In recent years, the incidence rate of gynecological tumors including cervical cancer, endometrial cancer, ovarian cancer and other malignant tumors has been rising year by year, and ranked the third in female mortality in China[1]. Surgery combined with chemotherapy is an effective treatment for gynecological tumors. Although its prognosis and survival rate have been significantly improved, it inevitably brings physical pain and psychological changes to patients. The quality of life (QOL) is often better than the survival rate in reflecting the treatment outcome of cancer patients [2]. QOL is defined as the “individual’s perception of their position in life in the context of culture and value systems in which they live and in relation to their goals, expectations, standards and concerns” [3]. QOL evaluation is an important outcome indicator of cancer research, reflecting the changes of physiological, social, psychological and emotional aspects of patients after illness [4]. The course of disease, the loss of female characteristics after surgery and the accompanying symptoms of patients with gynecological cancer, such as sexual health, fertility and sexual desire problems, seriously affect the QOL of patients [5]. In addition to surgical treatment for cancer and other physiological factors, the negative psychological factors also have a negative impact on the QOL. Cancer patients not only suffer from physical pain, but also face complex psycho-social problems, which have a negative impact on the QOL [6].
Influence of anxiety and hypertension on QOL
Among the psychological factors affecting the QOL, cancer-related anxiety is more common in the incidence of emotional disorders [7]. Sudden onset of disease or partial organ loss caused by tumor resection will affect the patients’ self-esteem and self-confidence, hence affect the patients’ self recognition, and cause severe anxiety. Previous studies have shown that the anxiety with female patients diagnosed with cancer in the preoperative, postoperative and chemotherapy period is widespread and the incidence is high [8]. The level of anxiety in female cancer patients was significantly higher than that in male cancer patients, which indicated that patients with gynecological cancer may belong to an anxious group [9, 10]. Studies have shown that the incidence of anxiety in patients with gynecological cancer is 23.7% to 42% [11,12,13]. Cancer patients have obvious psychological stress reaction or psychological disorder, especially anxiety, which will affect coping style, treatment compliance, immune function and reduce QOL [14]. A meta-analysis showed that anxiety affect 10% of cancer patients at any stage of cancer [15]. About 75% of patients with obvious anxiety did not receive any psychological or drug-related treatment systematically or never [16], leading to the obstruction of making anticancer decision, poor treatment compliance, prolonged disease recovery time, and negatively affected their QOL [17]. In cancer patients, the most common cardiovascular disease is hypertension. Previous study showed that compared with the normal population, the incidence rate of anxiety in patients who knew their blood pressure values were high [18]. Patients with hypertension may be excessively nervous due to their lack of understanding of the disease and worry about the adverse effects of anti hypertensive drug treatment, resulting in poor mood and anxiety. This psychological state in turn will aggravate the condition of hypertension, weaken the medication adherence, and cause a vicious circle between hypertension and anxiety [19]. The epidemiological investigation on hypertension and anxiety comorbidity showed that the prevalence of anxiety complicated with hypertension in China is 11.6%—38.5% [20]. A survey in Ghana found that 56.0% of hypertensive patients had anxiety [19]. Hypertension can affect the QOL of the elderly population, and has a greater impact on elderly women [21]. However, few studies have discussed the interaction effect of hypertension and anxiety on the QOL.
The moderating effect of social support
For patients with anxiety and hypertension coexisting, it is inevitable that their QOL will be affected. In order to balance the impact of stressful life events, some studies have emphasized the importance of social support on the QOL of patients with mental illness [22]. Social support refers to the spiritual or material help and support system given by the outside world, and a good social support system helps to promote mental health [23]. Huang et al. (2013) found that social support was a moderator of depression on QOL in breast cancer patients, which can significantly alleviate the impact of depression on QOL [24]. Panayiotou et al. (2013) found that social support helps the negative impact of anxiety on QOL [25]. Anyway social support directly and indirectly regulates the influence of variables to play its role, that is, the “buffer hypothesis”, which has been widely confirmed [26]. Social support is a regulatory factor between stress and health, and helps individuals cope with crisis and better adapt to changes in the environment, and the effect of social support on health can only occur during the transition period of life trajectory and sudden crisis[27]. Previous research found that social support itself had no direct impact on health, but indirectly benefited physical health by buffering social pressure and psychological pressure, while the lack of social support would aggravate the negative impact of pressure on the body [28]. To summarize, social support can improve the individual’s sense of security and self-confidence in the face of stress by providing corresponding social resources or psychological resources for individuals under stress, so as to strengthen the stress ability of individuals, reduce the erosion of stress on individuals, and thus improve individual health. Therefore, this paper chose social support as the moderating variable in gynecologic tumor patients with hypertension and anxiety.
The purposes of this study are as follows: 1) This study analyzed the effect of the interaction of anxiety and hypertension on the QOL. 2) For patients with anxiety and hypertension, it also aims to test whether the social support could moderate the impact of anxiety and hypertension on QOL, and to provide the theoretical basis for improving the QOL of patients with gynecological cancer.