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Biomedical subjects

J A Talcott

Publications and source records attributed to J A Talcott.

At least 19 recordsLinked to original sources
PubMed2001

Symptom indexes to assess outcomes of treatment for early prostate cancer.

BACKGROUND: Patients' perceptions of treatment outcomes are important in the management of early prostate cancer, but few studies have offered reliable and responsive measures to assess the likely side effects of the most common treatments. OBJECTIVE: To develop indexes of urinary, bowel, and sexual function, and related distress. RESEARCH DESIGN: Prospective cohort study of the outcomes of treatment for early prostate cancer, with self-administered questionnaires completed before treatment, and 3 and 12 months afterward. Hypothesized indexes, based on a clinical model of pathophysiological side effects of treatment, were defined and evaluated with respect to reliability and validity. SUBJECTS: Patients (n = 184) undergoing radical prostatectomy or external beam radiotherapy for early prostate cancer. MEASURES: Urinary and bowel items pertained to frequency or intensity of symptoms of dysfunction; parallel items assessed symptom-related distress. Sexual dysfunction items assessed the quality of erections, orgasm, and ejaculation; distress was assessed by 2 items adapted from the MOS Sexual Problems (MOS-SP) scale. HRQoL was assessed by the SF-36 and Profile of Mood States. RESULTS: Symptom and symptom-related distress indexes for urinary incontinence, urinary obstruction/irritation, bowel dysfunction, and sexual dysfunction were defined. Symptom and distress indexes in each domain were highly correlated. Responsiveness was substantial and varied by treatment in ways consistent with clinical experience. The indexes accounted for significant proportions of the variance in HRQoL measures. CONCLUSIONS: These indexes may be used in monitoring outcomes of treatment for early prostate cancer.

Aged↗
PubMed2001

Sexuality after treatment for early prostate cancer: exploring the meanings of "erectile dysfunction".

OBJECTIVE: To explore perceptions of the impact of erectile dysfunction on men who had undergone definitive treatment for early nonmetastatic prostate cancer. DESIGN: Seven focus groups of men with early prostate cancer. The groups were semistructured to explore men's experiences and quality-of-life concerns associated with prostate cancer and its treatment. SETTING: A staff model health maintenance organization, and a Veterans Affairs medical center. PATIENTS: Forty-eight men who had been treated for early prostate cancer 12 to 24 months previously. RESULTS: Men confirmed the substantial effect of sexual dysfunction on the quality of their lives. Four domains of quality of life related to men's sexuality were identified: 1) the qualities of sexual intimacy; 2) everyday interactions with women; 3) sexual imagining and fantasy life; and 4) men's perceptions of their masculinity. Erectile problems were found to affect men in both their intimate and nonintimate lives, including how they saw themselves as sexual beings. CONCLUSIONS: Erectile dysfunction, the most common side effect of treatment for early prostate cancer, has far-reaching effects upon men's lives. Assessment of quality of life related to sexual dysfunction should address these broad impacts of erectile function on men's lives. Physicians should consider these effects when advising men regarding treatment options. Physicians caring for patients who have undergone treatment should address these psychosocial issues when counseling men with erectile dysfunction.

Aged↗
PubMed2001

Long-term treatment related complications of brachytherapy for early prostate cancer: a survey of patients previously treated.

PURPOSE: We determined long-term symptoms in patients after brachytherapy (radioactive seed implantation) for early (nonmetastatic) prostate cancer. MATERIALS AND METHODS: We performed a cross-sectional survey of 105 (80% of those contacted) men treated at least 2 years 9 months (median 5.2 years) previously with brachytherapy alone (72 patients) or brachytherapy plus external beam radiation therapy (33) at a pioneering referral center for ultrasound guided brachytherapy. RESULTS: Median patient age was 70 years at treatment and 75 years when surveyed. Bowel symptoms were uncommon (range 4% to 9%) unless patient had also received external beam radiation therapy. Urinary incontinence occurred in 45% of men, although leakage of more than a few drops, daily leakage and wearing absorptive pads occurred in 11%, 11% and 16%, respectively. Men who underwent documented transurethral prostatic resection were much more likely to report incontinence (83% versus 39%, p = 0.005) and those who underwent implantation less than 5 years earlier were less likely (33% versus 53%, respectively, p = 0.04). Complete impotence was common (50%) but impaired erections were more so (73%). Patients who received combined radiation treatment had more frequent erectile dysfunction. CONCLUSIONS: Long-term bowel symptoms are infrequent after brachytherapy alone. Urinary incontinence is common, although usually only a few drops and not daily. Erectile dysfunction, prevalent in populations of older men, was found in most men. However, because our study design precluded documenting baseline symptoms before treatment and subsequent clinical interventions, the contribution of factors other than brachytherapy is unclear. The morbidity of patients receiving more recent brachytherapy may be less.

