Low-Dose Ketamine Infusion for Adjunct Management during Vaso-occlusive Episodes in Adults with Sickle Cell Disease: A Case Series.

The optimal management of recurrent painful episodes in individuals living with sickle cell disease (SCD) remains unclear. Currently, the primary treatment for these episodes remains supportive, using fluids and intravenous opioid and anti-inflammatory medications. Few reports have described the use of adjunct subanesthetic doses of ketamine to opioids for treatment of refractory pain in SCD. This article reports a retrospective case series of five patients admitted to the intensive care unit (ICU) with prolonged vaso-occlusive episodes (VOEs). Patients were treated with a continuous-infusion of low-dose ketamine (up to 5 µg/kg/min) after insufficient pain control with opioid analgesic therapy. Outcomes studied included impact on opioid analgesic use, a description of ketamine dosing strategy, and an analysis of adverse events due to opioid or ketamine analgesia. Descriptive statistics are provided. During ketamine infusion, patients experienced a lower reported pain score (mean numeric rating scale [NRS] score 7.2 vs. 6.4), reduced opioid-induced adverse effects, and decreased opioid dosing requirements (median reduction of 90 mg morphine equivalents per patient). The average duration of severe pain during admission prior to ketamine therapy was 8 days. Only one of five patients reported an adverse effect (vivid dreams) secondary to ketamine infusion. The Richmond Agitation Sedation Scale (RASS) was assessed throughout therapy, with only one patient experiencing light drowsiness. Low-dose ketamine infusion may be considered as an adjunct analgesic agent in patients with vaso-occlusive episodes who report continued severe pain despite high-dose opioid therapy, particularly those experiencing opioid-induced adverse effects.

Voriconazole concentration monitoring at an academic medical center.

PURPOSE: Results of a study of the relationship among voriconazole dosages, serum concentrations, adverse effects, and clinical outcomes are presented. METHODS: A retrospective chart review was conducted that included all patients who had at least one voriconazole concentration drawn between July 1, 2009, and August 15, 2014, at a single academic medical center. The primary outcome was the proportion of patients with initial voriconazole concentrations in the target range. RESULTS: Forty-seven of 88 patients (53%) had an initial voriconazole concentration within the target range, 27% (24 of 88) of patients had a concentration above the range, and 19% (17 of 88) had a concentration below the range. Sixty-seven percent of patients with above-target concentrations had adverse effects. Voriconazole was discontinued in 9% of patients, and dosages were reduced in 11% of patients because of adverse effects. Voriconazole for treatment versus prophylaxis was analyzed in a subgroup, as was obesity and nonobesity. Twenty-four percent of patients died during their hospital admission, and 14% were not discharged on voriconazole therapy. The within-target group had the highest proportion of patients discharged on voriconazole and the lowest proportion of deaths. CONCLUSION: A retrospective study in one institution revealed that the first measured voriconazole concentration was within the target range in 53% of patients and that dosage was modified in only 51% of patients whose concentration was outside of that range. The majority of patients with above-target concentrations had an adverse effect, and this result was particularly common in patients with a body mass index of ≥35 kg/m(2).

High-Dose Sedation and Analgesia During Extracorporeal Membrane Oxygenation: A Focus on the Adjunctive Use of Ketamine.

Use of ketamine in patients requiring extracorporeal membrane oxygenation (ECMO) has rarely been reported, and the optimal dosing strategy remains unclear. A patient admitted with hypoxic respiratory failure required ECMO in addition to continuous infusion of low-dose ketamine following titration of opioid and sedative medications to high doses. After initiation of ketamine, infusion rates of opioids and/or sedatives were maintained or decreased. Recorded Richmond Agitation-Sedation Scale (RASS) scores were -4 to -5 and documented pain scores were 0. No adverse effects were reported while receiving low-dose ketamine. This case illustrates that use of low-dose ketamine infusion may be a useful adjunctive agent in patients receiving ECMO and high-dose opioid and sedative medications.

Impact of Norepinephrine Shortage on Outcomes in Patients with Septic Shock.

PURPOSE: With the previous norepinephrine shortage, alternative agents were required to treat patients with septic shock. This retrospective study evaluated whether the shortage of norepinephrine had an adverse effect on patients admitted to the intensive care unit with a diagnosis of severe sepsis or septic shock. METHODS: This was a retrospective chart review, which compared patients who received norepinephrine versus those who did not. Eligible patients were those ≥ 18 years old who were admitted to an intensive care unit with a diagnosis of sepsis and were initiated on a vasopressor to maintain hemodynamic stability. The specific primary endpoint was whether using norepinephrine versus other vasopressors had an effect on ICU length of stay. Secondary outcomes included mortality, blood pressure, mean arterial pressure, development of renal insufficiency, and vasopressor requirements. RESULTS: There were 288 patients screened and 214 patients who met the inclusion criteria (norepinephrine group=106 and nonnorepinephrine group=108). After accounting for potential differences in disease severity (APACHE II score), age, weight and gender, there was no difference in ICU length of stay (p=0.4); however, the odds of survival were 5.9 (95% CI: 3.1 to 11.1) times higher for those in the non-norepinephrine group (p<0.0001). CONCLUSION: Based on this retrospective analysis, patients that did not receive norepinephrine had a similar ICU LOS but had a higher rate of survival. The norepinephrine shortage did not have an adverse effect on patient outcomes.

Clinical management strategies and implications for parenteral nutrition drug shortages in adult patients.

Drug shortages affect every aspect of patient care, including and especially, nutrition therapy. The purpose of this review is to discuss current parenteral nutrition-related drug shortages, including causes and duration of the disruptions, and provide recommendations for managing specific nutritional shortages that minimize negative patient care outcomes. A general framework for the management of current and future shortages is presented.