Molecular epidemiology of a Pseudomonas aeruginosa hospital outbreak driven by a contaminated disinfectant-soap dispenser

BACKGROUND AND OBJECTIVE

Pseudomonas aeruginosa infection represents a main cause of morbidity and mortality among immunocompromised patients. This study describes a fatal epidemic of P. aeruginosa that occurred in a hematology unit in Italy.

METHODS

Retrospective cohort study, prospective surveillance, auditing, extensive testing on healthcare workers and environmental investigation were performed to define the dynamics and potential causes of transmission. RAPD, macrorestriction analyses and sequence typing were used to define relationships between P. aeruginosa isolates.

RESULTS

Eighteen cases of infection were identified in the different phases of the investigation. Of these, five constitute a significant molecular cluster of infection. A P. aeruginosa strain with the same genetic fingerprint and sequence type (ST175) as clinical isolates strain was also isolated from a heavily contaminated triclosan soap dispenser.

DISCUSSION AND CONCLUSIONS

Our results are consistent with the hypothesis that patients became indirectly infected, e.g., during central venous catheter handling through contaminated items, and that the triclosan soap dispenser acted as a common continuous source of P. aeruginosa infection. Since P. aeruginosa is intrinsically unsusceptible to triclosan, the use of triclosan-based disinfectant formulations should be avoided in those healthcare settings hosting patients at high risk of P. aeruginosa infection.

[From disease's treatment to global care of the child with acute lymphoblastic leukemia]

The history of the treatment of childhood acute leukemia is a meaningful model of the ethical, bioethical and organizational implications of the technical progress in medicine. This experience provides indications and very useful tools to face the main topics of modern medicine: the risk of intense medicalization to the detriment of the quality of the care, the importance of psycho-emotive, ethical and spiritual aspects in the doctor-patient relationship, etc. The Authors report the difficulties and progresses until and after the first cures of children with leukemia in the Pediatric Clinic of the University "La Sapienza" of Rome (1964), the new features of treated leukemia (the real disease of cured child") and the psycho-emotive involvement of the pediatric staff a "parallel disease"). The necessity of a continuous activity aimed at the adaptation of services to scientific and medical progress and to the necessity of humanization of procedures and environment is stressed.

[On the restructuring of the blood service]

The issue of the restructuring of the blood service is discussed. The actuality and and the need of this process is substantiated. Four alternative organizational models of the blood service institutions (the centralized model, the regional model, the model based of the hospital ground and the mix model) acclaimed by the international community are proposed to be adapted to the Russia conditions. The model of the blood service of the Sverdlovsk oblast is discussed.

Improving outcomes for children with cancer in low-income countries in Latin America: a report on the recent meetings of the Monza International School of Pediatric Hematology/Oncology (MISPHO)-Part I

The difference in survival for children diagnosed with cancer between high- and low-income countries (LIC) continues to widen as curative therapies are developed in the former but not implemented in the latter. In 1996, the Monza International School of Pediatric Hematology/Oncology (MISPHO) was founded in an attempt to narrow this survival gap. During its sixth and seventh meetings, members recognized the problem of lack of affordability of essential drugs to treat childhood cancer in many LIC, and initiated an advocacy program. In 1998, MISPHO spawned a collaboration of Central American pediatric oncology centers: the Asociación de Hemato-Oncología Pediátrica Centroamericana (AHOPCA). AHOPCA members reported preliminary findings from several of the 10 cooperative protocols that are currently in progress. In 2003, a second regional collaborative group was formed that includes seven centers in South America. Twinning programs between MISPHO centers and centers in high-income countries (HIC) have proven invaluable to harness the resources of these centers to improve pediatric oncology care in LIC. MISPHO educational efforts include oncology nursing, supportive care, cancer-specific updates, epidemiology, and clinical research methods. Educational efforts are facilitated by educational content and online conferencing via www.cure4kids.org. Identifying preventable causes of abandonment of therapy and documenting the nutritional status of patients treated at MISPHO centers are areas of active research.

