st abnormality possible digitalis effect

Supraventricular tachycardia (e.g. Thus, digoxin causes false-positive ST depression detected by ambulatory monitoring. st abnormality possible digitalis effect. my st segment looked lowered. WebIschemic ST-T changes. Acute STEMI may produce ST elevation with either concave, convex or obliquely straight morphology. min-height: 0px; The ST Segment represents the interval between ventricular depolarization and repolarization. What does ecg result of sinus tachycardia and nonspecific st abnormality mean? oxalis flower meaning / millenia mall news today / st abnormality possible digitalis effect. It affected which part of the heart enlarge? Undefined cookies are those that are being analyzed and have not been classified into a category as yet. The ecg features of digoxin effect are seen with therapeutic doses of digoxin and There is normal sinus rythm. This depression is usually less than 1 mm, and produces a "scooped" appearance the "salvador dali mustache" st. Digitalis shortens refractoriness and speeds conduction in accessory AV conducting pathways. For example, STE in the high lateral leads I + aVL typically produces reciprocal ST depression in lead III (see example below). It is a NORMAL finding in someone on that drug. WebNonspecific ST abnormality possible digitalis effect; ECG 2. The ST Segment represents the interval between ventricular depolarization and repolarization. The ST segment may be either elevated or depressed. Then, they admit me for 10 hours to watch me and to take troponin levels, etc. But it is not giving any problems & will not require any medical or surgical intervention unless there is some severe infection. Hypokalemia: serum potassium levels below 3 mEq/L causes progressive depression of the ST-segment, a decrease in T wave amplitude, and an increase in U wave amplitude By using our website, you consent to our use of cookies. ST Abnormality/Right Atrial Enlargement on ECG, Help! These are all the EKGs Ive had since being diagnosed with COVID Normal sinus rhythm Nonspecific T wave abnormality Abnormal ECG When compared with ECG of 05-JUN-2021 20:27, No significant change was found. Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked. The arrhythmia subsides spontaneously: ECG 2 Diagnosis. This site uses Akismet to reduce spam. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. I just had an ECG done because they are testing for Long QT Syndrome. Mine, too, last April, said ST Abnormalities, possible Digitalis effect. } scary stuff. Emergency Physician in Prehospital and Retrieval Medicine in Sydney, Australia. WebNonspecific ST abnormality possible digitalis effect; ECG 2. This website uses cookies to improve your experience while you navigate through the website. Find out in this article from Missouri Medicine. What causes ST and T wave abnormality? BER is a normal variant commonly seen in young, healthy patients. Left Ventricular Hypertrophy (LVH) causes a similar pattern of repolarization abnormalities as LBBB, with ST elevation in the leads with deep S-waves (usually V1-3) and ST depression/T-wave inversion in the leads with tall R waves (I, aVL, V5-6). We also use third-party cookies that help us analyze and understand how you use this website. }, #FOAMed Medical Education Resources byLITFLis licensed under aCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. By clicking Accept, you consent to the use of ALL the cookies. It can be depressed by ischemia low potassium depressed and rounded in There is ST elevation with deep Q waves and inverted T waves in V1-3. i was having chest pains and sinus tachycardia. Just had a ecg because of palpitations and night sweats and tremor in both hands. Rhythm analysis indicates atrial fibrillation with nonspecific ST segment and T wave abnormalities, consistent with digitalis effect.. WebDigoxin. Educational text answers on HealthTap are not intended for individual diagnosis, treatment or prescription. #mergeRow-gdpr fieldset label { The morphology of the ST segment depression is highly characteristic of the digoxin effect. Find out in this article from Missouri Medicine. Rhythm analysis indicates atrial fibrillation with nonspecific ST segment and T wave abnormalities, consistent with digitalis effect.. If you have frequent or prolonged ventricular premature complexes, this may reduce your hearts ability to pump blood efficiently. Transient ST elevation after DC cardioversion from VF, J waves in hypothermia simulating ST elevation, ST segment morphology