[Medical technology: its impact on the physician-patient relationship]. / La tecnología médica: su impacto en la relación paciente-médico.

The Nuestra Señora del Remedio Clinic is celebrating the 75th anniversary of the arrival of the San José de Gerona order at the clinic. Dr. Vallbona was invited to present a conference which we transcribe in this article, superficially reviewing the problems which may compromise the doctor-patient relationship as well as the rights and responsibilities each member of this relationship has.

La tecnología médica: su impacto en la relación paciente-médico / Medical technology: its impact on the doctor. Patient relationship

La Clínica de Nuestra Señora del Remedio celebra el 75 aniversario de la llegada de las religiosas de San José de Gerona a la Clínica. El Dr. Vallbona fue invitado para pronunciar la Conferencia que a continuación transcribimos, en la que repasa someramente los problemas que pueden comprometer la relación médico-paciente y los derechos y responsabilidades de cada uno de los integrantes de esta relación (AU)

Evolution of magnetic therapy from alternative to traditional medicine.

Static or electromagnetic fields have been used for centuries to control pain and other biologic problems, but scientific evidence of their effect had not been gathered until recently. This article explores the value of magnetic therapy in rehabilitation medicine in terms of static magnetic fields and time varying magnetic fields (electromagnetic). A historical review is given and the discussion covers the areas of scientific criteria, modalities of magnetic therapy, mechanisms of the biologic effects of magnetic fields, and perspectives on the future of magnetic therapy.

Medical manners: medical students' perceptions of their own.

BACKGROUND: Because good interpersonal skills are essential for successful careers in primary care, we investigated senior medical students' (SMS) perceptions of the impression they leave with patients. METHODS: To assess the key elements that define the impression we make on others, we developed measures for self monitoring/social desirability, sensitivity, and Machiavellianism. These scales were used to predict SMS' attitudes toward various patient problems and their residency choices. RESULTS: Lower sensitivity scores and higher Machiavellianism scores predicted negative attitudes toward patients with psychologic problems. Positive attitudes toward elderly patients were predicted by higher self-monitoring/social desirability scores and lower Machiavellianism scores. Overall, women scored higher than men on self-monitoring/social desirability and sensitivity and lower on Machiavellianism. CONCLUSIONS: Among SMS, impression management's dimensions are readily measured and the students with the best scores tend to choose primary care careers.

Blood pressure measurement and antihypertensive treatment in a low-income African-American population.

OBJECTIVES: The purpose of this study was to describe blood pressure measurement and hypertension treatment in an inner-city African-American community. METHODS: A random-digit dialing telephone survey of adults more than 18 years of age was carried out in 12 predominantly African-American zip code areas in Houston, Texas. RESULTS: More than 90% of subjects reported a blood pressure measurement within the past 2 years, and 87% of known hypertensives reported current medication use. CONCLUSIONS: Further improvements in hypertension control among African Americans in this country are likely to depend primarily on changes in diagnosis and management practices of health care providers and on maintaining primary care access for all socioeconomic groups.

Reliance on high technology among senior medical students.

To gain a better understanding of senior medical students who perceive high-technology medicine as the desirable form of medical practice, we developed and evaluated a structural equation model. Intolerance to clinical uncertainty, Machiavellianism, and authoritarianism characterized students who scored higher on reliance on high-technology medicine. High scorers also tended to have a negative orientation toward patients' psychological problems and were unlikely to choose careers in primary care medicine. Students who perceive high technology as a panacea in clinical medicine share personal traits and attitudes toward patients that are not conducive to achieving the national goal of a 50:50 ratio between primary and non-primary care physicians.

Response of pain to static magnetic fields in postpolio patients: a double-blind pilot study.

