Clinical Atlas of Ultrasound-Guided Regional Anesthesia Reference 2026

Stop Losing Blocks Before the Needle Ever Moves Regional anesthesia fails in the seconds between placing the probe and recognizing the target, not at the needle. Every other atlas prints one perfect frozen frame per block and leaves the reader to infer how it was obtained. This volume prints the correct screen and the wrong ones beside it, tracing each near-miss image to its cause and naming the single adjustment that recovers the view, across twenty-five chapters spanning imaging physics, safety, and every major block region. The result is a reference that answers the question an atlas cannot: what to do in the four seconds after the nerve disappears. What this reference puts within reach at the machine: Machine optimization in a fixed order of depth, gain, time-gain compensation, and focal zone - set the screen in thirty seconds instead of adjusting three controls at once Anisotropy, shadowing, enhancement, and reverberation treated as diagnostic findings - recover a mis-insonated nerve by tilting rather than sliding away from it A five-maneuver interrogation separating nerve from tendon, vessel, and fascia - settle any structure’s identity with the probe already in hand Needle geometry, coplanar alignment, and hydrolocation - distinguish a true tip from a mid-shaft cross-section before advancing toward pleura or a named vessel Systemic toxicity prevention, recognition, and lipid rescue, including the delayed presentation now typical after high-volume trunk blockade Every major block region - interscalene through costoclavicular, paravertebral, erector spinae, chest wall, abdominal wall, quadratus lumborum, hip, knee, sciatic, ankle, head and neck Motor-sparing decisions made explicit - pericapsular against fascia iliaca, adductor canal against femoral, and the level and volume errors that forfeit each The Master Screen-Match Index consolidating forty-seven target screens, twenty look-alike discriminators, and a correction table organized by what is on the screen Put the correct screen and its corrections on the block room shelf where the decisions are made.