Aged↗
PubMed2000

Out-patient management of febrile neutropenia.

Fever and neutropenia commonly complicated cytotoxic cancer therapy. Although standard therapy is empirical in-patient broad-spectrum intravenous antibiotic therapy until fever and neutropenia resolve, different treatments based on patient risk have been reported over the last decade. The data identifying low risk patients, treatment strategies for low risk patients, and additional information required before recommending out-patient management of fever and neutropenia widely are described.

Ambulatory Care↗
PubMed2000

Binary data with two, non-nested sources of clustering: an analysis of physician recommendations for early prostate cancer treatment.

A prospective cohort study of men with newly diagnosed early prostate cancer was undertaken Talcott et al. (1998) in order to evaluate both the patient-level and the physician-level determinants of physician recommendations for radical prostatectomy (surgery) versus radiation therapy. Each patient sought recommendations from as many as six physicians, and each physician provided recommendations for as many as 113 patients. Thus, the recommendations are clustered within physician and within patient. While methods have been developed for binary data with multiple-nested sources of clustering, they have not been fully explored for binary data with non-nested sources of clustering, such as the treatment recommendations. Here we propose reclustering the data to form binary data with one source of clustering. Because the reclustered data result in one very large cluster and several clusters of size one and two, marginal logistic regression models for the probability of a recommendation of surgery fit using a generalized estimating equation approach would produce unreliable estimates of uncertainty for the parameters. Thus, in addition to the mean model, we attempt to model the associations in as much detail as possible. We compare this model to a mixed-effects model that implicitly adjusts for both sources of clustering and to models based on the assumption of conditional independence with regard to one source of clustering.

Journal Article↗
PubMed2000

Sexuality and cancer: conversation comfort zone.

Shortly before his death in 1995, Kenneth B. Schwartz, a cancer patient at Massachusetts General Hospital (MGH), founded The Kenneth B. Schwartz Center at MGH. The Schwartz Center is a nonprofit organization dedicated to supporting and advancing compassionate health care delivery, which provides hope to the patient, support to caregivers, and encourages the healing process. The center sponsors the Schwartz Center Rounds, a monthly multidisciplinary forum where caregivers reflect on important psychosocial issues faced by patients, their families, and their caregivers, and gain insight and support from fellow staff members. Psychosocial issues profoundly affect patients with cancer. Of the many complexities that make up the psychosocial dynamic, perhaps the medical profession is most uncomfortable with sexuality. Many elements of sexual behavior remain high-profile taboos. A number of diseases and treatments significantly affect sexual function. Male and female sexuality were discussed in two separate rounds with an emphasis on how to begin a dialogue about sexuality without jeopardizing other aspects of the relationship with patients. Three cases were presented. A patient with prostate cancer considering treatment options for early-stage disease and two patients with gynecologic malignancies; one with a colostomy following cytoreductive surgery for ovarian cancer and the other with a failed vaginal reconstruction for recurrent squamous cell carcinoma of the vagina. Staff discussed the wide diversity of response to sexual dysfunction and the difficulties that patients face. A sensitive and informed approach to discussing sexuality can provide effective support. The elements of successful dialogue are presented in the PLISSIT model.

Adult↗
PubMed2000

Ambulatory antimicrobial therapy for hematologic malignancies.

Risk prediction in patients with neutropenia and fever in a reliable and timely manner has only become possible in the last decade. Patients have been categorized as high risk or low risk based on certain presenting characteristics. Low-risk patients may be defined as hemodynamically stable, with responsive or controlled malignancies, brief (< or = 7-day) periods of neutropenia, and no significant comorbidities or serious documented infections. Such patients may be suitable for alternative treatment strategies, such as outpatient parenteral, sequential, or oral therapy. These approaches still need to be definitively evaluated, with safety being the primary concern. Substantial advantages may be gained from such strategies, including reduced exposure to resistant nosocomial pathogens, greater cost effectiveness, and enhanced quality of life.

