Impact of physical and psychological factors on health-related quality of life in adult patients with liver cirrhosis: a systematic review protocol

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Abstract

Review question/objective

What is the impact of physical and psychological factors on health-related quality of life in adult patients diagnosed with liver cirrhosis?

Background

All chronic liver diseases stimulate a degree of repetitive hepatocyte injury that alters the normal liver architecture and ends in cirrhosis.1Liver cirrhosis and hepatocellular carcinoma secondary to livercirrhosis are a major public health burden, reporting increasing mortality and morbidity both in Australia and globally.2-6The four leading causes of cirrhosis include harmful alcohol consumption, viral hepatitis B and C and metabolic syndromes related to non-alcoholic fatty liver disease and obesity.7-9

Background

A cirrhotic liver is characterized by the presence of regenerative nodules surrounded by fibrous bands that inhibit the passing of molecules between blood and functional units of liver hepatocytes, leading to liver dysfunction.1,10,11Additionally, the presence of fibrous bands disrupts the normal vascular architecture, increasing resistance within the liver sinusoids and contributing to increased portal vein pressure.10,12

Background

The early stages of cirrhosis are referred to as compensated liver disease with no reported symptoms or evidence of impaired liver function.12,13However, the signs and symptoms of liver failure, as well as the mortality rate, increase as the severity of cirrhosis increases.13Transition from compensated to decompensated cirrhosis is marked by one or more physiological changes. The physiological changes include increased portal vein pressure, impaired synthetic function, electrolyte imbalance and malnourishment.13These physiological changes trigger the development of physical signs and symptoms and impact on the psychological wellbeing of the individual living with cirrhosis. The physical signs and symptoms include esophageal varices, ascites, hepatic encephalopathy, jaundice, irregular sleep patterns, muscle cramps, pruritus, fatigue, impaired mobility, breathlessness, abdominal discomfort, gastrointestinal symptoms, change of body image and pitting edema.14-17Psychological symptoms include stress, depression and anxiety.18,19

Background

Living with liver cirrhosis has a marked impact on the quality of life of the individual. Health-related quality of life (HRQOL) is the individual's perception of their physical, cognitive, emotional and social functioning.20Studies report that physical and psychological factors affect the quality of life of patients with cirrhosis which can be problematic and debilitating.18,21-28There is strong evidence which indicates that disease severity is associated with an impairment of the patient's HRQOL.15,18,22,24-26,29For example, gross ascites causes abdominal discomfort, breathlessness, increased stress and anxiety related to body image, immobility and an increased likelihood of falls. In addition, the management of ascites involves frequent invasive procedures, an increase in pill burden and implementation of dietary restrictions, all of which impact on HRQOL.26

Background

Despite the clear relationship between HRQOL and severity of disease, there has been no systematic review undertaken to determine the physical, psychological and physiological factors that affect the HRQOL of patients with liver cirrhosis. This systematic review will therefore identify the best available evidence related to the impact of physical, psychological and physiological factors on the health-related quality of life of adult patients with liver cirrhosis. The results of the review will increase clinicians' knowledge and highlight areas of clinical management that may require additional strategies and treatment plans to improve symptom relief and HRQOL.

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