Obstructive Sleep Apnea and Colorectal Cancer: A Systematic Review and Meta-Analysis.

BACKGROUND: Obstructive sleep apnea (OSA), characterised by recurrent episodes of upper airway collapse, intermittent hypoxia (IH) and sleep fragmentation (SF), has been associated with carcinogenesis in pre-clinical models. The relationship between OSA and colorectal cancer (CRC) in clinical studies is controversial. AIM: The objective of this meta-analysis was to assess the association between OSA and CRC. METHODS: Two independent investigators searched studies indexed in CINAHL, MEDLINE, EMBASE, the Cochrane Database and clinicaltrials.gov that were randomised controlled trials (RCT) or observational studies evaluating the relationship between OSA and CRC. Studies were included if they had available odds ratios (OR) and relative risks (RR) or if hazard ratios (HR) with 95% confidence intervals (CI) were available and a reference group composed of participants who did not have OSA. OR and 95% CI were calculated using a random-effect, generic inverse variance method. RESULTS: We included four observational studies out of 85 records, comprising a combined cohort of 5,651,662 identified patients in the data analysis. Three studies used polysomnography to identify OSA. The pooled OR of CRC in patients with OSA was 1.49 (95% CI, 0.75 to 2.97). The statistical heterogeneity was high with I2 of 95%. CONCLUSIONS: Our study is unable to conclusively point towards OSA being a risk factor in the development of CRC, despite the plausible biological mechanisms for this. Further well-designed prospective RCT assessing the risk of CRC in patients with OSA and the impact of OSA treatments on the incidence and prognosis of CRC are needed.

New lung cancer diagnosis after emergency department presentation in a tertiary hospital: patient characteristics and outcomes.

OBJECTIVES: Currently, there are limited data available about patients who are diagnosed with lung cancer following an emergency department (ED) visit. This study sought to define the demographics, symptoms profile, staging, and prognosis of this cohort of patients. METHODS: We conducted a retrospective study of patients diagnosed with a primary lung malignancy at a lung cancer multidisciplinary meeting between January 2018 and January 2020. Medical records were reviewed to collect data around demographics, presenting symptoms, investigations, admission, cancer stage, and mortality. RESULTS: During the study period, 890 patients were diagnosed with a primary lung malignancy of which 209 (23.5%) presented to ED prompting diagnostic work-up. Of these 209 patients, 89% were hospitalized for a median duration of 6 days. Also, 104 (50%) were female and the average age of the cohort was 70 years. Dyspnea (38%) was the most common presenting symptom. Radiological staging and tissue biopsy were performed as an outpatient procedure in 46% and 41% of patients, respectively. A total of 188 patients had non-small cell lung cancer of whom 68% had ztage IV disease. A total of 53 (25%) patients died within 3 months of ED presentation. These patients were older with more advanced disease compared to patients who were alive at 3 months. CONCLUSION: Emergent diagnosed patients are a significant proportion of the lung cancer population, presenting with advanced stage disease and increased short-term mortality. Future research should be directed at interventions, such as lung cancer screening program and/or community education, to reduce the need for patients to present to the ED with disabling lung cancer symptoms.

"I Wasn't Gonna Let It Stop Me": Exploring Women's Experiences of Getting Through Chemotherapy for Ovarian Cancer.

BACKGROUND: Many women with ovarian cancer experience significant chemotherapy-related adverse effects during treatment and thus cannot complete it without dose reductions and/or delays. There is some indication that chemotherapy completion is associated with improved survival, although currently little is known about what helps women get through chemotherapy. OBJECTIVE: The aim of this study was to explore women's accounts of the factors they believed were helpful during their ovarian cancer treatment. METHODS: Using a qualitative approach within a critical realist framework, we conducted interviews with 18 women who had received chemotherapy for ovarian cancer and analyzed the data thematically. RESULTS: We identified 3 main themes related to women's experiences of dealing with chemotherapy: "optimistic tenacity," which illustrates a specific stoic identity that women assumed during treatment; "self-care," which reflects the health behaviors and activities women engaged in and lifestyle adjustments they made; and "support systems," which emphasizes the importance of social, emotional, and medical support and the specific needs shared by women undergoing treatment for ovarian cancer. CONCLUSIONS: Our findings contribute to a deeper understanding of women's unique experiences of treatment that may influence whether they complete chemotherapy for ovarian cancer. IMPLICATIONS FOR PRACTICE: This study highlights the central role of women's optimistic determination within a wider self-caring and well-supported context of treatment; we aim to provide feedback and guidance to health professionals caring for women with ovarian cancer.