Effectiveness of a "Suppression Bundle" to improve HIV virologic suppression in an outpatient infectious disease clinic: a pilot implementation study.

Despite effectiveness and accessibility of combined anti-retroviral therapy (cART), only 85% of people living with HIV (PLHIV) in the United States are virologically suppressed. Improving suppression is complex. Our objective was to consider unique factors in PLHIV with non-suppressed viral loads in clinic and improve the percentage of suppressed patients by implementing a "Suppression Bundle" consisting of three to five bundled interventions with the goal of improved suppression. Prior to the study, there were 567 HIV-positive patients receiving care in clinic. Of those, 89 had a measurable viral load (>40 copies/mL). In this pilot pre-post implementation, we focused on the 89 non-suppressed patients to (1) determine feasibility of implementing bundles and (2) increase the number of patients with suppressed viral loads pre- to post-intervention. Of non-suppressed patients, 65 were active in care immediately pre-intervention and participated in the pilot. At the completion of the 9-month intervention, 46 had viral loads <40 copies/mL, demonstrating substantial improvement with 70.1% of the previously non-suppressed patients achieving suppression. By considering unique patient factors, an individualized Suppression Bundle is acceptable, feasible, and may increase virally suppressed patients in an outpatient clinic. Next steps include determining whether suppression bundles can be implemented in differing practices.

A randomized controlled trial examining the efficacy of motivational counseling with observed therapy for antiretroviral therapy adherence.

This study determined whether motivational interviewing-based cognitive behavioral therapy (MI-CBT) adherence counseling combined with modified directly observed therapy (MI-CBT/mDOT) is more effective than MI-CBT counseling alone or standard care (SC) in increasing adherence over time. A three-armed randomized controlled 48-week trial with continuous electronic drug monitored adherence was conducted by randomly assigning 204 HIV-positive participants to either 10 sessions of MI-CBT counseling with mDOT for 24 weeks, 10 sessions of MI-CBT counseling alone, or SC. Poisson mixed effects regression models revealed significant interaction effects of intervention over time on non-adherence defined as percent of doses not-taken (IRR = 1.011, CI = 1.000-1.018) and percent of doses not-taken on time (IRR = 1.006, CI = 1.001-1.011) in the 30 days preceding each assessment. There were no significant differences between groups, but trends were observed for the MI-CBT/mDOT group to have greater 12 week on-time and worse 48 week adherence than the SC group. Findings of modest to null impact on adherence despite intensive interventions highlights the need for more effective interventions to maintain high adherence over time.

Internal Medicine Clerkship ID Curriculum Flip: Will They Prefer to Pre-learn?

Varying pedagogical approaches of undergraduate medical education are utilized in clerkships to supplement bedside teaching. The flipped classroom mode, in which self-paced study precedes the in-person session, is often used in pre-clinical education. This shift allows time with the instructor to focus on guided application of pre-learned concepts. At our institution, the Internal Medicine Clerkship Infectious Diseases lecture was substituted to a flipped classroom with two pre-learning videos. Student satisfaction scores were higher for the flipped classroom and comments were more negative for the traditional lecture. This suggests that senior medical students favor flipped classroom pedagogy despite pre-learning requirements.

In Vitro Assessment of Microbial Barrier Properties of Cyanoacrylate Tissue Adhesives and Pressure-Sensitive Adhesives.

Background: Despite advances in incision care and surgical dressings, surgical site infections remain a common complication. Post-operative contamination of a surgical site is believed to play a role in many of these infections. Most surgical dressings adhere to the skin with pressure-sensitive adhesives. Cyanoacrylate tissue adhesives bond to skin with much greater strength and have inherent antimicrobial properties. This study was designed to compare the microbial barrier properties of common pressure-sensitive adhesives to medical-grade cyanoacrylate tissue adhesives (2-octyl cyanoacrylate and N-butyl cyanoacrylate). Methods: Samples of cyanoacrylate tissue adhesives and pressure-sensitive adhesives were placed on solid culture media. Five common bacterial pathogens were used to contaminate 50 cyanoacrylate samples and 150 pressure-sensitive adhesive samples. Each plate was evaluated for bacterial growth underneath the adhesive sample daily for a total of 72 hours. Results: No penetration was seen through any of the cyanoacrylate adhesive samples at 72 hours. In sharp contrast, bacteria penetrated 99.3% of the pressure-sensitive adhesive samples at 72 hours. Conclusions: Medical grade cyanoacrylate tissue adhesives provide a superior microbial barrier compared with common pressure-sensitive adhesives. Consideration could be given to the use of these adhesives for the securement of surgical dressings.

