DNR directives are established early in mechanically ventilated intensive care unit patients

Purpose

Setting treatment goals in the intensive care unit (ICU) often involves resuscitation decisions. Our objective was to study the rate of establishing do-not-resuscitate (DNR) directives, determinants, and outcomes of those directives for mechanically ventilated patients.

Methods

In a multicentre observational study, we included consecutive adults with no DNR directives within 24 hr of ICU admission who were mechanically ventilated for at least 48 hr. We identified the rate with which DNR directives were established, and factors associated with these directives.

Results

Among 765 patients, DNR directives were established for 231 (30.2%) patients; 143 (62.1%) of these were established within the first week. Factors independently associated with a DNR directive were: patient age [> 75 yr (hazard ratio [HR] 2.3, 95% confidence interval 1.5–3.4], 65 to 74yr(HR 1.8, 1.2–2.7), 50 to 64 yr (HR 1.4, 1.0–2.2) relative to < 50 yr); medical rather than surgical diagnosis (HR 1.8, 1.3–2.5); multiple organ dysfunction score (HR 1.7 for each five-point increment, 1.4–2.0); physician prediction of ICU survival [< 10% (HR 15.0, 6.7–33.6)], 10 to 40% [(HR 5.0, 2.3–11.2), 41 to 60% (HR 4.0, 1.8–9.0) relative to > 90%]; and physician perception of patient preference to limit life support (no advanced life support [(HR 5.8, 3.6–9.4) or partial advanced life support (HR 3.2, 2.2–4.6) compared to full measures].

Conclusion

One third of mechanically ventilated patients had DNR directives established early during their ICU stay after the first 24 hr of admission. The strongest predictors of DNR directives were physician prediction of low probability of survival, physician perception of patient preference to limit life support, organ dysfunction, medical diagnosis and age.     

Health-related quality of life following operative treatment of unstable ankle fractures: a prospective observational study

BACKGROUND: Although Weber type B ankle fractures are often considered benign with a good prognosis, evidence from observational studies suggests that 17% to 24% of such patients may have less satisfactory outcomes. Although the explanation for variability in outcomes remains unclear, previous studies of other surgical procedures have suggested nonsurgery-related causes account for much of the variability in outcomes. METHODS: We conducted a prospective observational cohort study to evaluate health-related quality of life in 30 patients with unstable ankle fractures who were otherwise healthy. Only patients from 2 university-affiliated hospitals sustaining unstable type B Weber injury patterns requiring surgery were eligible. Patients provided detailed baseline information regarding alcohol consumption, smoking habits, and educational level. Patients completed the short form 36 questionnaire and a visual analogue pain scale at regular follow-up intervals. RESULTS: The average patient age was 51.6 years (SD 15.2 years), and 57% (17 out of 30) were male. The majority of fractures were the result of a fall (67%, 20 out of 30), and all were closed injuries. Almost half of all patients were smokers (47%, 14 out of 30), whereas 43% consumed alcohol on a weekly basis (13 out of 30). Forty-three percent of patients (13 out of 30) had obtained an elementary or high school level of education. Patients experienced significant improvements in all domains of the SF-36 questionnaire (P < 0.001), except general health, which remained essentially normal over the 24-month period. Study patients achieved scores similar to age-matched U.S. normative data across 6 of the 8 domains (Role Emotional, Social Function, Mental Health, Bodily Pain, Vitality, and General Health). However, patients' physical function and role physical scores remained significantly lower than US norms at 24 months (21.8 and 20.7 points lower on a 100-point scale, respectively; P < 0.001). Smoking history (P = 0.02), presence of a medial malleolar fracture (P = 0.02), and lower levels of education (P = 0.01) were significant independent predictors of lower physical function up to 3 months postoperation. Lower mental health domain scores were significantly associated with alcohol use (P = 0.02) and increasing age (P = 0.04). CONCLUSIONS: As is the case in many other areas, social factors may be important determinants of outcome in patients with traumatic fractures. Optimal orthopedic care may involve attention to modifiable risk factors, including smoking and alcohol consumption.     

Measuring quality of life in multiple sclerosis patients with urinary disorders using the Qualiveen questionnaire

OBJECTIVES: To assess the impact of urinary disorders on multiple sclerosis (MS) patients' health-related quality of life and to examine the cross-sectional construct validity of Qualiveen, a questionnaire originally developed for spinal cord injury patients with urinary disorders, in patients with MS. DESIGN: Cohort study. SETTING: Neurourodynamic units in 3 French university hospitals. PARTICIPANTS: Patients with MS (N=197). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: We tested predictions about the relationships among clinical features, the French version of the Multiple Sclerosis Quality of Life questionnaire (SEP-59), the Expanded Disability Status Scale (EDSS), and the 4 domains of the 30-item Qualiveen. RESULTS: Cross-sectional correlations among the 4 Qualiveen domains and type (range, .36-.54), number of symptoms (range, .23-.50), and severity of incontinence (.39-.68) were generally moderate to strong. The SEP-59 bowel and bladder function domain showed moderate to strong relationships with the Qualiveen (range, .39-.59). Relationships with other SEP-59 domains were generally weak (range, .22-.35), and with the EDSS they were very weak. Predictions proved generally accurate (weighted kappa=.61). CONCLUSIONS: Our data supported the Qualiveen's validity as a discriminative instrument for use with patients with MS. Further studies should explore the Qualiveen's longitudinal validity and responsiveness.     

