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Biomedical subjects

Pierre Pfitzenmeyer

Publications and source records attributed to Pierre Pfitzenmeyer.

At least 19 recordsLinked to original sources
PubMed2006

A new formula for correction of total calcium level into ionized serum calcium values in very elderly hospitalized patients.

Ionized calcium (Ca(2+)) seems to be the best measure of active serum calcium but, in France, numerous laboratories do not have Ca(2+) analyzers so that numerous clinicians use Payne's formula to obtain adjusted calcium (Ca(Ad)) values. In frail very elderly patients with protein/energetic malnutrition and very low concentrations of albumin, "correction" with Payne's formula usually gives false hypercalcemic results, so that hypocalcemia may be seriously underdiagnosed. Two hundred and ninety-four patients of 80 years and older with serum albumin level < 35 g/l were included in four French hospitals for elderly people. Biological measurements were standardized in order to determine Ca(2+) and total calcium (Ca(T)) in accordance with approved guidelines. Ca(Ad) was calculated with Payne's formula whereas the dependence of Ca(2+) with serum protein, albumin and Ca(Ad) was investigated by linear regression, the goodness-of-fit of each equation with the measure of Ca(2+) being studied. Taking into account serum protein and albumin levels, multiple linear regression gave the equation: Ca(2+) (mmol/l)=0.188-0.00469 protein (g/l)+0.0110 albumin (g/l)+0.401 Ca(Ad) with r(2)=0.442. The relative difference between the measure and the value given by the equation did not depend upon the center, and the correlation between measured and computed values of Ca(2+) was better, for any group, with our formula than with Payne's formula. When Ca(2+) was expressed with Ca(T) instead of Ca(Ad), albumin term was no longer significant and the new equation was: Ca(2+) (mmol/l)=0.592-0.00449 protein (g/l)+0.410 total calcium (mmol/l) with r(2)=0.438. We propose an alternative to direct measurement of Ca(2+) with a simple formula usable in geriatric units, which are often deprived of high-performance equipment.

Aged, 80 and over↗
PubMed2006

Multidisciplinary management in geriatric day-hospital is beneficial for elderly fallers: a prospective study of 28 cases.

We determined whether management including medical, psychological, and physiotherapeutic approaches, over a period of 6 weeks, has a beneficial effect on motor abilities, psychological status, and independence of elderly fallers with psychomotor disadaptation syndrome (PDS). We included 28 subjects (mean age 81.4 years). They were assessed from a medical, motor, and psychological point of view at both the inclusion and the end of the multidisciplinary intervention. A follow-up was conducted with multidisciplinary assessment at 6 and 9 months after the beginning of the study in order to evaluate duration of benefits of the management. The statistical analysis concerned only subjects who took part in the total multidisciplinary program, i.e., 14 subjects. The multidisciplinary intervention had an overall positive impact on motor abilities as shown by the increase in the mini-motor test scores, the rate of success in rising from the floor and decrease of time for the dual task. This study also showed a reduction in the fear of falling and a decrease in the rate of fallers. This positive effect on motor abilities, fear of falling and rate of fallers was sustained until 9 months after the beginning of the multidisciplinary management. This study shows the importance of a multidisciplinary management of elderly fallers with PDS.

Accidental Falls↗
PubMed2006

Impact of cognitive task on the posture of elderly subjects with Alzheimer's disease compared to healthy elderly subjects.

The aims of this study were to analyze the effects of cognitive task on static posture in Alzheimer's disease (AD) and in healthy elderly (HE) subjects and to evaluate whether those effects were greater in AD subjects than in HE subjects. We performed a posturographic analysis on 13 subjects with mild AD (mean age, 79.7+/-5.1 years, Mini-Mental State Examination scores between 18 and 23) and on 17 HE subjects (mean age, 78.5+/-4.4 years). After watching a video sequence, the subjects were asked to maintain a stable upright posture while standing on a force platform. Then, the postural sway was measured during the following two conditions: (1) quiet standing and (2) both standing and answering questions about the video sequence. We were interested in the center of pressure (CoP) area and path. For each group, the single task was compared to the dual task for the CoP area and path. We also compared the variability of both CoP area (variation of the CoP area between the single and the dual task) and path (variation of the CoP path between the single and the dual task) between the two groups. We showed that there was no significant difference between the single and the dual task in HE subjects concerning the CoP area and path, in contrast to the AD group, and that variability of both the CoP area and path were significantly greater in the AD subjects than in the HE subjects. This finding may contribute to the risk of falls in AD patients.

