PubMed Health⌕ Search

Biomedical subjects

I Welk

Publications and source records attributed to I Welk.

4 recordsLinked to original sources
PubMed2002

The superiority of TIMI frame count in detecting coronary flow changes after coronary stenting compared to TIMI Flow Classification.

AIMS: We compared the qualitative Thombolysis in Myocardial Infarction (TIMI) Flow Classification with a new quantitative method, the TIMI Frame Count, to investigate the differences of both systems in detecting coronary flow changes after stent implantation. METHODS: TIMI flow grades and corrected TIMI frame counts (CTFC) were determined in 102 patients before, after stent implantation and at 6-month angiography. Analysis of the CTFC in patients with TIMI flow grades 3 and 2 demonstrated that for CTFC values lower than 30 frames, all patients had TIMI flow grade 3, while for CTFC values greater than 69 frames no patient had TIMI grade 3 flow. For CTFC values between 30 and 69 frames, TIMI grades 3 and 2 flow overlap. Comparing changes in TIMI flow grades and the CTFC before and after stent implantation (after stent implantation and at 6 month angiography), CTFC detects flow changes in 46% (40%) of the patients, which were not detected with TIMI Flow Classification. CONCLUSION: The TIMI Flow Classification grading system is not able to separate clearly between completely perfused and partially perfused coronary artery vessels. The quantitative TIMI Frame Count method is superior to the qualitative TIMI Flow Classification in detecting coronary flow changes.

Adult↗
PubMed1983

[Resuscitation injuries].

This investigation is based on 140 autopsy protocols of unsuccessful resuscitation procedures (Resuscitation Center of the Army Hospital, Hamburg); injections and closed-chest cardiac massage had been performed in every case. - Most of the patients had collapsed because of cardiac shock; patients with thoracic or abdominal injury were excluded from this study. In individual cases only, the following severe complications originated from the resuscitation procedures: fracture of a chest vertebra, serial fractures of ribs resulting in an unstable thorax, bilateral haemothorax, tension pneumothorax, rupture of kidney and of spleen (but not of liver). In one case the lesions caused by the resuscitation measures must be considered as responsible for the lethal outcome. Fractures of ribs and/or sternum were found in 45.9% of all cases, the frequency increasing with age. The number of fractured ribs ranged up to 16, mainly 3-8 ribs were fractured. Fractures of rib No. 1 and 8-12 were very rare. The fractures were located between the parasternal and axillary lines.--In a comparative study the site of rib fractures after heavy blunt thoracic injuries was preferably found in the dorsal region.

Adult↗