The MacNew Heart Disease health-related quality of life instrument: A summary

Background

The measurement of health, the effects of disease, and the impact of health care include not only an indication of changes in disease frequency and severity but also an estimate of patients' perception of health status before and after treatment. One of the more important developments in health care in the past decade may be the recognition that the patient's perspective is as legitimate and valid as the clinician's in monitoring health care outcomes. This has lead to the development of instruments to quantify the patients' perception of their health status before and after treatment.

Methods

We review evidence supporting the measurement properties of the MacNew Heart Disease Health-related Quality of Life [MacNew] Questionnaire which was designed to evaluate how daily activities and physical, emotional, and social functioning are affected by coronary heart disease and its treatment.

Results

Reliability was demonstrated by using internal consistency and the intraclass correlation coefficients for the three domains in the Dutch, English, Farsi, German, and Spanish versions of the MacNew. With internal consistency and intraclass correlation coefficients =>0.73, reliability is high. Validity of the MacNew was examined with factor analysis and three core underlying factors, physical, emotional, and social, were identified, explaining 63.0 – 66.5% of the observed variance and replicated in the translations with psychometric data. Construct validity of the MacNew was further demonstrated by extensive substantiation of the logical relationships, defined a priori, between items and other comparison tools. The MacNew is responsive and sensitive to changes in HRQL following various interventions for patients with heart disease with 11 of 13 effect size statistics >0.80. Taking an average of 10 minutes or less to complete, the respondent-burden for the MacNew is low and its acceptability is demonstrated by response rates of over 90%. Normative data are available for patients with myocardial infarction, angina, and heart failure in the English version.

Conclusion

The MacNew may be a valuable tool for assessing and evaluating health related quality of life in patients with heart disease.

     

A cost analysis of the employer-based bednet programme in Coastal and Western Kenya

Malaria remains a major health problem in Africa. One preventative strategy currently advocated is the use of bednets, preferably treated with insecticide. Many approaches to bednet delivery have been adopted in Kenya, including an employer-based malaria control strategy (EBMC). The cost and sustainability of this approach have not previously been assessed. This paper presents the financial cost (cash expenditure) of the EBMC programme implemented in the Coastal and Western regions of Kenya by the African Medical and Research Foundation (AMREF) between April 1998 and February 2002. Getting a bednet and insecticide to an employee was estimated to cost the provider US$15.8. This could be reduced by US$0.5 if the remaining stocks were liquidated and by an additional US$1.3 if the salvage of capital items is considered. The venture of distributing bednets to employees through the programme proved lucrative to organized community groups (OCGs), for they made between 24 and 29% gross profit from the nets they sold. Consequently, OCGs in nine of the 13 companies involved had retained enough funds from which they could buy and sell bednets without further donor financial support, and this portrays some elements of a sustainable supply system.     

Withdrawal of mechanical ventilation in anticipation of death in the intensive care unit

In critically ill patients who are receiving mechanical ventilation, the factors associated with physicians' decisions to withdraw ventilation in anticipation of death are unclear. The objective of this study was to examine the clinical determinants that were associated with the withdrawal of mechanical ventilation.     

Predictors of reoperation following operative management of fractures of the tibial shaft

BACKGROUND: Accurate prediction of likelihood of reoperation in patients with tibial shaft fractures would facilitate optimal management. Previous studies were limited by small sample sizes and noncomprehensive examination of possible risk factors. OBJECTIVE: We conducted an observational study to determine which prognostic factors were associated with an increased risk of reoperation following operative treatment in a heterogeneous population of patients with tibial shaft fractures. DESIGN: Retrospective observational study. SETTING: Level 1 trauma center. METHODS: We identified 200 patients with tibial shaft fractures from two university-affiliated centers. Two reviewers independently abstracted data regarding 20 possible prognostic variables, reviewed preoperative and postoperative radiographs, and documented reoperations (defined as any surgical procedure 相似文献   

A comparison of the original chronic respiratory questionnaire with a standardized version

BACKGROUND AND OBJECTIVES: The chronic respiratory questionnaire (CRQ), a widely used measure of health-related quality of life (HRQL) in patients with chronic airflow limitation, includes an individualized dyspnea domain (patients identify five important activities, and report the degree of dyspnea on a 7-point scale). Because the individualized domain is unwieldy in multicenter clinical trials, we developed a standardized version and tested its discriminative and evaluative properties. METHODS: We enrolled 51 patients who completed the standardized and individualized CRQ before starting a respiratory rehabilitation program, and again 3 months later. We calculated both cross-sectional and longitudinal correlations between the two versions and a number of other HRQL instruments, and tested the relative ability of the individualized and standardized versions of the CRQ to detect improvement with rehabilitation. RESULTS: The results of the individualized questions suggested greater dysfunction (lower scores) than did the standardized questions both at baseline (3.18 vs 3.92, p < 0.001) and follow-up (4.62 vs 4.84, p = 0.051). The standardized dyspnea domain showed superior discriminative validity. While both techniques detected important, statistically significant improvement with rehabilitation (individualized domain mean change, 1.44; 95% confidence interval [CI], 1.11 to 1.77 [p < 0.001]; standardized domain mean change, 0.92; 95% CI, 0.61 to 1.24 [p < 0.01]), the difference in effect was substantial and statistically significant (mean difference, 0.52; 95% CI, 0.22 to 0.82; p = 0.001). The two versions showed comparable longitudinal validity. CONCLUSIONS: A standardized version of the CRQ dyspnea domain improves the cross-sectional validity, maintains longitudinal validity, but reduces the responsiveness. By increasing sample size, investigators can use the more efficient standardized version of the CRQ without compromising validity.