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1.
Acta Neurol Scand ; 123(3): 193-200, 2011 Mar.
Article in English | MEDLINE | ID: mdl-20545629

ABSTRACT

OBJECTIVES: To evaluate the risk factors for recurrent falling and mortality in Parkinson's disease (PD) in a prospective study design. MATERIALS AND METHODS: One hundred and twenty-five PD patients were included in the study. Baseline medical data were collected, and patients were clinically tested for mobility and balance. Falls were prospectively recorded for 2 years. Mortality was documented 4 years after the baseline. RESULTS: Seventy-nine patients reported altogether 3125 falls during the follow-up, and 59 patients were classified as recurrent fallers. Altogether 126 fall injuries including six fractures were reported. Eighteen patients had died by the time of the hospital chart review. History of falling (OR 3.02, 95% CI 1.23-7.44) and the Unified Parkinson's Disease Rating Scale activities of daily living score (OR 1.13, 95% CI 1.04-1.22) were independent risk factors for recurrent falling in PD, whereas slow walking speed (OR 16.28, 95% CI 1.85-142.97) was an independent risk factor for mortality in PD. CONCLUSIONS: History of falling and disease severity indicate increased risk of recurrent falls in PD, while patients with slow walking speed may have an increased risk of mortality. Recurrent falling was not associated with increased risk of mortality in PD in this study.


Subject(s)
Accidental Falls/mortality , Parkinson Disease/mortality , Accidental Falls/prevention & control , Aged , Aged, 80 and over , Comorbidity/trends , Female , Follow-Up Studies , Humans , Male , Mobility Limitation , Parkinson Disease/physiopathology , Postural Balance/physiology , Prospective Studies , Recurrence , Risk Factors
2.
Acta Anaesthesiol Scand ; 54(1): 65-9, 2010 Jan.
Article in English | MEDLINE | ID: mdl-19719812

ABSTRACT

BACKGROUND: In clinical practice, we noticed a greater than expected spread of sensory spinal block in patients with rheumatoid arthritis. We decided to test this impression and compared the spread of standard spinal anaesthesia in rheumatoid and non-rheumatoid control patients. METHODS: Spinal anaesthesia with 3.4 ml (17 mg) of plain bupivacaine was administered to 50 patients with seropositive rheumatioid arthritis and to 50 non-rheumatoid control patients. The protocol was standardised for all patients. All the patients were undergoing lower limb surgery and the rheumatoid patients were operated on due to their rheumatoid disease. The spread of sensory block was recorded 30 min from the dural puncture using a pin prick test and a cold ice-filled container. The impact of body mass index (BMI), height and age on the spread were analysed. RESULTS: The spread of sensory block was greater in patients with rheumatoid arthritis (15.6+/-3.1 dermatomes) than in non-rheumatoid patients (14.1+/-3.3 dermatomes) (P<0.05). Increasing BMI was related to cephalad spread of block in the rheumatoid group (P<0.05), but not in the control group. CONCLUSION: The mean spread of sensory block 30 min after the injection of plain bupivacaine was 1.5 segments cephalad in patients with rheumatoid arthritis than in those without this disease. BMI might be a patient-related factor contributing to the extent of the block in rheumatoid patients. These findings should be considered when performing a spinal block in rheumatoid patients.


Subject(s)
Anesthesia, Spinal/methods , Arthritis, Rheumatoid/physiopathology , Body Mass Index , Sensation/drug effects , Anesthetics, Local , Bupivacaine , Cerebrospinal Fluid/physiology , Cold Temperature , Female , Humans , Lumbar Vertebrae , Male , Middle Aged , Pain Measurement , Sensation/physiology , Thoracic Vertebrae , Treatment Outcome
3.
Eur J Neurol ; 16(1): 105-11, 2009 Jan.
Article in English | MEDLINE | ID: mdl-19018871

ABSTRACT

BACKGROUND AND PURPOSE: To assess the clinical correlates of mobility and balance, and to identify the risk factors for falls in Parkinson's disease (PD). METHODS: One-hundred and nineteen PD patients underwent clinical examination and tests for mobility and balance using the Timed Up & Go (TUG) test, walking speed, and the measurement of postural sway. RESULTS: The fallers (35% of the subjects) performed significantly worse in the TUG test than the non-fallers, and they also had a slower walking speed (P = 0.037 and P = 0.006, respectively). The total Unified Parkinson's Disease Rating Scale (UPDRS) score and age were positively associated with the TUG-test score. The severity of the disease and the use of walking aids correlated negatively with the walking speed, whereas the use of dopamine agonists was positively associated with the walking speed. The UPDRS total score [odds ratio (OR) 1.04, 95% confidence intervals (CI) 1.01-1.07] and increased postural sway (OR 1.25, 95% CI 1.02-1.54) were independent risk factors for falling in PD. CONCLUSION: Advanced age and severity of the disease are related to impaired mobility and balance in PD patients. The severity of the disease and increased postural sway seem to be the most important independent risk factors for falling in PD.


