Low-level laser therapy prevents severe oral mucositis in patients submitted to hematopoietic stem cell transplantation: a randomized clinical trial

Purpose

The purpose of this study is to evaluate the effectiveness of low-level laser therapy for the prevention of oral mucositis in patients undergoing hematopoietic stem cell transplantation.

Methods

This is a randomized, parallel, superiority trial including 35 patients divided into the following: laser (n?=?17) and sham (n?=?18). The variables assessed were oral mucositis (grade 2 of the World Health Organization oral toxicity scale), severe oral mucositis (grade 3 or 4), and pain (according to a visual analogue scale). In the laser group, a InGaAlP laser, wavelength of 650 nm, power 100 mW, energy per point of 2 J, time 20 s by point, extremity fiber optic 0.028 cm², and energy density 70 J/cm², was used, applied the first day of conditioning until D + 5, while the sham group received simulated laser over the same period.

Results

No statistically significant difference was found in the incidence of oral mucositis (p?=?0.146). Severe mucositis was found in 40 % of the patients (14/35), 3 in the intervention group (17.65 %) and 11 in the sham group (61.11 %) (p?=?0.015). The cumulative probability of survival with respect to the development of severe oral mucositis was >0.6 for the intervention group and 0 for the control group (p?=?0.0397). On the day on which pain was considered the worst, patients in the sham group were more likely to classify their pain as severe compared to those in the laser group (p?=?0.041).

Conclusion

Low-level laser therapy proved effective for the prevention of severe oral mucositis and intense oral pain in patients submitted to hematopoietic stem cell transplantation.

     

Preperitoneal fat thickness by ultrasonography and obesity-related disorders

Purpose To determine optimal cutoff values for preperitoneal fat thickness measured by ultrasonography as indicators for obesity-related disorders. Methods We studied 276 men aged 60 ± 13 years and 307 women aged 64 ± 11 years. Participants were consecutively enrolled from inpatients aged ≤75 years. Demographic data were collected and maximal preperitoneal fat thickness (PFT_max) and carotid intima-media thickness were evaluated on B-mode ultrasonography. Receiver operating characteristic (ROC) curve analysis was performed to determine optimal cutoff values for PFT_max. Results Multiple regression analysis using one or more obesity-related disorders as an objective variable showed that the tertile on the basis of PFT_max was a significant independent contributing factor in both men and women. Receiver operating characteristic curve analysis identified the cutoff points of 6.1 mm for PFT_max in men (sensitivity, 66.7%; specificity, 62.5%) and 8.7 mm for PFT_max in women (sensitivity, 56.6%; specificity, 63.6%) as discriminator values corresponding to the presence of one or more obesity-related disorders. Using the new criteria to diagnose visceral obesity, we found that adjusted carotid intima-media thickness was significantly higher in men and women with visceral obesity and two or more obesity-related disorders than in those without them. Conclusions These findings suggested that PFT_max measured on ultrasonography was useful in screening for indicators of cardiovascular risk factors.     

Management of Peripheral Arterial Disease of the Lower Extremities

Smoking should be stopped and hypertension, diabetes mellitus, dyslipidemia, and hypothyroidism treated in patients with peripheral arterial disease (PAD) of the lower extremities. Statins decrease the incidence of intermittent claudication and improve exercise duration until the onset of intermittent claudication in persons with PAD and hypercholesterolemia. Antiplatelet drugs such as aspirin or clopidogrel, especially clopidogrel, angiotensin-converting enzyme inhibitors, and statins should be given to all persons with PAD. Beta blockers should be given if coronary artery disease is present. Exercise rehabilitation programs and cilostazol increase exercise time until intermittent claudication develops. Chelation therapy should be avoided. Indications for lower extremity percutaneous transluminal angioplasty or bypass surgery are (1) incapacitating claudication in persons interfering with work or lifestyle, (2) limb salvage in persons with limb-threatening ischemia as manifested by rest pain, nonhealing ulcers, and/or infection or gangrene, and (3) vasculogenic impotence. Dr. Aronow has no real or apparent conflicts of interest relating to the subject under discussion.     

Deep Brain Stimulation and Motor Cortical Stimulation for Neuropathic Pain

Deep brain stimulation (DBS) is an important treatment option for neuropathic pain. DBS has a considerable history, and it can be used successfully for a wide number of pain syndromes. Epidural motor cortex stimulation (MCS) also is a treatment option for neuropathic pain. Less invasive than DBS, MCS has been rapidly adopted and studied since first described in 1991. A growing body of literature supports the use of MCS for facial pain, though further study to better define the mechanism of action and the most appropriate patient populations is ongoing.     

53-years-old with mental status changes

D-lactic acidosis, a complication of short bowel syndrome, presents with a variety of neurological symptoms and metabolic acidosis. Treatment is hydration, replacement of nutritional deficiency replacement, and selective antibiotics. Prevention entails complex carbohydrate diet and vitamin and mineral supplements. The authors have stated that they do not have a significant financial interest or other relationship with any product manufacturer or provider of services discussed in this article. The authors also do not discuss the use of off-label products, which includes unlabeled, unapproved, or investigative products or devices.     

