book_title | section_heading | file_path | line_start | line_end | snippet -----------+-----------------+-----------+------------+----------+--------- GOLDMAN-CECIL MEDICINE INTERNATIONAL EDITION, 2 VOLUME SET | NORMAL ELECTROCARDIOGRAM | /textbooks/9780323930345/9780323930345_block5.md | 734 | 736 | ...The QRS complex is most nearly isoelectric in lead aVL, so the >>>QRS axis<<< will be perpendicu-lar to lead aVL. Because aVL points to -30 degrees, the >>>QRS axis<<< must be approximately -120 or +60 degrees. Because the QRS... Harrison’s Principles of Internal Medicine 22E (2025, McGraw Hill Medical) | BUNDLE BRANCH BLOCKS AND RELATED PATTERNS | /textbooks/9781265977061/9781265977061_block27.md | 1390 | 1393 | ...Instead, they are associated with shifts in the frontal plane >>>QRS axis<<< (leftward or rightward, respectively). Left anterior fascicular block (>>>QRS axis<<< more negative than −45°) is probably the most common cause of marked left axis deviation in adults. In... ROSEN's Emergency medicine Concepts and clinical practice | Electrocardiography | /textbooks/9780323757898/9780323757898_block30.md | 1149 | 1155 | ...Right axis deviation is present when the >>>QRS axis<<< is greater than the upper limit of normal for the child's age; this is seen with right ventricular hypertrophy and right bundle branch block. A "superior" >>>QRS axis<<< (0 to... Fuster and Hurst's The Heart, 15th Edition | Electrocardiogram | /textbooks/9781264257560/9781264257560_block9.md | 3632 | 3634 | There are no specific electrocardiogram findings of TV dis-ease, although some of the following abnormalities may be present: (1) RV hypertrophy and "strain" with right >>>QRS axis<<<, (2) RA enlargement with prominent P waves, (3) incomplete right bundle branch... ROSEN's Emergency medicine Concepts and clinical practice | Narrow-Complex Tachycardia | /textbooks/9780323757898/9780323757898_block11.md | 1994 | 1998 | ...bundle branch block, right bundle branch block, or hybrid pattern>>>QRS axis<<< normal or near-normalFrequently bizarre >>>QRS axis<<<QRS rarely > 0.14 sQRS often > 0... The Harriet Lane Handbook - The Johns Hopkins Hospital, 23rd e | j. Hypertrophy/enlargement | /textbooks/9780323876988/9780323876988_block1.md | 7223 | 7225 | ...Diagnosed by >>>QRS axis<<<, voltage, and R/S ratio (Box 7.3; see also Table 7.4). Creasy & Resnik’s MATERNAL - FETAL MEDICINE Principles and Practice | ELECTROCARDIOGRAPHIC CHANGES | /textbooks/9780323828499/9780323828499_block13.md | 844 | 844 | The mean >>>QRS axis<<< may shift to the left25 as a result of the elevated diaphragm. In later pregnancy, the axis may shift to the right when the fetus descends into the pelvis. Minor ST segment and T-wave changes... Roberts and Hedges’ Clinical Procedures in Emergency | Electrocardiography | /textbooks/9780323354783/9780323354783_block4.md | 2953 | 2954 | ...Electrical alternans is a beat-to-beat alternation in >>>QRS axis<<< caused by the pendulum motion of the heart within the fluid-filled pericardial sac.103 Alternans has been observed in 22% of medical patients with tamponade104 and in 5... ROSEN's Emergency medicine Concepts and clinical practice | Canadian Syncope Risk Score | /textbooks/9780323757898/9780323757898_block2.md | 2210 | 2219 | ...Abnormal >>>QRS axis<<< (<−30 degrees or >110 degrees) +1 6. Prolonged QRS interval >130 ms +1 7. Prolonged corrected QT interval >.480 ms +2 8. Emergency department diagnosis of vasovagal syncope -2 9. Emergency department diagnosis of cardiac syncope +2... GOLDMAN-CECIL MEDICINE [... Output truncated due to length. 128 tokens/463 characters removed ...]