Biomedical subjects

O P Ryynänen

Publications and source records attributed to O P Ryynänen.

At least 19 recordsLinked to original sources

PubMed2001

General practitioners' willingness to request plain lumbar spine radiographic examinations.

OBJECTIVES: To examine general practitioners' attitudes to plain lumbar spine radiographic examinations. DESIGN: A postal questionnaire consisting of questions on background data and doctors' opinions about plain lumbar spine radiographic examinations, as well as eight vignettes (imaginary patient cases) presenting indications for lumbar radiography, and five vignettes focusing on the doctors' willingness to request lumbar radiography on the basis of patients' age and duration of symptoms. The data were analysed according to the doctor's age, sex, workplace and the medical school of graduation. SETTING: Finland. SUBJECTS: Six hundred and fifteen randomly selected physicians working in primary health care (64% of original target group). RESULTS: The vignettes revealed that the use of plain lumbar radiographic examination varied between 26 and 88%. Patient's age and radiation protection were the most prominent factors influencing doctors' decisions to request lumbar radiographies. Only slight differences were observed between the attitudes of male and female doctors, as well as between young and older doctors. Doctors' willingness to request lumbar radiographies increased with the patient's age in most vignettes. The duration of patients' symptoms had a dramatic effect on the doctor's decision: in all vignettes, doctors were more likely to request lumbar radiography when patient's symptoms had exceeded 4 weeks. CONCLUSIONS: General practitioners commonly use plain lumbar spine radiographic examinations, despite its limited value in the diagnosis of low back pain. Further consensus and medical education is needed to clarify the indications for plain lumbar radiographic examination.

Adult↗

PubMed2000

Lack of association between the functional variant of the catechol-o-methyltransferase (COMT) gene and early-onset alcoholism associated with severe antisocial behavior.

Addictive drugs, including ethanol, increase the brain's dopaminergic transmission, and catechol-o-methyltransferase (COMT) enzyme has a crucial role in dopamine inactivation. A common functional polymorphism in the COMT gene results in a three- to four-fold variation in enzyme activity. In a previous study, we found an association between type 1 (with late-onset but without prominent antisocial behavior) alcoholism and the low activity allele of the COMT gene. In this work we analyzed whether the COMT polymorphism has any effect on the development of type 2 (with early-onset and habitual impulsive violent behavior) alcoholism. The COMT genotype was determined in 62 impulsive violent recidivist offenders with early-onset (type 2) alcoholism, 123 late-onset nonviolent (type 1) alcoholics, and 267 race and gender-matched controls. The allele and genotype frequencies of these groups were compared with each other and also with previously published data from 3,140 Finnish blood donors. The type 2 alcoholics did not differ from either the blood donors or the controls. The low activity (L) allele frequency was higher among type 1 alcoholics (chi(2) = 4.98, P = 0.026) when compared with type 2 cases. The odds ratio for type 1 alcoholism as compared with type 2 alcoholism for those subjects with the LL genotype versus the HH genotype was 3.0 (95% confidence interval 1.1-8.4, P = 0.017). The results suggest that COMT genotype has no major role in the development of early-onset alcoholism with severe antisocial behavior.

Adult↗

PubMed2000

Prioritization attitudes among doctors and nurses examined by a scenario method.

OBJECTIVES: To investigate doctors' and nurses' attitudes toward 14 potential prioritization criteria. METHODS: This study was performed by using the random paired scenario method. The respondents received a questionnaire with 12 pairs of scenarios, imaginary patient cases, each of which contained two to three different prioritization criteria (e.g., child, old patient, poor patient). Respondents were asked which one of each scenario pair they would choose if only one patient could be treated. The scenarios were randomly put into 30 different questionnaire sets. There was a random selection of 241 doctors and 151 nurses in Finland, with response rates of 60.3% and 50.3%, respectively. RESULTS: Doctors prioritized young patients, severe disease, expensive treatments and posteriorized (negatively prioritized) demented or institutionalized patients, and patients having a self-caused disease. Children were strongly prioritized, even over serious diseases. Expensive treatments appeared to be favored by doctors, and this result cannot be explained by severity of disease. Nurses' attitudes were similar to those of doctors. CONCLUSIONS: Children were strongly prioritized. Elderly persons were posteriorized if they had dementia or were living in institutions. Patients having a self-caused disease are posteriorized, more often by nurses than by doctors.

