Heartburn and regurgitation have different impacts on life quality of patients with gastroesophageal reflux disease

Abstract

AIM: To investigate the impact of heartburn and regurgitation on the quality of life among patients with gastroesophageal reflux disease (GERD).

METHODS: Data from patients with GERD, who were diagnosed according to the Montreal definition, were collected between January 2009 and July 2010. The enrolled patients were assigned to a heartburn or a regurgitation group, and further assigned to an erosive esophagitis (EE) or a non-erosive reflux disease (NERD) subgroup, depending on the predominant symptoms and endoscopic findings, respectively. The general demographic data, the scores of the modified Chinese version of the GERDQ and the Short-form 36 (SF-36) questionnaire scores of these groups of patients were compared.

RESULTS: About 108 patients were classified in the heartburn group and 124 in the regurgitation group. The basic characteristics of the two groups were similar, except for male predominance in the regurgitation group. Patients in the heartburn group had more sleep interruptions (22.3% daily vs 4.8% daily, P = 0.021), more eating or drinking problems (27.8% daily vs 9.7% daily, P = 0.008), more work interferences (11.2% daily vs none, P = 0.011), and lower SF-36 scores (57.68 vs 64.69, P = 0.042), than patients in the regurgitation group did. Individuals with NERD in the regurgitation group had more impaired daily activities than those with EE did.

CONCLUSION: GERD patients with heartburn or regurgitation predominant had similar demographics, but those with heartburn predominant had more severely impaired daily activities and lower general health scores. The NERD cases had more severely impaired daily activity and lower scores than the EE ones did.

Key Words: Erosive esophagitis; Gastroesophageal reflux disease; Gender; Life quality; Non-erosive reflux disease

Core tip: The study was aimed to investigate the impact of heartburn and regurgitation on the quality of life among patients with gastroesophageal reflux disease (GERD). The results found GERD patients with heartburn predominant had more severely impaired daily activities and lower general health scores than those with regurgitation predominant. Non-erosive reflux disease greatly impaired daily function in regurgitation-predominant patients, but did not have such impact in those with heartburn predominant.

INTRODUCTION

Gastroesophageal reflux disease (GERD) is a common disorder of the upper gastrointestinal tract that is typically characterized by heartburn and acid regurgitation. According to the Montreal definition, GERD is a condition which develops when the reflux of stomach contents causes troublesome symptoms and/or complications[1]. GERD has an impact on the daily lives of affected individuals, interfering with physical activity, impairing social functioning, disturbing sleep and reducing productivity at work[2-5]. According to the Genval guidelines, a negative impact on the quality of life is a criterion for reflux disease in patients with frequent heartburn[6]. GERD patients can be classified as having either erosive esophagitis (EE) or non-erosive reflux disorder (NERD) depending on endoscopic findings[7]. The aim of this study was to investigate the impact of two cardinal GERD symptoms, heartburn and regurgitation, on the quality of life of patients with EE and those with NERD.

MATERIALS AND METHODS

Data from consecutive adult patients with GERD in our hospital, Taichung Veterans General Hospital, who were diagnosed according to the Montreal definition, were prospectively collected from January 2009 to July 2010. Exclusion criteria were as follows: (1) GERD combined with other structural gastrointestinal disorders, such as peptic ulcer disease, esophageal or gastric malignancy; (2) prior gastric surgery; (3) use of chronic anti-acid medication, such as proton pump inhibitors (PPIs) or H2-receptor antagonists (H2RAs), for more than 2 mo prior to enrollment; and (4) pregnancy. This study was conducted with the approval of the Clinical Research Ethics Committee of Taichung Veterans General Hospital.

The general data of enrolled patients, including age, gender, body weight, body mass index (BMI), symptom duration and lifestyle habits, were recorded. All patients underwent an open-access transoral upper gastrointestinal endoscopy, and the findings of esophagocardiac mucosal break, esophagocardiac junction (ECJ) ulcer, hiatal hernia or Helicobacter pylori (H. pylori) infection of each case were collected. All patients were asked to complete the questionnaires, including the modified Chinese version of GERDQ, the modified GERD impact scale, and the Short-form 36 (SF-36) questionnaire (Chinese version).

The modified Chinese version of GERDQ included questions about the severity of the symptoms of heartburn (“a burning feeling behind the breastbone”) and regurgitation (“unpleasant movement of material upwards from the stomach”). Answers were graded on a three-point Likert scale, as follows: mild was defined as symptoms that can be easily ignored; moderate, awareness of symptoms but easily tolerated; and advanced symptoms sufficient to cause an interference with normal activities. The enrolled patients were classified as having heartburn, defined as more severe symptoms of heartburn than regurgitation, and the regurgitation group, defined as more severe symptoms of regurgitation than heartburn.