Subject(s)
Accidental Falls , Gait Disorders, Neurologic/physiopathology , Gait/physiology , Parkinson Disease/physiopathology , Postural Balance/physiology , Accidental Falls/prevention & control , Aged , Cohort Studies , Comorbidity/trends , Female , Gait Disorders, Neurologic/epidemiology , Humans , Male , Middle Aged , Parkinson Disease/epidemiology
4.
Eur J Neurol ; 14(4): 373-8, 2007 Apr.
Article in English | MEDLINE | ID: mdl-17388983

ABSTRACT

Our study aimed to investigate the cardiovascular autonomic regulation related to the wearing-off phenomenon in Parkinson's disease (PD). We measured blood pressure (BP) and heart rate (HR) at rest and during orthostatic test in 16 patients with PD with wearing-off and in 15 patients with PD without wearing-off both before (baseline) and repetitively at 1-h intervals for up to 4 h after the morning PD medication dose. The patients with wearing-off had fluctuation of BP during the observation period, BP increasing when the motor performance worsened and vice versa. The mean supine BP was at its highest at the baseline measurement (patients with wearing-off, 145 +/- 18 mmHg; patients without wearing-off, 138 +/- 17 mmHg), fell during the first hour (patients with wearing-off, 119 +/- 17 mmHg; patients without wearing-off, 126 +/- 18 mmHg), and then rose again toward the end of the observation period (patients with wearing-off, 136 +/- 15 mmHg; patients without wearing-off, 138 +/- 18 mmHg). This BP change was statistically significant only in PD patients with wearing-off (P < 0.001). In conclusion, BP seems to fluctuate with motor impairment in PD patients with wearing-off. This fluctuation may represent autonomic dysfunction caused by the PD process itself, the effect of PD medication, or both.


Subject(s)
Antiparkinson Agents/therapeutic use , Blood Pressure/drug effects , Heart Rate/drug effects , Levodopa/therapeutic use , Parkinson Disease/drug therapy , Aged , Female , Humans , Male , Middle Aged , Motor Activity/drug effects
5.
J Neurol Neurosurg Psychiatry ; 76(10): 1382-6, 2005 Oct.
Article in English | MEDLINE | ID: mdl-16170081

ABSTRACT

OBJECTIVES: To measure interictal circadian rhythm of heart rate (HR) variability in patients with temporal lobe epilepsy (TLE) using a 24 hour ECG recording. METHODS: Various conventional and dynamic fractal measures of HR variability were analysed in 17 patients with refractory TLE, 20 patients with well controlled TLE, and 37 healthy age and sex matched control subjects. RESULTS: The SD of all RR intervals (p < 0.01), the measured power spectral components of HR variability (low frequency power (p < 0.01), high frequency power (p < 0.05)), and the SD1 (p < 0.05) and SD2 (p < 0.01) Poincaré two dimensional vector analysis measurements were suppressed in the patients. This suppression was observed during both day and night time; however, it was more pronounced at night, and nocturnal increase in HR variability usually seen in the normal population could not be detected in the patients. The HR variability measures did not correlate with the duration of epilepsy, the age of the patients, or with the anti-epileptic drugs used. CONCLUSION: TLE was associated with reduced HR variability, which was more pronounced during night than day, and the nocturnal increase in HR variability was abolished in patients with TLE. The alteration in autonomic regulation of HR variability was similar in patients with both refractory and well controlled TLE.


Subject(s)
Circadian Rhythm/physiology , Epilepsy, Temporal Lobe/physiopathology , Heart Rate/physiology , Adult , Anticonvulsants/therapeutic use , Electrocardiography , Epilepsy, Temporal Lobe/drug therapy , Female , Humans , Male , Severity of Illness Index
6.
Stroke ; 36(5): 1016-20, 2005 May.
Article in English | MEDLINE | ID: mdl-15802631

