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Original Articles: Gastroenterology

Psychologic Distress and Anxiety in Mothers of Children With Gastroesophageal Reflux Undergoing Antireflux Surgery

Kvello, Morten∗,†; Åvitsland, Tone Lise; Knatten, Charlotte K.§; Fyhn, Thomas J.; Malt, Ulrik; Emblem, Ragnhild∗,†; Bjørnland, Kristin∗,†

Author Information
Journal of Pediatric Gastroenterology and Nutrition: June 2019 - Volume 68 - Issue 6 - p 818-823
doi: 10.1097/MPG.0000000000002286

Abstract

What Is Known

  • Antireflux surgery is effective in treating gastroesophageal reflux disease in children.
  • Chronic childhood disease may influence maternal psychosocial functioning.

What Is New

  • Mothers of children with gastroesophageal reflux disease have high levels of psychological distress and anxiety.
  • Psychological distress and anxiety in mothers decreased 12 months after antireflux surgery.

High levels of parenting stress and distress have been found in parents of children with various chronic diseases (1). For instance, parents of children with congenital heart disease are at risk for psychological distress, anxiety, and depression (2), and similar findings are reported in parents of children with cancer, anorectal malformations, and Hirschsprung disease (3,4). There are also data suggesting that gastroesophageal reflux disease (GERD) in a child may affect parental well-being. A recent study showed significantly higher levels of anxiety and depression in mothers of children with medically treated GERD than in mothers of healthy children (5). Furthermore, a qualitative study of parents of children with GERD reported parental feelings of fear, worry, grief, and depression (6).

In most pediatric patients, GERD can be successfully managed with conservative and/or pharmacological treatment. In rare cases where symptoms are not effectively relieved, antireflux surgery may be an option (7). Most studies evaluating results after antireflux surgery have focused on complications, length of hospital stay, symptom improvement, and recurrence of GERD (8–10). The effects of antireflux surgery on parental psychological distress are unknown. Therefore, we performed this study to assess psychological distress and state and trait anxiety in mothers of children undergoing antireflux surgery, hypothesizing that scores would improve after fundoplication. Secondly, we looked for factors that could affect the mothers’ psychological distress and state anxiety.

METHODS

Study Design

This study is part of a prospective trial, where the primary outcome was to compare recurrence rates of GERD after open and laparoscopic Nissen fundoplication (11–13). Patients referred for antireflux surgery at Oslo University Hospital from 2003 to 2009 were eligible for inclusion. Inclusion criteria were age between 0 and 15 years, a diagnosis of GERD defined as troublesome symptoms and/or complications of GERD despite appropriate pharmacological antireflux therapy, and pathologic GER verified by 24-hour pH-monitoring and/or upper gastrointestinal contrast study. Exclusion criteria were comorbid conditions or previous surgery hindering laparoscopy, and parents who did not speak Norwegian. Mothers of children included in the trial were eligible for assessment of psychological distress and state and trait anxiety. There were no additional exclusion criteria for mothers.

Ethics

The Regional Committee for Medical Research Ethics approved the trial. Participants were included after giving written consent. The study is registered in clinicaltrials.gov (NCT01551134).

Preoperative Data

Child demographics recorded at admittance included age, sex, presence of a gastrostomy, and comorbidity. On the basis of comorbidity, they were classified as having neurologic impairment (NI) or not. NI was defined as a static or progressive, central or peripheral neurological condition associated with intellectual disability and/or functional impairment (14). Severe NI was defined as having 3 or more of the following criteria: cerebral palsy, mostly or exclusively tube-fed, daily epilepsy medications, and nonambulance. Non-ambulance was defined as dependency of a wheelchair or a gross motor function classification system score of 4 or 5 in those less than 4 years old (15). Symptoms of GERD and frequency of lower airway infections requiring antibiotic treatment preoperatively were recorded as dichotomous variables based on parental reports.

Surgical Technique and Follow-up Protocol

The operative procedure and immediate postoperative management followed a standardized protocol as described previously (11). Briefly, a Nissen fundoplication with hiatal repair was performed in all patients.

For the postoperative follow-up, a visit at Oslo University Hospital or the patient's local hospital was scheduled 6 months postoperatively. This included a clinical examination, as well as upper gastrointestinal contrast and 24-hour pH studies. In addition, an extensive semi-structured telephone interview was performed 1, 2, and 4 years after surgery. The parents were asked about symptoms indicating recurrent GERD, possible side effects of operation, the child's general well-being, and overall satisfaction with the operation. The phone interviewers (C.K.K. and T.J.F.) had not been involved in accepting patients for surgery or in the treatment of patients during follow-up.