Adult↗

PubMed1999

Attitudes to health care prioritisation methods and criteria among nurses, doctors, politicians and the general public.

The aim of this postal questionnaire study was to measure attitudes to health care prioritisation criteria among the Finnish general public (n = 1156), politicians (n = 1096), doctors (n = 803) and nurses (n = 667), altogether 3722 subjects. The questionnaire consisted of questions on background data, a list of seven alternative prioritisation methods and a list of 11 possible criteria for health care prioritisation. The most acceptable prioritisation methods were increased treatment fees and restricting expensive treatments and examinations. Only a few supported administrative prioritisation decisions. One third of the general public indicated that they did not accept any limitations in health care, whereas only 5% of doctors agreed with them. More doctors accepted prioritisation methods than respondents in other groups. Patient is a child, patient is an elderly person, severity of the disease and prognosis of the disease were the most accepted prioritisation criteria. Politicians and the general public also accepted self-induced nature of disease and patient's wealth as prioritisation crieteria. Logistic regression analysis of the general public respondents demonstrated that male gender, higher education and higher personal income were associated with acceptance of most prioritisation criteria. Similarly, older age of the respondent was associated with acceptance of self-induced nature of disease and patient's wealth as prioritisation criteria.

Adult↗

PubMed1999

Association between the functional variant of the catechol-O-methyltransferase (COMT) gene and type 1 alcoholism.

Catechol-O-methyltransferase (COMT) is an enzyme which has a crucial role in the metabolism of dopamine. It has been suggested that a common functional genetic polymorphism in the COMT gene, which results in 3 to 4-fold difference in COMT enzyme activity, may contribute to the etiology of mental disorders such as bipolar disorder and alcoholism. Since ethanol-induced euphoria is associated with the rapid release of dopamine in limbic areas, it is conceivable that subjects who inherit the allele encoding the low activity COMT variant would have a relatively low dopamine inactivation rate, and therefore would be more vulnerable to the development of ethanol dependence. The aim of this study was to test this hypothesis among type 1 (late-onset) alcoholics. The COMT polymorphism was determined in two independent male late onset (type 1) alcoholic populations in Turku (n = 67) and Kuopio (n = 56). The high (H) and low (L) activity COMT genotype and allele frequencies were compared with previously published data from 3140 Finnish blood donors (general population) and 267 race- and gender-matched controls. The frequency of low activity allele (L) was markedly higher among the patients both in Turku (P = 0.023) and in Kuopio (P = 0.005) when compared with the general population. When all patients were compared with the general population (blood donors), the difference was even more significant (P = 0.0004). When genotypes of all alcoholics (n = 123) were compared with genotypes of matched controls, the odds ratio (OR) for alcoholism for those subjects having the LL genotype vs those with HH genotype was 2.51, 95% CI 1.22-5.19, P = 0.006. Also, L allele frequency was significantly higher among alcoholics when compared with controls (P = 0.009). The estimate for population etiological (attributable) fraction for the LL genotype in alcoholism was 13.3% (95% CI 2.3-25.7%). The results indicate that the COMT polymorphism contributes significantly to the development of late-onset alcoholism.

Adult↗

PubMed1999

Association between low activity serotonin transporter promoter genotype and early onset alcoholism with habitual impulsive violent behavior.