ABSTRACT

BACKGROUND AND PURPOSE: Measurement of natriuretic peptides provides prognostic information in various patient populations. The prognostic value of natriuretic peptides among patients with acute stroke is not known, although elevated peptide levels have been observed. METHODS: A series of 51 patients (mean age, 68+/-11 years) with first-ever ischemic stroke underwent a comprehensive clinical examination and measurements of plasma atrial natriuretic peptides (N-ANP) and brain natriuretic peptides (N-BNP) in the acute phase of stroke. The patients were followed-up for 44+/-21 months. Risk factors for all-cause mortality were assessed. Control populations, matched for gender and age, consisted of 51 patients with acute myocardial infarction (AMI) and 25 healthy subjects. RESULTS: Plasma concentrations of N-ANP (mean+/-SD, 988+/-993 pmol/L) and N-BNP (751+/-1608 pmol/L) in the stroke patients were at the same level as those in the AMI patients (NS for both), but significantly higher than those of the healthy subjects (358+/-103 pmol/L, P<0.001 and 54+/-26 pmol/L, P<0.01, respectively). Elevated levels of N-ANP and N-BNP predicted mortality after stroke (risk ratio [RR] 4.3, P<0.01 and RR 3.9, P<0.01, respectively) and after AMI (P<0.05), and remained independent predictors of death after stroke even after adjustment for age, diabetes, coronary artery disease, and medication (RR 3.9, P<0.05 and RR 3.7, P<0.05, respectively). CONCLUSIONS: Plasma levels of natriuretic peptides are elevated in the acute phase of stroke and predict poststroke mortality.


Subject(s)
Atrial Natriuretic Factor/blood , Nerve Tissue Proteins/blood , Peptide Fragments/blood , Protein Precursors/blood , Stroke/mortality , Aged , Brain Infarction/blood , Case-Control Studies , Female , Humans , Male , Natriuretic Peptide, Brain , Prognosis , Prospective Studies , Risk Factors , Stroke/blood , Stroke/diagnosis
7.
Neurology ; 62(10): 1822-6, 2004 May 25.
Article in English | MEDLINE | ID: mdl-15159485

ABSTRACT

BACKGROUND: Impaired cardiovascular autonomic regulation assessed by heart rate (HR) variability provides prognostic information in patients with heart disease as well as among elderly. Reduced HR variability has been described in stroke patients, but the prognostic significance of HR variability measures after stroke has not been studied. METHODS: A series of 84 patients (mean age 59 +/- 12 years) with an acute first-ever ischemic stroke underwent a comprehensive clinical investigation, laboratory tests, and 24-hour EKG recordings and were followed up for 7 years (mean 83 +/- 54 months). Various conventional and newer qualitative measures of HR variability were analyzed from the baseline 24-hour EKG. Risk factors for all-cause mortality were assessed. RESULTS: During the follow-up, 33 (39%) patients died and 51 survived. Among all the variables analyzed, abnormal long-term HR variability measure power-law slope beta (beta < -1.5), reflecting an altered distribution of spectral characteristics over ultra and very low frequency bands, was the best univariate predictor of death (hazard ratio 4.5, 95% CI 2.2 to 9.5, p < 0.001). High age, poor Scandinavian Stroke Scale score, and abnormal short-term HR variability scaling measure (alpha) also predicted mortality in univariate analysis. In multivariate analysis, after adjustment for age, the only independent predictor of the risk of death was abnormal long-term power-law slope beta (hazard ratio 3.8, CI 1.8 to 8.2, p < 0.001). Conventional HR variability measures showed no prognostic power. CONCLUSION: Abnormal long-term HR dynamics predict poststroke mortality. This measure may have value in the risk stratification of stroke patients.


Subject(s)
Brain Ischemia/mortality , Heart Rate , Aged , Brain Ischemia/physiopathology , Cause of Death , Electrocardiography , Female , Follow-Up Studies , Humans , Life Tables , Male , Middle Aged , Prospective Studies , Risk Assessment , Survival Analysis
8.
J Neurol Neurosurg Psychiatry ; 72(1): 26-30, 2002 Jan.
Article in English | MEDLINE | ID: mdl-11784820