Assessment of Psychological Distress and State and Trait Anxiety

To assess psychological distress in mothers of children undergoing antireflux surgery, the General Health Questionnaire 30-item version (GHQ-30), a reliable and validated instrument, was used (16). Each of the 30 items is answered on a 4-point Likert scale (0-1-2-3), resulting in a total Likert score ranging from 0 to 90. Higher scores indicate higher levels of distress. GHQ-30 includes 5 subscales: anxiety, well-being, depression, coping failure, and social dysfunction (17). Subscale scores were divided by the number of items in each subscale, giving a range from 0 to 3. Case scoring (0-0-1-1) was used to identify individuals with clinically significant distress, resulting in a total case score ranging from 0 to 30. A GHQ-30 case score ≥6 was defined as “a case”(16).

The State-Trait Anxiety Inventory Form X, a reliable and validated instrument, was used to assess state (STAI-X1) and trait (STAI-X2) anxiety (18). The 12-item version of STAI-X1 was used (19), whilst STAI-X2 consisted of 20 items. Each item is answered on a 4-point Likert scale (1-2-3-4) resulting in a total Likert score ranging from 12 to 48 for STAI-X1 and 12 to 80 for STAI-X2. Higher scores indicate increased anxiety levels.

All questionnaires were validated and in the Norwegian language, and the Norwegian version has previously been used in similar populations (20–22). According to the study protocol, GHQ-30, STAI-X1, and STAI-X2 were administered to the mothers at 3 different time points; preoperatively and 6 and 12 months after surgery. Six months postoperatively, the questionnaires were either given to the mothers during the scheduled hospital follow-up or sent by post if the postoperative follow-up was done at the patient's local hospital. All received questionnaires by post after 12 months. If questionnaires were not returned, a letter was sent to remind the mothers of the questionnaires.

Statistics

Numerical data are presented as mean and standard deviation (SD) or as median [min-max] if not fitting normal distribution. Categorical data are presented as frequencies and percentages. Analyses was performed comparing patients with NI to patients without NI, and responders to nonresponders. Age was compared using the Mann-Whitney U test as data were not normally distributed, and categorical data were compared using the chi-square test. Preoperative questionnaire scores of postoperative responders and postoperative nonresponders were compared with the independent samples T test. Questionnaires with more than 20% of items missing were excluded. In cases with less than 20% missing items, the mean score of the items filled in, replaced the missing item. A univariate linear regression analysis was performed to identify possible factors influencing preoperative GHQ-30 Likert and STAI-X1 scores. Preoperative and postoperative GHQ-30, STAI-X1, and STAI-X2 scores were normally distributed and compared using the paired samples T test, calculating mean difference and 95% confidence intervals. A P value <0.05 was considered statistically significant. All analyses were performed using IBM SPSS Statistics for Windows, Version 24.0. Armonk, NY: IBM Corp., released 2016.

RESULTS

Study Population

During the study period, 107 patients underwent a primary Nissen fundoplication. Of these, 20 were excluded or did not want to participate for various reasons (11). The remaining 87 patients were included in the prospective trial, and the mothers of these patients were asked to answer the GHQ-30, STAI-X1, and STAI-X2 questionnaires.

Of the 87 eligible mothers, 62 (71%) returned questionnaires preoperatively. GHQ-30 was missing from one of these mothers, STAI-X2 from another. Only 11 (18%) mothers returned questionnaires 6 months postoperatively, whereas 31 (50%) answered around 12 months after the operation. Due to the low response rate at 6 months, only questionnaires returned at 12 months were used in the postoperative assessment. GHQ-30 was missing from one of these mothers, STAI-X1 from another. The postoperative questionnaires were answered median 13.3 months [9.0–19.2] after the operation.

Demographics

The demographics and GERD symptoms in the children of the 62 mothers included in the preoperative assessment are presented in Table 1. Patients with NI were more likely to have frequent vomiting, retching, and regurgitation than patients without NI. Diagnoses in NI patients included cerebral palsy (n = 1), various syndromes (n = 6), malformations of the central nervous system (n = 6), and others (n = 6). Of the NI patients, 55% (n = 16) had severe NI and 45% (n = 13) mild NI. In non-NI patients, 88% (n = 29) had no other diagnoses than GERD, 6% (n = 2) had esophageal atresia, 3% (n = 1) had severe kidney disease, and 3% (n = 1) had hydrocephalus without NI.

