Key result
The Neuman Systems Model significantly reduced anxiety in patients undergoing CABG surgery compared to control immediately after the intervention (p=.008) and at discharge (p=.007).
Why the study?
Anxiety is a significant psychological problem associated with CABG surgery that may reduce treatment outcomes, but the effect of applying the Neuman Systems Model was unknown.
Does the Neuman Systems Model reduce anxiety in patients undergoing coronary artery bypass graft surgery?
RCT (n=70)
Single-blind
randomly assigned
No
Does the Neuman Systems Model reduce anxiety in patients undergoing coronary artery bypass graft surgery?
p-value: p=.008
The Neuman Systems Model is an effective intervention to reduce anxiety in patients undergoing CABG surgery.
May reduce perioperative anxiety in CABG patients; leaves open broader efficacy and implementation in diverse settings.
BACKGROUND: Coronary artery bypass graft (CABG) surgery is the most commonly used surgical procedure for patients with coronary artery disease. Anxiety is a significant psychological problem associated with CABG surgery that may reduce related treatment outcomes. PURPOSE: This study was designed to investigate the effect on anxiety of applying the Neuman Systems Model in patients awaiting and undergoing CABG surgery. METHODS: A single-blind, parallel-group randomized controlled trial was conducted on patients scheduled to receive coronary artery bypass surgery in an urban area of Iran. Seventy participants were enrolled using a convenience sampling method and randomly assigned to either the intervention group (n = 35) or the control group (n = 35). Participants in the intervention group received intervention in accordance with the Neuman Systems Model format, including meetings held at three levels of prevention. Patients' anxiety was measured using the State Anxiety Inventory before the intervention, immediately after the intervention, and at discharge time. The chi-square test, Fisher's exact test, independent sample t test, one-way repeated measures analysis of variance test, and Fisher's least significant difference were used to analyze the data. RESULTS: No significant difference was found between the mean anxiety scores of the two groups before the intervention (p = .48, t = 0.71). However, the mean anxiety score of the intervention group was significantly lower than that of the control group immediately after the intervention (p = .008, t = 2.73) and at discharge time (p = .007, t = 2.77). CONCLUSIONS: The Neuman-based program is an effective and low-cost intervention that may be applied to reduce anxiety in patients awaiting and undergoing CABG surgery. This program may be a good guide in providing healthcare services.
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Akhlaghi et al. (2021) conducted an RCT in Coronary artery disease requiring CABG surgery (n=70). Neuman Systems Model vs. Control was evaluated on Anxiety measured using the State Anxiety Inventory immediately after the intervention and at discharge (p=.008). The Neuman Systems Model significantly reduced anxiety in patients undergoing CABG surgery compared to control immediately after the intervention (p=.008) and at discharge (p=.007).
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