The modified GERD impact scale measures the frequency of imparied daily activity, including sleep interruption, eating or drinking problems, and work interferences, graded on a three-point Likert scale, as follows: never, sometimes and daily. The SF-36 questionnaire measures generic quality of life, which allows comparisons between different disease states. It also measures health status in eight domains: physical functioning, role limitations-physical, bodily pain, general health, vitality, social functioning, role limitations-emotional, and mental health. Two summary scores were also calculated from subject responses: the physical health (PH) score and the mental health (MH) score. Scores on the SF-36 range from 0 to 100 in each dimension and on the summary scales, with higher scores indicating better quality of life.

Data are expressed as standard derivation of the mean for each of the measured parameters. Gender, hiatal hernia, H. pylori, ECJ ulcer, endoscopic findings and lifestyle habits, are expressed as a percentage of the total patient number. A P value below 0.05 was considered statistically significant. Statistical analyses were made using Pearson’s χ² test to compare the effects of gender, hiatal hernia, lifestyle habits and GERD impact scale scores; ANOVA test was used to analyze age, body weight, BMI, and scores of the SF-36 questionnaires.

RESULTS

A total of 290 consecutive patients were enrolled, and 58 cases had similar severity of symptoms of heartburn and regurgitation. Among the remaining 232 patients, 108 (46.6%) were classified in the heartburn group and 124 (53.4%) were classified in the regurgitation group. The symptom severities were similar in these two groups, as shown in Table 1.

Table 1 Severity distribution of patients in the heartburn and regurgitation group n (%).

Groups	Severity			Total
	Mild	Moderate	Severe
Heartburn group	4 (3.7)	85 (78.7)	19 (17.6)	108
Regurgitation group	6 (4.8)	102 (82.3)	16 (12.9)	124

The characteristics of the heartburn group and regurgitation group are presented in Table 2. The heartburn group had more males than the regurgitation group did (57.4% vs 38.7%, P = 0.044). Other general data, including age, body weight and BMI, were similar between the two groups. There were no significant differences in endoscopic findings, such as NERD/EE ratio, ECJ ulcer, hiatal hernia, H. pylori infection rate, or lifestyle habits, such as tea, alcohol, coffee consumption, and cigarette smoking.

Table 2 Basic characteristic of the of patients in the heartburn and regurgitation group.

Characteristics		Heartburn group (n = 108, 46.6%)		Regurgitation group (n = 124, 53.4%)		P value
		n (%)	mean ± SD	n (%)	mean ± SD
Mean age (yr)			48.72 ± 13.97		44.92 ± 15.30	0.1301
Gender	M	62 (57.4)		48 (38.7)		0.0442
	F	46 (42.6)		76 (61.3)
Weight (kg)			62.30 ± 13.56		63.33 ± 11.85	0.8341
BMI (kg/m2)			22.97 ± 3.87		23.38 ± 3.42	0.8251
H. pylori		28 (25.9)		22 (17.7)		0.2852
Hiatal hernia		30 (27.8)		34 (27.4)		0.9662
ECJ ulcer		8 (7.4)		12 (9.7)		0.6642
Endoscopic finding	NERE	54 (50.0)		56 (45.2)		0.8362
	EE	54 (50.0)		68 (54.8)
Life style	Coffee	70 (64.8)		76 (61.3)		0.6952
	Alcohol	44 (40.7)		48 (38.7)		0.8232
	Tea	84 (77.8)		104 (83.9)		0.4042
	Smoke	20 (18.5)		16 (12.9)		0.4052

¹t test;

²Pearson’s χ² test. BMI: Body mass index; ECJ: Esophagocardiac junction; EE: Erosive esophagitis; F: Female; M: Male; NERD: Non-erosive reflux disease; H. pylori: Helicobacter pylori.

The results of the modified GERD impact scale and the SF-36 questionnaire scores of the two groups are displayed in Figures 1 and 2, respectively. The heartburn group had significantly more sleep interruptions (22.3% daily vs 4.8% daily, P = 0.021), more eating or drinking problems (27.8% daily vs 9.7% daily, P = 0.008), and more work interferences (11.2% daily vs none, P = 0.011), than the regurgitation group did. Similarly, according to the results of the SF-36 questionnaire, the heartburn group had lower scores than the regurgitation group did, including total scores (57.68 vs 64.69, P = 0.042), PH scores (58.53 vs 63.52, P = 0.126), and MH scores (53.04 vs 59.31, P = 0.071).

Figure 1 Results of the modified gastroesophageal reflux disease impact scale of patients in the heartburn and regurgitation groups. H: Heartburn group; R: Regurgitation group.

