Term
| IN A NML HEART DURING THE ST SEFMENT ALL OF THE CARDIAC MYOCYTES SHOULD ALL BE IN WHAT PHASE? |
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Definition
| PHASE 2. NOT DEPOLARIZING OR REPOLARIZING, THEY ARE DEPOLARIZED. END UP WITH A NICE FLAT ST SEGMENT. |
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Term
| AFTER THE FIRST FEW DAYS POST MI WHAT DOES THE T WAVE DO? |
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Definition
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Term
| WHAT TYPE OF MEDICATIONS IMPROVES SUBENDOCARDIAL BLOOD FLOW AND CORRECTS HYPOPERFUSION/ANGINA PECTORIS? |
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Definition
| NTG OR VASODILATERS. THEY DECREASES AFTERLOAD. |
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Term
| WHAT ARE THE MOST COMMON EKG FINDING WITH SUBENDOCARDIAL ISCHEMIA. |
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Definition
| ST SEGMENT DEPRESSION (ST SEGMENT ELEVATION SEEN IN AVR). THE OPPOSITE IS SEEN DURING TRANSMURAL ISCHEMIA (ST SEGMENT ELEVTATION). NO Q WAVE ABNORMALITIES. |
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Term
| THE SEGMENT OR ELEVATION IS R/T TO WHAT IN RELATED TO DEPOLARIZATION/REPOLARIZATION? |
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Definition
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Term
| WHAT CHANGES ON THE EKG WILL YOU SEE WITH TRANSITION FROM ISCHEMIA TO INFARCTION? |
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Definition
| THE ST SEGMENT WILL RETURN TO BASELINE BUT B/C THERE ARE AREAS OF DAMAGE GENERALLY MAY SEE T WAVE INVERSION. |
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Term
| AFTER SEVERAL WEEKS/MONTHS THE NECROTIC AREA IS MADE INTO WHAT TYPE OF TISSUE? |
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Definition
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Term
| WITH A SUBENDOCARDIAL ISCHEMIA WILL THERE BE Q WAVES? |
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Definition
| NON-SIGNIFICANT Q WAVES <3MM |
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Term
| WHAT ARE CAUSES FOR A FALSE POSITIVE TEST FOR EXERCISE/SRESS TESTING? |
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Definition
| DIGITALIS, HYPOKALEMIA, LVH, OR WPW |
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Term
| EKG CHANGES WITH ACUTE TRANSMURAL INFARCTION OCCURS IN 2 SEQUENTIAL PHASES. WHAT ARE THEY? |
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Definition
| ACUTE (ST SEGMENT ELEVATION/ Q WAVES) AND EVOLVING (DEEP T WAVE INVERSIONS) -- T WAVE INVERSIONS IN LEADS THAT PREVIOUSLY SHOWED ST SEGMENT ELEVATION. |
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Term
| WHAT DOES SCAR TISSUE DO TO COMPLIANCE AND CONTRACTILITY? |
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Definition
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Term
| WHAT DOES SCAR TISSUE DO TO THE PASSIVE TENSION CURVE AND THE ACTIVE TENSION CURVE? |
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Definition
| ACTIVE TENSION CURVE CURVES DOWN AND TO THE RIGHT WHILE THE PASSIVE TENSION CURVE GO UP AND TO THE LEFT. |
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Term
| WHAT SCAR TISSUE WHAT WILL HAPPEN WITH SV AND WHAT WILL HAPPEN TO MAINTAIN CO? |
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Definition
| SV IS DECREASED AND TO MAINTAIN CO, HR WILL INCREASE |
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Term
| WITH A TRANSMURAL MYOCARDIAL ISCHEMIA WHEN DOES Q WAVES BEGIN TO GET SIGNIFICANT? |
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Definition
| WHEN THE TRANSMURAL INFARCTION IS NEARLY COMPLETE. AS Q WAVE GETS LARGER R WAVE GETS SMALLER. STILL HAVE ST SEGMENT ELEVATION AND T WAVE INVERSION. |
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Term
| WHAT RECIPRICAL CHANGES IN WHAT LEADS WILL YOU SEE WITH AN INFERIOR MI? |
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Definition
| DEPRESSION IN LEADS V1-V3, I, AND AVL. |
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Term
| ARE Q WAVES EVER SIGNIFICANT IN LEAD AVR? |
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Definition
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Term
| ARE Q WAVES IN LEAD V1 ALONE IGNORED? |
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Definition
| YES, UNLESS THERE ARE OTHER ABNORMLAITIES IN PRECORDIAL LEADS. |
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Term
| Q WAVES IN LEAD III ALONE ARE IGNORED, UNLESS WHAT? |
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Definition
| THERE ARE ABNORMALITIES IN AVF OR LEAD II OR BOTH. Q WAVES IN AVF AND LEAD III MUST BE WIDER AND DEEPER THATN Q WAVES IN ANTERIOR LEADS. |
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Term
| Q WAVES WITH ST SEGMENT OR T WAVE ABNORMALITIES IN THE SAME LEAD TEND TO BE MORE RELIABLE FOR THE DIAGNOSIS OF WHAT? |
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Definition
| MI THAN Q WAVES W/T SUCH ST ABNORMALITIES. |
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Term
| Q WAVES IN THE PRESENCE OF WHAT TYPE OF BBB ARE NON SIGNIFICANT? |
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Definition
| LEFT BBB. Q WAVES IN THE PRESENCE OF RIGHT BBB HAVE THEIR USUAL SIGNIFICANCE. Q WAVES IN THE PRESENCE OF LVH ARE LESS RELIABLE IN THE DIAGNOSIS OF MYOCARDIAL INFARCTION. |
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Term
| THE MOST COMMONLY USED SINGLE CRITERION FOR A Q WAVE SIGNIFICANT FOR MYOCARDIAL INFARCTION IS WHAT? |
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Definition
| DURATION >0.04 SEC AND AMPLITUDE > 1/4 THE R WAVE AMPLITUDE IN THE SAME LEAD. |
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Term
| IF YOU HAVE OCCLUSION OF LAD WHAT WALL IS GOING TO BE AFFECTED? |
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Definition
| ANTERIOR AND SEPTAL WALLS ARE GOING TO BE ISCHEMIC FIRST, THEN INFARCTED (IF DON'T REVERSE ISCHEMIA). |
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Term
| WHY DO WE END U WITH Q WAVES IN LEAD V2 AND V3 WITH LAD OCCLUSION? |
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Definition
| CONDUCTION GOES AWAY FROM V2 AND V3. THERE IS ELECTRICAL ACTIVITY ON THE POSTERIOR WALL. |
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Term
| AS ANTERIOR INFARCT PROGRESSES WILL SEE CHANGES IN WHAT LEAD FIRST? |
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Definition
| V2, THEN V3, AND IF LARGE ENOUGH V4. |
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Term
| WHAT LEADS DO WE LOOK AT WITH ANTERIOR OR ANTERIOR SEPTAL? |
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Definition
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