Deltoid flap combined with fascia lata autograft for rotator cuff defects: a histologic study

The purpose of this study was to compare the histological characteristics of an autogenous fascia lata graft alone and a fascia lata graft combined with a deltoid flap in the reconstruction of rotator cuff tears. Ten New Zealand white rabbits were divided into two groups. Infraspinatus tendon defects (1 × 1 cm) were created in each animal. Reconstruction consisted of either a fascia lata graft alone or a fascia lata graft combined with a distally based deltoid flap. At 3 months, tissue harvest and histological analysis was performed. Compared to the fascia lata graft alone, there was significantly increased remodeling activity and neovascularization in the group that included a deltoid flap. Also, there was pronounced interdigitation at the graft/flap interface in the latter group. A mutually beneficial relationship may exist when an autogenous fascial graft is combined with a functional deltoid flap for reconstructing large rotator cuff defects.     

Fulminant endogenous <Emphasis Type="Italic">Klebsiella pneumoniae</Emphasis> endophthalmitis: imaging findings

Endogenous endophthalmitis is a rare but serious complication of Klebsiella pneumoniae infection that has been predominantly reported to occur in diabetic patients of East Asian origin with K. pneumoniae liver abscesses. The clinical symptoms and signs of endogenous endophthalmitis are nonspecific and may mimic other causes of an acute non-traumatic eye. Permanent visual loss and blindness are common sequelae because of delayed diagnosis and treatment. Computed tomography and magnetic resonance imaging can help to differentiate endophthalmitis from other causes of acute non-traumatic eye when the clinical findings are equivocal. Fluid attenuated inversion recovery and diffusion-weighted imaging with apparent diffusion coefficient map are superior to T2-weighted and gadolinium-enhanced T1-weighted sequences in demonstrating intra-ocular abscesses.     

Privately insured medical patients are more likely to have a head CT

Previous studies suggest overuse disparity of head computed tomography (CT) in white pediatric trauma patients with minor head injuries. Our study is meant to determine if race or insurance status impacts the probability of obtaining head CT in patients with a Glasgow Coma Scale (GCS)?=?15. Using the 2008–2010 National Hospital Ambulatory Medical Care Survey for Emergency Departments (NHAMCS) database, the following variables were analyzed: race, emergency medical services (EMS) arrival, triage category, admission status, gender, age, and insurance status. Patients with injuries were excluded. All patients included had GCS?=?15. In univariate analysis, head CT is more likely to be obtained for patients in the following categories: Medicare insured, private insurance, Medicaid insured, and self-pay, EMS arrival, triage category immediate, and age >75 years. In logistic regression, race (white vs. black) was no longer significant, but there was disparity based on insurance status with privately insured patients more likely to receive a head CT (OR?=?1.683, 95 % CI?=?1.255–2.259). After controlling for the above inclusion variables and focusing on patients less likely to need CT (non-traumatic with GCS?=?15), privately insured patients were more likely to receive a head CT compared with uninsured. Race alone was not associated with an increased probability of receiving a head CT.     

Preheating of streamlined liner of pharyngeal airway (SLIPA) reduced the related complications: a randomized control study

This study was designed to verify whether preheating could decrease the complications that may be associated with the use of streamlined liner of pharyngeal airway (SLIPA). We evaluated the incidence of sore throat, maximum sealing pressure, hoarseness and blood stains after preheating of SLIPA. Eighty patients scheduled for hysteroscopic surgery to whom the SLIPA was considered suitable were randomly allocated to preheating group or control group. The SLIPA in preheating group was placed in the incubator at 42 °C. The control group temperature was 24 °C. The mean maximum sealing pressure and duration of insertion were compared. Patients were interviewed at recovery room about sore throat and other complications. There were statistical differences in incidence of sore throat, severity of sore throat and blood stains between groups. However there was no statistical difference in the maximum sealing pressure. Our results suggest preheating of the SLIPA decreased the complications related with the insertion of SLIPA. Clinical Trials.gov Identifier NCT02539485.     

Using Patient Feedback to Optimize the Design of a Certolizumab Pegol Electromechanical Self-Injection Device: Insights from Human Factors Studies

Introduction

We incorporated patient feedback from human factors studies (HFS) in the patient-centric design and validation of ava^®, an electromechanical device (e-Device) for self-injecting the anti-tumor necrosis factor certolizumab pegol (CZP).

Methods

Healthcare professionals, caregivers, healthy volunteers, and patients with rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, or Crohn’s disease participated in 11 formative HFS to optimize the e-Device design through intended user feedback; nine studies involved simulated injections. Formative participant questionnaire feedback was collected following e-Device prototype handling. Validation HFS (one EU study and one US study) assessed the safe and effective setup and use of the e-Device using 22 predefined critical tasks. Task outcomes were categorized as “failures” if participants did not succeed within three attempts.

Results

Two hundred eighty-three participants entered formative (163) and validation (120) HFS; 260 participants performed one or more simulated e-Device self-injections. Design changes following formative HFS included alterations to buttons and the graphical user interface screen. All validation HFS participants completed critical tasks necessary for CZP dose delivery, with minimal critical task failures (12 of 572 critical tasks, 2.1%, in the EU study, and 2 of 5310 critical tasks, less than 0.1%, in the US study).

Conclusion

CZP e-Device development was guided by intended user feedback through HFS, ensuring the final design addressed patients’ needs. In both validation studies, participants successfully performed all critical tasks, demonstrating safe and effective e-Device self-injections.

Funding

UCB Pharma.

Plain Language Summary

Plain language summary available on the journal website.