Anti-Bacterial Agents↗
PubMed1999

Assessing suspected spinal cord compression: a multidisciplinary outcomes analysis of 342 episodes.

The object of this work was to evaluate the assessment and document the outcomes of cancer patients with suspected spinal cord compression (SCC). In a retrospective cohort study of 342 episodes of suspected SCC in cancer patients evaluated by computed tomography (CT) of the spine, a multidisciplinary team of neurologists, radiologists, and oncologists assessed the impact of varying the anatomical criterion for SCC and including new SCC diagnosed shortly after definitive radiographical imaging. We developed a logistic regression model to identify independent clinical predictors of SCC, including the natural history of the underlying cancer as well as neurological and radiological risk factors. Management of suspected SCC infrequently involved neurology consultation (21% of episodes). The frequency of SCC increased more than four-fold when the definition was expanded to include epidural cancer rather than spinal cord displacement only (36% vs. 8%), and 90-day clinical follow-up identified few new lesions not evident on definitive imaging studies. Clinical information about the course of cancer (documentation and duration of metastatic cancer) added independent predictive information to that yielded by neurological assessment and prior imaging studies in a multiple regression model. The a priori predicted risk of SCC, which ranged from 4% to 87% in this study, may vary enough to affect treatment strategies, although our population may have excluded very-low-risk patients. Consistent anatomical definitions of SCC, clinical follow-up of definitive imaging studies and the addition of information on the natural history of cancer to traditional neurological and radiographical evaluation may all improve clinical assessment of suspected SCC in cancer patients.

Adolescent↗
PubMed1999

Changes in quality of life following treatment for early prostate cancer.

OBJECTIVES: To explore the effects of urinary, bowel, and sexual symptoms following treatment for early (nonmetastatic) prostate cancer on health-related quality of life through an examination of the responsiveness of the Medical Outcomes Study Short Form Health Survey (SF-36). METHODS: We conducted a prospective observational cohort study of 125 men with early prostate cancer who underwent either radical prostatectomy or radical, external beam radiotherapy. Patients completed questionnaires, which included assessments of urinary, bowel, and sexual symptoms and the SF-36 at the time of their clinical consultation prior to deciding on primary therapy and at 3 and 12-month follow-up. RESULTS: Although cross-sectional analysis showed substantial associations between symptoms and the eight scales of the SF-36 12 months after the initiation of treatment, longitudinal analyses of changes in these scales showed only modest effects. Three scales registered changes associated with the development of new symptoms: General Health Perceptions, Vitality, and Social Function. Role Performance with Emotional Limitations demonstrated a surprising response: slight improvements in men with new symptoms, compared with substantial gains in men who survived treatment without developing new urinary, bowel, or sexual symptoms. Overall, the SF-36 demonstrated a pattern of decline at 3 months and recovery to baseline at 12 months. Rather than registering declines in response to increasing symptoms, negative changes occurred primarily in men who presented symptoms prior to treatment and whose symptoms were unchanged 12 months later. CONCLUSIONS: The SF-36 is associated with the presence of physical symptoms but demonstrates a complicated pattern of change following treatment and the development of new urinary, bowel, and sexual problems. Multidimensional approaches to the outcomes of treatment for early prostate cancer help to clarify the magnitude of both gains and losses in quality of life.

Adult↗
PubMed1998

Suspected spinal cord compression in breast cancer patients: a multidisciplinary risk assessment.

