secondary ...Figure 31.39 Electrocardiogram of a patient with angina at rest and elevated...Figure 31.40 Examples of Wellens-type T-wave abnormalities.
(a) Wellens-type...Figure 31.41 Non-Wellens biphasic T waves.
(a) Biphasic T wave in leads V
2–VFigure 31.42 Examples of posterior infarction.
(a) ST-segment depression in ...Figure 31.43 Example of subtle ST-segment elevation in two contiguous leads ...Figure 31.44 Hypokalemia and electrocardiographic abnormalities.
(a) Note th...Figure 31.45 Global T-wave inversion with marked QT prolongation in a 77-yea...Figure 31.46 Examples of normal variants of repolarization.
(a) Persistent j...Figure 31.47
(a) Upsloping ST-segment depression in sinus tachycardia. Durin...Figure 31.48 Various patterns of ST-segment elevation. Reproduced with permi...Figure 31.49 Diffuse ST elevation in ~ all leads and ST depression in lead a...Figure 31.50 ECG of a patient who has lung cancer. Sinus tachycardia with di...Figure 31.51 Early repolarization with ST-segment elevation in the inferior ...Figure 31.52 Early repolarization with a normal variant T-wave inversion in ...Figure 31.53 Diffuse ST elevation in most leads, with ST depression in lead ...Figure 31.54 SVT with a typical LBBB in leads I and aVL. Concordant ST eleva...Figure 31.55 LBBB with discordant ST-segment changes. However, the T wave is...Figure 31.56 LBBB with abnormal T waves.
(a, b) Discordant ST elevation in VFigure 31.57 At first glance, it seems there is ST elevation in the inferior...Figure 31.58
(a) There are ST elevations in leads V
1–V
4, ST depressions in t...Figure 31.59 Atrial flutter that simulates ST-segment elevation. “F” indicat...Figure 31.60 Atrial flutter that simulates ST-segment depression. The undula...Figure 31.61 Type 1 Brugada pattern in V
1 and V
2, with a downsloping ST elev...Figure 31.62 STEMI ECG variants.
Right image- DeWinter complex in V1-V6.
Mi...Figure 31.63 QT is not measured using the end of the T wave. Instead, a line...Figure 31.64 Typical ST–T morphologies in hypokalemia, hypocalcemia, congeni...Figure 31.65 On the left, markedly prolonged QT with a notched T wave is see...Figure 31.66 Hypokalemia and a pattern that should not be confused with hypo...Figure 31.67 Two ECG examples of hypokalemia.
(a) Prolonged QT (QT ~600 ms, ...Figure 31.68 Stages of hyperkalemia.Figure 31.69
(a) Hyperkalemia of 6.1 mEq/l. Note that T waves are not tall, ...Figure 31.70 Hypocalcemia and hypercalcemia.Figure 31.71 Digitalis effect in a patient with AF. Note the prominent U wav...Figure 31.72 Hypothermia. QRS is prolonged > 120 ms. It is not a typical LBB...Figure 31.73 Change of vector of depolarization between a normal heart and p...Figure 31.74 Poor precordial R-wave progression with a very small R wave < 1...Figure 31.75 Poor precordial R-wave progression with a monophasic Q (QS) in ...Figure 31.76 Approach to narrow complex tachycardias.Figure 31.77 Narrow complex tachycardia. A deflection is seen at the end of ...Figure 31.78 Narrow complex tachycardia, irregular. Differential diagnosis:...Figure 31.79 The rhythm is irregular. Look for P waves: P waves are present,...Figure 31.80 Regular wide complex tachycardia. SVT vs.VT? Look for P wave...Figure 31.81 Run of irregular wide complex tachycardia. The irregularity doe...Figure 31.82 Location of the AV block.Figure 31.83 Repetition of groups of beats separated by a pause. Think of se...Figure 31.84 Regular, narrow complex rhythm, rate ~55 bpm. P waves are seen ...Figure 31.85 AF with a ventricular rate that is slow and mostly regular. Thi...Figure 31.86 Regular wide complex rhythm interrupted by narrower complexes t...Figure 31.87 2:1 AV block that can be easily mistaken for sinus bradycardia,...Figure 31.88 Outside the PVCs, the rhythm seems grossly regular. Analyze the...Figure 31.89 Regular narrow complex rhythm without any P wave. This is a jun...Figure 31.90 Regular narrow complex rhythm (~50 bpm). Negative P waves are s...Figure 31.91 Sinus rhythm is interrupted by a wide complex rhythm. The wide ...Figure 31.92 Right and left arm electrodes switched. The leads’ axis changes...Figure 31.93 Right arm and right leg electrodes switched. The leads’ axis ch...Figure 31.94 Right arm and right leg electrodes switched. Note how lead II i...Figure 31.95 Subendocardial ischemia (diffuse ST depression, not localized t...Figure 31.96 Phases of STEMI.Figure 31.97 The patient presents with chest discomfort that has started 4 h...Figure 31.98 In inferior MI, the LCx current of injury looks to the left and...Figure 31.99 The rhythm initially appears to be sinus bradycardia (~55 bpm)....Figure 31.100
Frontal plane of left-axis deviation. This may be secondary to...Figure 31.101
Horizontal plane of LV hypertrophy. The vector of depolarizati...Figure 31.102
(a) Frontal plane of RV hypertrophy or RV strain such as PE. T...Figure 31.103
(b) Horizontal plane of COPD. (a) Horizontal plane of RV hyper...