OBJECTIVE: To determine if the chronic pain frequently presented by postpolio patients can be relieved by application of magnetic fields applied directly over an identified pain trigger point. DESIGN: Double-blind randomized clinical trial. SETTING: The postpolio clinic of a large rehabilitation hospital. PATIENTS: Fifty patients with diagnosed postpolio syndrome who reported muscular or arthritic-like pain. INTERVENTION: Application of active or placebo 300 to 500 Gauss magnetic devices to the affected area for 45 minutes. MAIN OUTCOME MEASURE: Score on the McGill Pain Questionnaire. RESULTS: Patients who received the active device experienced an average pain score decrease of 4.4 +/- 3.1 (p < .0001) on a 10-point scale. Those with the placebo devices experienced a decrease of 1.1 +/- 1.6 points (p < .005). The proportion of patients in the active-device group who reported a pain score decrease greater than the average placebo effect was 76%, compared with 19% in the placebo-device group (p < .0001). CONCLUSIONS: The application of a device delivering static magnetic fields of 300 to 500 Gauss over a pain trigger point results in significant and prompt relief of pain in postpolio subjects.

Neuromuscular fatigue in prostate cancer patients undergoing radiation therapy.

OBJECTIVE: To determine the etiology of fatigue in prostate cancer patients undergoing radiation therapy (RT). METHODS: Thirteen prescreened men (60 to 76 years in age, 58 to 130 kg in body weight) were evaluated for neuromuscular fatigue (NMF) of the tibialis anterior (TA) muscle, cardiopulmonary fatigue (CPF), and psychological-subjective fatigue (PSF) at 1 to 2 weeks before RT (Pre), at the end of 8 weeks of RT (RT), and at 5 to 6 weeks after completion of RT (Post). OUTCOME MEASURES: For NMF, the TA muscle was fatigued by sustained isometric contraction at 80% of maximum voluntary contraction for 60 seconds on a force dynamometer. Neuromuscular efficiency (NME) expressed as a ratio of isometric force (in Newtons) and respective integrated electromyograms were measured. For CPF, stress testing was performed on a treadmill using the modified Bruce protocol. Piper Fatigue Scale, Beck Depression Inventory, and Epworth Sleepiness Scale were administered to evaluate PSF. DATA ANALYSIS: Paired t tests, single factor analysis of variance, and nonparametric analysis. RESULTS: At RT, there was a significant decline in NME of TA at the beginning (18.4%, p < .01) and the end (29.2%, p < .001) of sustained muscle contraction for 60 seconds. Post values were lower but nonsignificant in comparison with Pre values. NME recovered within 5 to 6 weeks after RT. No abnormalities were detected in CPF or PSF. No correlation was found between the decline in NME and psychological status of the patients. CONCLUSION: Results provide definitive evidence of transient decline in NME in prostate cancer patients at the completion of RT. The effect seems to be specific for neuromuscular performance alone and is independent of the cardiovascular or psychological status of the patients.

Hypertension awareness and control in an inner-city African-American sample.

African-Americans in the US are at high risk for hypertension-related morbidity and mortality. The majority of African-Americans live in central city areas, and lower socioeconomic status and health care utilization patterns have been hypothesized to contribute to higher blood pressure (BP) levels and poorer control of treated hypertension in this group. In order to plan an intervention to improve hypertension care for inner city African-Americans in Houston, Texas, we conducted a baseline survey of residents in 12 low-income ZIP code areas with a > 70% African-American population to determine the level of hypertension awareness, treatment and control, and associated sociodemographic, health care utilization, and medication compliance variables. Subjects were recruited to attend a BP measurement and assessment of knowledge, attitudes and behaviors through random digit phone dialing in the target ZIP code areas. Of the 962 subjects examined, 433 (45%) were hypertensive (systolic BP > or = 140 mm Hg or diastolic pressure > or = 90 mm Hg or taking antihypertensive medication). Among all hypertensives, 73% were aware, 64% were on treatment, and 28% were controlled to 140/90 mm Hg. Of hypertensives on treatment, 43% were controlled to 140/90 mm Hg, but 72% were controlled using the criterion of 160/95 mm Hg, and 75% were controlled using a diastolic pressure < 90 mm Hg only. These results are similar to those reported for African-Americans in the most recent US national health survey. Males were less likely to be aware, receiving treatment and controlled than were females. Although lack of awareness was associated with less frequent BP measurement, 77% of those unaware reported a measurement within the past 2 years. The majority of aware hypertensives reported frequent physician contact and high compliance with medication. We conclude that intervention to improve hypertension control in this population should focus on ensuring that health providers diagnose BP and establish treatment goals based on the current standard of 140/90 mm Hg.

