Biomedical subjects

Christopher E Cox

Publications and source records attributed to Christopher E Cox.

11 recordsLinked to original sources

PubMed2006

Surrogates' perceptions about feeding tube placement decisions.

OBJECTIVES: (1) To determine surrogates perceptions about who made the decision to place the feeding tube and who they would have preferred to have made the decision. (2) To determine surrogates' perceptions of the information they received to make this decision. METHODS: Structured interviews with 246 surrogate decision-makers. RESULTS: Fifty-five percent of surrogates felt that the decision was made primarily by the surrogate, but 75% would prefer that the decision be shared with the physician. Surrogates reported that they discussed the benefits (80%) and the risks (72%) of feeding tube placement and discussed what life would be like with the feeding tube (65%) and without the feeding tube (67%). They also reported being asked if they understood the information (85%) and their thoughts about placement (56%). Despite receiving this information, 28 to 41% reported wanting more information about these aspects. CONCLUSION: Surrogates would have preferred greater physician participation in decisions about feeding tube placement and many reported that their informational needs were not completely met. PRACTICE IMPLICATIONS: These results suggest that physicians may be justified in taking a more active role in feeding tube decisions with surrogates and that many surrogates desire more information than is required by standards of informed decision making.

Activities of Daily Living↗

PubMed2006

The effect of thalidomide on corticosteroid-dependent pulmonary sarcoidosis.

STUDY OBJECTIVE: To determine the benefit and corticosteroid-sparing potential of thalidomide in corticosteroid-dependent pulmonary sarcoidosis. METHODS: The study was a prospective open-label pilot study. Ten subjects were enrolled who had pulmonary sarcoidosis, required corticosteroid therapy for at least six months, and experienced a flare of pulmonary sarcoidosis within the previous 2 years when corticosteroids had been reduced or discontinued. Thalidomide was given at a dose of 200 mg/day for 24 weeks. Dose reductions were allowed in 50 mg/day increments for side effects. After 12 weeks, the baseline corticosteroid dose was halved for the remaining 12 weeks of the study. RESULTS: There were no clinically or statistically significant changes in spirometry (FVC% predicted: week 0: 72 +/- 4, week 12: 75 +/- 5, week 24: 73 +/- 4; p = NS), quality of life (as measured by the Short Form-36), or dyspnea (as measured by the Transitional Dyspnea Index) between weeks 0, 12, and 24. Three (30%) subjects demonstrated clinical evidence of a corticosteroid-sparing effect from thalidomide. Three (30%) subjects had to withdraw from the study; two at week 4 because of an acute pulmonary flare of sarcoidosis, and one because of possible side effects. Although nine of 10 (90%) of subjects required a reduction of the thalidomide dose because of side effects, no adverse effects were severe. The most common final dose of thalidomide was 100 mg/day. CONCLUSIONS: Thalidomide does not significantly improve pulmonary function or quality of life in patients with corticosteroid-dependent sarcoidosis. Few patients can tolerate doses of greater than 100 mg/day. Thalidomide may have been corticosteroid-sparing in a subgroup of these patients.

Adrenal Cortex Hormones↗

PubMed2006

Expectations and outcomes of gastric feeding tubes.

PURPOSE: To compare expected outcomes with actual outcomes from tube feeding in adult patients. SUBJECTS AND METHODS: This prospective cohort study was conducted in two North Carolina hospitals. Surrogates were interviewed shortly after feeding tube insertion and at 3- and 6-month follow-up; chart abstraction and death certificate review also were carried out. Participants were surrogate decision-makers for consecutive adult patients who received new feeding tubes. RESULTS: There were 288 patients with surrogate decision-makers enrolled. Mean age was 65 years; 30% had a primary diagnosis of stroke, 16% neurodegenerative disorder, 20% head and neck cancer, and 30% other diagnoses. At 3 months, 21% of patients had died, and 6-month mortality was 30%. At 3 months, 38% of survivors were residing in a nursing home, and 27% had the feeding tube removed. Patients were impaired in most activities of daily living (ADLs) with little change over time. Medical complications were common: 25% of patients had decubitus ulcers at 3 months, and 24% had at least one episode of pneumonia. Perceived global quality of life was poor at 4.6 (on a 0-10 scale) at baseline, and surrogates anticipated this would improve to 8.0 with tube feeding. Family surrogates' expectations for improvement from the feeding tube were very high at baseline and remained so at 3 and 6 months. CONCLUSIONS: Families' high expectations of benefit from tube feeding are in contrast to clinical outcomes. Providers and families need better information about the outcomes of this common procedure.

