Health benefits of companion animals in relation to the physiologic indices of relaxation.
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Human-Animal Bond↗
Biomedical subjects
M M Baun
Publications and source records attributed to M M Baun.
Effectiveness of oxygen concentrations of less than 100% before and after endotracheal suction in patients with chronic obstructive pulmonary disease.
This within-subject study compared the effects of hyperinflations with 20% above maintenance oxygen (O2) level and 100% O2 hyperinflations before and after endotracheal suction in 11 acutely ill patients with chronic obstructive pulmonary disease. Four hyperinflations were delivered at 1.5 times the calculated tidal volume (10 ml/kg) with 100% O2 or 20% above maintenance O2 level via resuscitator bag, followed by 10 seconds of continuous endotracheal suctioning. This sequence was repeated three times. No statistically significant differences (p less than 0.05) were found between the two protocols for arterial oxygen saturation, blood pressure, or heart rate (analysis of variance for repeated measures). There was no change in heart rhythm for any of the subjects. The results of this study suggest that hyperinflation with 20% above maintenance O2 level can be used for oxygenation in patients with chronic obstructive pulmonary disease before and after endotracheal suctioning. Replication is needed before clinical implementation.
Aged↗
Doctoral preparation of qualified nurse researchers.
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Education, Nursing, Graduate↗
The effect of hyperinflation, inspiratory hold, and oxygenation on cardiopulmonary status during suctioning in a lung-injured model.
This study determined the effects of a 5-second inspiratory hold during ventilatory maneuvers on cardiopulmonary status before, during, and after endotracheal suctioning in an acute lung-injured model. Eight mongrel dogs were anesthetized, paralyzed, mechanically ventilated, and given intravenous oleic acid to produce pulmonary edema. Four protocols were tested in alternate order in which either tidal volume inflations or hyperinflations at an FiO2 of 0.6 were given with and without an inspiratory hold of 5 seconds before and after each of three sequential suctioning passes. In those protocols in which an inspiratory hold was used, statistically significant changes occurred in right atrial, pulmonary arterial, and aortic systolic and diastolic pressures (p less than 0.04). The use of an inspiratory hold with hyperinflation maintained PaO2 during suctioning (range of 81 to 91 mm Hg), but had the greatest decrease in PaO2 (8%) after return to the ventilator. In all protocols, with the exception of the one in which hyperinflations without an inspiratory hold were used, there was a cumulative increase in PaCO2 with tidal volume inflation protocols reaching peak PaCO2 values of 49 (+/- 7.5) mm Hg. In protocol 4 in which hyperinflation without inspiratory hold was used, PaO2 ranged from 75 (+/- 16) to 92 (+/- 34) mm Hg, and PaCO2 ranged from 37 (+/- 7) to 42 (+/- 6) mm Hg. In conclusion, the use of hyperinflation without an inspiratory hold resulted in the least undesirable changes in the variables studied. However, this protocol needs to be replicated in an acutely ill clinical population before recommended for practice.
Animals↗