A common 44-base pair insertion/deletion polymorphism in the promoter region of the human serotonin transporter (5-HTT) gene has been observed to be associated with affective illness and anxiety-related traits. This biallelic functional polymorphism, designated long (L) and short (S), affects 5-HTT gene expression since the S promoter is less active than the L promoter. Since there is strong evidence of a disturbance in brain serotonergic transmission among antisocial, impulsive, and violent type 2 alcoholic subjects, we decided to test the hypothesis that the frequency of the S allele, which is associated with reduced 5-HTT gene expression, is higher among habitually violent type 2 alcoholics when compared with race and gender-matched healthy controls and non-violent late-onset (type 1) alcoholics. The 5-HTT promoter genotype was determined by a PCR-based method in 114 late onset (type 1) non-violent alcoholics, 51 impulsive violent recidivistic offenders with early onset alcoholism (type 2), and 54 healthy controls. All index subjects and controls were white Caucasian males of Finnish origin. The S allele frequency was higher among type 2 alcoholics compared with type 1 alcoholics (chi2 = 4.86, P = 0.028) and healthy controls (chi2 = 8.24, P = 0.004). The odds ratio for SS genotype vs LL genotype was 3.90, 95% Cl 1.37-11.11, P = 0.011 when type 2 alcoholics were compared with healthy controls. The results suggest that the 5-HTT 'S' promoter polymorphism is associated with an increased risk for early onset alcoholism associated with antisocial personality disorder and impulsive, habitually violent behavior.

Adult↗

PubMed1998

Striatal presynaptic dopamine function in type 1 alcoholics measured with positron emission tomography.

Recent in vivo studies have shown low dopamine D2 receptor and dopamine transporter densities among late onset (type 1) alcoholics. We have now studied 6-[18F]-FDOPA (FDOPA) uptake in 10 type 1 alcoholics and eight matched controls to test the hypothesis that striatal presynaptic dopamine function is lower among alcoholics. Markedly low FDOPA uptake (Ki) was observed in the left caudate of two alcoholic patients, but the mean striatal uptake values of the patient group were higher than those of the control group. The greatest difference was observed in the mean FDOPA intake in the left putamen, which was 28% higher in the patient group (t = 3.00, P = 0.008, d.f. = 16, independent samples t-test), and in the right caudate (difference 36%, t = 2.87, P = 0.01). The elevated FDOPA uptake in putamen and caudate correlated with poor Wisconsin Card Sorting Test (WCST) performance (error %) among alcoholics (correlation coefficients from 0.49 to 0.56), which suggests that the magnitude of presynaptic dopamine function alteration correlates with the degree of disability to modify one's behavior. The results do not give support to the hypothesis of generally decreased striatal dopamine turnover in type 1 alcoholism, but on the contrary indicate an increased presynaptic dopamine function. This may represent a compensatory mechanism to low postsynaptic DA function. The low presynaptic DA function observed in the left caudate of two patients suggests that type 1 alcoholism may be a heterogeneous disorder.

Adult↗

PubMed1998

Low diastolic blood pressure and mortality in a population-based cohort of 16913 hypertensive patients in North Karelia, Finland.

OBJECTIVE: To examine the relationship between mortality and diastolic blood pressure during treatment. DESIGN: A prospective follow-up of a population-based dynamic cohort of hypertensive patients. SETTING: Province of North Karelia, eastern Finland. PATIENTS: A cohort of 16 913 North Karelian hypertensive patients in hypertension register of the North Karelia Project, who had been followed up since 1972 until the end of 1985. Most of these patients had been under antihypertensive drug therapy during the follow-up. MAIN OUTCOME MEASURES: Death: all deaths (n = 4490), deaths from cardiovascular disease (n = 2995) and deaths from non-cardiovascular disease (n = 1495). RESULTS: Of all deaths, 17% of those among men and 24% of those among women were of patients with mean diastolic blood pressures less than 90 mmHg. We found a U-shaped relationship between diastolic blood pressure and total, cardiovascular and non-cardiovascular mortalities. We investigated this relationship in more detail using Cox regression model. Low diastolic blood pressure was associated independently with increased mortality for the patients aged 50 years or more at baseline. The occurrence of cardiac failure and other cardiovascular complications of hypertension were more important determinants of mortality than was low diastolic blood pressure alone. CONCLUSIONS: We demonstrated that there is an association between low diastolic blood pressure and mortality for treated hypertensive patients aged 50-69 years. The clinical importance of this relationship for patients without any cardiovascular complications of hypertension seems negligible. For patients with complications, these complications are likely to be primary factors causing greater than normal mortality and low diastolic blood pressure is mostly a secondary phenomenon. Our data do not lend support to speculations that there is overtreatment of hypertension, which would increase mortality through making diastolic blood pressures too low.