Hurricane Katrina's Impact on Pediatric and Adult Patients with Sickle Cell Disease

OBJECTIVE

Hurricane Katrina, making landfall in the U.S. in late August 2005, disrupted the medical infrastructure of New Orleans. We hypothesized that Hurricane Katrina measurably affected the ability of patients with sickle cell disease (SCD) to receive necessary and adequate health care. Differences in health care delivery among children and adults in New Orleans prior to the hurricane prompted our interest in these two groups.

METHODS

In May 2006, an anonymous survey was administered via either telephone or written questionnaire to patients in the greater New Orleans, Louisiana area with SCD and/or their guardians. The survey was intended to gauge patients' access to and satisfaction with specialized health care in the months following Hurricane Katrina.

CONCLUSIONS

Adult patients with SCD who relied almost exclusively on New Orleans' main public hospital (Charity Hospital) for specialized sickle cell services reported significant frustration/dissatisfaction with their medical care eight months after the storm. In contrast, pediatric patients with SCD and their guardians, who rarely received care within the public hospital system, reported more satisfaction with their care. There was a statistically significant difference between the two groups in their responses to the perception of quality of their health care.

[Centralization versus decentralization. Hematology]

Clinical haematology is the result of teamwork among dedicated specialists in pathology, molecular diagnostics, imaging, radiotherapy and the haematologist, who in turn can focus on only a limited fraction of the various and highly complex diseases that together constitute clinical haematology. The treatment of patients should be centralized in departments large enough to permit internal subspecialization and to provide expert service focused on haematology. No more than three such hematology centers are needed in Denmark.

Safe and efficacious use of procedural sedation and analgesia by non-anesthesiologists in a pediatric hematology-oncology unit

BACKGROUND

Children often require relief of pain and anxiety while undergoing diagnostic and therapeutic procedures. Procedural sedation and analgesia (PSA) is the safe and effective control of pain, anxiety and motion so as to allow a necessary procedure to be performed and to provide an appropriate degree of memory loss or decreased awareness.

OBJECTIVE

To prospectively describe procedural sedation and analgesia as performed in the pediatric oncology unit and to report the success of sedation and the incidence of complications.

METHODS

IV Midazolam and IV Ketamine were used for PSA in pediatric oncology patients undergoing painful procedures.

RESULTS

Between June 2004 and December 2004, 55 diagnostic and therapeutic procedures were performed using PSA in 16 children. There were 9 boys and 7 girls with a median age of 11 years. Twelve patients had hematolymphoid malignancies and 4 patients had solid tumors. The indication for PSA were bone marrow aspiration and or biopsy in 7 patients, therapeutic lumbar puncture in 43 patients, bone marrow aspiration and lumbar puncture in 4 patients and skin biopsy in 1 patient. All 55 procedures were successfully completed. Adverse events occurred in 15 (27%) episodes and included transient drop in oxygen saturation, vomiting, dizziness and disinhibition with crying spells. Average time to arousable state and full recovery was 22 minutes and 31 minutes respectively. None of the patients complained of post procedure pain nor recalled the procedure at the follow up visit.

CONCLUSION

Procedural sedation and analgesia using midazolam and ketamine is a safe and efficient method of limiting anxiety and procedure related pain and can be successfully administered by non-anaesthesiologists. The complication rate is low and can be easily managed.

[The Haemolymphopathology Italian Group (H.I.G.): an essential resource for the new technical and organization problems troubling modern haemolymphopathology diagnostics]

