Impact of Vitamin K Administration on Elevated International Normalized Ratio in Chronic Liver Disease.

Limited studies assess the efficacy of vitamin K administration in patients with chronic liver disease (CLD). However, vitamin K is commonly used to treat elevations in international normalized ratio (INR) in these patients with the intended benefit of reducing bleeding risk. This retrospective, single-center cohort study aimed to evaluate the impact of vitamin K administration on INR in patients with CLD. Hospitalized patients ≥ 18 years of age with a diagnosis of CLD or cirrhosis and received vitamin K were included. The primary outcome was the absolute change in INR from baseline to 24 to 48 h after vitamin K administration. Secondary endpoints included subgroup analyses of the primary outcome by route of administration and single versus multidose administration, and incidence of in-hospital venous thromboembolism (VTE) or major bleeding. A total of eighty-five patients, primarily with Child-Pugh class C (76.5%), were included. Route of vitamin K administration included oral (PO) (72%) and intravenous (IV) (26%) with a mean daily dose of 8.5 ± 2.3 mg. The absolute change in INR was -0.07 ± -0.35 following vitamin K administration. There was no difference in absolute INR change between single versus multiple dose administration (-0.16 ± -0.35 and -0.03 ± -0.35; P= .13) or between PO versus IV administration (-0.06 ± -0.23 and -0.18 ± -0.48; P = .11). The incidences of in-hospital VTE and major bleeding were 2.4% and 3.5%, respectively. The administration of vitamin K in hospitalized patients with CLD resulted in minimal INR change, suggesting this intervention may not have the intended benefit of reducing bleeding risk.

Examination of the Effectiveness of Direct Oral Anticoagulants in Comparison to Warfarin in an Obese Population.

Background: While commonly prescribed today, direct oral anticoagulants (DOACs) have historically been avoided in patients with class III obesity or a weight >120 kg due to limited literature regarding the efficacy and safety in this population. Objective: The overall objective was to examine the effectiveness of DOACs compared to warfarin in a population with obesity. Methods: Patients with a diagnosis of venous thromboembolism (VTE) or atrial fibrillation and a body mass index (BMI) ≥35 kg/m2 from August 1, 2015, to August 1, 2020, were included in this retrospective cohort study. Patients receiving a DOAC were matched in a 1:2 ratio to warfarin. The primary outcome was a composite of stroke or recurrent VTE. Secondary outcomes included the individual components of the primary outcome, hospitalization for bleed, and the primary outcome in patients with a BMI ≥40 kg/m2. Results: A total of 162 patients were included, with 54 and 108 in the DOAC and warfarin groups, respectively. Baseline BMI was similar between groups (45.7 kg/m2 for DOACs vs 43.8 kg/m2 for warfarin), with approximately 70% of patients having a BMI ≥40 kg/m2. The primary outcome occurred in 1 patient (1.9%) in the DOAC group and 2 patients (1.9%) in the warfarin group. The DOAC group had a higher, nonsignificant incidence of bleeding (5.6% vs 0.9%, P = 0.11). There was no difference between groups in incidence of deep vein thrombosis (DVT), pulmonary embolism (PE), or stroke in patients with a BMI ≥40 kg/m2. Conclusion: DOACs may be as efficacious as warfarin in the prevention of stroke or recurrent VTE in patients with a BMI of ≥35 kg/m2. Prospective, randomized trials are warranted to further assess the efficacy and safety of DOACs in this population.

Evaluation of the Impact of an Inpatient Hyperglycemia Protocol on Glycemic Control.

PURPOSE: Inpatient hyperglycemia is associated with poor outcomes. Existing research assessing inpatient hyperglycemia protocols has shown improvements in average blood glucose levels with inconsistent results regarding rates of hypoglycemia and hyperglycemia. The objective of this study was to evaluate the impact of an inpatient hyperglycemia protocol on glycemic control. METHODS: This retrospective cohort study at a large, community teaching hospital included adult patients in non-critical care units requiring insulin administration for glycemic control. The intervention examined was utilization of an inpatient hyperglycemia protocol, comprised of a computerized physician order entry order set and provider education at the time of implementation. Two cohorts, a pre-protocol implementation group and a post-protocol implementation group, were compared. The primary outcome was the incidence of blood glucose values within 70-180 mg/dL over a 72-hour period between groups. Key secondary outcomes included the incidence of hypoglycemia (less than 70 mg/dL), severe hyperglycemia (above 300 mg/dL), total insulin use, and hospital length of stay. RESULTS: The primary outcome was significantly improved following protocol implementation (54.2% vs. 58.4%, p = 0.001). Compared to the pre-protocol group, the post-protocol group had lower incidence of hypoglycemia (3.1% vs. 1.2%, p < 0.001), severe hyperglycemia (9.9% vs. 6.7%, p < 0.001), less total insulin use (1.1 units/kg vs. 0.6 units/kg, p < 0.001), and shorter length of stay (5.1 days vs. 3.7 days, p < 0.001). CONCLUSIONS: The implementation of an inpatient hyperglycemia protocol was associated with improved glycemic control, decreased incidence of both hypoglycemia and severe hyperglycemia, and less total insulin use.

