versus Bilateral Recession in Intermittent Exotropia

Is the Metabolic Cost of Running Different for Athletes with Unilateral Versus Bilateral Transtibial Amputations?

Is the Metabolic Cost of Running Different for Athletes with Unilateral Versus Bilateral Transtibial Amputations?

678 Bilateral Versus Unilateral Deployment of a Metal Stent for a Non-Resectable Malignant High-Grade Hilar Biliary Stricture: A Multicenter Prospective Randomized Study

678 Bilateral Versus Unilateral Deployment of a Metal Stent for a Non-Resectable Malignant High-Grade Hilar Biliary Stricture: A Multicenter Prospective Randomized Study

679 Bismuth Classification of Hilar Cholangiocarcinomas Accurately Predicts the Clinical Outcomes and Survival Rates of Patients that Undergo Unilateral Versus Bilateral Endoscopic Palliative Stenting: Results of the Multicenter, International Collaborative Trial

679 Bismuth Classification of Hilar Cholangiocarcinomas Accurately Predicts the Clinical Outcomes and Survival Rates of Patients that Undergo Unilateral Versus Bilateral Endoscopic Palliative Stenting: Results of the Multicenter, International Collaborative Trial

Single-Leg Power Output and Between-Limbs Imbalances in Team-Sport Players: Unilateral Versus Bilateral Combined Resistance Training.

To compare the effects of unilateral and bilateral resistance training on single-leg power output, between-limbs imbalance (BLI), bilateral deficit (BLD), change of direction (COD), and linear sprinting and jumping performance in young elite basketball players. Twenty-two young (U-16-U-19) male basketball players were randomly assigned either to an exclusive unilateral (UNI) (n = 11) or a bilateral (BIL) (n = 11) resistance-training group during a 6-wk period. Both groups training consisted of 3 unilateral or bilateral 90° back-squat sets. A postdetermined number of repetitions was set until power output dropped to <10% of maximum power (MP) output. In addition, both groups performed 2 sets of 5 unilateral or bilateral drop jumps and 2 sets of 5 unilateral or bilateral countermovement jumps (CMJ). Pre- and posttraining, performance was assessed by an incremental bilateral and unilateral squat-load test, a multiple-COD test (V-cut test), a 15-m-sprint test (7.5 + 7.5 m) with one 180° COD performed with both right (180° RCOD) and left (180° LCOD) legs, a 25-m-sprint test (5- and 15-m split time), and a CMJ test. Within-group analyses showed substantial improvements in 180° RCOD, bilateral and unilateral MP, 25-m-sprint test, and CMJ in both groups. Between-groups analyses showed substantially better results in 180° LCOD, MP with right and left legs, BLI, and BLD in UNI than in BIL. Both training programs substantially improved most of the physical-fitness tests, but only UNI reduced between-limbs asymmetry and achieved greater enhancements in actions that mostly required applying force unilaterally in basketball players.

Unilateral Versus Bilateral Placement of Percutaneous Metallic Stents in Malignant Hilar Obstruction

Purpose: and IV malignant hilar obstructions. Uncovered biliary Wallstents were placed percutaneously in 84 patients with unresectable malignant hilar obstructions. The patients included 67 men and 17 women with a median age of 66 years (range, 42-71 years). Unilateral drainage was achieved in 42 patients by placing one stent (n=35) or by placing an additional stent inserted telescopically through the first one (n=7) to achieve an adequate stent length for long strictures (group 1). In 42 patients, more than one stent was inserted through dual transhepatic tracts in a ''Y'' configuration to maintain two-duct drainage (group 2). There was no significant difference in patients' characteristics on entry to the study. (85%) and late (54%) clinical success rates were significantly higher in group 2 compared to (33%) and (15%) in group 1, respectively. The total re-intervention rate was significantly higher in group 1 (88%) compared to group 2 (46%), P< 0.05. The overall rates of major and minor complications were 5% and 21%, respectively, with no significant difference between both groups. and IV hilar obstructions, full drainage of the whole biliary system through deployment of multiple stents should be performed. To evaluate the necessity of draining more than one hepatic duct in Bisthmus types II, III. Patients and methods: One hundred sixty eight self-expandable. Results: The overall technical success rate was 100%. Early. Conclusion: In Bismuth types II, III,

533 Unilateral Versus Bilateral Lung Transplantation: Consequences for Esophageal Function and Allograph Failure

533 Unilateral Versus Bilateral Lung Transplantation: Consequences for Esophageal Function and Allograph Failure