Activities of Daily Living↗

PubMed2005

Sarcoidosis.

Sarcoidosis is a disease found in most populations worldwide, although it has a proclivity for relatively young African-American women in the United States. Although the pathogenesis is unknown, there likely are social, environmental, and genetic factors that are involved. Sarcoidosis seems to be different between whites and African Americans, with the latter population experiencing more severe and chronic disease. Improving access to care and addressing other disparities in health care may help to bridge the gap in health outcomes observed between patients.

Adult↗

PubMed2004

Increase in tracheostomy for prolonged mechanical ventilation in North Carolina, 1993-2002.

OBJECTIVE: Patients who require tracheostomy for prolonged mechanical ventilation have poor outcomes and high costs of care. However, recent longitudinal trends relevant to these patients and their care have not been described. We aimed to describe trends in the annual incidence and timing of tracheostomy for prolonged mechanical ventilation, as well as prolonged mechanical ventilation patient resource utilization and overall in-hospital mortality. DESIGN AND SETTING: Retrospective review of the North Carolina Hospital Discharge Database, a comprehensive record of all state nonfederal, nonpsychiatric hospital discharges between 1993 and 2002. PATIENTS: Patients were 9,794 medical and surgical patients >/=18 yrs of age with International Classification of Diseases, Ninth Revision, Clinical Modification code 96.72 (mechanical ventilation for >96 hrs) and Diagnosis Related Group code 483 (tracheostomy except for face, neck, and mouth diagnoses). INTERVENTIONS: None. MEASUREMENTS: Incidence rates adjusted for annual population growth, mechanical ventilation days until tracheostomy placement, length of stay, and hospital charges and payments adjusted by the medical component of the Consumer Price Index. MAIN RESULTS: Between 1993 and 2002, the incidence of tracheostomy for prolonged mechanical ventilation increased across all age groups from 8.3 of 100,000 to 24.2 of 100,000 (p < .001), although most significantly among patients <55 yrs of age. During this period, a decrease was seen in mortality (from 39% to 25%), median mechanical ventilation days to tracheostomy placement (from 12 to 10 days), and median length of stay (from 47 to 33 days). By 2002, patients were almost three times less likely to be discharged to home independently although twice as likely to be sent to a skilled nursing facility. Although prolonged mechanical ventilation patients with tracheostomies represented only 7% of all who required mechanical ventilation, their total charges during the study period were 1.74 billion dollars-22% of all mechanical ventilation patient charges. CONCLUSION: The incidence of tracheostomy for prolonged mechanical ventilation increased by nearly 200% during the past decade in North Carolina, exceeding changes in the overall incidence of respiratory failure three-fold. Although in-hospital mortality, length of stay, and charges per patient fell over time, the overall resource utilization of prolonged mechanical ventilation patients increased dramatically.

Adult↗

PubMed2004

Trends in the use of feeding tubes in North Carolina hospitals.

OBJECTIVE: National data describing the placement of feeding tubes demonstrated a rapid increase in use in the early and mid-1990s. In the past several years, substantial concerns have arisen regarding the appropriateness of the procedure in many chronically ill patients. The purpose of this study is to determine whether the use of feeding tubes has continued to increase through the 1990s despite these widely publicized concerns. DESIGN: Repeated measure cross-sectional study of the North Carolina Discharge Database. SETTING: Analyses of all nonfederal hospital inpatient admissions in North Carolina. MEASUREMENTS AND MAIN RESULTS: We examined the absolute numbers and rates of feeding tube placements from 1989 to 2000. The rate of feeding tube placement increased from 59/100,000 persons in 1989 to 94/100,000 persons in 2000, an overall 60% increase with slowing in the rate of increase in the late 1990s. However, when outpatient procedures were included, the increase in tube feeding continued throughout the 11-year period of observation. The increase was due to an increase in utilization within all hospitals over the time period. Utilization did not differ between profit and not for profit hospitals. The relative growth rate of inpatient feeding tube placement did not differ by age group but the absolute increase was greatest in those age 75 years and over. CONCLUSIONS: Our study demonstrates that the use of feeding tubes has continued to increase through the 1990s. This increase occurred despite ongoing controversy in the medical literature about feeding tube placement in chronically ill patients.