Breast cancer is the most common cause of metastatic epidural spinal cord compression (SCC) in women, and this condition results in significant neurologic dysfunction and morbidity. Prior studies of patients with suspected SCC did not employ multivariate analysis techniques, often included persons with a wide variety of malignancies, and generally focused on identifying associated neurologic and radiologic features. We therefore conducted a study examining a more comprehensive set of potential clinical risk factors in breast cancer patients with suspected SCC. We retrospectively analysed 123 episodes of suspected SCC among 93 breast cancer patients evaluated by spine computed tomography (CT) scanning. Multiple logistic regression analysis was employed to identify independent predictors of SCC. Clinically significant metastatic epidural cancer was defined as thecal sac compression (TSC), which occurred in 33 episodes (27%). Four independent predictors of TSC were identified and included oncologic features (known bone metastases > or = 2 years, metastatic disease at initial diagnosis) in addition to neurologic and radiologic features (objective weakness, vertebral compression fracture on spine radiograph). These four predictors stratified episodes into subgroups with widely varying risks of TSC, ranging from 12% (0 risk factors) to 85% (> or = 3 risk factors). These results suggest that the evaluation of breast cancer patients with suspected SCC should include clinical information about their disease course in addition to neurologic examination and prior imaging studies. If confirmed, these predictors may help clinicians assess risk in this patient population.

Adult↗
PubMed1998

The epidemic of prostate cancer and the medical literature: a causal association?

The diagnosis of prostate cancer has undergone an unprecedented recent increase, while mortality has increased much more slowly. We examined new prostate cancer diagnoses from 1987-1992 in a nationwide prospective cohort study of 51 529 men enrolled in the Health Professionals Follow-up Study, a population likely to be medically sophisticated and thus early to adopt medical innovations. The age-adjusted incidence of prostate cancer rose approximately 2(1/2) fold during the study period. Nearly all of the increase occurred among organ-confined tumors, with a smaller increase for regionally-advanced tumors and none for metastatic tumors. Using a Poisson regression model of newly-diagnosed cancers, we found organ-confined cancers rose abruptly by 86% (95% CI: 36-256%; P=0.0001) and regionally-advanced tumors by 73% (95% CI:12-267%; P=0.01) after March, 1991, when a study advocating screening using the prostate specific antigen (PSA) was published in the New England Journal of Medicine. The recent increase in the incidence of prostate cancer is probably due to the increased PSA screening of asymptomatic men, resulting in the diagnosis of large numbers of men with early-stage disease from 1990 onward. Despite ongoing debate over the value of PSA screening, the rate of diagnosis accelerated sharply after the publication of a well-publicized but inconclusive study advocating screening. In a context of growing disease awareness, well-publicized research reports may result in unexpectedly amplified acceptance into medical practice.

Journal Article↗
PubMed1998

Patient-reported symptoms after primary therapy for early prostate cancer: results of a prospective cohort study.

PURPOSE: To assess complications of therapy for early (nonmetastatic) prostate cancer. PATIENTS AND METHODS: A prospective study of a cohort of 279 men who sought treatment advice and completed required pretreatment forms. The measures were self-reported patient symptoms and other measures of quality of life before therapy and at 3 and 12 months afterward. RESULTS: Bowel and bladder symptoms were uncommon pretreatment. Patients frequently reported irritative bowel and bladder symptoms at 3 months after radiotherapy, although these subsided somewhat at 12 months. Substantial ("a lot") urinary incontinence and wearing of absorptive pads were reported by 11% and 35% at 12 months after surgery and varied little by age. Incontinence occurred after radiotherapy infrequently, and only in men more than 65 years old. Inadequate erections, present in one third of men pretreatment, were nearly universal at 3 months after surgery, although some improvement, primarily in men under 65 years of age, was evident at 12 months. Sexual dysfunction after radiotherapy increased less but continually through 12 months, suggesting that observed treatment-related differences would decline with further follow-up. CONCLUSION: External-beam radiotherapy of early prostate cancer is followed by bowel and bladder irritability, by increasingly severe sexual dysfunction and, in men aged more than 65 years, occasional urinary incontinence. Greater sexual dysfunction and urinary incontinence occur in the year following radical prostatectomy. These postsurgical complication rates from patient questionnaires are greater than have been reported in other treatment series and confirm the results of two retrospective studies of patient-reported complications.

Adult↗
PubMed1997

Patient-reported impotence and incontinence after nerve-sparing radical prostatectomy.