     

Extension of Nonoperative Management of Blunt Pancreatic Trauma to Include Grade III Injuries: A Safety Analysis

Background  In hemodynamically stable patients after blunt pancreatic trauma, the main pancreatic duct (MPD) disruption (American Association for the Surgery of Trauma [AAST] grade III-IV-V lesions) is usually treated surgically or by endoscopic stent placement, whereas injuries without duct involvement (grade I-II) are liable to medical treatment. To date, no evidence has been reported regarding nonoperative management (NoM) of grade III injuries. We aimed to evaluate the safety of extending medical management to include cases of distal MPD involvement (grade III). Patients and methods  Data were collected on patients admitted after blunt pancreatic trauma between January 1999 and December 2007. Patients exhibiting hemodynamic instability or hollow organ perforations were excluded from this study, as they were surgically managed. In all remaining cases NoM was attempted. Antibiotic prophylaxis and early total enteral nutrition were routinely adopted. Grade III patients received octreotide during hospitalization and for 6 months after discharge. Results  Eleven patients (2 with grade I injury, 3 with grade II injury, and 6 with grade III injury, all diagnosed by contrast-enhanced helical CT) were included. Nonsurgical management was carried out in all of these patients. Among grade III patients, one developed a peripancreatic abscess; another, a pancreatic fistula. Both were successfully treated nonoperatively. The average length of hospital stay was similar in grade I-II and grade III patients. After a median follow-up of 57 months no mortality or pancreatic sequelae had occurred. Conclusions  Under the aforementioned conditions, an attempt to extend NoM to include patients with AAST-grade III lesions can be justified. However, such a strategy demands continuous patient monitoring, because should the case worsen, surgery might become necessary.     

Dimethyl sulfoxide with lignocaine versus eutectic mixture of local anesthetics: prospective randomized study to compare the efficacy of cutaneous anesthesia in shock wave lithotripsy

The objective of the study was to compare the efficacy of dimethyl sulfoxide (DMSO) mixed with lignocaine and eutectic mixture of local anesthetics (EMLA) cream as topically applied surface anesthetics in relieving pain during shock wave lithotripsy (SWL) in a prospective randomized study. Of the 160 patients, 80 patients received DMSO with lignocaine and 80 patients received EMLA cream, applied to the skin of the flank at the area of entry of shock waves. SWL was done with Seimens lithostar multiline lithotripter. The pain during the procedure was assessed using visual analog and verbal rating scores. The mean visual analog scale scores for the two groups were 3.03 for DMSO group and 4.43 for EMLA group. The difference of pain score on visual analog scale was statistically significant (p < 0.05). Similarly, the pain scores as rated on the verbal rating scale were also evaluated; the mean score on verbal rating scale were 2.34 for DMSO group and 3.00 for the EMLA group. The difference between the pain score on verbal rating scale was also found to be statistically significant (p < 0.05). Our study showed that DMSO with lignocaine is a better local anesthetic agent for SWL than EMLA cream. The stone fragmentation and clearance rates are also better in the DMSO group.     

Dopamine protects gentamicin early induced nephrotoxicity in Sprague–Dawley rats

Routine therapeutic use of dopamine has been shown to influence renal hemodynamic response through removing contractile effects of nephrotoxicants on mesangial cells and subsequent interaction with locally expressed prostaglandin subtypes (PGE2 and PGI2). To determine the way in which the amino acid managed to preserve Sprague–Dawley rats against gentamicin-induced nephrotoxicity, a randomized prospective study was carried out. In this study, 40 healthy rats were randomly assigned in four trials to receive either normal saline, gentamicin, gentamicin plus dopamine, or dopamine for 9 days. Administration of gentamicin at a dose of 80 mg kg⁻¹ day⁻¹ reduced the creatinine clearance as result of early hemodynamic toxicity, and tubular reabsorption of electrolytes after phospholipiduria and urinary activity of tubular enzymes. H&E histopathology revealed acute tubular necrosis with cast formation triggered by gentamicin over 9 days of experiment, in addition to interstitial nephritis and tubular epithelial loss. Further biochemical studies showed protecting effects of supplemented dopamine, including slow down in the urinary enzyme activity, modest to moderate phospholipiduria with recovery in the renal clearance and the ATPase activity up to 50% when compared to saline- and gentamicin-treated rats. Normal glomerular and tubular function on recovery from toxic renal failure led us to conclude that renovascular effects of dopamine were early attributed to glomerular preservation, whereas the tubule function prepared by the amino acid was just a consequent.     

New anthracene glycosides from <Emphasis Type="Italic">Rhodomyrtus tomentosa</Emphasis> stimulate osteoblastic differentiation of MC3T3-E1 cells

Two new anthracene glycosides (1, 2) were isolated from aerial parts of Rhodomyrtus tomentosa, along with three known compounds (3–5). The structures of two new compounds were established to be 4,8,9,10-tetrahydroxy-2,3,7-trimethoxyanthracene-6-O-β-D-glucopyranoside (1) and 2,4,7,8,9,10-hexahydroxy-3-methoxyanthracene-6-O-α-L-rhamnopyranoside (2) based on spectroscopic and chemical methods. Among them, compound 1, 2, and 5 significantly (P<0.05) increased the alkaline phosphatase activity, collagen synthesis, and mineralization of the nodules of MC3T3-E1 osteoblastic cells compared to those of the control, respectively.     

The role of hyaluronic acid binding assay in choosing the fertilization method for patients undergoing IVF for unexplained infertility

Purpose  

Patients with unexplained infertility may have fertilization problems. Split fertilization (ICSI and conventional IVF on sibling oocytes) is often used to avoid poor fertilization. Our aim was to assess the ability of hyaluronic acid binding (HA-binding) assay to predict spontaneous fertilization during IVF.