Corporeality: women's experiences of a body with rheumatoid arthritis

The purpose of this research report is to describe women's experiences living with rheumatoid arthritis (RA). Twenty women diagnosed with RA participated in semistructured interviews that were analyzed using qualitative content analysis. Findings indicated that how women with RA experience life in their physical bodies is fundamentally important. Corporeality, the name we chose for this phenomenon, is quite literally being one's body. This experience of the reality of being in or being of a body or corpus was central, not only to participants' perceptions of well-being but also to the impact rheumatoid arthritis was having on their lives and the actions they took to contend with the illness. The authors identified three themes that described what corporeality was for women with RA: relating to a noncompliant body, body out of synch, and private body made public. These results are discussed in light of other research about embodied experience in persons living with chronic illness.     

Procalcitonin-guided antibiotics in severe sepsis

Citation

Nobre V, Harbarth S, Graf JD, Rohner P, Pugin J: Use of procalcitonin to shorten antibiotic treatment duration in septic patients: a randomized trial. Am J Respir Crit Care Med 2008, 177: 498–505 [1].

Background

The duration of antibiotic therapy in critically ill patients with sepsis can result in antibiotic overuse, increasing the risk of developing bacterial resistance. Procalcitonin (PCT)-guided antibiotic use reduces antibiotic exposure in community-acquired pneumonia. Whether it might also reduce antibiotic exposure in severe sepsis is unknown.

Methods

Objective

To test the hypothesis that an algorithm based on serial measurements of PCT allows reduction in the duration of antibiotic therapy compared with empirical rules, and does not result in more adverse outcomes in patients with severe sepsis and septic shock.

Design

Single-center, non-blinded randomized controlled trial.

Setting

Mixed medical and surgical ICU at a university teaching hospital.

Subjects

79 adult patients with suspected severe sepsis or septic shock.

Intervention

All patients had circulating PCT levels drawn daily. In patients randomly assigned to the intervention group, antibiotics were stopped when PCT levels had decreased 90% or more from the initial value (if clinicians agreed) but not before Day 3 (if baseline PCT levels were <1 mg/L) or Day 5 (if baseline PCT levels were >1 mg/L). In control patients, clinicians decided on the duration of antibiotic therapy based on empirical rules.

Outcome

Systemic antibiotic exposure, measured using three variables: 1) duration of antibiotic treatment, 2) antibiotic exposure days per 1000 inpatient days, and 3) days alive without antibiotics within the 28-day follow-up period.

Results

Patients assigned to the PCT group had 3.5-day shorter median duration of antibiotic therapy for the first episode of infection than control subjects (intention-to-treat, n = 79, P = 0.15). In patients in whom a decision could be taken based on serial PCT measurements, PCT guidance resulted in a 4-day reduction in the duration of antibiotic therapy (per protocol, n = 68, P = 0.003) and a smaller overall antibiotic exposure (P = 0.0002). A similar mortality and recurrence of the primary infection were observed in PCT and control groups. A 2-day shorter intensive care unit stay was also observed in patients assigned to the PCT group (P = 0.03).

Conclusion

Our results suggest that a protocol based on serial PCT measurement allows reducing antibiotic treatment duration and exposure in patients with severe sepsis and septic shock without apparent harm.     

The “tree‐pruning hypothesis” in bilingualism

Background: The “tree‐pruning hypothesis” (TPH) suggests that syntactic deficits in agrammatic production are highly selective: most patients have impaired tense inflection while their agreement inflection is preserved. The TPH states that the split‐inflection tree is pruned at the tense node, which is why an obvious dissociation in performance exists between tense and agreement.

Aims: This study aims to determine whether the TPH applies to a bilingual individual by examining whether a dissociation in performance exists between agreement and tense inflection in the bilingual speaker's two languages: German and Luxembourgish. We expect the pattern of grammatical impairment to support the validity of the TPH in German and Luxembourgish.

Methods & Procedures: The participant examined in this study, AM, is a pre‐onset balanced German–Luxembourgish speaker with Broca's aphasia and moderate agrammatism. We used a verb completion and grammatical assessment task to examine whether a dissociation in performance existed between tense and agreement in both languages.

Outcomes & Results: The results comply with the TPH. The agreement results produced by the participant were significantly better than the tense results in both German and Luxembourgish.

Conclusions: The results show a clear dissociation in each language as predicted by the TPH. This confirms that the TPH can be applied to both German and Luxembourgish.     

Urine interleukin-6 is an early biomarker of acute kidney injury in children undergoing cardiac surgery

Introduction  

Interleukin-6 (IL-6) is a proinflammatory cytokine that increases early in the serum of patients with acute kidney injury (AKI). The aim of this study was to determine whether urine IL-6 is an early biomarker of AKI and determine the source of urine IL-6. Numerous proteins, including cytokines, are filtered by the glomerulus and then endocytosed and metabolized by the proximal tubule. Since proximal tubule injury is a hallmark of AKI, we hypothesized that urine IL-6 would increase in AKI due to impaired proximal tubule metabolism of filtered IL-6.     

Ureteral intussusception due to a polyp

Intussusception of the ureter is a rare complication of some ureteral diseases. A 49-year-old man was found to have a ureteral intussusception in the middle part of the right ureter accompanied by a polyp below the invaginated segment of the ureter. Surgery confirmed the diagnostic imaging findings. Here, we present a case of ureteral intussusception associated with a fibroepithelial polyp and discuss the radiological characteristics.