Patterns of Anxiety in Critically Ill Patients Receiving Mechanical Ventilatory Support

School of Nursing, University of Minnesota, Minneapolis, MN 55455, USA.
Nursing research (Impact Factor: 1.36). 05/2011; 60(3 Suppl):S50-7. DOI: 10.1097/NNR.0b013e318216009c
Source: PubMed


Mechanical ventilation is one of the most frequently used technological treatments in critical care units and induces great anxiety in patients.
Although mechanical ventilation and critical illness induce great anxiety and distress in hospitalized patients, little is known about anxiety ratings over the course of ventilatory support. Knowledge of anxiety ratings over time is needed to implement effective symptom management interventions. The purposes of this study were to describe anxiety ratings for a subgroup of mechanically ventilated patients over the duration of enrollment in a multisite clinical trial, to discern any pattern of change in anxiety ratings, to determine if anxiety decreases over time, and to explore the influence of sedative exposure on anxiety ratings.
Participants were 57 mechanically ventilated patients who were randomly assigned to the usual care group of a randomized controlled trial designed to assess the efficacy of music interventions on anxiety of mechanically ventilated patients in intensive care units. Anxiety ratings were obtained at study entry and daily for up to 30 days. A 100-mm visual analog scale was used to measure anxiety. Visual Analog Scale-Anxiety scores were plotted as a function of study time in days for each participant to discern possible patterns of change. A mixed-models analysis was performed to assess the nature and magnitude of change over time (slope) using 251 observations on 57 patients.
Results of the unconditional means model indicated that further modeling was appropriate. An autoregressive covariance structure with a random component for participant was chosen as the most appropriate covariance structure for modeling. An unconditional growth model indicated that the Visual Analog Scale-Anxiety ratings declined slowly over time: -.53 points per day (p = .09).
Anxiety is an individual patient experience that requires ongoing management with appropriate assessment and intervention over the duration of mechanical ventilatory support.

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Available from: Kay Savik, May 26, 2015
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    • "Pain and anxiety, as well as delirium, are very important factors in the management of provisions for physical and psychological comfort of patients admitted to the intensive care unit (ICU) [1]. Recently, various aspects of critical care, such as the physical and emotional distress of ICU patients, have become targets of critical care research [2] [3] [4]. According to previous studies, distress from pain and anxiety in the ICU is closely linked to delayed physical recovery as well as the patient's psychological quality of life [5] [6]. "
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    ABSTRACT: Little is known about the relationship between anxiety and pain in intensive care unit (ICU) patients despite its importance. The aims of the present study are to examine the correlation between pain and anxiety during ICU care and to investigate its effects on the dose of opioids and anxiolytics administered. The study subjects were awake critically ill patients admitted to an ICU over a 2-month period. Trained psychiatrists evaluated the nondelirious, noncomatose patients daily for anxiety and pain using the Numeric Rating Scale for Pain (NRS-Pain), Faces Anxiety Scale (FAS), and Hamilton Anxiety Rating Scale. Daily alterations of anxiety and pain were significantly correlated with one another among 123 patients. Both the FAS and the Hamilton Anxiety Rating Scale were positively correlated with the NRS-Pain (P < .001 for both). The NRS-Pain score (P = .016) and the FAS score (P = .007) both significantly correlated with the dose of anxiolytics. The dose of opioids was unaffected by the severity of pain or anxiety. Pain and anxiety among critically ill patients in the ICU were closely correlated. Pain and anxiety influenced the dose of anxiolytics administered. Therefore, a precise evaluation and comprehensive approach to the management of pain and anxiety are important for treating ICU patients. Copyright © 2015. Published by Elsevier Inc.
    Journal of Critical Care 06/2015; 30(5). DOI:10.1016/j.jcrc.2015.05.025 · 2.00 Impact Factor
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    ABSTRACT: Critical care areas are fast moving, often chaotic, and therefore confusing, even frightening, to patients attempting to understand what has happened to them. The nurse acts to mitigate these reactions by understanding the range of possibilities that can occur with patients, including potential psychiatric issues, and serving as patient advocate to ensure that appropriate treatment is initiated. Certainly there may be other psychiatric problems not described in the preceding text. The main possibilities are covered in this article. Assessing and acting early are tools the critical care nurse uses to meet patient needs and prevent behavioral problems that can interfere with life-preserving care.
    Critical care nursing clinics of North America 03/2012; 24(1):53-80. DOI:10.1016/j.ccell.2012.01.001 · 0.49 Impact Factor
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    ABSTRACT: Background In order to measure anxiety in physically and cognitively debilitated patients, such as patients receiving invasive mechanical ventilation, the use of reliable and valid instruments is recommended; however, these instruments should be short. Objective To analyze the reliability and validity of a short version of the state subscale from the Spielberger State-Trait Anxiety Inventory, developed by Chlan and colleagues and translated into Spanish (STAI-E6), in patients receiving invasive mechanical ventilation. Methods An instrumental study was conducted of 80 patients receiving invasive mechanical ventilation in the intensive care unit at the Hospital of Alicante (Spain). The patients completed the 6-item STAI-E6 scale. Before the patients completed the scale, the interviewers indicated their impression of each patient's level of anxiety by using a linear scale. Internal consistency, construct validity, and convergent validity of the scale were analyzed. Results The scale did not present a floor/ceiling effect, the Cronbach α was 0.79, and the single-factor structure of the original scale was maintained. Scores on the scale correlated positively with the subjective assessment of the health professional. Significant differences were found only between anxiety level and duration of intubation. Conclusions The 6-item version of the state subscale from the STAI-E6 shows satisfactory reliability and validity for Spanish patients receiving invasive mechanical ventilation.
    American Journal of Critical Care 01/2013; 22(1):46-52. DOI:10.4037/ajcc2013282 · 2.12 Impact Factor
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