British journal of anaesthesia
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Arterial blood pressure is the driving force for organ perfusion. Although hypotension is common in acute care, there is a lack of accepted criteria for its definition. Most practitioners regard hypotension as undesirable even in situations that pose no immediate threat to life, but hypotension does not always lead to unfavourable outcomes based on experience and evidence. ⋯ We emphasise that hypotension does not always lead to organ hypoperfusion; to the contrary, hypotension may preserve or even increase organ perfusion depending on the relative changes in perfusion pressure and regional vascular resistance and the status of blood pressure autoregulation. Evidence from RCTs does not support the notion that a higher arterial blood pressure target always leads to improved outcomes. Management of blood pressure is not about maintaining a prespecified value, but rather involves ensuring organ perfusion without undue stress on the cardiovascular system.
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Thyroid storm is a feared complication in patients with hyperthyroidism undergoing surgery. We assessed the risk of thyroid storm for different preoperative treatment options for patients with primary hyperthyroidism undergoing surgery. ⋯ Evidence assessing the risk of perioperative thyroid storm is of insufficient quality. Given the seriousness of this complication and the impossibility of identifying patients at increased risk, preoperative treatment of these patients remains warranted.
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Thyroid storm is a feared complication in patients with hyperthyroidism undergoing surgery. We assessed the risk of thyroid storm for different preoperative treatment options for patients with primary hyperthyroidism undergoing surgery. ⋯ Evidence assessing the risk of perioperative thyroid storm is of insufficient quality. Given the seriousness of this complication and the impossibility of identifying patients at increased risk, preoperative treatment of these patients remains warranted.
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Cardiac assessment in noncardiac surgery clinical practice guidelines should be supported by the highest-quality evidence such as that offered by systematic reviews. Currently, the methodological and reporting quality of these studies remains unknown. ⋯ We found deficiencies in several key areas regarding the methodological and reporting qualities of systematic reviews included in cardiac assessment in noncardiac surgery clinical practice guidelines. As these clinical practice guidelines are instrumental to clinical decision-making and patient care in cardiac assessment in noncardiac surgery, we advocate for improved reporting quality among systematic reviews cited as supportive evidence for these recommendations.
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Meta Analysis
Convalescent plasma for COVID-19: a meta-analysis, trial sequential analysis, and meta-regression.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific antibodies, particularly those preventing interaction between the viral spike receptor-binding domain and the host angiotensin-converting enzyme 2 receptor, may prevent viral entry into host cells and disease progression. ⋯ CRD42021234201 (PROSPERO).