ABSTRACT

OBJECTIVES: Disorders of cardiovascular and other autonomic nervous system functions are often found in patients with temporal lobe epilepsy (TLE). Cardiovascular dysregulation in TLE has previously been quantified assessing traditional time and frequency domain measures of heart rate (HR) variability from short term ECG recordings. However, new complexity and fractal measures of HR variability based on non-linear dynamics and fractals ("chaos theory") may disclose certain patterns of HR dynamics that cannot be detected using only conventional measures. METHODS: In addition to the traditional spectral and non-spectral components of HR variability, fractal correlation properties, approximate entropy (ApEn) of RR interval dynamics, and the slope of the power law relation were measured from 24 hour ambulatory ECG recordings to evaluate interictal autonomic cardiovascular regulatory function in 19 patients with refractory TLE, 25 patients with well controlled TLE, and in 34 healthy age and sex matched control subjects. RESULTS: The traditional time and frequency domain measures were lower in patients with TLE than in controls (p<0.05). In addition, the power law slope (p<0.005) and ApEn (p<0.05) were also reduced in TLE patients. Furthermore, ApEn was smaller in patients with refractory TLE than in patients with well-controlled TLE ( p<0.01), whereas the long term fractal correlation value alpha2 was lower in patients with well controlled TLE (p<0.05). An altered HR variation was not associated with any particular AED regimen. CONCLUSIONS: In addition to reduced overall HR variability, the long term fractal organisation and complexity of HR dynamics seem to be altered in TLE. These abnormalities in HR behaviour may partly contribute to the occurrence of adverse cardiovascular events, such as life threatening arrhythmias in patients with TLE.


Subject(s)
Anticonvulsants/administration & dosage , Epilepsy, Temporal Lobe/physiopathology , Heart Rate/physiology , Adult , Anticonvulsants/adverse effects , Autonomic Nervous System/drug effects , Autonomic Nervous System/physiopathology , Death, Sudden/etiology , Electrocardiography, Ambulatory , Epilepsy, Temporal Lobe/drug therapy , Female , Fractals , Heart Rate/drug effects , Humans , Male , Nonlinear Dynamics , Risk Factors , Signal Processing, Computer-Assisted
9.
J Neurol Neurosurg Psychiatry ; 70(3): 305-10, 2001 Mar.
Article in English | MEDLINE | ID: mdl-11181850

ABSTRACT

OBJECTIVES: Cardiovascular reflex tests have shown both sympathetic and parasympathetic failure in Parkinson's disease. These tests, however, describe the autonomic responses during a restricted time period and have great individual variability, providing a limited view of the autonomic cardiac control mechanisms. Thus, they do not reflect tonic autonomic regulation. The aim was to examine tonic autonomic cardiovascular regulation in untreated patients with Parkinson's disease. METHODS: 24 Hour ambulatory ECG was recorded in 54 untreated patients with Parkinson's disease and 47 age matched healthy subjects. In addition to the traditional spectral (very low frequency, VLF; low frequency, LF; high frequency, HF) and non-spectral components of heart rate variability, instantaneous beat to beat variability (SD1) and long term continuous variability (SD2) derived from Poincaré plots, and the slope of the power law relation were analysed. RESULTS: All spectral components (p<0.01) and the slope of the power-law relation (p<0.01) were lower in the patients with Parkinson's disease than in the control subjects. The Unified Parkinson's disease rating scale total and motor scores had a negative correlation with VLF and LF power spectrum values and the power law relation slopes. Patients with mild hypokinesia had higher HF values than patients with more severe hypokinesia. Tremor and rigidity were not associated with the HR variability parameters. CONCLUSIONS: Parkinson's disease causes dysfunction of the diurnal autonomic cardiovascular regulation as demonstrated by the spectral measures of heart rate variability and the slope of the power law relation. This dysfunction seems to be more profound in patients with more severe Parkinson's disease.


Subject(s)
Heart Rate/physiology , Parkinson Disease/physiopathology , Aged , Circadian Rhythm/physiology , Electrocardiography , Female , Humans , Male , Middle Aged
10.
Arch Phys Med Rehabil ; 81(12): 1541-6, 2000 Dec.
Article in English | MEDLINE | ID: mdl-11128887