Assessment of Apixaban Prescribing Patterns for Nonvalvular Atrial Fibrillation in Hospitalized Patients.

BACKGROUND: Apixaban is a direct oral anticoagulant (DOAC) for the prevention of stroke and systemic embolism in patients with nonvalvular atrial fibrillation (NVAF). Other DOACs require renal dose adjustments based solely on creatinine clearance. Apixaban differs in that its dose adjustments are more complex, potentially leading to prescribing errors. OBJECTIVE: To determine if adherence to Food and Drug Administration (FDA)-approved dosing for apixaban is maintained in hospitalized patients with NVAF. METHODS: Patients ≥18 years old with NVAF who received apixaban during admission to 1 of 3 hospitals were evaluated. The primary outcome was to determine if providers order apixaban in accordance with FDA-approved dosages. Secondary outcomes included determining if pharmacist review increased the number of orders in accordance with FDA-approved dosing, which of the 3 criteria (age ≥80 years, body weight ≤60 kg, or serum creatinine ≥1.5 mg/dL) were met in patients receiving off-label dosing, and the rationale for off-label prescribing. RESULTS: A total of 556 patients met inclusion criteria. Apixaban was dosed according to FDA labeling by providers in 83.4% (n = 464) of orders. After pharmacist review, 87.0% (n = 484) of orders were at the approved dose, 12.2% (n = 68) were underdosed, and 0.7% (n = 4) were overdosed. Most patients who were underdosed met only 1 dose reduction criterion-most commonly age ≥80 years (56.0%). Reasons for off-label dosing included home dose continuation (39.0%), history of or perceived bleeding risk (30.5%), or unspecified/other (30.5%). CONCLUSIONS: The majority of apixaban orders for NVAF were based on FDA-approved dosages after provider entry and pharmacist review.

Role of doxycycline in Clostridium difficile infection acquisition.

OBJECTIVE: To evaluate and review the literature surrounding the potential protective benefit of tetracyclines, particularly doxycycline, in reducing Clostridium difficile infection (CDI) acquisition. DATA SOURCES: MEDLINE/PubMed, Google Scholar, and International Pharmaceutical Abstracts were searched through January 2014 using the search terms doxycycline, tetracycline, and Clostridium difficile. STUDY SELECTION AND DATA EXTRACTION: Relevant studies, case reports, and review articles were screened for inclusion. Bibliographies of articles were extensively reviewed for additional sources. DATA SYNTHESIS: Doxycycline is a second-generation tetracycline antibiotic indicated for use in a variety of clinical syndromes and has activity against aerobic Gram-positive and -negative, anaerobic, and atypical bacteria as well as protozoan parasites. Although not used therapeutically to treat CDI, doxycycline may prevent or attenuate the virulence factors of toxigenic C difficile. Current literature does not indicate an increased risk of development of CDI with doxycycline use. In 3 retrospective studies, the use of doxycycline was associated with a protective effect. CONCLUSIONS: Doxycycline has been shown to have potential protective effects against the development of CDI. Although further randomized placebo-controlled studies are needed, available data suggest that the use of doxycycline in place of alternative antimicrobials, when appropriate, may be a useful antimicrobial stewardship strategy aimed at reducing the incidence of CDI.

Evaluation of venous thromboembolism prophylaxis in patients with chronic liver disease.

BACKGROUND: The incidence of venous thromboembolism (VTE) in chronic liver disease (CLD) patients has been reported to be 0.5% to 6.3%. Studies report the use of thromboprophylaxis in CLD patients as suboptimal, with at least 75% of patients receiving no prophylaxis. OBJECTIVE: To describe the use of VTE prophylaxis in CLD patients. DESIGN: A retrospective review. SETTING: Tertiary-care academic medical center. PATIENTS: Inpatient admissions from August 2009 through July 2011 with CLD diagnosis. INTERVENTION: None. MEASUREMENTS: Initiation and type of thromboprophylaxis, incidence of VTE, bleeding events, hospital length of stay, in-hospital mortality, 30-day readmission for VTE. RESULTS: Of the 410 patients included, 225 (55%) patients received thromboprophylaxis. For patients with international normalized ratio (INR) >2.0, a significant decrease in overall thromboprophylaxis use and pharmacologic prophylaxis use was seen compared to those with INR 1.4 to 2.0 (P = 0.013 and P < 0.001, respectively). Overall incidence of VTE was 0.7%. Fifteen bleeding events occurred (3.7%): 9 on mechanical prophylaxis, 1 on pharmacologic, 3 on combination, and 2 with no prophylaxis. The majority of patients experiencing a bleeding event had an INR >2.0 (P = 0.001). CONCLUSION: The use of thromboprophylaxis in CLD patients is higher in our study than previous reports but remains suboptimal. Use of VTE pharmacologic prophylaxis does not appear to increase bleeding in CLD patients with INR ≤2.0. Further studies are needed to provide additional safety data.