TABLE 1
TABLE 1:
Demographics and symptoms of gastroesophageal reflux in children undergoing Nissen fundoplication (n = 62)

Preoperative Assessment

Preoperative scores of psychological distress and state and trait anxiety are shown in Table 2. Subscale scores of GHQ-30 showed lower scores in depression compared with other subscales. On the basis of GHQ-30 case scores, 54% (33/61) of the mothers had a score that indicated clinically significant psychological distress. In a univariate linear regression analysis, neither age of the child, GERD symptoms nor comorbidity influenced the preoperative GHQ-30 or STAI-X1 scores (Supplemental Table 1, Supplemental Digital Content, https://links.lww.com/MPG/B582). Mothers of patients with mild NI had higher GHQ-30 and STAI-X1 scores than mothers of patients with severe NI (GHQ-30: 41.0 vs 29.4, P = 0.035, STAI-X1: 27.0 vs 21.1, P = 0.038).

TABLE 2
TABLE 2:
Preoperative psychological distress (GHQ-30) and state (STAI-X1) and trait (STAI-X2) anxiety of mothers of children with gastroesophageal reflux disease undergoing Nissen fundoplication

Postoperative Assessment

All mothers, both responders (n = 31) and nonresponders (n = 27, missing = 4) reported 12 months postoperatively that their expectations of the fundoplication were fulfilled. Ninety-seven percent (n = 30) and 96% (n = 26) of responders and nonresponders, respectively, reported that their child's well-being had improved after the fundoplication.

There were no significant differences between the children of responders and nonresponders regarding the patients’ age, comorbidity, preoperative GERD symptoms, clinical outcomes, or postoperative recurrence of GERD (Table 3). Furthermore, there was no difference in preoperative mean GHQ-30, STAI-X1, or STAI-X2 scores between postoperative responders and nonresponders (GHQ-30: 35.3 vs 36.2, P = 0.82, STAI-X1: 23.0 vs 25.3, P = 0.22, STAI-X2: 39.3 vs 41.8, P = 0.35).

TABLE 3
TABLE 3:
Comparison of demographics, preoperative data, and clinical outcomes in children of mothers who did and did not take part in the postoperative assessment

The GHQ-30 total and subscales scores, as well as STAI-X1 and STAI-X2 scores of the 31 mothers included in the postoperative assessment are presented in Table 4. There was a statistically significant decrease in both total GHQ-30 Likert score and in subscales measuring anxiety, well-being, and coping failure when comparing pre- and postoperative scores. Furthermore, there was also a statistically significant decrease in STAI-X1 scores when comparing postoperative and preoperative scores. No significant change was found for STAI-X2 scores.

TABLE 4
TABLE 4:
Psychological distress (GHQ-30) and state (STAI-X1) and trait (STAI-X2) anxiety in mothers of children before and after Nissen fundoplication

On the basis of postoperative GHQ-30 case-scores, 20% (n = 6) of the mothers had scores suggestive of clinically significant psychological distress. Four of these mothers also had preoperative scores suggestive of clinically significant psychological distress. Of these 6 mothers, 3 had children with NI, 2 had children with no other disease than GERD, and 1 had a child with esophageal atresia.

Many parents reported spontaneously during the semi-structured follow-up interviews that domains related to the gastrointestinal system had improved postoperatively. For instance, parents frequently mentioned the relief of no longer having to change the child‘s clothes several times a day because of vomiting. Other common comments were that they were less stressed during feeds because they no longer were worried that the child would vomit most of the meal.

DISCUSSION

The present study demonstrates that mothers of children referred for antireflux surgery have high levels of psychological distress and state anxiety when standardized and validated questionnaires are applied. Importantly, these scores decreased significantly after antireflux surgery, indicating that antireflux surgery may be beneficial not only for the child but also for the mothers as well. This study is the first to examine the effects of fundoplication on psychological distress and state anxiety in a population of mothers of children undergoing antireflux surgery.