ABSTRACT

OBJECTIVE: To evaluate the domain-specific quality of life (QOL), including physical, social and role functioning, mental health, vitality, bodily pain, and general health domains, and to assess QOL's clinical and sociodemographic correlates in patients who were disabled by ischemic stroke. DESIGN: One-year prospective study of an inception cohort of patients with first-ever brain infarction. SETTING: Stroke unit of a neurologic department of a university hospital. PATIENTS: Eighty-five consecutive patients (36 women, 49 men; mean age +/- SD, 65+/-12.5 yr) with first-ever stroke of a mild to moderate nature caused by brain infarction. MAIN OUTCOME MEASURES: Patients were examined at 3 and 12 months poststroke. QOL was measured using the RAND 36-Item Health Survey. The variables studied were lateralization of cerebral lesion, neurologic and functional status, depression, age, gender, marital status, and living conditions. Depression was evaluated according to the criteria of Diagnostic and Statistical Manual of Mental Disorders, Revised Third Edition. Neurologic impairment was assessed by Scandinavian Stroke Scale, performance in activities of daily living by the Barthel index, and the intellectual deterioration by the Mini-Mental State Examination. RESULTS: QOL was poorer for the patients with mild to moderate stroke impairments at 3 months poststroke. The test domains most prone to being affected were physical functioning, physical role limitations, vitality, and general health. Only the domains of physical functioning and physical role limitations improved during the follow-up at 1 year. Depression, although mostly minor, was the most important reason for impaired QOL. Depression, being married, and age emerged as significant independent contributors to the low score value of vitality. Depression and being married were related to the low score value of physical role limitations. CONCLUSIONS: Stroke affects QOL, impairing its physical and psychosocial domains. The most important determinants of low QOL seem to be depression and being married. These findings provide new challenges for stroke rehabilitation, calling for identification of patients and spouses in need of supportive services.


Subject(s)
Brain Infarction/rehabilitation , Quality of Life , Adult , Aged , Aged, 80 and over , Brain Infarction/psychology , Case-Control Studies , Depression/epidemiology , Depression/etiology , Depressive Disorder/epidemiology , Depressive Disorder/etiology , Female , Finland/epidemiology , Humans , Logistic Models , Male , Marital Status , Matched-Pair Analysis , Middle Aged , Prospective Studies , Statistics, Nonparametric
11.
Cerebrovasc Dis ; 10(6): 455-61, 2000.
Article in English | MEDLINE | ID: mdl-11070376

ABSTRACT

Aphasia, depression, and cognitive dysfunction are common consequences of stroke, but knowledge of their interrelationship is limited. This 1-year prospective study was designed to evaluate prevalence and course of post-stroke aphasia and to study its psychiatric, neurological, and cognitive correlates. We studied a series of 106 consecutive patients (46 women and 60 men, mean age 65. 8 years) with first-ever ischaemic brain infarction. The patients were clinically examined, and presence and type of aphasia were evaluated during the 1st week after stroke and 3 and 12 months later. Psychiatric and neuropsychological evaluations were performed 3 and 12 months after stroke. Aphasia was diagnosed in 34% of the patients during the acute phase, and two thirds of them remained so 12 months later. Seventy percent of the aphasic patients fulfilled the DSM-III-R criteria of depression 3 months and 62% 12 months after stroke. The prevalence of major depression increased from 11 to 33% during the 12-month follow-up period. The non-verbal neuropsychological test performance in the aphasic patients was significantly inferior to that of the patients with dominant hemisphere lesion without aphasia. One third of the patients with ischaemic stroke suffer from communicative disorders which seem to increase the risk of depression and non-verbal cognitive deficits. Although the prevalence of depression in aphasic patients decreases in the long term, the proportion of patients suffering from major depression seems to increase. We emphasize the importance of the multidimensional evaluation of aphasic stroke patients.


Subject(s)
Aphasia/epidemiology , Brain Ischemia/epidemiology , Cognition Disorders/epidemiology , Depression/epidemiology , Depressive Disorder, Major/epidemiology , Stroke/epidemiology , Adult , Aged , Aphasia/psychology , Brain Ischemia/psychology , Cognition Disorders/psychology , Female , Frail Elderly , Humans , Male , Middle Aged , Neuropsychological Tests , Prevalence , Prospective Studies , Stroke/psychology
13.
Acta Neurol Scand ; 101(3): 202-8, 2000 Mar.
Article in English | MEDLINE | ID: mdl-10705944

ABSTRACT

OBJECTIVE: Various degenerative cerebral diseases and even depression may cause abnormalities of the cognitive event related potentials (ERPs). We conducted the present study to elucidate the effects of ischemic stroke on the P300 ERP component. MATERIAL AND METHODS: We recorded the P300 wave using an auditory oddball paradigm in 38 consecutive brain infarct patients with mild neurological deficits at 3 and 12 months post-stroke, and in 29 healthy control subjects. RESULTS: Brain infarction slightly prolonged the P300 latency, and the observed delay was related to the presence and degree of post-stroke depression evaluated with the Zung Depression Scale and the DSM-III criteria. Infarction did not affect the P300 amplitude or its distribution on the scalp. The results of the patients with hemispheric brain infarction and those of the patients with brainstem infarction were similar, and also the values of the patients with the left- and right-sided lesions. The normal physiological correlation between subject age and the P300 latency was absent at 3 months post-stroke, but was present at 12 months post-stroke. CONCLUSION: Brain infarction delays the P300 ERP and temporarily distorts its age-related physiology. The increase of the P300 latency seems to be associated with the post-stroke depression.


