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The biochemical basis of lower metmyoglobin reducing activity (MRA) in high-oxygen modified atmospheric packaged (HiOx-MAP) beef than those in vacuum and polyvinyl chloride (PVC) packaging is not clear. To explore this, the effects of lipid oxidation products with varying carbon chain length on lactate dehydrogenase (LDH) and NADH-dependent metmyoglobin reductase activity were evaluated. Surface color, MRA, and lipid oxidation of beef longissimus lumborum steaks ( n = 10) were measured during 6-day display. Further, two enzymes, LDH and NADH-dependent metmyoglobin reductase ( n = 5), critical for MRA were incubated with or without (control) lipid oxidation products of varying carbon chain length: malondialdehyde (3-carbon), hexenal (6-carbon), and 4-hydroxynonenal (9-carbon). Steaks in HiOx-MAP had greater ( P < 0.05) redness than vacuum and PVC, but had lower ( P < 0.05) MRA and greater ( P < 0.05) lipid oxidation on day 6. LDH and NADH-dependent metmyoglobin reductase activities were differentially influenced by lipid oxidation products ( P < 0.05). The results indicate that the difference in reactivity of various lipid oxidation products on LDH (HNE > MDA = hexenal) and NADH-dependent metmyoglobin reductase (HNE = MDA > hexenal) activity could be responsible for lower MRA in HiOx-MAP.

Defaulting to single-lumen peripherally inserted central catheters (PICCs) ordered from non-critical care units resulted in a sustained reduction in PICC-related complications. This system of care is transferrable to other institutions, with potential for improved patient safety and efficiency in outpatient parenteral antimicrobial therapy clinics.

Objective: Shortened quality-of-life (QOL) tools are advantageous in palliative care patients. Development of such tools begins with the identification of issues relevant to a population. The purpose of this study was to identify the most important items of the Functional Assessment of Chronic Illness Therapy-Palliative Care (FACIT-Pal) to create an abbreviated questionnaire for future palliative care trials., Methods: A convenience sample of patients and health care professionals (HCPs) assessed the relevance of each item of the FACIT-Pal and whether they would include the item in a final questionnaire. Patients and HCPs identified their top 10 most important issues and were asked whether items were inappropriate, upsetting, or irrelevant; a shortened questionnaire was generated from this input., Results: Sixty patients and 56 HCPs participated. The median score in the Karnofsky Performance Scale (KPS) of patients was 70, and the majority of HCPs were radiation oncologists. The 46-item questionnaire was shortened to 14 questions, retaining several items from the Functional Assessment of Cancer Therapy-General (FACT-G) as well as issues pertaining specifically to palliative care patients. Items within the emotional, physical, and functional well-being subscales were retained along with those for various symptoms including constipation, nausea, dyspnea, and sleep. No new content beyond what is covered by the FACIT-Pal was identified consistently by either HCPs or patients. Similarly, no item was consistently rated as being inappropriate, upsetting, or irrelevant in the 14-item questionnaire., Conclusion: The FACIT-Pal-14, a shortened 14-item questionnaire has been generated for the palliative care population. Future studies should complete psychometric validation of this instrument for the assessment of QOL in palliative care patients.

Background: To examine the agreement of Health Care Providers (HCPs) and patients' evaluation of quality of life on the Functional Assessment of Chronic Illness therapy - Palliative care module (FACIT-Pal) scale., Methods: Sixty advanced cancer patients and fifty-six health care providers involved in their care at Sunnybrook Health Sciences Centre completed a modified version of the FACIT- Pal. In the survey, patients and HCPs indicated the 10 top issues affecting the quality of life of patients with advanced cancer most profoundly. The percentage of participants selecting each item as one of their 10 most relevant items was calculated in HCPs and patients., Results: There were differences in relative rankings of QOL issues among patients and HCPs. Among the top 10 items which were identified from both patients and HCPs, there were differences in the rankings. Patients ranked emotional support from family (40.9%) as most important followed by pain (38.6%), lack of energy (31.8%) and able to enjoy life (29.6%). HCPs ranked in the following order: pain (73.2%), lack of energy (63.4%), nausea (51.2%) and dyspnea (51.2%) whereas patients rated nausea at 18.2 % and dyspnea at 9.09%., Conclusion: There is a discrepancy between scores of patients and HCPs as they may prioritize differently. HCPs tended to put more emphasis on physical symptoms, whereas patients had emotional and global issues as priorities., Competing Interests: None.