Figure 2 Results of the SF-36 questionnaire of patients in the heartburn and regurgitation groups. SF-36: Short-form 36; PH: Physical health; MH: Mental health.

There were 54 (50%) NERD patients and 54 (50%) EE patients in the heartburn group, and 56 (45.2%) NERD cases and 68 (54.8%) EE cases in the regurgitation group, respectively. The two main groups, the heartburn group and the regurgitation group, were further divided into four subgroups: NERD with heartburn, EE with heartburn, NERD with regurgitation and EE with regurgitation, depending on individual endoscopic findings.

The basic characteristics of the NERD and EE patients in the heartburn group and regurgitation group are shown in Table 3. Male predominance in the EE with heartburn subgroup (74.1%) and female predominance in the NERD with regurgitation subgroup (71.4%) were noted. More severe obesity, including higher body weight and BMI, were found in EE patients than in NERD cases in both subgroups, particularly in the EE with heartburn subgroup (mean body weight, 68 vs 56.59, P = 0.001; mean BMI, 24.24 vs 21.68, P = 0.014). ECJ ulcers were found in the EE with heartburn subgroup (14.8%) and the EE with regurgitation subgroup (17.6%). In the EE with heartburn subgroup, there were more cases of hiatal hernia than in the NERD with heartburn subgroup (40.7% vs 14.8%, P = 0.033), but the difference was not significant in the NERD with regurgitation subgroup. The ratio of H. pylori infection was similar among all 4 subgroups.

Table 3 Basic characteristic of the of non-erosive reflux disease and erosive esophagitis patients in the heartburn and regurgitation group.

Characteristics		Heartburn group				P value	Regurgitation group				P value
		NERD (n = 54, 50%)		EE (n = 54, 50%)			NERD (n = 56, 45.2%)		EE (n = 68, 54.8%)
		n (%)	mean ± SD	n (%)	mean ± SD		n (%)	mean ± SD	n (%)	mean ± SD
Mean age (yr)			46.89 ± 14.75		50.56 ± 13.15	0.3401		39.64 ± 10.23		48.21 ± 19.77	0.0431
Gender	M	22 (40.7)		40 (74.1)		0.0132	16 (28.6)		32 (47.1)		0.1372
	F	32 (59.3)		14 (25.9)			40 (71.4)		36 (52.9)
Weight (kg)			56.59 ± 10.07		68.00 ± 14.34	0.0011		60.28 ± 8.71		64.85 ± 13.67	0.1311
BMI (kg/m2)			21.68 ± 3.43		24.24 ± 3.92	0.0141		22.59 ± 2.90		23.52 ± 3.65	0.2931
H. pylori		14 (25.9)		14 (25.9)		1.0002	8 (14.3)		14 (20.6)		0.5182
Hiatal hernia		8 (14.8)		22 (40.7)		0.0332	16 (28.6)		18 (26.5)		0.8542
ECJ ulcer		0		8 (14.8)		0.0503	0		12 (17.6)		0.0283

¹t test;

²Pearson’s χ² test;

³Fisher exact test. BMI: Body mass index; ECJ: Esophagocardiac junction; EE: Erosive esophagitis; F: Female; M: Male; NERD: Non-erosive reflux disease; H. pylori: Helicobacter pylori.

The results of the modified GERD impact scale of these four subgroups are shown in Figure 3. The NERD and EE with heartburn subgroups had a similar presentation of daily activities. However, the NERD with regurgitation subgroup had a significantly higher ratio of impaired daily activity than the EE with regurgitation subgroup did, in particular, eating or drinking problems (11.8% daily vs 7.1% daily, P = 0.002), and work interferences (50% “sometimes”vs 26.5% “sometimes”, P = 0.046).

Figure 3 Results of the modified gastroesophageal reflux disease impact scale of non-erosive reflux disease and erosive esophagitis patients in the heartburn and regurgitation groups. EE: Erosive esophagitis; NERD: Non-erosive reflux disease; GERD: Gastroesophageal reflux disease.

The SF-36 questionnaire scores of these four subgroups are listed in Figure 4. In general, the NERD patients had lower scores, both in the physical and mental dimensions, than the EE cases did, but the difference was not significant. The EE with regurgitation subgroup had the highest scores (mean total score 65.68, PH score 63.76, MH score 60.62), and the NERD with heartburn subgroup had the worst scores (mean total score 57.52, PH score 58, MH score 52.88).

Figure 4 Results of the short-form 36 questionnaireof non-erosive reflux disease and erosive esophagitis patients in the heartburn and regurgitation groups. EE: Erosive esophagitis; NERD: Non-erosive reflux disease; SF-36: Short-form 36; PH: Physical health; MH: Mental health.