Subject(s)
Brain Ischemia/diagnosis , Event-Related Potentials, P300/physiology , Evoked Potentials, Auditory/physiology , Acute Disease , Aged , Brain Ischemia/psychology , Cognition Disorders/diagnosis , Depressive Disorder, Major/diagnosis , Depressive Disorder, Major/etiology , Electroencephalography , Female , Follow-Up Studies , Functional Laterality/physiology , Humans , Male , Middle Aged , Neuropsychological Tests , Prospective Studies , Reaction Time , Severity of Illness Index
14.
Epilepsia ; 41(1): 42-7, 2000 Jan.
Article in English | MEDLINE | ID: mdl-10643922

ABSTRACT

PURPOSE: To measure interictal cardiovascular autonomic functions in patients with either refractory or well-controlled temporal lobe epilepsy (TLE). METHODS: For autonomic assessment, heart rate variation during normal and deep breathing, Valsalva maneuver, and tilting were measured in 19 patients with chronic refractory TLE, 19 patients with well-controlled TLE, and 38 age- and sex-matched healthy control subjects. Blood pressure responses to tilting and isometric work also were evaluated. RESULTS: Heart-rate (HR) variation during normal breathing (p = 0.006) and tilting (p = 0.043) was lower in patients with refractory TLE than in control subjects. Heart-rate response to tilting (p = 0.036) was also lower in patients with well-controlled TLE than in control subjects. Blood-pressure responses showed no differences between the patients and the control subjects. Patients taking carbamazepine (CBZ) medication had decreased HR responses to deep breathing (p = 0.046) and to tilting (p = 0.014) compared with the control subjects. CONCLUSIONS: Refractory TLE seems to be associated with dysfunction of the cardiovascular autonomic regulation, manifesting as impaired HR responses to certain stimuli. Interictal autonomic dysfunction is seen in patients with well-controlled TLE as well, but it may be more evident in patients with refractory epilepsy. CBZ medication may also be associated with altered autonomic cardiac control.


Subject(s)
Autonomic Nervous System/physiopathology , Blood Pressure , Epilepsy, Temporal Lobe/physiopathology , Heart Rate , Adult , Anticonvulsants/therapeutic use , Cardiovascular System/physiopathology , Case-Control Studies , Epilepsy, Temporal Lobe/drug therapy , Female , Head-Down Tilt , Humans , Male , Predictive Value of Tests , Prognosis , Respiration , Valsalva Maneuver
15.
J Neurol ; 247(11): 868-74, 2000 Nov.
Article in English | MEDLINE | ID: mdl-11151420

ABSTRACT

Autonomic nervous system (ANS) involvement is frequently found in Parkinson's disease (PD), but its causal relationship to the disease itself and its medication is unclear. We evaluated the effects of PD medications on cardiovascular ANS functions. Heart rate (HR) responses to normal and deep breathing, the Valsalva manoeuvre and tilting, and blood pressure (BP) responses to tilting and isometric work were measured prospectively in 60 untreated PD patients randomised to receive either levodopa (n = 20), bromocriptine (n = 20) or selegiline (n = 20) as their initial treatment. The results were compared with those of 28 healthy controls. The responses were recorded at baseline, after 6 months on medication and following a 6-week washout period. At baseline HR responses to normal breathing, deep breathing and tilting were already lower and the fall in the systolic BP immediately and at 5 min after tilting was more pronounced in the PD patients than in the controls. Six months' levodopa treatment diminished the systolic BP fall after tilting when compared to baseline, whereas bromocriptine and selegiline increased the fall in systolic BP after tilting and selegiline diminished the BP responses to isometric work. The BP responses returned to the baseline values during the washout period. The drugs induced no change in the HR responses. Thus PD itself causes autonomic dysfunction leading to abnormalities in HR and BP regulation and the PD medications seem to modify ANS responses further. Bromocriptine and selegiline, in contrast to levodopa, increase the orthostatic BP fall and suppress the BP response to isometric exercise reflecting mainly impairment of the sympathetic regulation.