Self-esteem and caregivers' attitudes toward elderly persons.

A scale identifying 141 medical students who responded positively to geriatric patients was based on Rosenberg's Self-esteem Scale modified by adding a phrase about geriatric care. Personal and professional role traits that predicted a positive therapeutic attitude were high scores on social desirability or self-monitoring and low scores on thanatophobia and depression. Senior medical students who expressed the highest self-esteem toward caring for elderly people indicated family medicine as their first choice of residency.

NIDDM incidence in a tri-ethnic population of diagnosed hypertensives.

OBJECTIVE: Significant racial/ethnic differences exist in the prevalence of hypertension (HTN) and non-insulin dependent diabetes mellitus (NIDDM). The purpose of this study was to determine if ethnicity (African-American, Hispanic and non-Hispanic white) was related to NIDDM incidence over a maximum follow-up period of 10 years. DESIGN: Retrospective cohort study. SETTING: A large, urban public health care system serving over 200,000 predominantly minority persons. The system includes nine primary care health centers. PATIENTS: African-American, Hispanic and non-Hispanic white patients with diagnosed hypertension who received primary care in the study setting. METHODS: Medical records of 2,941 hypertensives free of NIDDM at their baseline visit were reviewed to document incident NIDDM during follow-up. Sociodemographic characteristics and physiologic covariates consistently available in the medical record (blood pressure, height, weight, and blood glucose) were also abstracted. RESULTS: The mean age of patients at the baseline visit was 56 years; 67% were female, 63% were African-American. 17% Hispanic, and 20% non-Hispanic white. Two hundred thirty-six incident cases of NIDDM were identified in the cohort. In Cox proportional hazards analysis, the risk of developing NIDDM was not related to ethnicity either in univariate analysis or after adjusting for age, baseline blood glucose, and body mass index (adjusted RR for African Americans compared with whites = .82, 95% CI = .57-1.18; adjusted RR for Hispanics compared with whites = .84, 95% CI = .51-1.38). CONCLUSION: The lack of association between ethnicity and NIDDM risk among hypertensives is unexpected, and may indicate differences in the pathogenetic mechanisms that underlie the development of hypertension and NIDDM in these three ethnic groups.

Response rates to random digit dialing for recruiting participants to an onsite health study.

OBJECTIVE: To evaluate the response rates when random digit dialing was used as a substitute for geographic area sampling and household interviews to recruit 2100 African Americans for a blood pressure measurement and hypertension-related knowledge and attitudes survey. METHODS: Random digit dialing was used to identify African American adults living in 12 low-income ZIP code areas of Houston, Texas. A brief survey of hypertension awareness and treatment was administered to all respondents. Those who self-identified as African American were invited to a community location for blood pressure measurement and an extended personal interview. An incentive of $10 was offered for the completed clinic visit. A substudy of nonrespondents was carried out to test the effectiveness of a $25 incentive in increasing the response rate. Data from the initial random telephone interview were used to identify differences between those who did and did not attend the measurement session. RESULTS: Ninety-four percent of eligible persons contacted completed the telephone survey, and 65% agreed to visit a central community site for blood pressure measurement. In spite of the financial incentive and multiple attempts to reschedule missed appointments, only 26% of the 65% who agreed to attend completed the scheduled visit. In the substudy of the higher financial incentive, all of those who missed the original appointment agreed to another appointment, and 85% of this subgroup kept it. Not being employed full-time and a history of hypertension were consistently associated with agreement to be measured and keeping an appointment. In spite of the low response rate for scheduled appointments, differences--other than in employment status and a history of hypertension--between responders and nonresponders were small and consistent with what is usually observed in health surveys. CONCLUSIONS: The use of random digit dialing as a substitute for area sampling and household screening resulted in unacceptably low response rates in the study population and should not be undertaken without further research on ways to increase response rates.