Recently, many progresses have been recorded in the molecular and histogenetic characterization of the haematopoietic and lymphoid tumours, resulting in important classifying changes. As a consequence, the exact definition of lymphoma subtype requires an integration between traditional morphologic "expertise" and several bio-functional data obtained from advanced and complex ancillary techniques (immunohistochemistry, molecular biology and cytogenetics). At the same time, the data provided by gene expression profiling studies are going to deeply modify the therapies in haematological cancers. These studies are expected to allow the achievement of single-patient-tailored genic therapy; for this reason it is necessary to get biological samples of good quality. Indeed, while these progresses contribute to highlight the pathologist's diagnostic role, they should make us reflect on the state of the art of the Italian haemolymphopathology diagnostics and on its ability to cope up with the new challanges. The aim of this article is to outline a realistic picture of the present condition, and to explain the reasons for setting up, inside SIAPEC-IAP, the Haemolymphopathology Italian Group (H.I.G.). The purpose of H.I.G. will be twofold: first of all, scheduling of a series of projects so as to the haemolymphopathological diagnostic standardization; secondly, building a national network among all the pathologists involved in this exciting and complex field of the anatomic pathology.

Quality management for clinical trials within the German Competence Network Paediatric Oncology and Haematology

The German 'Competence Network Paediatric Oncology and Haematology' aims at improving the structure of paediatric oncology and haematology as a whole, focussing in particular on the quality of clinical trials and study co-ordinating centres. This comprises the following measures: (1) Employment of research and trial assistants in order to improve the quality of documentation and study management in the participating hospitals. (2) Development of an internet portal to provide medical information for non-professionals, for patients and their families as well as for health professionals. (3) The project group 'Central Trial Support' supports study centres during the process of writing and examining new treatment protocols so that they are in compliance with the Good Clinical Practice criteria, formal criteria, legal requirements and statutory provisions. This group currently produces a structural standardisation of study protocols and case record forms in order to improve their usability. The 'Competence Network Malignant Lymphomas' is a project with similar aims and will be outlined for comparison.

Physicians' attitude and practices in sickle cell disease pain management

Many physicians believe that patients with sickle cell disease (SCD) are more likely to become addicted to pain medication than are other patient populations. This study hypothesizes that physicians' attitudes towards addiction in patients with SCD affects pain management practices. The Physician Attitudes Survey was sent to 286 physicians at seven National Institutes of Health-funded university-based comprehensive sickle cell centres. The survey assessed demographic information; and physician's attitudes toward and knowledge of pain, pain treatment, and drug addiction and abuse. Significant Pearson product-moment correlations were found between attitudes towards pain and beliefs regarding addiction to prescribed opioids. Physicians reported varied pain management strategies, however, many believe that attitudes toward addiction and to patients in pain crises may result in undertreatment of pain. These results indicate that physicians might benefit from additional education regarding sickle cell disease, addiction to pain medication, the pharmacology of opioids, and the assessment and treatment of pain.

A survey of clinical productivity and current procedural terminology (CPT) coding patterns of pediatric hematologist/oncologists

BACKGROUND

Subspecialty-specific normative values for clinical productivity of practicing pediatric hematologist/oncologists have not been well established. This information could be a useful adjunct in administrative decision-making in areas such as necessary levels of physician staffing and development of compensation plans.

METHODS

Current procedural terminology (CPT) coding information was obtained from 27 pediatric hematology/oncology groups. Clinical productivity was assessed by overall number of patient encounters and the total number of physician work relative value units (RVU) as defined by the resource-based relative value scale. The average physician productivity within each individual program was calculated. To determine uniformity of CPT coding, an additional survey solicited mock patient encounter documentation and CPT coding for a simple clinical vignette.

RESULTS

A broad range of clinical productivity was observed for both numbers of patient encounters and RVU. Evaluation of the CPT coding data of the surveyed groups revealed differences in usage of certain evaluation and management (E/M) codes and procedural and specimen interpretation codes. Within individual categories of E/M service codes, a wide variation in assigned CPT code levels was also observed. This observation was supported by differences in the E/M coding for the clinical vignette.

CONCLUSIONS

Assessment and tracking of physician productivity can provide useful information for the administrative management of pediatric hematology/oncology programs. Caution must be exercised, however, when making productivity comparisons with other subspecialties or even between pediatric hematology/oncology programs. Such comparisons should take into account the number of patient encounters, characteristics of E/M coding patterns, the use of physician extenders, as well as overall RVU production.