Subject(s)
Bromocriptine/therapeutic use , Cardiovascular System/drug effects , Levodopa/therapeutic use , Parkinson Disease/drug therapy , Selegiline/therapeutic use , Aged , Blood Pressure/drug effects , Blood Pressure/physiology , Cardiovascular System/physiopathology , Female , Humans , Male , Middle Aged , Parkinson Disease/physiopathology
16.
Clin Auton Res ; 10(6): 337-42, 2000 Dec.
Article in English | MEDLINE | ID: mdl-11324989

ABSTRACT

The sympathetic skin response (SSR) was used to evaluate sympathetic sudomotor activity in Parkinson disease (PD) and the effects of antiparkinsonian medication on the disease. We recorded SSRs to electric and auditory stimulation in 58 untreated patients with PD and in 20 healthy controls. In addition to amplitude and latency measurements, we examined the number of SSRs evoked by a single stimulus and the response adaptation after repetitive stimuli. The patients with PD subsequently were randomized for administration of levodopa/ carbidopa (n = 19), bromocriptine (n = 20), or selegiline (n = 19) as their initial treatment. The measurements were repeated after 6 months of medication and after a washout period. SSR amplitudes were significantly lower in patients with PD than in the control subjects at baseline. The amplitude reduction was more pronounced in patients with high Unified Parkinson's Disease Rating Scale scores, in those with high tremor scores, and in those with PD symptoms that had lasted more than 1 year. The levodopa/carbidopa and bromocriptine treatments did not influence SSRs, although selegiline slightly decreased the amplitude. The synchronous responses after a single stimulus were more often repetitive in the patients with PD than in the controls, although the response adaptation tendencies were similar. In conclusion, the degenerative process in PD involves the sudomotor system as reflected by the progressive suppression of SSR amplitudes with a correlation to PD symptom duration and clinical disability, whereas PD medications seems to have only minor effects. The changes in amplitude and the repetitiveness of SSRs with normal adaptation may be caused by deficits at several levels of the SSR reflex arch.


Subject(s)
Parkinson Disease/physiopathology , Skin/innervation , Sympathetic Nervous System/physiopathology , Acoustic Stimulation , Aged , Antiparkinson Agents/therapeutic use , Bromocriptine/therapeutic use , Carbidopa/therapeutic use , Electric Stimulation , Evoked Potentials , Evoked Potentials, Auditory , Female , Foot/innervation , Hand/innervation , Humans , Levodopa/therapeutic use , Male , Middle Aged , Parkinson Disease/drug therapy , Reaction Time , Reference Values , Selegiline/therapeutic use , Sympathetic Nervous System/drug effects , Sympathetic Nervous System/physiology
17.
Stroke ; 30(9): 1875-80, 1999 Sep.
Article in English | MEDLINE | ID: mdl-10471439

ABSTRACT

BACKGROUND AND PURPOSE: The prevalence of poststroke depression is known to be high, but the knowledge of its neuropsychological correlates is limited. This 12-month prospective study was designed to evaluate the natural history of poststroke depression and to study its neuropsychological, clinical, and functional associates. METHODS: We studied a series of 106 consecutive patients (46 women and 60 men, mean age 65.8 years) with acute first-ever ischemic stroke. The patients underwent a neurological, psychiatric, and neuropsychological examination at 3 and 12 months after the stroke. The psychiatric diagnosis of depression was based on DSM-III-R-criteria. RESULTS: Depression was diagnosed in 53% of the patients at 3 months and in 42% of the patients at 12 months after the stroke. The prevalence of major depression was 9% at 3 months and 16% at 12 months. There was an association between poststroke depression and cognitive impairment; the domains most likely to be defective in stroke-related depression were memory (P=0.022), nonverbal problem solving (P=0.039), and attention and psychomotor speed (P=0.020). The presence of dysphasia increased the risk of major depression. The depressive patients were more dependent in ADL and had more severe impairment and handicap than the nondepressive patients. CONCLUSIONS: More than half of the patients suffer from depression after stroke, and the frequency of major depression seems to increase during the first year. In addition to dysphasia, poststroke depression is correlated with other cognitive deficits. We emphasize the importance of psychiatric evaluation of stroke patients.


Subject(s)
Cerebrovascular Disorders/complications , Cerebrovascular Disorders/psychology , Cognition Disorders/etiology , Depression/etiology , Nervous System Diseases/etiology , Activities of Daily Living , Adult , Aged , Aged, 80 and over , Aphasia/etiology , Cerebrovascular Disorders/physiopathology , Depression/psychology , Depressive Disorder, Major/epidemiology , Female , Humans , Male , Middle Aged , Neuropsychological Tests , Prevalence , Prospective Studies
18.
Stroke ; 30(5): 1008-13, 1999 May.
Article in English | MEDLINE | ID: mdl-10229736