Accidental Falls↗
PubMed2005

Energy cost and cardiorespiratory adaptation in the "Get-Up-and-Go" test in frail elderly women with postural abnormalities and in controls.

BACKGROUND: This study investigated the hypothesis that postural abnormalities might increase energy expenditure during a clinical functional test in frail elderly persons. METHODS: Two groups of hospitalized women (aged 73 to 100 years) were recruited. Women who showed postural and gait abnormalities as described in the psychomotor disadaptation syndrome (PDS) were compared with control participants. The authors measured energy expenditure during the timed "up and go" test. For each participant, oxygen uptake, carbon dioxide output, expiratory minute ventilation, breathing frequency, heart rate, and alveolar ventilation were recorded 10 minutes before, during, and 10 minutes after exercise. The arterial pressure of carbon dioxide was estimated from expired gases. RESULTS: The mean oxygen uptake values were significantly higher in women with PDS than in the control group during exercise and recovery periods (4.89 +/- 1.68 vs 3.75 +/- 1.25 ml . kg(-1) . min(-1) and 4.69 +/- 1.45 vs 3.76 +/- 0.97 ml . kg(-1) . min(-1), respectively [p <.05]). Expiratory minute ventilation was always higher in women with PDS than in controls regardless of the period of the test (p <.05), and alveolar ventilation was higher in women with PDS only during the exercise period (p <.05). The estimated arterial pressure of carbon dioxide did not change significantly between the different phases of the test but was always lower (p <.05) in women with PDS compared with the control group. CONCLUSIONS: The significant increase in oxygen uptake during the exercise and recovery periods in women with PDS compared with controls suggests that postural abnormalities that characterize PDS may be associated with an increase in energy expenditure. In clinical practice, the low capacity to tolerate even moderate exercise must be considered when specific rehabilitation programs are offered to women with PDS.

Adaptation, Physiological↗
PubMed2005

[Specificity of stroke in the elderly: clinical characteristics and impact on care].

Stroke in the elderly differs from stroke in younger adults in several points. It represents the most frequent consequence of atherothrombotic disease associated with hypertension, diabetes and hypercholesterolemia. It is also the main complication of cardiac arrhythmia. From a clinical point of view, epileptic seizure is frequently observed at the onset, and prognosis is darkened by a high risk of dementia occurrence (20%). Management of stroke in acute phase requires intensive care, which has been shown to decrease mortality and handicap by 20% in Stroke Units. Fibrinolysis with rt-PA can be carried out till 80 years. Primary and secondary prevention are still very efficacious in old patients and decrease not only the risk of stroke, but also the risk of dementia. Moreover, influenzae vaccination has been shown to decrease the risk of stroke in the following year in subjects over 65 years.

Acute Disease↗
PubMed2004

Intravascular malignant lymphomatosis diagnosed on a muscular biopsy: a case report.

Intravascular malignant lymphomatosis (IML) is characterized by proliferation of malignant lymphoid B cells within the lumens of small vessels. Common symptoms include general weakness and central neurological and cutaneous signs. Only histopathological analysis can confirm the diagnosis. We report on a 69-year-old man hospitalized for general weakness, inflammatory syndrome, and hemophagocytic syndrome (HS). Our observation shows that histopathological signs may be observed on a muscular biopsy without clinical or biological signs of muscular involvement.

Journal Article↗
PubMed2004

Psychomotor disadaptation syndrome. A new clinical entity in geriatric patients.

