Anesthesia - Human Anatomy for Anesthesia - By APC

Explains the three broad anesthesia types, local, regional, and general, and subtypes such as topical versus infiltration, peripheral nerve/plexus blocks, epidural and spinal, and inhalational, intravenous, and balanced general anesthesia.

Trace the evolution of anesthesia from nitrous oxide in 1845 through ether, chloroform, obstetric anesthesia, endotracheal intubation in 1878, cocaine use, to the birth of spinal anesthesia in 1895.

Learn how general anesthesia induces unconsciousness, with intubation or laryngeal mask airway, using inhalational or intravenous agents, and manage mild side effects like sore throat, disorientation, and rare malignant hyperthermia.

Learn regional anesthesia basics with epidural and spinal techniques, identify the lumbar targets and spaces, and review brachial plexus and femoral nerve blocks for lower body procedures.

Compare spinal and epidural anesthesia by location and catheter use. Spinal injects into cerebrospinal fluid with no catheter; epidural uses the epidural space with catheters, commonly in childbirth.

Explore how sedation differs from general anesthesia, using monitored anesthesia care with intravenous mild sedatives to relax patients during short procedures, and anticipate common side effects like nausea.

Explain how lidocaine provides local anesthesia via injection or cream for minor procedures. Show its use in piercing and catheter placement, and note minor, self-resolving side effects.

Explore head anatomy from a lateral view, detailing skeletal and muscular structures, trigeminal and facial nerves, facial nerve branches, and the parotid, submandibular, and sublingual glands in anesthesia.

Explore head anatomy for anesthesia, detailing brain regions, cerebellum, brainstem, cranial nerves exiting the cranium, and eyeball anatomy including eyelid ptosis.

Explore the key head anatomy for anesthesia, including the frontal, nasal, maxillary, zygomatic, and mandible bones, plus lacrimal bone, inferior and superior nasal conchae for clinical relevance.

Explore lateral head anatomy for anesthesia, identifying the frontal, parietal, temporal, and occipital bones, plus zygomatic, maxilla, mandible, nasal, lacrimal, and Benoit bones.

Explore neck anatomy for anesthesia, focusing on the sternocleidomastoid as the dominant neck muscle, thyroid and cricoid cartilages, and vessels like the internal jugular vein and carotid artery.

Explore neck anatomy relevant to anesthesia, focusing on the thyroid gland and its lobes, with thyroid and cricoid cartilages, and the surrounding muscles. Highlight thyroid abnormalities such as Hashimoto's thyroiditis.

From a lateral view, identify neck landmarks for anesthesia: thyroid and cricoid cartilage, thyroid gland, trachea, esophagus, and carotid sheath with common carotid artery, internal jugular vein, and vagus nerve.

Explore anterior and posterior thorax surface anatomy, including key landmarks (jugular notch, clavicles, manubrium, coastal angle, mammary glands), inspection, palpation, auscultation, and spinal anesthesia at L4 and L5.

Explore thorax skeletal anatomy: the thoracic cage with coastal cartilage, sternum (manubrium, body, xiphoid), clavicle, and scapula, plus vertebrae, and note the risk of pneumothorax or hemothorax from rib injury.

Explore thorax anatomy by examining the rib cage, sternum, diaphragm, vertebral column, and lungs, including right and left lobes, pleural cavities, and the bronchial tree from carina to bronchi.

Tracheostomy creates a hole in the trachea to relieve airway obstruction, using vertical or horizontal incisions. It is indicated for airway obstruction, secretion management, and chronic lung insufficiency in ICU.

Explore flexible and rigid bronchoscopy, including diagnostic and therapeutic uses, anesthesia, ventilation considerations, plus foreign body removal and basic choking maneuvers.

Explore spine and spinal cord anatomy for anesthesia, detailing cervical, thoracic, and lumbar vertebrae, fused sacrum and coccyx, and how position affects spinal anesthesia procedures.

Examine upper abdominal anatomy for anesthesia, detailing thoracic cage, diaphragm, and organs, including liver, gall bladder, spleen, pancreas, stomach, small intestine, and large intestine, along with heart and lung relationships.

Explore abdominal anatomy for anesthesia, including organ layout (liver, gallbladder, stomach, pancreas, spleen, kidneys, adrenal glands), the small and large intestines, appendix, omentum, and innervation.

Explore male perineum anatomy for anesthesia, detailing the penis, testes and epididymis, prostate and bladder, urethra, sacral landmarks, and the digital rectal examination for prostate health.

Explore the female perineal anatomy from a left-side view, detailing the ovary, uterus with cervix and vagina, urethra, labia majora and minora, and the pouch of Douglas behind the uterus.

Explore perineal anatomy and its role in anesthesia during childbirth, detailing the perineal region, urogenital hiatus, perineal body, and key muscles, and episiotomy considerations with local anesthesia.