ABSTRACT

BACKGROUND AND PURPOSE: Traditional spectral and nonspectral methods have shown that heart rate (HR) variability is reduced after stroke. Some patients with poor outcome, however, show randomlike, complex patterns of HR behavior that traditional analysis techniques are unable to quantify. Therefore, we designed the present study to evaluate the complexity and correlation properties of HR dynamics after stroke by using new analysis methods based on nonlinear dynamics and fractals ("chaos theory"). METHODS: In addition to the traditional spectral components of HR variability, we measured instantaneous beat-to-beat variability and long-term continuous variability analyzed from Poincaré plots, fractal correlation properties, and approximate entropy of R-R interval dynamics from 24-hour ambulatory ECG recordings in 30 healthy control subjects, 31 hemispheric stroke patients, and 15 brain stem stroke patients (8 medullary, 7 pontine) in the acute phase of stroke and 6 months after stroke. RESULTS: In the acute phase, the traditional spectral components of HR variability and the long-term continuous variability from Poincaré plots were impaired (P<0.01) in patients with hemispheric and medullary brain stem stroke, but not in patients with pontine brain stem stroke, in comparison with control subjects. At 6 months after stroke, measures of HR variability in hemispheric stroke patients were still lower (P<0.05) than those of the control subjects. Various complexity and fractal measures of HR variability were similar in patients and control subjects. The conventional frequency domain measures of HR variability as well as the Poincaré measures showed strong correlations (Pearson correlation coefficient, r=0.68 to r=0.90) with each other but only weak correlations (r=0.09 to r=0.56) with the complexity and fractal measures of HR variability. CONCLUSIONS: Hemispheric and medullary brain stem infarctions seem to damage the cardiovascular autonomic regulatory system and appear as abnormalities in the magnitude of HR variability. These abnormalities can be more easily detected with the use of analysis methods of HR variability, which are based on moment statistics, than by methods based on nonlinear dynamics. Abnormal HR variability may be involved in prognostically unfavorable cardiac complications and other known manifestations of autonomic failure associated with stroke.


Subject(s)
Brain Ischemia/physiopathology , Cerebrovascular Disorders/physiopathology , Heart Rate/physiology , Acute Disease , Adult , Aged , Autonomic Nervous System/physiopathology , Cerebral Cortex/blood supply , Cerebral Cortex/physiopathology , Cerebral Infarction/physiopathology , Female , Fractals , Humans , Male , Medulla Oblongata/blood supply , Medulla Oblongata/physiopathology , Middle Aged , Pons/blood supply , Pons/physiopathology
19.
Stroke ; 30(4): 715-9, 1999 Apr.
Article in English | MEDLINE | ID: mdl-10187867

ABSTRACT

BACKGROUND AND PURPOSE: The aim of this study was to assess effects of stroke on sexual functioning of stroke patients and their spouses and to study the associations of clinical and psychosocial factors with poststroke changes in sexual functions. METHODS: One hundred ninety-two stroke patients and 94 spouses participating in stroke adjustment courses sponsored by the Finnish Stroke and Aphasia Federation completed a self-administered questionnaire concerning their prestroke and poststroke sexual functions and habits. The main outcome measures were (1) libido, (2) coital frequency, (3) sexual arousal, including erectile and orgastic ability and vaginal lubrication, and (4) sexual satisfaction. RESULTS: A majority of the stroke patients reported a marked decline in all the measured sexual functions, ie, libido, coital frequency, erectile and orgastic ability, and vaginal lubrication, as well as in their sexual satisfaction. The most important explanatory factors for these changes were the general attitude toward sexuality (odds ratio [OR] range, 7.4 to 21.9; logistic regression analysis), fear of impotence (OR, 6.1), inability to discuss sexuality (OR range, 6.8 to 18.5), unwillingness to participate in sexual activity (OR range, 3.1 to 5. 4), and the degree of functional disability (OR range, 3.2 to 5.0). The spouses also reported a significant decline in their libido, sexual activity, and sexual satisfaction as a consequence of stroke. CONCLUSIONS: Sexual dysfunction and dissatisfaction with sexual life are common in both male and female stroke patients and in their spouses. Psychological and social factors seem to exert a strong impact on sexual functioning and the quality of sexual life after stroke.


Subject(s)
Cerebrovascular Disorders/complications , Cerebrovascular Disorders/psychology , Erectile Dysfunction/etiology , Erectile Dysfunction/psychology , Spouses/psychology , Adult , Aged , Coitus , Family Health , Female , Humans , Libido , Male , Middle Aged , Orgasm , Quality of Life , Sexuality , Vaginal Diseases/etiology , Vaginal Diseases/psychology
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