Psychomotor Disadaptation Syndrome (PDS) is characterized by backward disequilibrium in a sitting and standing position, reactional hypertonia, an alteration of postural reactions, gait modifications, and fear of falling. PDS may be the result of a loss of postural reserves, reaching a frailty threshold that does not allow subjects to maintain an adequate functional level. This clinical picture may be associated with frontal-subcortical dysfunction in which microangiopathy could play a key role. PDS may be triggered by numerous factors, such as cardiovascular and metabolic diseases, falls, and bed rest. In addition to medical and neurological evaluations, a specific rehabilitation program is one of the most important aspects of the management of patients showing PDS.

Aged↗
PubMed2003

[Ogilvie syndrome in the elderly: retrospective study of 40 cases].

OBJECTIVE: To assess, in a population of elderly patients, the circumstances clinical and progressive characteristics and form of management of an acute colonic pseudo-obstruction (ACPO). METHOD: Retrospective study of the files of 40 patients aged 70 and more having presented an acute colonic pseudo-obstruction and hospitalised in the university hospital in Dijon from January 1995 to June 2000. RESULTS: The population was composed of 24 men (60%) and 16 women (40%) with a mean age of 80.8 years. The reasons for hospitalisation were varied: only 15 patients had been referred for an occlusive syndrome. 39 patients presented with abdominal distension, 30 suffered from abdominal pain. In this population, 17 patients exhibited reduced or clearly limited mobility, 20 patients had altered cognitive capacity with an MMS < 20. Thirty-eight patients suffered from a progressive heart disease and 8 patients presented with advanced dementia. The usual treatment of these patients to help the intestinal transit included diuretics in 25 cases and agents slowing the transit in 19 cases. Biologically speaking, hypokalaemia was observed in 21 cases and increased thyroid stimulating hormone (TSH) in 3 cases. An image was obtained of the abdomen without preparation in all patients: the mean caecum diameter was of 9.8 cm. A colon aspiration was performed in 20 patients and molecules to improve peristaltism were administered in 21 cases, with neostigmine prescribed for 9 patients. Surgery was required for 7 patients and 3 of them subsequently died. In terms of progression, 20 patients were cured after treatment, 13 relapsed and 7 patients worsened. Unfortunately, 10 patients died in our series. DISCUSSION: In our study, the clinical profiles of acute colonic pseudo-obstruction were similar to those described in the literature: they occurred in varying circumstances, in medical or surgical settings ina predominantly male population of elderly, heavily dependent,patients. Treatment of this affection is not clearly codified for fragile patients with multiple diseases and the mortality rate observed should stimulate further studies, notably on pharmacological level.

Acute Disease↗
PubMed2003

[Admission to intensive care of very old patients].

UNLABELLED: THE EXTENT OF THE PROBLEM: Because of the costs of intensive care, there is a possibility that access to this sector may be limited for those above a certain age. It would therefore appear necessary to develop an ethical clinical strategy in order to assess as precisely as possible and on individual level, the benefits and risks of these techniques, since age itself is simply a criterion among so many others. Among the elements that are important for the decision is the respect of the patient's wish, when it can be obtained since this is a fundamental point. In studies conducted in the United States, 50 to 90% of the elderly persons interviewed did not wish to be resuscitated in the case of cardiac arrest. CRITERIA FOR ADMISSION: The decision to admit an elderly patient in an intensive care unit must take into account the functional state of the patient, appreciated on daily activity and mobility scores and the neuro-psychological assessment, before hospitalization. In parallel, the severity of the underlying disease and the impact on visceral failures, assessed by the severity scores on admission appear to be more reliable prognostic elements than the patients' age itself. FOLLOWING RESUSCITATION: The quality of life of elderly patients within the months following resuscitation is difficult to assess, but is considered as acceptable in the majority of surviving patients. IN PRACTICE: The choice of admission in intensive care of an elderly patient requires a multidisciplinary approach that takes into account the patient's and/or family's wishes, the benefit/risk ratio of the technical act but which also, in certain cases, bears in mind the principle of end of life and the patient's dignity.