A squaraine rotaxane scaffold with four alkyne groups is readily converted into a range of dendritic architectures using high-yielding copper-catalyzed alkyne azide cycloaddition (CuAAC) chemistry. A convergent synthesis approach is more efficient than a divergent pathway. Dendritic squaraine rotaxanes with peripheral amine groups can be further functionalized to produce multivalent deep-red fluorescent derivatives that exhibit high brightness and outstanding chemical stability in biological solution. The surface groups on these functionalized fluorescent dendrimers include guanidinium, mannose, and phosphatidylcholine.

Purpose: The case of a patient who developed acute renal failure, gastrointestinal bleeding, and cardiac arrhythmia after receiving arsenic trioxide for the treatment of acute promyelocytic leukemia (APL) is described., Summary: An 84-year-old Caucasian woman with a history of osteoarthritis sought medical attention for relapse of her APL, which had initially been diagnosed approximately 30 months earlier. Complete remission was accomplished with three cycles of i.v. daunorubicin for 3 days and oral tretinoin for 28 days. After 19 months in remission, she was noted to have increased bruising and blood test values consistent with APL relapse. Two additional trials of oral tretinoin were unsuccessful, and arsenic trioxide was initiated at a daily dosage of 0.15 mg/kg of actual body weight. Less than 24 hours after receiving arsenic trioxide, the patient had "bile-like emesis" and her hemoglobin level decreased. Upper gastrointestinal bleeding was suspected and managed aggressively with transfusions of platelets and fresh frozen plasma and i.v. desmopressin. She became anuric, and her serum creatinine level more than doubled. Hemodialysis was started due to a sudden increase in potassium and fluid overload that did not respond to i.v. furosemide. One hour after hemodialysis, the patient was found pulseless and unresponsive by nursing staff. The cardiac arrest team rapidly responded and noted atrial fibrillation with a fast ventricular rate. Postresuscitation, the patient was transferred to the intensive care unit. Despite aggressive life-support therapy, the patient remained unresponsive., Conclusion: An 84-year-old woman developed acute renal failure, gastrointestinal bleeding, and cardiac arrhythmia after receiving arsenic trioxide for the treatment of APL.

We report the first case of infection caused by Graphium basitruncatum in a man with acute leukemia who developed persistent fungemia and skin lesions. G. basitruncatum, a member of the Microascaceae, is phylogenetically and morphologically distinct from Graphium penicillioides and the opportunistic pathogens Scedosporium apiospermum (Pseudallescheria boydii) and Scedosporium prolificans.

Objective: To identify the relationship between the use of anticoagulants, specifically heparin, and the development of iliacus and psoas muscle hematoma. Three patients with unstable angina who developed groin pain while on heparin anticoagulation are presented. Patients who are anticoagulated with heparin are at increased risk of developing iliacus or psoas hematoma, manifesting a wide range of symptoms from groin pain to massive bleeding and shock. Identification of these patients is crucial in cardiology practice., Data Sources: MEDLINE searches under "iliacus', "psoas' and "iliopsoas hematoma' were conducted and cross-referenced with patients on anticoagulant therapy. Only English language articles were included., Study Selection: The search covered January 1966 to February 1995. Fifty-one articles were studied., Data Synthesis: The current literature suggests that anticoagulation can cause iliacus or psoas muscle hematoma and usually presents as femoral neuropathy. However, the presented case reports provide evidence that an earlier manifestation of this entity is the development of groin pain, and that early identification is crucial to improving patient morbidity and mortality., Conclusions: Patients who are on heparin anticoagulation should be carefully monitored for development of groin pain or leg weakness. In such cases, early recognition of possible iliacus or psoas hematoma should be by abdominal ultrasound or computed tomography, and heparin anticoagulation should be modified according to its clinical requirement.