Adolescent↗

PubMed2004

Health-related quality of life of persons with sarcoidosis.

STUDY OBJECTIVES: To describe the health-related quality of life (HRQL) and mental health of persons with sarcoidosis, as well as to assess physician-patient agreement about the presence of sarcoidosis symptoms. DESIGN AND SETTING: Cross-sectional study at three university medical center outpatient pulmonary clinics. PATIENTS: One hundred eleven outpatients with sarcoidosis seen between March and July 2002. MEASUREMENTS: The HRQL of sarcoidosis patients was measured using generic and respiratory disease-specific forms (ie, Medical Outcomes Study 36-item short form survey [SF-36] and the St. George respiratory questionnaire [SGRQ], respectively). Depression was assessed using the Center for Epidemiologic Studies depression scale, and stress was assessed with the perceived stress scale four-item questionnaire. The kappa-statistic was calculated to compare physician-patient agreement in assessing sarcoidosis-related symptoms. RESULTS: Patients had moderate-to-severe reductions across all measured domains in perceived HRQL. Those patients who were prescribed oral corticosteroids had lower scores on both the SF-36 and the SGRQ than did those patients who were not. These differences were statistically significant and clinically important. The prevalence of depression was 66%, and that of significant stress was 55%. Spirometry values (FEV(1), 82% predicted; FVC, 86% predicted) were associated neither with HRQL nor with patients' perceived sarcoidosis symptoms, although they were correlated (r = 0.43; p < 0.0001) with physicians' perceptions that patients were symptomatic. Physicians and patients had only fair agreement (kappa-statistic range, 0.24 to 0.36 [by center]) in assessing perceived sarcoidosis symptoms. CONCLUSIONS: Outpatients with sarcoidosis had global reductions in measured HRQL and mental health indexes, although patients receiving therapy with oral corticosteroids had significantly worse HRQL. Experienced physicians based their assessments of patients' sarcoidosis symptoms on measures that were not related to issues of importance to patients. HRQL measurement may provide a unique insight into the impact that sarcoidosis may have on a patient's life that is not captured in traditional physiologic measures.

Adult↗

PubMed2003

Cost-effectiveness of ultrasound in preventing femoral venous catheter-associated pulmonary embolism.

Femoral central venous catheter use is complicated by a high risk of deep venous thrombosis despite antithrombotic prophylaxis. Although some have recommended screening for femoral catheter-associated thrombosis to prevent pulmonary embolism (PE), this strategy's economic implications are unclear. Therefore, we used a decision model to evaluate the potential cost-effectiveness of a Doppler ultrasound-based screening strategy versus no ultrasound in averting thromboembolic complications associated with femoral catheters. The base-case analysis included a hypothetical cohort of 60-year-old medical patients treated for acute respiratory failure. The perspective was that of the health care payor, and the primary outcomes were quality-adjusted life expectancy, PE, and PE-associated deaths. The ultrasound strategy cost $8,688/quality-adjusted life-year (QALY) gained, $5,305/PE averted, and $99,286/PE death averted. The best- and worst-case scenarios, calculated in multiway sensitivity analyses by varying in-hospital mortality, deep venous thrombosis prevalence, and ultrasound accuracy, ranged from $1,170/QALY to $35,342/QALY, respectively. Probablistic analyses, in which variables with uncertain values were varied randomly within their ranges, demonstrated median costs of $12,793/QALY (interquartile range $8,176/QALY, $20,648/QALY). In summary, ultrasound screening may improve outcomes among the critically ill with femoral venous catheters at acceptable costs and could complement venous thrombosis primary prevention programs.

Adult↗

PubMed2003

The Sarcoidosis Health Questionnaire: a new measure of health-related quality of life.