Hypertension control in multi-ethnic primary care clinics.

The most recent JNC-V guidelines for hypertension treatment call for control of blood pressure (BP) to < 140/90 mm Hg, with increased emphasis on control of systolic pressure. To determine the extent and determinants of BP control in a large multi-ethnic, low-income clinic population of diagnosed hypertensives immediately prior to issuance of the new guidelines, we reviewed the medical records of 2925 patients sampled from a population of over 14,000 hypertensives following in a network of nine primary care clinics operated by the Harris County Hospital District in Houston, Texas. Variables extracted from the medical record included: systolic (SBP) and diastolic (DBP) blood pressure at the initial clinic visit, average of all BP readings in the 12 months prior to the chart review (the measure of current control), antihypertensives prescribed at the most recent visit, and patient sociodemographic variables. The mean age of the sample was 61.6 +/- 12.8 years, and 67% were female. Average 12-month SBP and DBP were 141 +/- 14.7 and 83.6 +/- 8.5 respectively. Forty-nine per cent of patients had SBP controlled to < 140 mm Hg, 79.5% had DBP controlled to < 90 mm Hg, and 46% of patients achieved the criterion of < 140/90 mm Hg. In logistic regression analysis, age, baseline BP, body mass index and ethnicity, but not gender, were associated with current control. After adjustment for other covariates, Hispanics and Black people were significantly more likely to be in poor control than whites (ORHISP = 2.05, 95%Cl = 1.57-2.70; ORBlack = 1.48, 95%Cl = 1.21-1.81). Twelve per cent of patients were not receiving any antihypertensive medication. Of the remaining, the majority (52%) were on monotherapy. In the monotherapy group, 45% had SBP > or = 140 mm Hg and 16% had DBP > or = 90 mm Hg. We conclude that the achievement of new treatment recommendations will require education of primary care providers in more aggressive titration of antihypertensive medications to control SBP.

Measuring social desirability among senior medical students.

The purpose of the study was to assess the role of medical students' social desirability scores on influencing their attitudes toward either a geriatric or hypochondriac patient. To carry out this investigation, we developed a social desirability scale that was domain-specific for medicine. Students' medical social desirability scores predicted negative attitudes and beliefs toward the geriatric but not the hypochondriac patient. This difference suggests that medical students find it acceptable to dislike the hypochondriac as a patient but not the elderly person. Social desirability scores were inversely related to Machiavellan scores, suggesting that medical students with a Machivellian response pattern tended to view their role as a physician in a less idealized way. Students who scored highest on social desirability tended to choose obstetrics-gynecology for their future career and those with the lowest scores either pathology or surgical subspecialties. Research with this scale should help access social desirability's role in medical students' in managing the impression they leave with patients.

Is obstetrics-gynecology a primary care specialty?

Suddenly everyone wants more primary care physicians. For several years, we collected data from senior medical students to relate their attitudes and beliefs about several clinical problems common to primary care to their choices of residencies. Because the Texas Medical Association's Special Committee on Primary Care included obstetrics-gynecology as a primary care specialty, we reviewed our data to see if the personal traits and professional role characteristics of seniors choosing obstetrics-gynecology differed materially from those of seniors choosing family medicine, internal medicine, or pediatrics. Results of this analysis put obstetrics-gynecology about as firmly in the primary care group as if the experimental design had planned it that way.