Circumflex - Study guides, Class notes & Summaries

Where and why are lumbar punctures performed? - Answer- Spinal Block -> Anesthetic (into epidural space) Spinal Tap -> CSF extraction (into subarachnoid space)W B/W L3/L4 or L4/L5 NB: Posterior to this is *cauda equina* Where does a *herniated intervertebral* disk occur? What causes it? - Answer- Occurs b/w L4/L5 or *L5/S1* and C5/C6 or C6/C7 NB: affects lower spinal nerve # Degeneration of annulus fibrosis followed by *sudden compression* of nucleus pulposus What is the dif...

cardio anatomy - layers epicardium - outer myocardium - middle endocardium - innermost pericardial sac surrounds the heart and helps prevent overfilling - 2 layers --> parietal pericardium - visceral pericardium 4 heart chambers right atrium - deoxygenated blood from vena cavas right ventricle - receives blood from RA and pumps into LUNGS left atrium - receives oxygenated blood from lungs left ventricle - largest and most muscular, receives oxygenated blood from lungs fr...

BKAT Test Study Guide with complete solutions. What to do first if patient has chest pain. ️ Rest! ECG changes in an acute MI ️ ST elevation in 2 or more contiguous leads. Ischemia d/t full thickness loss of muscle. EMERGENCY. Inferior leads ️ II, III, aVF. RCA occlusion. Septal leads ️ V1 & V2. Anterior leads ️ V1 - V4. LAD lesion. Lateral leads ️ V5, V6, I, and aVL. Circumflex lesion. Cardiac enzymes ️ Troponins, CK-MB, and CK Changes in CK ️ Rise: 3-6 hours Peak: 24...

A patient presents to the emergency department with complaints of chest pain. The 12-lead EKG reveals ST segment elevation in leads I and aVL. The initial BP is 112/69 and decreases to a systolic of 60 following a dose of nitroglycerin 0.4 mg SL. The next most appropriate intervention is to: A. complete a fibrinolytic check sheet B. initate a dopamine drip for BP control C. obtain a right-sided 12-lead EKG D. administer a 0.9% NS bolus IV correct answersD. administer a 0.9% NS bolus IV ...

A blockage to which coronary artery can cause AV Block? correct answersPosterior Descending Artery most commonly supplied by RCA but could be supplied by the circumflex What type of tissue has the longest refractory period? correct answersVentricular Is the femoral vein medial or lateral to the femoral artery? correct answersThe femoral vein is medial to the femoral artery At what value is something statistically significant? correct answersP<0.05 What are the normal cardiac press...

A patient complained of Epigastric pain has ST elevation in ECG leads II, III, and aVF. She is diagnosed with an inferior MI, and NTG is administered sublingually. Her blood pressure drops from 120/47 to 90/60 so the Provider order is a right-sided ECG while awaiting cardiology. Where is the correct leap placement for V4R to detect right ventricular MI's? a. 2nd ICS R sternal border b. 4th ICS R mid-cliviclar line c. 5th ICS L mid-clavicular line d. 5th ICS R mid-axillary line correct answ...

Bio 2300 Unit 4 Exam Latest Update Graded A+ This opening posterior to (but not an actual part of) the respiratory diaphragm. aortic hiatus These muscles lie directly under the parietal pleura and therefore can be clearly seen on an internal view of the thoracic cavity. innermost intercostals These muscles have a posterior membrane and therefore are clearly seen near the sternum. internal intercostals The esophagus passes through the: esophageal hiatus Which ribs a are true r...

Which of the following coronary arteries give rise to the circumflex branch - Answer Left coronary artery Which of the following is the largest and thickest heart chamber - Answer Left ventricle The cardiac muscle tissue of the heart is called - Answer Myocardium Which of the following occurs when the coronary circulation becomes blocked and the cardiac muscle cells die from lack of oxygen - Answer Infarction

Where do coronary arteries start? Ans: Arise directly from aorta near aortic valve What does RCA supply? Ans: R atrium Most of R ventricle Inferior wall of left ventricle AV node Bundle of His Supplies SA node 60% of the time What does LCA supply? Ans: Most of left ventricle Two divisions: Left Anterior descending - Left ventricle Interventricular septum Inferior apex (in most people) Circumflex - Lateral and inferior walls of left ventricle Portions of left atrium Supplies SA...

Lumbar puncture (tap) & epidural anesthesia correct answers → lumbar puncture: needle into subarachnoid space to extract CSF or to inject anesthetic to epidural space Needle inserted between L3/L4 (or L4/L5) level of horizontal line through upper points of iliac crests Spinal cord ends in: Adults: L2 Children: L3 Dural sac extends caudally to level S2 Herniated IV disc correct answers • Individuals younger than age 50 @ L4/L5 or L5/S1 OR C5/C6 or C6/C7 • Back pain radia...