What is the purpose of an underwater seal for a thoracotomy tube?

a. to maintain a pressure consistent with pressure inside the lung itself
b. to prevent the negative pressure within the pleural space from pulling more air in through the chest tube
c. to reduce the pressure within the pleural space
d. to reduce the surface tension of the pleura


B
Medical-surgical management involves insertion of a chest tube to drain air and fluid from the pleural space using a closed chest drainage system. The underwater seal for a thoracotomy tube prevents the negative pressure within the pleural space from pulling more air in through the chest tube.

Nursing

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Analyzing heterogeneity in meta-analysis can be visually attained with which of the following?

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After completion of the assessment, the nurse notes the clients has a score of 18. Based upon your understanding, what is the best interpretation of this finding? A) This client is at a low risk for the development of a pressure ulcer. B) This client is at a high risk for the development of a pressure ulcer. C) This client's score is inconclusive and does not reflect a significant risk for the development of a pressure ulcer. D) The client's score is inconclusive, indicating the need for a repeated assessment using the Braden Scale within the next 3 days.

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In terms of the literature review, how are quantitative research and ethnographic research similar?

a. Both require the researcher to review the literature before beginning the study. b. Both require the researcher to review the literature after completion of data analysis. c. Both require the researcher to utilize the literature as the primary data source. d. Both consider the literature review extraneous, postponing it until after the study is published.

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