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F Haas

Publications and source records attributed to F Haas.

103 records · Page 6Linked to original sources
PubMedDate not supplied

Effect on coronary artery flow reserve and resistance in the remote area after acute coronary artery occlusion in the pig model.

BACKGROUND: It has been reported that vasodilator function in remote myocardial regions supplied by "angiographically normal" coronary arteries is impaired in patients after acute myocardial infarction (MI). The aim of this study was to determine whether coronary artery flow reserve and coronary artery resistance in remote, nonischemic areas are also altered in experimental MI. METHODS: Experiments were performed in anesthetized pigs. In group 1 infarction was induced by ligation of the left-anterior descending artery (LAD); group 2 consisted of sham-operated animals. Hemodynamic parameters, coronary artery resistance, and myocardial blood flow (MBF) were measured before and 4 hours after MI under rest and during infusion of adenosine. RESULTS: Coronary artery dilation by adenosine caused a similar increase in MBF before and 4 hours after coronary artery occlusion. Resting MBF after acute MI was not altered, although a significant reduction (15%; P < .04) in mean aortic pressure was observed compared with baseline. Coronary artery resistance was significantly reduced by adenosine (P < .04) before MI, as well as at 4 hours after MI (P < .03). Coronary artery flow reserve was not adversely affected. The sham-operated animals showed similar results without any significant differences between the two study groups. CONCLUSION: This study indicates that an acute MI in pigs did not increase coronary artery resistance in the remote area after MI and therefore did not adversely affect coronary artery flow reserve in the nonischemic vascular bed. Further studies are necessary to fully understand the exact mechanism of the alterations in remote flow reserve of patients after MI.

Adenosine↗
PubMedDate not supplied

Interventions for nursing practice problems.

This study examined the effect of designated interventions in nursing practice problems on levels of burnout in nurses. A battery of tests measuring burnout, self-esteem, depression, personal accomplishment, depersonalization, and emotional exhaustion were given to nurses in experimental and control groups. Pre- and post-test data were gathered for both groups. The treatment included a 2-day conference which was designed as a respite experience to address problems specific to the nursing profession. Results indicate significantly less burnout, less frequency of depersonalization, and significantly greater frequency of personal accomplishment in the scores of the experimental group relative to the control group. This study shows that specific interventions can be used to benefit the emotional well-being of nurses by providing them with a respite opportunity and the skills to manage key stressors in their professional environment.

Burnout, Professional↗
PubMedDate not supplied

[Synovial sarcoma].

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Adolescent↗