BACKGROUND: The age-adjusted rate of radical prostatectomy, the most common treatment of early (nonmetastatic) prostate cancer, increased almost sixfold between 1984 and 1990. This increase was due in part to reported improvements in postoperative sexual potency after the use of newly developed "nerve-sparing" procedures. However, published estimates from physicians of impotence following various types of radical prostatectomy may be low, since not all patients may report treatment-related complications accurately and completely to their doctors. In contrast, direct surveys of patients indicate much higher rates of postoperative sexual and urinary dysfunction. One problem with most physician and patient surveys is that they have been performed retrospectively, and pretreatment impotence and incontinence prevalent in older men cannot be assessed accurately in retrospective studies. PURPOSE: This study was initiated in a cohort of men before they underwent radical prostatectomy to assess treatment-related effects on impotence and incontinence. METHODS: The study population consisted of 94 men enrolled in a cohort study of treatment for early prostate cancer. The patients completed questionnaires about sexual and urinary functions before surgery and at 3 and 12 months after surgery and had adequate information to assess the type of surgical technique used (non-nerve-sparing, unilateral nerve-sparing, or bilateral nerve-sparing). Because items assessing sexual function were inadvertently omitted from the questionnaire in the initial months of the study, information on sexual function for all time periods was available for only 49 men. RESULTS: Compared with men who had not been treated with a nerve-sparing procedure, men who underwent nerve-sparing radical prostatectomy, particularly of the bilateral type, were younger and had better prognostic features, indicating less advanced cancers. Before surgery, nine (75%) of 12 men not treated with a nerve-sparing procedure reported erections that were usually inadequate for sexual intercourse compared with six (33%) of 18 men and one (5%) of 19 men who underwent unilateral and bilateral nerve-sparing prostatectomies, respectively. At 12 months after surgery, most men reported inadequate erections, including 15 (79%) of the 19 men who had bilateral nerve-sparing surgery; unilateral nerve preservation provided no apparent benefit. In general, nerve-sparing surgery was associated with more use of absorbent pads at 3 and 12 months following treatment, and this approach was associated with substantial urinary incontinence at 3 months but not at 12 months following surgery. CONCLUSIONS: Nerve-sparing prostatectomy, particularly when performed unilaterally, improves postoperative sexual function to a lesser extent than previously reported. Because men with preoperative impotence and more advanced cancers receive nerve-sparing surgery less often, some of the previously reported benefit of nerve preservation may be the result of patient selection and not of the technique per se.

Aged↗
PubMed1997

Complications after treatment with external-beam irradiation in early-stage prostate cancer patients: a prospective multiinstitutional outcomes study.

PURPOSE: To use data from a prospective quality-of-life study to assess differences in disease-specific and general health-related quality-of-life changes after treatment with different external-beam irradiation techniques for prostate cancer. PATIENTS AND METHODS: Patients were divided into three groups based on their pretreatment field size and planning technique: whole pelvis, small field, or conformal. Measures of bowel, urinary, and sexual function and of global health-related quality-of-life parameters (from the Health Survey Short Form [SF-36] and the Profile of Mood States [POMS]) were obtained from self-report questionnaires completed before initiation of therapy and at 3 and 12 months after therapy. RESULTS: Irritative gastrointestinal and genitourinary side effects were frequent 3 months after treatment, but were substantially improved at 12 months. Sexual dysfunction increased steadily over the study period. The POMS and the SF-36 did not demonstrate significant changes over time. Despite small patient numbers, we found trends in favor of conformal therapy across several symptom measures, including sexual function. In the fatigue, energy, and vigor subscales, patients who received whole-pelvis treatment fared significantly worse than those in the other two groups. CONCLUSION: Prospective, detailed data from a feasibility study allowed us to assess the effect of technique on quality of life following external-beam irradiation. Although limited by the small planned sample size, these results suggest that smaller radiation fields limit treatment-related complications, including, unexpectedly, sexual dysfunction. However, confirmation in a larger study is necessary.

Affect↗
PubMed1996

Quality of life in early prostate cancer. Do we know enough to treat?

Informed consent is especially important for patients with early (nonmetastatic) prostate cancer. Because it occurs in older men and usually grows slowly, most newly diagnosed patients are likely to live many years and most likely will die without symptoms of metastatic cancer. The complications of treatment, however, may begin within months and be permanent. Recent studies using modern survey techniques are beginning to provide accurate information on treatment complications. A careful, thorough discussion between doctor and patient is necessary to identify the best available therapy for each patient.

Clinical Trials as Topic↗