Vasovagal reactions in ultrasound guided musculoskeletal injections: A study of 2,462 procedures

Convulsive Syncope as a Complication of Outpatient Procedures: A Case Series and Review of the Literature

ABSTRACT

Sports medicine providers often perform various outpatient procedures to manage musculoskeletal and neuropathic conditions. Vasovagal syncope is a rare but a possible complication. Convulsive syncope is one subtype that involves brief extensor stiffening and nonsustained myoclonus and can be easily mistaken for seizures. We present a case series of convulsive syncope as a complication of common sports medicine outpatient procedures. We aim to describe how to identify this condition, and offer risk stratification and management strategies to mitigate the risks of this complication. Sports medicine providers who routinely practice outpatient procedures should be aware of this complication. Simple changes in approaching the procedure may mitigate these risks. High- and intermediate-risk features of the syncopal episode should prompt physicians to seek further evaluation by a specialist to rule out more serious conditions. In all instances, appropriate on-site support and equipment for emergent resuscitation and management should be prepared.

Improving the patient experience during musculoskeletal interventional procedures

In the patient-centered practice of musculoskeletal interventional radiology, pre-procedure, intra-procedure, and post-procedure factors impact the patient's overall experience. Opportunities to improve the patient experience begin before the patient procedure starts, with smooth scheduling of the appointment, a positive office environment, and appropriate communication by the musculoskeletal interventional radiology staff before the procedure, including clear expectations regarding wait times. The initial conversation between the radiologist and the patient, including the informed consent process, is a crucial opportunity for creating rapport with the patient and generating trust in the radiologist. Being able to interpret a patient's verbal and non-verbal cues during this conversation can reduce anxiety and enhance relaxation. During the procedure, there are interventions which can decrease anxiety and reduce the perception of pain by the patient. These include psychological interventions such as self-induced hypnosis, communication-based interventions such as empathic communication to mold a patient's interpretation of anxiety and painful stimuli, and the use of ancillary tools such as music or video stimulation. Finally, clear post-procedure expectations regarding post-procedure pain and its management and assurances of access to the musculoskeletal interventional radiology team can facilitate an uncomplicated post-procedure recovery.

Vasovagal Syncope and Transient Asystole During Peripheral Nerve Blockade

Vasovagal syncope has been associated with chronic pain procedures, phlebotomy, and musculoskeletal injections. While vasovagal syncope is commonly associated with interventional pain procedures, its occurrence during peripheral nerve block procedures has not been reported. We report a case of vasovagal syncope leading to transient asystole in a patient undergoing a lower extremity peripheral nerve block procedure. The episode resolved after halting the procedure and administering ephedrine, atropine, and intravenous fluids.