Mycobacterium bovis Osteomyelitis of the Thoracic Spine Mimicking a Metastatic Lytic Lesion in a Patient Exposed to Intravesicular Bacille Calmette-Guérin Treatment.

An 80-year-old man with previous intravesicular bacille Calmette-Guérin therapy developed mass lesions of the lower thoracic spine. Metastatic disease was suspected. The patient underwent a course of radiation; however, biopsy later demonstrated fibrosis and cultures grew Mycobacterium bovis. The patient was treated with a course of isoniazid, rifampin, and ethambutol.

Tigecycline for the Treatment of Severe and Severe Complicated Clostridium difficile Infection.

INTRODUCTION: Clostridium difficile infection (CDI) is a common cause of nosocomial diarrhea. Metronidazole and vancomycin are the primary treatment options for CDI, but increasing rates of antimicrobial resistance and severe, refractory disease have prompted the need for alternative agents. Tigecycline has previously demonstrated favorable in vitro activity against C. difficile isolates, but clinical data on its use in the treatment of CDI are severely lacking. The objective of this study was to describe our experience using tigecycline in the treatment of severe and severe complicated CDI. METHODS: This was a retrospective case series of hospitalized patients with severe and severe complicated CDI who were treated with tigecycline. Disease severity assessments were determined according to current practice guidelines. Diagnosis of toxigenic CDI was confirmed by polymerase chain reaction and patients were excluded if they received tigecycline for <48 h. Data were collected by review of the electronic medical record. The primary outcome was clinical cure. Secondary outcomes were sustained response, hospital mortality, and 28-day all-cause mortality. RESULTS: A total of 7 cases of severe and complicated CDI were reviewed. Intravenous tigecycline administered as a 100-mg loading dose followed by 50 mg twice daily resulted in clinical cure in 85.7% (n = 6/7) of cases. The majority of patients (n = 4/5) were treated with the novel triple therapy combination of tigecycline, vancomycin, and metronidazole and resulted in clinical cure in 80% (n = 4/5) cases. Sustained response at 28 days was 100% among evaluable cases (n = 5/5). Hospital mortality did not occur in any patients, and 28-day all-cause mortality was 28.6% (n = 2/7). CONCLUSION: Tigecycline appears to be a reasonable addition to the therapeutic regimen in the treatment of severe or complicated CDI, including cases that are refractory to standard therapy. A prospective clinical trial confirming these observational findings is warranted.

Incidence and clinical predictors of ocular candidiasis in patients with Candida fungemia.

Purpose. The aim of this study is to determine the incidence and the predictors of ocular candidiasis among patient with Candida fungemia. Methods. We retrospectively reviewed the charts of all patients diagnosed with candidemia at the University of Kansas Medical Center during February 2000-March 2010. Data regarding patients' demographics, clinical characteristics, laboratory results, and ophthalmology examination findings were collected. Results. A total of 283 patients with candidemia were enrolled. The mean age (± standard deviation) was 55 ± 18 years; 66% were male. The most commonly isolated Candida species were C. albicans (54%), C. parapsilosis (20%), C. glabrata (13%), and C. tropicalis (8%). Only 144 (51%) patients were evaluated by ophthalmology; however, the proportion of patients who were formally evaluated by an ophthalmologist increased during the study period (9%in 2000 up to 73%in 2010; P < 0.0001). Evidence of ocular candidiasis was present in 18 (12.5%) patients. Visual symptoms were reported by 5 of 18 (28%) patients. In multivariable analysis, no predictors of ocular candidiasis were identified. Conclusions. The incidence of ocular candidiasis among patients with fungemia remains elevated. Most patients are asymptomatic and therefore all patients with candidemia should undergo fundoscopic examination to rule out ocular involvement.