Micafungin in the treatment of candiduria: A case series.

Echinocandin antifungal agents are not routinely recommended for the treatment of candiduria due to low urine concentrations and a paucity of clinical data supporting this indication. This report presents five cases describing the use of micafungin for the treatment of candiduria. Each patient received parenteral micafungin for a minimum of 6 days and had resolution of baseline fungal within 30 days of treatment completion.

Management of pulmonary vasodilator therapy in patients with pulmonary arterial hypertension during critical illness.

Pulmonary arterial hypertension (PAH) is commonly treated with pulmonary arteriolar vasodilator therapy. When a patient on PAH medication is admitted to intensive care, determining how to manage their medication during the critical illness is often complicated. There may be considerations related to the inability to take medication by mouth, related to acute renal failure or acute liver injury, related to altered mental status or delirium, or related to hypotension and bacteremia. Decisions of how to manage these medications can have a major impact on the patient's clinical course. Presently, provider experience is the major tool in navigating the decisions regarding these medications. In this review, we offer our recommendations of how to manage PAH patients with critical illness who are on PAH medications. These recommendations include how to deliver medications via feeding tubes, how to dose medications in the setting of acute renal failure or acute liver failure, and how to manage medications during hypotension or when a tunneled catheter needs to be removed.

Subtherapeutic linezolid concentrations in a patient with morbid obesity and methicillin-resistant Staphylococcus aureus pneumonia: case report and review of the literature.

OBJECTIVE: To report a case of subtherapeutic linezolid concentrations in a patient with morbid obesity. CASE SUMMARY: A 34-year-old male with morbid obesity (265 kg, body mass index 82 kg/m(2)) was admitted for severe sepsis due to respiratory failure requiring emergent intubation and treatment of community-acquired pneumonia. Admission tracheal aspirate culture revealed methicillin-resistant Staphylococcus aureus (MRSA) for which vancomycin was prescribed. Therapy subsequently was changed to linezolid, because the patient's clinical status worsened, with significant hypoxia (partial pressure of arterial oxygen/fraction of inspired oxygen [PaO2/FiO2] ratio 145), increasing leukocytosis (white blood cell count from 10,800/µL on admission to 15,400/µL on hospital day 6), and persistent fever (38.3 °C). After 48 hours of linezolid monotherapy, the patient remained febrile with continued leukocytosis, worsening hypoxemia, and a persistently positive MRSA culture from a repeat endotracheal aspirate. Linezolid serum concentrations were obtained and vancomycin was reinstituted, after which the patient began to improve (afebrile, improving PaO2/FiO2 ratio, decreasing leukocytosis). On hospital day 12, the patient removed his endotracheal tube, and a sputum sample was obtained for culture. The patient's clinical status subsequently declined, prompting addition of cefepime to his antibiotic regimen. This sputum culture revealed not only MRSA, but also quinolone-resistant Escherichia coli. After completing treatment for both organisms the patient was discharged home. DISCUSSION: Limited data on linezolid dosing in the morbidly obese population show lower serum drug concentrations than those in nonobese patients, but no clinical failure has been reported when treating MRSA skin and soft tissue infections or MRSA tracheitis. In our patient, low steady-state linezolid serum concentrations (peak 4.13 µg/mL [reference 15-27] and trough 1.27 µg/mL [reference 2-9]) were thought to contribute to his poor clinical response. CONCLUSIONS: To our knowledge, this is the first report of subtherapeutic linezolid concentrations correlated with decreased clinical effectiveness when during treatment of MRSA pneumonia in a patient with morbid obesity.

Tolerability and safety of enteral nutrition in critically ill patients receiving intravenous vasopressor therapy.

BACKGROUND: Enteral nutrition (EN) is recommended within the first 24-48 hours following admission to an intensive care unit (ICU) once resuscitation and hemodynamic stability have been achieved; however, hemodynamic stability is not well defined. OBJECTIVE: To evaluate the tolerability and safety of EN in critically ill patients receiving intravenous (IV) vasopressor therapy. METHODS: A retrospective medical record review was conducted in an urban academic medical center and included adult ICU patients from 2011 who received concomitant EN and IV vasopressor therapy for ≥1 hour. EN tolerance was defined as an absence of gastric residuals ≥300 mL, emesis, positive finding on abdominal imaging, and evidence of bowel ischemia/perforation. RESULTS: Two hundred fifty-nine patients received 346 episodes of concomitant EN and IV vasopressor therapy. Overall EN tolerability was 74.9%. Adverse events included rising serum lactate (30.6%), elevated gastric residuals (14.5%), emesis (9.0%), positive finding on kidney/ureter/bladder radiograph (4.3%), and bowel ischemia/perforation (0.9%). An inverse relationship was found between maximum norepinephrine equivalent dose and EN tolerability (12.5 mcg/min for patients who tolerated EN vs 19.4 mcg/min, P = .0009). This relationship remained statistically significant after controlling for other variables (P = .019). Patients who tolerated EN were less likely to have received dopamine (63.8% vs 77.6%, P = .018) or vasopressin (58.9% vs 77.9%, P = .0027). These patients received concomitant therapy for less time and received more nutrition. CONCLUSIONS: Most patients receiving IV vasopressor therapy tolerate EN. Tolerability was related to the maximum cumulative vasopressor dose and may be related to the specific vasopressor administered.

Epoprostenol use for pulmonary arterial hypertension in the palliative care setting.

Prostacyclin analogues such as epoprostenol (Flolan®) are commonly used in the treatment of pulmonary arterial hypertension (PAH). However, their complex administration and significant cost may limit the access that patients with PAH have to palliative and hospice care. We herein report our experience using epoprostenol in a dedicated palliative care unit and present our inpatient protocol for the drug's administration.

Role of vasopressor administration in patients with acute neurologic injury.

INTRODUCTION: Pharmacologic blood pressure elevation is often utilized to prevent or treat ischemia in patients with acute neurologic injury, and routinely requires administration of vasopressor agents. Depending on the indication, vasopressor agents may be administered to treat hypotension or to induce hypertension. METHODS: Although numerous guideline statements exist regarding the management of blood pressure in these patients, most recommendations are based largely on Class III evidence. Further, there are few randomized controlled trials comparing vasopressor agents in these patients and selection is often guided by expert consensus. RESULTS: We discuss the clinical evidence regarding vasopressor administration for blood pressure management in patients with acute neurologic injury. The effect of various vasopressors on cerebral hemodynamics is also discussed. CONCLUSION: Although high-quality clinical data are scarce, the available evidence suggests that norepinephrine should be considered as the vasopressor of choice when blood pressure elevation is indicated in patients with acute neurologic injury.