Unknown Renal Impairment: A Rare Case of Inhaled Tobramycin Induced Acute Kidney Injury in a Cystic Fibrosis Patient.

Acute kidney injury is a reversible medical condition commonly caused by nephrotoxic agents. The infrequency that a nebulized medication elicits a renal insult presents a rare diagnostic challenge. Within this case, we report a 57-year-old cystic fibrosis patient with chronic kidney disease (CKD) Stage G3b (baseline 1.5-1.6 mg/dL) who developed an acute kidney injury (AKI) with a serum creatinine elevation to 4.08 mg/dL and associated worsening vestibular dysfunction related to twice-daily nebulized tobramycin inhalation solution (TIS). The patient was found to have a tobramycin serum level of 4.2 µg/mL 2.5 h after TIS dosing, with elevation remaining present at 1.1 µg/mL 24 h after discontinuation of therapy. Laboratory values at one month continued to show elevated creatinine levels at 2.1 mg/dL, suggesting progression of his baseline CKD. This case supports the benefit of obtaining tobramycin serum levels and vestibular/audiology function testing when evaluating patients on chronic nebulized TIS who present with acute or chronic renal dysfunction. From these serum levels, adjustments to daily dosing, regular monitoring of tobramycin serum levels, or discontinuation of treatment should be made to prevent permanent renal damage in patients with CKD. Calculated Naranjo ADR Probability Scale: 9; Definite.

Evaluation of Home Medication Reconciliation by Clinical Pharmacists for Adult and Pediatric Cystic Fibrosis Patients.

Medication reconciliation is an important aspect of a patient's care process that is ideally performed by clinical pharmacists. Despite literature supporting this process in other patient populations, cystic fibrosis (CF) lacks research in this area. To address this, we designed a retrospective, multi-centered, non-controlled, cross-sectional study at four CF Foundation-accredited centers in the United States to evaluate the medication reconciliation process for adult and pediatric CF patients by documenting the number of home medications reconciled by clinical pharmacists and the number of patients with home medications that did not align with the current CF guidelines published in 2013. There were 105 adult patients and 72 pediatric patients included in the study analysis with a mean number of medications reconciled by clinical pharmacists of 17.4 (standard deviation (SD) 6.7) for adults and 13 (SD 4.6) for pediatric patients. The mean number of discrepancies from guidelines per patient was 1.61 (SD 1.2) for adult patients and 0.63 (SD 0.9) for pediatric patients. Pharmacists play an essential role in identifying and managing medication interactions and further research is necessary to investigate pharmacist impact on medication reconciliation.

A Quality Improvement Initiative to Improve Patient Adherence to Vitamin Supplementation in Cystic Fibrosis.

OBJECTIVES: Patients with cystic fibrosis (CF) and pancreatic insufficiency are prescribed fat-soluble vitamins, although compliance remains low. Our objective was to identify patient and caregiver knowledge deficits regarding vitamin supplementation, provide targeted education, and examine serum vitamin levels pre-and posteducation. METHODS: This prospective quality improvement study involved 118 patients. A vitamin knowledge survey was given to patients/caregivers during a clinic visit, education was provided targeting knowledge deficits, and the survey was re-administered at the next clinic visit. Serum vitamin levels were collected at pre- and postsurvey. RESULTS: Results showed significant pre-post increases for patient and caregiver knowledge scores, and significant decreases in self-reported nonadherence to vitamin use and number of reported barriers affecting adherence. A significant change in vitamin E level to therapeutic range post-education was demonstrated. CONCLUSIONS: Our brief, targeted educational interventions regarding vitamin supplementation showed utility in a routine clinic setting.

Pharmacist-Led Model to Reduce Hospital Readmissions in Medically Complex Children.

OBJECTIVES: This pilot study investigated the feasibility and effect on health care utilization of medically complex children participating in a pharmacist-led model for care coordination. Quality of life and satisfaction with care were secondarily assessed for each patient. METHODS: Four medically complex children were enrolled and contacted by the pharmacist weekly for 5 consecutive months. Time for each encounter with a patient was collected. Each patient's hospital admissions, days of stay, emergency department visits, and clinic visits were recorded. At enrollment and at the end of the study, each caregiver completed the PedsQL 4.0 questionnaire to evaluate the child's quality of life and the Patient Assessment of Care for Chronic Conditions questionnaire to assess satisfaction with care. Patients aged 5 years and older completed an age-appropriate version of the PedsQL 4.0 as well. RESULTS: The pharmacist spent on average 60 to 80 minutes per patient per week. Hospital admissions and days of stay decreased for 3 patients and increased for 1 patient during this study. Quality of life increased for 2 patients and decreased for 2 patients and satisfaction with care increased for all 4 caregivers. CONCLUSIONS: This model was feasible for a pharmacist to coordinate and required frequent physician involvement. Health care utilization varied between patients, but overall decreased for the 4 patients pooled. Changes in quality of life varied and may be attributed to using a survey that was not specific to medically complex children. Overall, caregivers were highly satisfied with this service and the health care their child received.

Volume-regulated Cl- channels in human pleural mesothelioma cells.

Anion channels in human mesothelial and mesothelioma cell lines were characterized by patch-clamp and biomolecular approaches. We found an outwardly rectifying anionic current which was inactivated at positive voltages and inhibited by extracellular adenosine 5'-triphosphate (ATP). Mesothelial and mesothelioma cells behaved differently concerning current inactivation properties. Inactivation is more pronounced and has a steeper onset in mesothelial cells. Different reversal potentials, in asymmetrical Cl(-) solutions, that could be attributed to a different selectivity of the channel, have been observed in the two cell lines. Mesothelioma cell single-channel analysis indicates that the number of the same active anion channel (3-4 pS) increased under hypoosmotic conditions. Immunocytochemistry experiments showed the presence of ICln protein in the cytosol and in the plasma membrane. Western blot analysis revealed an increase of ICln in the membrane under hypotonic conditions, an event possibly related to the activation of Cl(-) channels.