DISCUSSION

GERD is a chronic disease that tends to relapse and cause complications. Typical symptoms associated with GERD include heartburn, acid regurgitation, and chest pain, as well as extraesophageal manifestations such as nausea, chronic cough, asthma, and hoarseness. Previous studies indicated that the risk factors in patients with GERD include age[4], obesity[5,8], hiatal hernia[9], and an unhealthy lifestyle, including alcohol consumption and cigarette smoking. The two typical presentations of GERD are heartburn and regurgitation. Heartburn is usually characterized as a burning substernal or epigastric discomfort which radiates towards the mouth, and regurgitation refers to reflux of food or bitter-tasting gastric contents from the stomach into the mouth. Though these two symptoms are often paired, they are different conditions, and sometimes one can affect a patient without the occurrence of the other.

Patients with GERD may present with a broad range of troublesome symptoms that can affect the quality of their daily lives[2-5]. The negative effects of GERD are dependent on the frequency and severity of symptoms rather than the presence of esophagitis. Studies conducted in Sweden’s general population, which assessed the impact of the severity and frequency of GERD symptoms, showed that even symptoms rated as mild are associated with a clinically meaningful reduction in well-being[10]. One large European multicenter observational study noted more than half of GERD cases had sleep disturbance, and persistent regurgitation was associated with more hours of work missed[11]. Other two previous studies documented increasing symptom frequency of heartburn that led to significant decreases in well-being[12,13].

Our study disclosed that patients with heartburn predominant had more severely impaired daily activity, including sleep interruption, eating or drinking problems and work interferences, than those with regurgitation predominant. Furthermore, the individuals with heartburn predominant also had lower SF-36 health scores. These results implied that there might be a difference in the presentation of symptoms and quality of life of GERD patients.

Furthermore, recent analyses of clinical trial data suggest regurgitation is less responsive to acid suppression than heartburn, and may be a common cause of incomplete treatment response[14,15]. To investigate the physicopathological presentations of heartburn and regurgitation, one study monitored 32 patients with symptoms suggesting GERD using 24-h ambulatory pH and impedance. The results showed that reflux episodes inducing regurgitation had a higher proximal extent of liquid component, but less esophageal pH drop, than episodes inducing heartburn[16].

Although patients with GERD have a broad range of troublesome symptoms that can adversely affect the quality of life, studies have shown that individuals with EE and NERD have similar total quality of life scores[17,18]. In our study, patients with EE and those with NERD had similar general quality of life scores, both in the heartburn subgroup and the regurgitation subgroup. However, the NERD patients with regurgitation predominant had more significantly impaired daily functions, including eating or drinking problems and work interferences, than the EE cases did. The results implied that NERD regurgitation predominance has a more negative impact on life quality than EE regurgitation predominance, but there were no differences in the heartburn-predominant cases.

There are some limitations in our study. Firstly, co-morbid diseases that tend to influence the severity of GERD, such as chronic heart failure or chronic obstructive pulmonary disease, were not considered, and this might have led to inaccurate outcomes. Secondly, the endoscopic findings were recorded by individual endoscopists, and inter-observer conflict and misclassification might have occurred. Thirdly, gender predominant was found in some subgroups, and that might influence the finial results. Fourthly, not all of our cases with NERD have accepted pH-metry monitoring, and it might lead to a misclassification of the individuals with functional heartburn as NERD. Fively, the lifestyle characteristics in our study only reflect the patients’ current status. Lastly, our study was hospital-based designed. Further research using representative samples of the general population are needed to confirm these results.

In conclusion, in the present study, GERD patients with heartburn and regurgitation predominant had similar demographics, but heartburn predominance had a more negative impact on daily activity and general health scores. In general, the NERD cases had more severely impaired daily activity and lower scores than the EE ones did.

COMMENTS

Background

Gastroesophageal reflux disease (GERD) is typically characterized by heartburn and acid regurgitation. GERD has an impact on the daily lives of affected individuals, interfering with physical activity, impairing social functioning and reducing productivity at work.

Research frontiers

The aim of this study was to investigate the impact of two cardinal GERD symptoms, heartburn and regurgitation, on the quality of life of patients with GERD.

Innovations and breakthroughs

Patients in the heartburn group had more sleep interruptions, more eating or drinking problems, more work interferences, and lower SF-36 scores than patients in the regurgitation group did. Non-erosive reflux disease greatly impaired daily function in regurgitation-predominant cases, but did not have such impact in those with heartburn predominant.

Applications

GERD patients with heartburn predominant had a more negative impact on daily activity and general health scores than those with regurgitation predominant.

Terminology

This is an interesting original manuscript assessing the impact of heartburn and regurgitation on quality of life in GERD patients.

Peer review

This is an interesting original manuscript assessing the impact of heartburn and regurgitation on quality of life in GERD patients.