Aged↗

PubMed1997

Attitudes to cuts in expenditure and increased fees in health care.

The aim of this postal questionnaire study was to measure attitudes to cuts and increased fees in health care in various Finnish population groups. Four groups were identified; a population sample of 2000 subjects, aged 18-70 y; a random sample of 1500 medical doctors of working age; a random sample of 1000 nurses of working age; and a sample of 2200 politicians involved in health and social care administration, mostly at the municipal level (altogether 6700 subjects). The main questionnaire included, among other things, the following questions: (1) Which of 18 specified medical activities at the primary health care level could be cut without causing severe harm to the population? (2) For which of 13 specified medical activities should clients pay at least 50% of the real cost? All the groups indicated the greatest willingness to cut expenditure on health education, occupational health services, hygiene inspection, substance abuse care, rehabilitation services for war veterans, and family planning. All the groups were least willing to make cuts in home care for disabled and elderly people, maternity services and clinics for under-fives. Most respondents in all groups felt that the activities for which clients should pay at least 50% of the cost were visits to physicians, occupational health services and dental services, whereas clinics for under-five and home care for disabled and elderly persons should be kept free of charge. As a conclusion, primary health care and prevention of diseases for small children, mothers, the elderly and disabled persons, were prioritised by all the groups.

Adolescent↗

PubMed1997

Doctors' willingness to refer elderly patients for elective surgery.

OBJECTIVES: We aimed to examine the relationship between doctors' willingness to refer elderly patients for elective surgical operations and patients' age, comorbidity, institutionalization, living habits and signs of dementia. METHOD: A random selection of 837 medical doctors in Finland (response rate 56%) received a postal questionnaire consisting of 18 vignettes, i.e. imaginary patient cases. Respondents were asked whether they would refer the patient on the vignette for elective surgical operation, treat the patient conservatively, or choose some other alternative. In the vignettes, the age of patients was randomly varied between 65 and 85, at 5-year intervals, to provide eight different questionnaires, and each respondent obtained one of them. RESULTS: The proportion of doctors willing to refer the patients for surgery was inversely related to the patients' age: in all the vignettes, doctors said they would refer fewer patients in the oldest age groups. Almost all the doctors claimed they would refer healthy, home-dwelling persons aged 65-70 years for operations. In the oldest age groups of patients, the doctors' willingness to refer was highest for cataract operations (69%) and hip prosthesis operations (63%), but only 18% of doctors would refer such patients for coronary by-pass operations. Comorbidity and institutionalization were associated with fewer doctors referring the patients: the proportion of doctors willing to refer these patients was about half that of those willing to refer otherwise healthy and home-dwelling patients. Smoking by patients also decreased the proportions of doctors willing to refer, but moderate signs of dementia in an elderly patient with cataract were associated with only a slight decrease in referring. CONCLUSIONS: Doctors are less willing to refer old patients for elective surgery, but comorbidity, patients' lifestyle and institutionalization have a greater effect on referrals than age.

Age Factors↗

PubMed1996

Risk of homicidal behavior among discharged forensic psychiatric patients.

We studied the risk of homicidal behavior among 281 released male forensic psychiatric patients during the 14-year period 1978-1991. Released patients were about 300 times more likely to commit a homicide than the general male population during the first year outside hospital, and the corresponding risk was 53-fold during a mean follow-up period of 7.8 years. The odds ratio for committing a homicide among all Finnish schizophrenics during the 12-year period 1980-1991 was 9.7, which indicates that previous criminality associated with schizophrenia also increases the risk of homicidal behavior remarkably when compared with schizophrenia per se. We believe that this kind of epidemiological approach is a useful method of identifying and classifying factors associated with very high risk of homicidal behavior and preventing homicidal behavior among high-risk populations.