The children in this study underwent antireflux surgery because conservative and medical treatment did not efficiently relieve troublesome GERD symptoms. Qualitative studies in parents of children with GERD report that the child's disease causes stress and impaired sleep, as well as worry and frustration (23). In addition, the families’ social life and well-being may be influenced, as well as the parents’ ability to have a full-time job (6). A case-control study investigating emotional well-being in mothers of medically treated non-NI children, found higher levels of depression and anxiety compared with mothers of healthy children (5). In line with this, we found elevated levels of both psychological distress and state anxiety in mothers of children referred for fundoplication. Notably, over 50% of the mothers had scores suggesting clinically significant psychological distress. The mothers in this study had higher scores of psychological distress than mothers of children undergoing gastrostomy placement (mean GHQ-30 Likert score 35.8 vs 29.8) (22), and the scores are comparable to those of parents of children with severe meningococcal disease and cancer (24,25). Subscale analysis of the GHQ-30 scores showed increased anxiety, well-being and coping failure scores, and lower scores for depression. This implies that on a group level, the increased scores in mothers were likely to be a sign of stress from the child's disease, rather than severe psychiatric illness. This assumption is supported by findings of levels of trait anxiety within the normal range (18).

Twelve months after the Nissen fundoplication, we found a significant decrease in both psychological distress and state anxiety in the mothers. In line with these results, the patients experienced relief of GERD symptoms, and parents were satisfied with the result of the fundoplication (12,13). It seems that relief of the child's GERD symptoms improved maternal emotional well-being. The spontaneous comments from mothers during the semi-structured interviews postoperatively further support the positive effect of the fundoplication on the mothers. Thus, the results support our hypothesis that mothers are influenced by the children's disease, and that when GERD is efficiently treated, maternal levels of distress and state anxiety are reduced (25). In line with our findings, Engelmann et al (26) reported improvement in parent-centered domains of health-related quality of life (HRQOL) 6 months after fundoplication. Two other studies using self-designed questionnaires also reported a positive impact on parental quality of life after fundoplication (27,28). Contrasting these finding that antireflux surgery may improve parental emotional well-being, is a study from Srivastava et al (29) who found no improvement in parenting stress as measured with the Parenting Stress Index and HRQOL 1 month after surgery. The authors hypothesized that the lack of change was because of the short time interval between assessments.

Patients with NI presented with more frequent symptoms of GERD, and about half of NI patients were classified with severe NI. We did not find higher preoperative psychological distress in mothers of children with NI and GERD than in mothers of non-NI children with GERD. This finding contrasts other studies reporting that parents of NI children have impaired emotional well-being compared with parents of non-NI children (30,31). There are several explanations for these contrasting observations. Established coping mechanisms in parents of NI children may explain the lack of difference between these 2 groups of parents (32). As all these children had so severe GERD symptoms that surgery was considered necessary, it is possible that the mothers’ concern for GERD outweighed that of NI. Furthermore, we did not find that mothers of those with severe NI scored higher than mothers of children with mild NI. This supports the finding that GERD was a significant stressor for these mothers.

A major advantage of this study was the use of standardized and validated questionnaires, as well as the prospective and longitudinal study design. Furthermore, the clinical status of the children was very well documented and can be related to results from the questionnaires on maternal psychological distress and state anxiety. As we only included children with objectively verified GERD and unsatisfactory effect of medical treatment, results from this study may be generalizable to other pediatric GERD populations referred for antireflux surgery.

There are, however, several limitations of this study. The first set of questionnaires assessing psychological distress and state and trait anxiety was answered during the hospital stay when the operation was performed, and hospitalization and surgery may have served as a stressor for the parents (33). Another limitation is that a significant number of participants did not return postoperative questionnaires. Low response rates represent a risk for nonresponse bias. The drop-out analysis, however, showed no significant difference in either demographics, pre- and postoperative GERD symptoms or parental satisfaction between responders or nonresponders. Furthermore, the preoperative psychological distress and state anxiety scores in the mothers were similar. Thus, it is reasonable to assume that the conclusions would not be different if more mothers had returned the questionnaires. Another disadvantage of the study design is that possible confounding factors, such as mothers’ sociodemographic status, major life events (eg, divorce, disease), or changes in the child's underlying condition were not assessed. Such information would have strengthened the study. Lastly, a few patients got a gastrostomy inserted concomitantly with the fundoplication. As gastrostomy placement has been shown to improve maternal psychological distress, some of the effect contributed to the fundoplication, may have been caused by the gastrostomy (22).

CONCLUSIONS

To conclude, we have shown that mothers of children referred for antireflux surgery have high levels of psychological distress and state anxiety before the operation. Secondly, we found that successful antireflux surgery improved maternal psychological distress and state anxiety. Even though improvement of maternal psychosocial functioning should not be an indication for antireflux surgery in a child, it is an important outcome measure of the surgical treatment.

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Keywords:

gastroesophageal reflux; gastroesophageal reflux disease; maternal psychosocial functioning; pediatric surgery; prospective trial

Supplemental Digital Content

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