Biomedical subjects

M M Steiner

Publications and source records attributed to M M Steiner.

11 recordsLinked to original sources

PubMed2003

The quality of acute stroke units on a nation-wide level: the Austrian Stroke Registry for acute stroke units.

Concepts for stroke units that cover the acute phase vary. Therefore, the network of acute stroke units that is being set up in Austria in a uniform way is of general interest. This nationwide network has been established in accordance to evidence-based recommendations and prespecified criteria for available resources. The location for such a unit follows a maximum of 90-min isochrones (transport time) to the hospital. The quality of the network is currently documented and the results are reported. A nationwide stroke registry was prospectively performed on 15 stroke units that were already functional in this network. The aim was to document the quality performance of Austrian stroke units, focusing on rapid admissions, ready availability of investigations and therapies performed. Outcome measures were Barthel scale, Rankin score and percentages of complications. Between August 1998 and December 2000, 2,313 patients with ischemic stroke or with primary intracerebral hemorrhage admitted to an Austrian stroke unit within 24 h after onset of symptoms were prospectively included. Forty-three percent of the patients had a moderate or severe stroke. Fifty-seven percent of all patients were admitted to the stroke unit within 3 h after the onset of symptoms. Twenty-seven percent of these patients were brought in by ambulance accompanied by an emergency physician. Two percent of patients were admitted by helicopter. Fifty-four percent of patients had their first brain imaging within 30 min after admission, another 26% within 3 h. Intravenous thrombolysis was performed in 4.1% of patients. The overall stroke-unit mortality was about 6.8% and mortality at 3 months was 12.9%. The outcome at 3 months showed a modified Rankin Scale score of 0 or 1 in 47% of patients, denoting none or mild impairment. This network of acute stroke units is highly efficient in terms of rapid admissions, short intrahospital delays, as well as rapid use of readily available investigations. Stroke units seem to be well accepted by the general public and the medical community because our data show that all types of strokes are treated in Austrian stroke units, including severe strokes. The total number of concurrently treated acute strokes in other institutions across Austria is not known and no formal comparison with other systems of hospitalized care was undertaken, therefore further research is necessary.

Adolescent↗

PubMed1998

Patent foramen ovale size and embolic brain imaging findings among patients with ischemic stroke.

BACKGROUND AND PURPOSE: Although the cause of stroke among patients with patent foramen ovale (PFO) may be due to paradoxical cerebral embolism (PCE), this mechanism is often difficult to prove. The aim of our study was to evaluate the association between brain imaging findings suggestive of embolism and PFO among ischemic stroke patients. METHODS: As part of the Northern Manhattan Stroke Study, 95 patients with first ischemic stroke over age 39 underwent transesophageal echocardiography (TEE) for evaluation of a cardiac source of embolism. The stroke subtype was determined by modified NINDS Stroke Data Bank criteria. Stroke subtype and MRI/CT imaging data were evaluated blind to the presence of a PFO. These findings were compared between two groups: patients with medium to large PFO (> or =2 mm) and small (<2 mm) or no PFO. RESULTS: Of the 95 patients who underwent TEE, 31 (33%) had a PFO. The frequency of PFO was significantly greater among patients with cryptogenic infarcts (19 of 42; 45%) compared with patients with determined cause of stroke (12 of 53, 23%; P=0.02). Medium to large PFOs were found more often among cryptogenic strokes than among infarcts of determined cause (26% versus 6%; P=0.04). Superficial infarcts occurred more often in the group with larger PFOs than in the group with small or no PFOs (50% versus 21%; P=0.02). Patients with medium or large PFOs more frequently had occipital and infratentorial strokes (57% versus 27%; P=0.02). CONCLUSIONS: Stroke patients with larger PFOs show more brain imaging features of embolic infarcts than those with small PFOs. Larger PFOs may be more likely to cause paradoxical embolization and may help explain the stroke mechanism among patients with no other definite cause.

Aged↗

PubMed1997

[Stroke prevention with a high risk strategy of treating hypertension in patients after a transient ischemic attack].

High-risk strategies represent important preventive measures that focus on individuals with a defined high risk of suffering a chronic disease. They are valuable in addition to measures of prevention within the general population. One example for a high-risk approach for stroke prevention is the treatment of hypertension in individuals that have previously suffered a transient ischemic attack (TIA). Data from the Klosterneuburg Stroke Data Bank and other sources enable an estimate of 2000 TIAs occurring in Austria each year, half of them being hypertensives that are mostly not treated or not sufficiently treated for their hypertension. A high-risk programme that implies forced and effective treatment of hypertension would prevent some 400 strokes or 3% of 16,000 first-ever strokes per year. Costs for preventing one stroke by means of Betablocker agents would amount to ATS 3500 and by ACE-inhibitor agents ATS 11,500, respectively. In addition to general preventive measures, such a programme would have an important impact on stroke incidence and public health.

Adrenergic beta-Antagonists↗

PubMed1978

Tetracycline photo-onycholysis.

Photo-onycholysis is a rare complication of tetracycline therapy. Its occurrence is probably greater than the few reported cases indicate. It is hoped that this case report will alert physicians to its occurrence.

Adolescent↗

PubMed1976