The Clinical Thrombosis Center and Clinical Thrombologist: A New US Health Systems Paradigm for the Management of Venous Thromboembolic Disease

New paradigms for the diagnosis, prophylaxis, acute treatment, and ongoing management of patients with venous thromboembolic disease (VTE), a better understanding of the genotypic and phenotypic mechanisms of thrombophilic states, and the possibility of a greatly expanded armamentarium of antithrombotic therapies are necessitating a more formalized and systematic approach to VTE management. This has required many US healthcare institutions to develop piecemeal approaches in management models for VTE utilizing local champions from a variety of subspecialties. Development of a formalized Clinical Thrombosis Center from an already established Anticoagulant Management Service utilizing a clinical thrombologist, a new role for a physician who has developed expertise in anticoagulation and VTE management, presents a new paradigm in which this disease may be approached at a formalized, institutional level. Thus the clinical thrombologist working through a Clinical Thrombosis Center can develop a system-of-care approach to link the rapid advances in the field of thromboembolism to clinical applications, formulate evidence-based disease management guidelines, and conduct patient-oriented translational clinical research in VTE.

[The transfusion medicine program in Cuba]

Cuba's Transfusion Medicine Program (TMP) is a subsystem of the country's National Health System. The TMP's objective is to ensure hemotherapy with blood that is safe and sufficient for all the individuals who need it. The TMP subsystem is made up of the National Commission on Transfusion Medicine, the Institute of Hematology and Immunology, 37 clinical services, 44 blood banks, 120 collection centers, 19 mobile units, and 37 blood certification laboratories. Additional facilities include a laboratory for plasma separation, a laboratory that produces leukocyte interferon and transfer factor, and two laboratories that produce reagents for blood classification and blood diagnosis symptoms. In Cuba, blood donation is voluntary. Since 1997 approximately 5% of the population per year has donated blood, thus meeting the goal recommended by the Pan American Health Organization of one voluntary blood donation annually for every 20 persons. During 2002, 563,204 blood donations were received, and there were 445,898 transfusions of blood or blood components. All donations are individually screened for HIV 1 and 2, hepatitis B, hepatitis C, and syphilis, thus meeting the country's current regulations. In 2002 these screening measures led to discarding, respectively, 0.12%, 0.60%, 0.71%, and 1.8% of the blood donations. Although the prevalence of human T-cell lymphotropic virus I and II in Cuba is very low, this test will soon be added to the screening process.

[Peru's experience with a national blood banking program]

This paper describes Peru's experiences with its National Blood Banking Program. Until the mid-1990s, the country faced a host of problems, including the lack of a legal framework to regulate blood banks, a high maternal mortality rate due to a shortage of blood, virtually no voluntary donations, a high risk of infection from transfusions, the use of only whole blood for transfusion, serious disorganization in the blood banks, deficiencies in blood bank supervision and control, no training programs, indifference on the part of health officials, frequent selling of blood, and limited community awareness. Subsequently, a strategic plan was prepared that made it possible to solve many of those problems. Legal instruments were prepared; the rate of voluntary donations rose from 0% to 19.5%; the safety of the blood was improved through compulsory screening of all donated blood units for seven markers of infectious diseases, as well as by placing a national seal of quality on all screened units. The availability of blood doubled, thus meeting 70% of the need; sales of blood decreased; and the use of blood components was improved, with 80% of the blood being fractionated. In addition, supervisory control of 100% of the blood banks in the country was achieved, a national registry was established, the cost-benefit relationship for blood units was improved through centralized screening, internal and external quality control was made mandatory, and pro-donation campaigns led to commitments from civil society. While important, all these achievements represent just a first step. This is especially true given that developing the National Blood Banking Program required the participation of outside organizations, such as the Pan American Health Organization, whose support, together with the experience provided by other countries, was key. The Program is facing a number of new challenges, and the progress that has been achieved could be threatened if current activities stagnate or if officials become complacent.