The effectiveness of early mobilisation on physical function in patients after heart valve surgery: a systematic review

Background/Aims Literature suggests that early mobilisation, defined as the initiation of physical activity within 48 hours following surgery, improves outcomes after cardiac surgery. This systematic review assessed the effectiveness of early mobilisation on physical function and other outcomes, including length of hospital stay and cost following heart valve surgery. Methods The Physiotherapy Evidence Database, MEDLINE, EMBASE, CINAHL and Cochrane Library were systematically searched from inception until May 2022 using relevant key words. Randomised controlled trials comparing early mobilisation and usual care for patients who had received heart valve surgery were included in the review. Methodological quality was assessed using the Physiotherapy Evidence Database scale and risk of bias using the Cochrane Risk of Bias 2 tool. The data were narratively synthesised. Results The search identified 210 articles, with 98 remaining after duplicates were removed. Upon screening for eligibility, nine articles were assessed in full and three randomised controlled trials involving 161 patients were included in the review. Early mobilisation protocols varied across trials. Two trials (n=124) reported significantly greater improvement in physical function with early mobilisation compared to usual care, including handgrip strength (P=0.001). One study (n=41) found early mobilisation significantly reduced the length of hospital stay (P=0.000), in-hospital care costs (P=0.000) and intensive care unit stay (P=0.000) compared to usual care. Methodological quality scores ranged from six to nine on the Physiotherapy Evidence Database scale. The risk of biased judgement was ‘low’ in one study and ‘some concerns’ in two studies. Conclusions Early mobilisation may improve physical function and reduce hospital and intensive care unit stays after heart valve surgery. However, differences in protocols and limited studies indicate further high-quality research is needed, particularly regarding cost-effectiveness. Establishing clear early mobilisation protocols could enhance recovery in this population. Implications for practice Early mobilisation may require the coordinated effort of a multidisciplinary team of physiotherapists, nurses and possibly other medical professionals. For its seamless and effective implementation, it is essential to understand whether this intervention falls under the domain of physiotherapists or requires broader team collaboration. Given these complexities, strategies targeting early mobilisation that balance both safety and resource considerations are advised to improve physical function after heart valve surgery, especially among patients who are frail.