30 Chapter 32Figure 32.1 (a) Frontal view showing how the parasternal short-axis views cut...Figure 32.2 (a) Diagram of the parasternal short-axis view and various LV se...Figure 32.3 (a) Parasternal short-axis view at the level of the mitral valve...Figure 32.4 Diagram of the parasternal short-axis view at the level of the a...Figure 32.5 Parasternal short-axis view as described in Figure 32.4. A bicus...Figure 32.6 (a) Diagram of the parasternal long-axis view. Concerning the ao...Figure 32.7 (a) Parasternal long-axis view. Measurements are obtained from t...Figure 32.8 (a) Parasternal RV inflow view, which is obtained by angling the...Figure 32.9 (a) Diagram and (b) echocardiogram of the apical four-chamber vi...Figure 32.10 (a) Diagram and (b) echocardiogram of the apical two-chamber vi...Figure 32.11 (a) Diagram and (b) example of the subcostal view.Figure 32.12 Subcostal view with a medial tilt to visualize the IVC. A large...Figure 32.13 Arterial distribution of various echo segments on the short-axi...Figure 32.14 (a) Example of RV enlargement and RV volume overload on the para...Figure 32.15 During systole, in LBBB: (1) the septum moves in towards the LV...Figure 32.16 M-mode imaging shows paradoxical septal motion of RV volume ove...Figure 32.17 Constrictive pericarditis. Two septal abnormalities and one pos...Figure 32.18 Pericardial processes are characterized by septal compression t...Figure 32.19 Posterior mitral leaflet prolapse. In systole, the leaflet prol...Figure 32.20 Rheumatic mitral valve. (a) Long-axis view in diastole. See the...Figure 32.21 Posterior mitral annular calcifications (MAC) in the long-axis ...Figure 32.22 Difference in aortic orifice shape between the tricuspid and bi...Figure 32.23 MR, four-chamber view. The blue, backward flow between the LV a...Figure 32.24 Severe MR on four-chamber TEE view. Severity criteria of MR:...Figure 32.25 MR, long-axis view. The blue flow between LV and LA is MR (arro...Figure 32.26 Systolic flow reversal of pulmonary venous flow in a patient wi...Figure 32.27 CW Doppler across the mitral valve on an apical four-chamber vi...Figure 32.28 Severe TR seen from the short-axis view (aortic valve level) (a...Figure 32.29 TR. CW Doppler across the tricuspid valve on a four-chamber vie...Figure 32.30 Aortic insufficiency (AI). Long-axis view shows blue–backward f...Figure 32.31 AI. The width of the AI jet may also be assessed on the aortic ...Figure 32.32 AI on three-chamber apical view. This view is not accurate for ...Figure 32.33 AI spectral Doppler assessment on an apical five-chamber view. ...Figure 32.34 AS. CW Doppler across the aortic valve on the apical five-chamb...Figure 32.35 Severely increased velocity on aortic Doppler. Several features...Figure 32.36 MS assessment. (a) CW Doppler across the mitral valve (MV) on ...Figure 32.37 PW Doppler at the level of the mitral valve. During diastole, f...Figure 32.38 PW Doppler across the pulmonary veins on a four-chamber view, p...Figure 32.39 Myocardial tissue Doppler at the level of the mitral annulus. T...Figure 32.40 2D tissue strain imaging of the LV on a two-chamber view. Strai...Figure 32.41 M-mode across the mitral valve on the parasternal long-axis vie...Figure 32.42 M-mode across the aortic valve on the long-axis view. The first...Figure 32.43 Examples of M-mode across the mitral valve. (a) Posterior mitral...Figure 32.44 Diffuse pericardial effusion on long-axis view, identified as a...Figure 32.45 Pericardial effusion on multiple views. In a supine position, a...Figure 32.46 (a) Pericardial effusion (stars) and pleural effusion (bar). Th...Figure 32.47 Diagnosis of diastolic dysfunction and assessment of