Activities of Daily Living↗
PubMed2003

[An overview on palliative care and the end of life. Results of a survey conducted in a sample of the French population].

OBJECTIVE: To have an overview of the French population concerning palliative care. METHOD: French opinion poll, based on a questionnaire submitted to 302 persons recruited at random in the street, in several regions of France. It included questions concerning the representation of pain, the sick body, death, the end of life and palliative care. RESULTS: Regarding the management of pain, the majority of persons surveyed (59.6%) felt that the general practitioner was the appropriate referent to treat pain. The population's experience with regard to the death of a close relative revealed that death had occurred in hospital in 58.3% of cases. Nevertheless, the majority (57%) of the population wished to die in their own home. The concept of palliative care centres is increasing in the public's mind, but remains vague in its practical aspects for 60.9% of the population surveyed. For 29.5% of the population surveyed, information and training of health professionals in palliative care was considered as a priority. CONCLUSION: The end of life and death is a source of fear for most of the population. This motivates a transfer towards the medical corps for the professional and technical management of this period of life, and the health professionals must be prepared to respond appropriately to this specific demand.

Adolescent↗
PubMed2002

Cardiovascular characteristics and cerebral CT findings in elderly subjects with psychomotor disadaptation syndrome.

BACKGROUND AND AIMS: In previous studies, we described a clinical picture typically observed in frail old people, called "Psychomotor Disadaptation Syndrome" (PDS), but we have never studied etiopathogenic data. The aim of this study was to complete the clinical picture, record cardiovascular risk factors and provide cerebral CT scan findings in patients with PDS. METHODS: 73 patients with PDS were recruited in the Geriatric Medicine departments of the University Hospitals of Dijon (Burgundy, France) and Strasbourg (Alsace, France); this group included prospectively all hospitalized patients showing postural and gait abnormalities according to the following criteria: trend towards backward falling and gait pattern alteration characterized by hesitancy in initiation, small steps, and increase in the double support durations. General characteristics, neurological and cardiovascular information were collected for each patient. For the detection of white matter changes (WMC), we used a third-generation CT scanner (GE CT HSA) evaluating a section of 7 mm at each interval of 8 mm. RESULTS: Neurological examination showed that "reactional hypertonia" was observed in more than 90% of the patients, and that no patient showed normal reactive postural responses. Prior history of hypertension was noted in 49% of the patients, while a current antihypertensive treatment was taken by 13% of the patients. Orthostatic hypotension was observed in 44% of patients. Severe or moderate periventricular lucencies on CT scan were found in 67% of the patients, and severe ventricular enlargement in 50.5% of the patients. CONCLUSIONS: We advance that PDS might be associated with WMC, and that hypotension might be an important etiologic factor of WMC in causing reduction of the cerebral blood flow in subcortical areas.

Aged↗
PubMedDate not supplied

Mini motor test: a clinical test for rehabilitation of patients showing psychomotor disadaptation syndrome (PDS).

Direct observation of postural and motor abilities appears as very important in assessment of patients showing psychomotor disadaptation syndrome (PDS). We examine feasibility and reliability of mini motor test (MMT) which has been developed in order to establish rehabilitation goals in this population. MMT is a 20-item score which assesses abilities in bed, quality of sitting position, abilities in the standing position, and quality of gait. MMT has been conducted by two different independent investigators, a physiotherapist and a physician, in four different geriatric centers. One hundred and one subjects (mean age: 84.9 +/- 6.0 years) were included in the study. The agreement between the two investigators was highly satisfying for both MMT total score and each item of MMT. Redundancy between items appeared very limited. The difference between investigators for MMT total score did not vary significantly with score of the mini-mental-state examination (MMSE). The correlation between MMT and the Katz index was found significantly negative. MMT is an easy direct-observation test which may be particularly useful in patients who present with severe postural and gait impairment. This test can be used in clinical practice by different professional actors in order to allow an interdisciplinary approach for a common rehabilitation goal in the PDS patients.