The Sarcoidosis Health Questionnaire (SHQ) is a health-related quality-of-life (HRQL) instrument we designed in a two-part study to allow patients to describe their satisfaction with life as it is affected by sarcoidosis. In the Development Study, we created the SHQ from a 151-item pool generated from interviews with 107 patients, a search of the relevant literature, and discussion with sarcoidosis experts. Using clinical impact methodology and the questionnaire responses of a separate group of 149 patients, we reduced the total number of items to 29. The final SHQ has three domains: Daily Functioning, Physical Functioning, and Emotional Functioning. In the Validation Study, performed with a different group of 111 patients, we found that the SHQ had good internal consistency reliability, as well as evidence of content, criterion, and construct validity based on its comparison with other measures of HRQL (Medical Outcomes Study 36-Item short form and the St. George's Respiratory Questionnaire) and of mental health (the Center for Epidemiologic Study-Depression Scale), as well as with clinical variables including spirometry. The SHQ alone was sensitive to differences in HRQL based on the number of involved organ systems. In conclusion, we have developed a self-completed HRQL questionnaire for U.S. patients with sarcoidosis.

Activities of Daily Living↗

PubMed2002

Effectiveness of medical resident education in mechanical ventilation.

Specific methods of mechanical ventilation management reduce mortality and lower health care costs. However, in the face of a predicted deficit of intensivists, it is unclear whether residency programs are training internists to provide effective care for patients who require mechanical ventilation. To evaluate these educational outcomes, we administered a validated 19-item case-based test and survey to resident physicians at 31 diverse U.S. internal medicine residency programs nationwide. Of 347 senior residents, 259 (75%) responded. The mean test score was 74% correct (SD, 14%; range, 37 to 100%). Important items representing evidence-based standards of critical care answered incorrectly were as follows: use of appropriate tidal volume in the acute respiratory distress syndrome (48% incorrect), identifying a patient ready for a weaning trial (38% incorrect), and recognizing indication for noninvasive ventilation (27% incorrect). Most accurately identified pneumothorax (86% correct) and increased intrathoracic positive end-expiratory pressure (93% correct). Better scores were associated with "closed" versus "open" intensive care unit organization (76 versus 71% correct, p = 0.001), resident perception of greater versus lesser ventilator knowledge (79 versus 71% correct, p = 0.001), and graduation from a U.S. versus international medical school (75 versus 69% correct, p = 0.033). Although overall training satisfaction correlated strongly with program use of learning objectives (r = 0.89, p < 0.0001), only 46% reported being satisfied with their mechanical ventilation training. We conclude that senior residents may not be gaining essential evidence-based knowledge needed to provide effective care for patients who require mechanical ventilation. Residency programs should emphasize evidence-based learning objectives to guide mechanical ventilation instruction.

Educational Measurement↗

PubMedDate not supplied

The changing epidemiology of mechanical ventilation: a population-based study.

The number of critical care beds in the United States has been increasing considerably, but it is unclear how these additional beds have been used. Mechanical ventilation for acute respiratory failure almost always demands ICU care and is likely to be a reliable indicator of critical care resource requirements on a population level. The objective of this study was to measure changes in the yearly incidence of mechanical ventilation in a statewide population. The North Carolina Hospital Discharge Database contains data on all discharges from nonfederal, nonpsychiatric hospitals in North Carolina. Authors extracted data on adult patients with International Classification of Diseases, 9th Revision, Clinical Modification procedure codes for mechanical ventilation from 1996 to 2002. The incidence of mechanical ventilation for adults grew from 284/100,000 population in 1996 to 314/100,000 in 2002, an increase of 11% (P < .05). While patients aged >64 had the highest age-specific incidence of mechanical ventilation each year, the greatest increase in incidence occurred in younger age groups (19% increase for age 18-64 vs 4% increase for age >64). The mean Charlson score increased from 1.76 +/- 1.73 to 1.89 +/- 1.86 (P < .001). Renal disease became more prevalent among patients requiring mechanical ventilation (17% of patients in 1996 vs 24% in 2002). Hospital charges adjusted for the medical consumer price index increased by 12%. The proportion of patients discharged to home declined from 45.4% to 34.4%, and discharges to nursing homes grew from 7.3% to 10.7%. The incidence of mechanical ventilation is increasing, and the increase is associated with a higher burden of comorbidities and fewer discharges to home.

Acute Disease↗