Publications by authors named "Alexandra Yamshchikov"

Background: Managing the complex needs of outpatient parenteral antibiotic therapy (OPAT) patients is challenging and time-consuming. We describe development of multimodal interventions to facilitate patient management within an Epic® (Epic Systems Corporation)-based electronic health record (EHR) platform.

Methods: During 2016-2018, a multidisciplinary team created several modifications in our local EHR to improve gaps in OPAT care, including shared note templates, shared patient lists, automatically triggered notifications, and comprehensive order sets.

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Article Synopsis
  • A recent study examined the use of PASA16 phage therapy in 16 patients with stubborn Pseudomonas aeruginosa infections, highlighting the largest compassionate-use series of its kind.
  • The phages were administered either intravenously or topically, showing good results in 13 out of 15 cases, with only minor side effects reported.
  • The findings suggest that combining PASA16 with traditional antibiotics is a promising option for patients who haven't responded to standard treatments, paving the way for future clinical trials.
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Purpose: The implementation of a penicillin allergy screening tool to optimize the use of aztreonam is described.

Methods: This study was conducted at a 528-bed tertiary referral community teaching facility and compared the use of aztreonam in patients before and after the implementation of a multipronged intervention consisting of a penicillin allergy screening tool (PAST), education, order set decision support, and prospective review of aztreonam orders by the antimicrobial stewardship team and clinical pharmacists. Patients for whom aztreonam was prescribed at any time during their presentation to the hospital January 1-June 30, 2013 (preintervention period), and September 1, 2013-February 28, 2014 (postintervention period) were eligible for inclusion.

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This article discusses a woman who collapsed and landed in a puddle of water in a park near a horse trail. Her rescue and resuscitation started an extraordinary effort by her body to heal from multiple insults. This case study highlights the diagnosis and support of polymicrobial pneumonia secondary to near drowning and the multisystem complications throughout the 3-month hospitalization.

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Recent studies have shown that vitamin D has important functions besides bone and calcium homeostasis. Cells of the innate and adaptive immune system express vitamin D receptors and respond to stimulation by 1, 25-dihydroxyvitamin D. Patients with sepsis have a high mortality rate as well as a high prevalence of vitamin D deficiency.

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Background: Vitamin D insufficiency is common in industrialized and developing nations. Recent studies have shown that vitamin D insufficiency is associated with a higher risk of active tuberculosis. Laboratory studies provided a mechanism for this link on the basis of findings that vitamin D metabolites regulate the expression of cathelicidin (LL-37), which is an endogenous antimicrobial peptide with activity against Mycobacterium tuberculosis.

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Rhodococcus equi is a veterinary pathogen that can cause substantial morbidity in patients that are immunocompromised and are occupationally and recreationally exposed to farming, livestock, and dry soil environments. Although the clinical spectrum of disease associated with R equi is broad, pulmonary involvement is a predominant feature in most cases. We present a case of occupationally acquired R equi pneumonia and mediastinal lymphadenitis in a patient that has had a renal transplant and is in receipt of a stable immunosuppression regimen.

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Objective: To review the existing human controlled intervention studies of vitamin D as adjunctive therapy in settings of infection and provide recommendations for design and implementation of future studies in this field on the basis of the evidence reviewed.

Methods: We conducted a systematic review of randomized controlled clinical trials that studied vitamin D for treatment or prevention of infectious diseases in humans. Studies from 1948 through 2009 were identified through search terms in PubMed and Ovid MEDLINE.

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Vitamin D regulates calcium homeostasis in the body and may play a major role in regulating immune responses to tuberculosis (TB). Pilot studies suggest that vitamin D supplementation may improve outcomes in pulmonary TB (PTB), but clinical evidence using vitamin D in TB treatment is limited. We present a case of vitamin D deficiency in a woman with refractory drug-susceptible PTB.

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Background: Vitamin D insufficiency is common in hospitalized patients. Recent evidence suggests that vitamin D may enhance the innate immune response by induction of cathelicidin (LL-37), an endogenous antimicrobial peptide produced by macrophages and neutrophils. Thus, the relationship between vitamin D status and LL-37 production may be of importance for host immunity, but little data is available on this subject, especially in the setting of human sepsis syndrome and other critical illness.

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