Summary
Pre‐operative anxiety is common and often significant. Ambulatory surgery challenges our pre‐operative goal of an anxiety‐free patient by requiring people to be ‘street ready’ within a brief period of time after surgery. Recently, it has been demonstrated that music can be used successfully to relieve patient anxiety before operations, and that audio embedded with tones that create binaural beats within the brain of the listener decreases subjective levels of anxiety in patients with chronic anxiety states. We measured anxiety with the State‐Trait Anxiety Inventory questionnaire and compared binaural beat audio (Binaural Group) with an identical soundtrack but without these added tones (Audio Group) and with a third group who received no specific intervention (No Intervention Group). Mean [95% confidence intervals] decreases in anxiety scores were 26.3%[19–33%] in the Binaural Group (p = 0.001 vs. Audio Group, p < 0.0001 vs. No Intervention Group), 11.1%[6–16%] in the Audio Group (p = 0.15 vs. No Intervention Group) and 3.8%[0–7%] in the No Intervention Group. Binaural beat audio has the potential to decrease acute pre‐operative anxiety significantly.
We investigated whether positioning patients undergoing general anaesthesia for cholecystectomy in a 20°head-up position, as opposed to supine, improved the efficacy of 3 min of standard pre-oxygenation via a circle breathing system. Following pre-oxygenation, patients received a standard induction of anaesthesia and the apnoea time (from administration of rocuronium to the arterial oxygen saturation to fall to 95%) was recorded. Mean (95% CI) apnoea time was 386 (343-429) s in the 20°head-up position (n = 17) vs 283 (243-322) s in the supine position (n = 18; p = 0.002). Pre-oxygenation is significantly more efficacious and by inference more efficient in the 20°head-up position than in the supine position.
Vitamin K antagonists (VKAs) such as warfarin have traditionally been the major therapeutic option for anticoagulation in clinical practice. VKAs are effective and extensively recommended for the prevention of venous and arterial thromboembolism in cardiovascular disease. Despite its effectiveness, warfarin is limited by factors such as a narrow therapeutic index, drug-drug interactions, food interactions, slow onset and offset of action, hemorrhage, and routine anticoagulation monitoring to maintain therapeutic international normalized ratio. During the last 2 decades, the approval of anticoagulants, such as low-molecular-weight heparins, indirect factor Xa inhibitors (eg, fondaparinux), and direct thrombin inhibitors (eg, argatroban, lepirudin, and desirudin), have expanded the number of available antithrombotic compounds with additional targets within the anticoagulation pathway. Although these medications offer several potential therapeutic advantages, they all require parenteral or subcutaneous administration and are substantially more expensive than VKAs. Thus, VKAs, despite several limitations, have remained the major option for most patients requiring chronic anticoagulation. These limitations have prompted interest in the development of newer oral anticoagulants. Novel anticoagulants targeting inhibition of factor Xa and thrombin (factor IIa) have now been incorporated into clinical practice based on the results of large randomized clinical trials, with the recent U.S. Food and Drug Administration approval of dabigatran for stroke prevention in atrial fibrillation and rivaroxaban for deep vein thrombosis and stroke prevention in atrial fibrillation, with multiple other agents in various stages of development for these and other indications. This review discusses the pharmacological properties, clinical results, and therapeutic applications of novel and new anticoagulants, thereby providing an outline for the future of anticoagulation in cardiovascular disease.
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