Aged↗
PubMedDate not supplied

Vasculitis in the very elderly.

BACKGROUND: Whatever may be their clinical presentation, vasculitis syndromes (VS) have a bad prognosis in the very elderly. OBJECTIVE: The aim of this work was to study VS particularities in very old people. Most published studies on VS in elderly people concern patients older than 60 years; studies concerning very old patients are unusual. METHODS: We studied retrospectively subjects older than 75 years with a diagnosis of VS from the Departments of Geriatrics and Internal Medicine at Dijon University Hospital. These subjects were hospitalized between January 1995 and December 1999. Data were obtained from the medical files of these patients. Several aspects were considered: type of VS, associated diseases, treatment, complications, and outcome. RESULTS: Twelve patients, 5 men and 7 women aged 79-91 (mean age 82.3) years, were included. Primary VS was observed in half of the patients and secondary VS in the others. The initial clinical presentation was often polymorphous and unspecific; 8 of the patients died, 2 developed progressive severe functional impairment, 1 was stabilized under therapy, and 1 patient with VS secondary to infection recovered. Most patients either died quickly or progressively deteriorated from infections, malnutrition, or functional impairment. CONCLUSION: The health of the majority of patients (83%) deteriorated dramatically, leading to death or severe functional impairment.

Aged↗
PubMedDate not supplied

Falls and depression in older people.

BACKGROUND: Depression is one of the most common risk factors for falls, but links between falls and depression are still unclear. Few studies have examined the relationship between depression and gait alteration, which may increase the risk of fall. OBJECTIVE: This study aims to assess a possible relationship between depression, postural and gait abnormalities, and falls. METHODS: We conducted a 1-year prospective study on patients >/=70 years who were admitted to a geriatric unit for 'spontaneous' unexplained falls. Patients were tested for depression using the 30-item Geriatric Depression Scale (GDS). Their motor performances were assessed using the Mini Motor Test (MMT), which is an easy direct-observation test, validated in France, for assessment of frail old people who present with severe postural and gait impairment. This scale is composed of 4 categories of items: (1) abilities in bed; (2) quality of the sitting position; (3) abilities in the standing position, and (4) quality of gait. RESULTS: Sixty-nine patients were included. Depression was found in 46 patients (66.7%). The MMT score was higher in the non-depressed fallers (NDF) group (GDS </=10) compared to the depressed fallers (DF) group (GDS>10; p < 0.05). The 2 groups were compared for each of the 4 items of the MMT: the difference between the DF and NDF groups was mainly explained by the impairment of postural abilities in the standing position. CONCLUSIONS: Our results support the idea that depression is associated with postural abnormalities in the standing position, which may predispose to falls. In clinical practice, more attention should be given to old fallers concerning diagnosis and treatment of associated depression.

Accidental Falls↗
PubMedDate not supplied

A 4-year follow-up of very old patients presenting with frontal-subcortical dysfunction compared with Alzheimer's disease patients.

BACKGROUND: Frontal-subcortical clinical syndrome (FSCS) is frequently described in elderly patients and consists of specific alterations in cognition and motor functions. This clinical picture may be associated with a high level of dependence and a high mortality risk. OBJECTIVE: We report the risks of institutionalization and death during a follow-up of 4 years in patients showing FSCS. METHODS: The study was initiated in 1998 to compare FSCS patients showing postural and gait abnormalities with Alzheimer's disease (AD) patients. Follow-up was conducted by means of telephone interviews with the patient's general practitioner over a 4-year period (1998-2002). RESULTS: Both institutionalization and mortality rates were significantly higher (p < 0.05) in the FSCS group compared to the AD group. CONCLUSIONS: The high risk of disability and death in FSCS patients suggests that they might require specific care programs that include stimulation in daily living activities in order to reduce the risk of institutionalization and to improve quality of life.

Aged↗