Adolescent↗

PubMed1996

Citalopram in the treatment of alcoholism: a double-blind placebo-controlled study.

The effect of citalopram and placebo in the treatment of alcoholism was studied in a sample of 62 patients with a follow-up period of four months. The results imply that the new 5-HT re-uptake inhibitor citalopram is significantly more effective than placebo in the treatment of alcoholism. The present study indicates that even severe alcoholism may be treated effectively with a generally available psychopharmacological agent.

Adult↗

PubMed1996

Random paired scenarios--a method for investigating attitudes to prioritisation in medicine.

OBJECTIVE: This article describes a method for investigating attitudes towards prioritisation in medicine. SETTING: University of Kuopio, Finland. DESIGN: The method consisted of a set of 24 paired scenarios, which were imaginary patient cases, each containing three different ethical indicators randomly selected from a list of indicators (for example, child, rich patient, severe disease etc.). The scenarios were grouped into 12 random pairs and the procedure was repeated four times, resulting in 12 scenario pairs arranged randomly in five different sets. SURVEY: This method was tested with four groups of subjects (n = 8, n = 47, n = 104 and n = 36). RESULTS: Children and patients with a severe disease were prioritised in all groups. The aged, patients with a mild disease and patients with a self-acquired disease were negatively prioritised in all groups. Poor or rich patients were prioritised in some groups but negatively prioritised in others. CONCLUSIONS: The validity and reliability of this method are good and it is suitable for investigating attitudes towards medical prioritisation.

Aged↗

PubMed1996

Comparison of doctors', nurses', politicians' and public attitudes to health care priorities.

OBJECTIVES: The aim of this study was to investigate differences in attitudes concerning prioritisation in health care held by doctors, nurses, local politicians and the general public. METHODS: Four groups were established: a population sample of 2000 subjects, aged 18-70 years; a random sample of 1500 doctors of working age; a random sample of 1000 nurses of working age; and a sample of 2200 politicians involved in health and social care administration, mostly at the municipal level (altogether 6700 subjects). The main questionnaire contained, among other things, a list of 12 statements concerning ethical decisions regarding prioritisation in health care. Respondents were asked to indicate their level of agreement with each statement. RESULTS: Most respondents in all the groups felt able to express an opinion on the statements. Despite considerable professional and cultural differences between groups, the views were generally similar. On the whole, respondents supported liberal policies in which the community took responsibility for subsidising health care. When differences between groups occurred, it was usually the doctors who held discordant views. Doctors were less inclined to consider a patient's economic status as a determinant of priority for treatment than the other three groups. Both doctors and nurses were less punitive towards patients with self-induced diseases. And doctors and politicians were more likely to feel further cuts in health care expenditure were possible than was true for nurses and the public. CONCLUSIONS: While considerable uniformity of opinion exists on ethical issues of prioritisation between the principal interested parties, the views of doctors differ substantially on some matters. If prioritisation was left entirely to doctors, health care provision would not reflect the views of other groups in some important ways.

Attitude of Health Personnel↗

PubMed1995

Altered striatal dopamine re-uptake site densities in habitually violent and non-violent alcoholics.

Animal studies suggest that development of substance dependence is associated with dopaminergic activity in striatum and the limbic system. Several genetic studies indicate that allele A1 is associated with both D2 receptor density and alcoholism, although these findings have remained controversial. We studied striatal dopamine (DA) re-uptake site densities in 48 subjects (19 healthy controls, 19 habitually impulsive violent alcoholics, and 10 non-violent alcoholics) with single photon emission computed tomography (SPECT) using iodine-123-labelled 2 beta-carbomethoxy-3 beta(4-iodophenyl)tropane, (beta-CIT) as a tracer. Blind quantitative analysis revealed that the striatal DA transporter density was markedly lower in non-violent alcoholics than in healthy controls (P < 0.001), while violent alcoholics had slightly higher DA transporter densities than controls (P < 0.10). The results indicate that both types of alcoholics have alterations in striatal dopaminergic system, though these occur in opposite directions.

Adult↗

PubMed1994

Health, functional capacity, health behaviour, psychosocial factors and falling in old age.

This study was done to investigate health, functional capacity, health behaviour and psychosocial factors associated with the occurrence of falls leading to medical treatment in elderly Finns (> or = 65 yrs). An unmatched case-control study was performed in the Town of Pori, Western Finland during the 12 months from September 1987 to August 1988. The series consisted of 380 fallers who sought medical treatment and 342 elderly control subjects selected randomly from the population register. Logistic regression analysis showed falls in the home-dwelling men to be associated with high age, high white blood cell count, poor self-perceived health and presence of depressive symptoms. In the home-dwelling women the occurrence of falls was associated with high white blood cell count, low blood haemoglobin level, high age and being afraid of falling. The occurrence of falling in the women showed a tendency to be associated with poor functional capacity, high axillary temperature and poor mental capacity. In the log-linear model in the men occurrence of falling was independently associated with poor self-perceived health and with high white blood cell count. In the women occurrence of falling was associated with high age, poor functional capacity, poor mental capacity, low blood haemoglobin and high white blood cell count. High age was associated with poor functional capacity and with low blood haemoglobin. Poor functional capacity and poor mental capacity were associated with each other. Poor mental and functional capacities, anaemia in women and acute infections are associated with falls leading to medical treatment in the elderly. Elderly subjects with an acute infection should be treated carefully to avoid falling complications.

Accidental Falls↗

PubMed1994

Overweight, underweight and mortality among the aged.

OBJECTIVE: To clarify the influence of overweight and underweight on the total mortality as well as on different causes of death in an unselected population of old people. DESIGN: The cohort of the aged population was examined in 1971. The survival time of the cohort was followed for ten years. SETTINGS: Rural commune of Hankasalmi in Central Finland. PARTICIPANTS: 721 (80% of total aged population) subjects aged 65 years or over (310 men and 411 women). OUTCOME MEASURES: 10 years survival rate and causes of death by body mass index quartiles and sex. RESULTS: The women in the lowest BMI quartile had the highest mortality in ten-year follow-up (a 26% decrease in survival time). The differences between the total mortality of the other quartiles were small. In the lowest BMI quartile there was overmortality from respiratory diseases and tumours, and undermortality from cardiovascular diseases. In the highest BMI quartile the main groups of causes of death did not differ essentially from those in the whole cohort. CONCLUSION: Underweight was as strong a predictor of mortality, and even stronger, than overweight.

Aged↗

PubMed1993

The relationship between mental health and drug use.

The aim was to examine the relationship between mental health and use of different kinds of drugs. The study was a cross-sectional survey of a total population aged 45-69 years, conducted in 2 municipalities in southwestern Finland. Altogether 1821 people (80% of those invited), 815 men and 1006 women, took part in the screening. The subjects were examined by a questionnaire mailed beforehand and checked in a personal interview. The questionnaire contained questions about the currently used drugs and Goldberg's questionnaire on mental health. Half of the people examined used prescribed drugs currently, more women used drugs than men, and the use of drugs increased with age. Mental symptoms measured with the Goldberg Index appeared in one fifth of the subjects, showing a slight increase with age. Men with mental symptoms showed a fourfold psychotropic drug use compared with the men without mental symptoms. The women with mental symptoms showed a threefold use of psychotropic drugs compared with the women without mental symptoms. Similar differences were found also in other drug groups, for example cardiac glycosides, other cardiovascular drugs, analgesics and drugs for respiratory and digestive organs. Persons with mental disorders showed a high tendency to drug use, also when those drugs had no direct attachment to the mental problem. Men seemed more liable to somatization of mental problems than women.

Age Factors↗