in myocardial ischaemia. what does this mean and is it serious? Twitter: @rob_buttner. At times, the J point (junction of the QRS complex and the ST segment) may be depressed. Supraventricular tachycardia (SVT), rate 214/min, followed by one sinus-originated complex and a short run of aberrantly conducted SVT (left bundle branch block pattern) } Thanks! They said I was a very low risk heart attack candidate, but, since that damn machine said what it did, they had to take precautions. #mergeRow-gdpr fieldset label { Is a low-fat diet really that heart healthy after all? Learn what happens before, during and after a heart attack occurs. The ecg features of digoxin effect are seen with therapeutic doses of digoxin and The ecg features of digoxin effect are seen with therapeutic doses of digoxin and border: none; Common side effects include: nausea, diarrhea, vomiting, headache, dizziness, skin rash, and; mental changes. Factors affecting the ST-T and U wave configuration include: Intrinsic myocardial disease (e.g., myocarditis, ischemia, infarction, infiltrative or myopathic processes) Drugs (e.g., digoxin, quinidine, tricyclics, and many others) Electrolyte abnormalities of potassium, magnesium, calcium. i am also anemic and hemoglobin is 11.3? Many digoxin side effects are dose dependent and happen when blood levels are over the narrow therapeutic range. #mergeRow-gdpr { Your thoughts are greatly appreciated. All registration fields are required. salvador dali mustache ekg. You have posted a question to a very old thread. Anyway, since that night in April, I have been a basket case. padding-bottom: 0px; Acute Pericarditis causes widespread concave (saddleback) ST segment elevation with PR segment depression in multiple leads, typically involving I, II, III, aVF, aVL, and V2-6. Webst abnormality possible digitalis effect. Ecg says sinus rhythm, widespread ST-T abnormality - what does this mean?? These are all the EKGs Ive had since being diagnosed with COVID Share this conversation. WebThe normal ST segment is flat and isoelectric. Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them. There has been no response to vagal stimulation. min-height: 0px; Video chat with a U.S. board-certified doctor 24/7 in a minute. The results read:Normal Sinus Rhythm, Right Atrial Enlargement, ST Abnormality, possible Digitalis Effect, Abnormal ECG. May be normal variant ST Abnormality, possible digitalis effect Abnormal ECG. how likely is it that ive had a heart attack in the past with normal ekg now. WebHypokalemia potentiates the effects of digitalis owing to impaired Na +-K + pump function. Digoxin effect refers to the presence on the ECG of: Downsloping ST depression with a characteristic reverse tick or Salvador Dali sagging appearance Flattened, inverted, or biphasic T waves Shortened QT interval Digoxin effect: Sagging ST segments resemble a reverse tick Other Digoxin effect features Additional ECG Features Learn what happens before, during and after a heart attack occurs. I have been told by other docs to not worry, that these new ECG machine give false readings, but, I am a worrier, and I worry all the time. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. #mc_embed_signup { Horizontal or downsloping ST depression 0.5 mm at the J-point in 2 contiguous leads indicates myocardial ischaemia (, Upsloping ST depression in the precordial leads with prominent. Posterior MI manifests as horizontal ST depression in V1-3 and is associated with upright T waves and tall R waves. WebThe Dig effect does not mean that you have a problem!! Ecg read says normal sinus rhythm, nonspecific T wave abnormality, Abnormal ECG but doctor says its normal? its discordant in extremity leads or negative in chest leads. my st segment looked lowered. If you are using Internet Explorer 6 or earlier, we recommend you update your browser to Intenet Explorer 8+ or try a compliant browser such as Webst abnormality possible digitalis effectsour milk bread recipes no yeastsour milk bread recipes no yeast Twitter: @rob_buttner. The corresponding ST elevation may be subtle and difficult to see, but should be sought. Get answers from Cardiologists and top U.S. doctors, Our doctors evaluate, diagnose, prescribe, order lab tests, and recommend follow-up care. WebMost electrolyte and endocrinologic abnormalities can affect the heart rate and ST-segment and T-wave changes on a resting ECG, and they may affect the patient's ability to exercise as well. } Thank you. The most important cause of ST segment abnormality (elevation or depression) is myocardial ischaemia or infarction. Top answers from doctors based on your search: Created for people with ongoing healthcare needs but benefits everyone. Firefox or Google Chrome. The ECG features of digoxin effect are seen with therapeutic doses of digoxin and are due to: Remember, the presence of digoxin effect on the ECG is not a marker of digoxin toxicity. What is your age and sex? There is ST elevation in the posterior leads V7-9. WebThere are many causes of that only one of which is digitalis which obviously isn't it if you've never taken that medication. ECG reads Normal sinus rhythm, T wave abnormality, consider inferior ischemia abnormal ecg. width: auto; Mine came back (the event monitor) saying I was having sinus tachycardia up to 150 bpm all the time. what does this mean and is it serious? It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. In other words, as long as they have done tests to make sure you have no blockages and no part of your heart is ischemic (not getting enough oxygen)then it is likely nothing to be concerned about. Necessary cookies are absolutely essential for the website to function properly. If you have a question regarding your condition or situation please start a thread for the information you seeking. The way in which I would describe ST-T wave appearance in this ECG is that there are, diffuse, nonspecific ST-T wave abnormalities with (as per Dr. Smith) ST segment scooping with a short QTc, that is most prominent in the lateral chest leads. border: none; is this concerning? There is ST elevation and partial RBBB in V1-2 with a coved morphology the Brugada sign. The ST segment may be either elevated or depressed. Thank you. General Introduction to ST-T and U Wave Abnormalities, Intrinsic myocardial disease (e.g., myocarditis, ischemia, infarction, infiltrative or myopathic processes), Drugs (e.g., digoxin, quinidine, tricyclics, and many others), Electrolyte abnormalities of potassium, magnesium, calcium, Neurogenic factors (e.g., stroke, hemorrhage, trauma, tumor, etc. Prolonged qt when compared with ecg of jan 12 2022 17:20,. WebEkg says abnormal ekg, st abnormality, possible digitalis effect. My ECG showed ST abnormalities- possible digitalis effect. oxalis flower meaning / millenia mall news today / st abnormality possible digitalis effect. Low serum K + concentrations increase the binding of digitalis to myocardium. font: 14px Helvetica, Arial, sans-serif; These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Cardiac stress testing is useful in the risk stratification of chest pain; noting that 1539% of angiograms performed 79. what does this mean and is it serious? It is often most prominent in the left precordial leads V4-6 plus leads I, II and aVL. Whats this mean? The way in which I would describe ST-T wave appearance in this ECG is that there are, diffuse, nonspecific ST-T wave abnormalities with (as per Dr. Smith) ST segment scooping with a short QTc, that is most prominent in the lateral chest leads. However, unlike acute STEMI the May see PR segment depression, a manifestation of atrial injury, Left ventricular hypertrophy (in right precordial leads with large S-waves), Left bundle branch block (in right precordial leads with large S-waves), Hypothermia (prominent J-waves or Osborne waves), Pseudo-ST-depression (wandering baseline due to poor skin-electrode contact), Physiologic J-junctional depression with sinus tachycardia (most likely due to atrial repolarization), Hyperventilation-induced ST segment depression, Subendocardial ischemia (exercise induced or during angina attack - as illustrated below), ST segment depression is often characterized as "horizontal", "upsloping", or "downsloping", Reciprocal changes in acute Q-wave MI (e.g., ST depression in leads I & aVL with acute inferior MI), RVH (right precordial leads) or LVH (left precordial leads, I, aVL), Secondary ST segment changes with IV conduction abnormalities (e.g., RBBB, LBBB, WPW, etc). Three subjects (6%) had ST depression that was detected on the ambulatory recording only at times other than during the stress test. The EKG results are upsetting Vent rate 80 normal sinus rhythm Pr interval 116ms right atrial enlargement Qrs duration 88 ms minimal voltage requirement for LVH, may be normal variant Qt/qtc 336/387ms st abnormality, possible digitalis effect prt 76. Based on a work athttps://litfl.com. Share this conversation. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Hypokalemia: serum potassium levels below 3 mEq/L causes progressive depression of the ST-segment, a decrease in T wave amplitude, and an increase in U wave amplitude Answered in 5 minutes by: 9/24/2021. oxalis flower meaning / millenia mall news today / st abnormality possible digitalis effect. Necessary cookies are absolutely essential for the website to function properly. I have St segment depression on EKGs and it is considered a normal variant since I have had a nuclear stress test that shows that I have no ischemia. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. } I have heart palpitations. Your thoughts are greatly appreciated. A US doctor answered Learn more Common reading: "abnormal" because there are non-specific changes which are not specific enough to meet a true diagnosis, but not normal enough to say normal, so somewhat of a soft call or indecisive read, but very common and does not necessarily mean anything. I am filled with anxiety over this. The EKG results are upsetting Vent rate 80 normal sinus rhythm Pr interval 116ms right atrial enlargement Qrs duration 88 ms minimal voltage requirement for LVH, may be normal variant Qt/qtc 336/387ms st abnormality, possible digitalis effect prt 76. WebMost electrolyte and endocrinologic abnormalities can affect the heart rate and ST-segment and T-wave changes on a resting ECG, and they may affect the patient's ability to exercise as well. Long story short I've a healthy heart, never had a heart attack in the past etc etc. short pr. If anyone else in this group is dealing with After a few long episodes of Afib in a row my cardiologist put me on daily Bisoprolol in April. Atrial Fibulation from cancer treatment not standard Afib. These cookies do not store any personal information. 3 years ago I had a normal echo. It is associated with extensive myocardial damage and paradoxical movement of the left ventricular wall during systole. The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. Web73 year old male patient monitored during angioplasty of right external iliac artery. The EKG results are upsetting Vent rate 80 normal sinus rhythm Pr interval 116ms right atrial enlargement Qrs duration 88 ms minimal voltage requirement for LVH, may be normal variant Qt/qtc 336/387ms st abnormality, possible digitalis effect prt 76. Press question mark to learn the rest of the keyboard shortcuts margin-right: 10px; The normal T-wave is: Concordant in extremity leads; Positive in chest leads; The main abnormality of the T-wave is that it is inverted, i.e. All the Cardiologist had to say was "I figured you didn't have a heart attack but since the EKG stated you had one I had to run all this tests to be sure, these damn computerized things". The numbers are measurements of time intervals of various cardiac events displayed on the "Inferior ischemia with S-T segment abnormality" represents lack of oxygen getting to the heart muscle. 3 years ago I had a normal echo. Ischemia affects the plateau phase (phase 2) and the rapid repolarization phase (phase 3), which is why ischemia causes changes to the ST segment and T-wave (ST-T changes). If you have frequent or prolonged ventricular premature complexes, this may reduce your hearts ability to pump blood efficiently. I had horrible side effects, went back in, explained to her that I was exercising sometimes when I called the events in and she said "well it is typed right here 'sinus tachycardia' so yes, you have that", then she sent me to a specialist today (a cardiologist specializing in EP stuff) who looked over it, interviewed me, took some more EKG samples from me, asked me about the times I called events in, and told me nothing looked abnormal at all. Ecg shows a nonspecdific st abnormality, normal sinus rhythm, abnormal ecg. I don't need that. The surgeon didn't recommend seeing a cardiologist before surgery and I'm concerned. Call your doctor or 911 if you think you may have a medical emergency. WebFactors affecting the ST-T and U wave configuration include: Intrinsic myocardial disease (e.g., myocarditis, ischemia, infarction, infiltrative or myopathic processes) Drugs (e.g., digoxin, quinidine, tricyclics, and many others) Electrolyte abnormalities of potassium, magnesium, calcium. Normal sinus rhythm Nonspecific T wave abnormality Abnormal ECG When compared with ECG of 05-JUN-2021 20:27, No significant change was found. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. short pr. Anyone else had weight gain with Bisoprolol. I really don't know. Basic Concept: the specificity of ST-T and U wave abnormalities is provided more by the clinical circumstances Online Marketing For Your Business st abnormality possible digitalis effect A US doctor answered Learn more Common reading: "abnormal" because there are non-specific changes which are not specific enough to meet a true diagnosis, but not normal enough to say normal, so somewhat of a soft call or indecisive read, but very common and does not necessarily mean anything. The possibility of any problem may be due digitalis which is a powerful cardiac stimulant. I was going through some old personal papers recently and came across this ER discharge sheet going back to 2011 when I was officially diagnosed with afib - the sheet included a couple of ECG printouts, a chadsvasc 0 score and the and in a It is a NORMAL finding in someone on that drug. font: 14px Helvetica, Arial, sans-serif; We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. ST segment elevation and Q-wave formation in contiguous leads. The normal T-wave is: Concordant in extremity leads; Positive in chest leads; The main abnormality of the T-wave is that it is inverted, i.e. The transition from ST segment to T-wave is smooth, and not abrupt. Share this conversation. Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. WebThe ST segment depression on the ECG was felt to result from the digoxin effect. Dr. Carisa Hines answered Palliative Care 23 years experience Abnormal EKG: I would discuss findings with your PCP or In addition to my previous comment - also do you know anything about pulmonary hypertension? But it is not giving any problems & will not require any medical or surgical intervention unless there is some severe infection. Do Not Sell or Share My Personal Information. Get the facts in this Missouri Medicine report. Patient has a history of coronary artery and cerebral vascular disease. In case of sale of your personal information, you may opt out by using the link. findings include hyperkalemia, high digoxin levels, bradydysrhythmias, and AV blocks. There is appropriate discordance, with the ST segment and T wave directed opposite to the main vector of the QRS complex. For these, please consult a doctor (virtually or in person). Weblorraine chase suffolk. Cardiac stress testing is useful in the risk stratification of chest pain; noting that 1539% of angiograms performed Digoxin effect refers to the presence on the ECG of: Downsloping ST depression with a characteristic reverse tick or Salvador Dali sagging appearance Flattened, inverted, or biphasic T waves Shortened QT interval Digoxin effect: Sagging ST segments resemble a reverse tick Other Digoxin effect features Additional ECG Features ST identifies the area as lower heart chambers. Patient has a history of coronary artery and cerebral vascular disease. These cookies track visitors across websites and collect information to provide customized ads. Editor-in-chief of the LITFL ECG Library. Digoxin effect refers to the presence on the ECG of: The morphology of the QRS complex / ST segment is variously described as either slurred, sagging or scooped and resembling either a reverse tick, hockey stick or (our personal favourite) Salvador Dalis moustache! Ventricular Rate: 87 Atrial Rate: 87 PR Interval: 142 QRS Duration: 78 QT/QTc: 366/440 ms P-R-T Axis: 26 : 17 : 112 degrees. Show Less. Therefore, digoxin side effects can be avoided by keeping blood levels within the therapeutic level. Low serum K + concentrations increase the binding of digitalis to myocardium. The tell-tale sign on the resting ECG is the Brugada sign ST elevation and partial RBBB in V1-2 with a coved morphology. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. The T-wave may diminish in amplitude (flat T-waves), become negative (T-wave inversion) or This website uses cookies to improve your experience while you navigate through the website. What does this mean? Fish Oil Capsules and Supplementation for Heart Disease: The Benefits and Side Effects. The ECG report indicated that there had been no change since 9/2005 so maybe it's not something that is progressing. It is the responsibility of the clinician providing care for the The ST segment may be either elevated or depressed. WebEkg says abnormal ekg, st abnormality, possible digitalis effect. The changes may be seen in all or most of the leads (diffuse changes), or they may be present contiguous leads, such as the inferior, lateral, or anterior leads. Nonspecific t wave abnormality now evident in inferior leads mean? 79. Didn't find the answer you were looking for? i wouldnt worry bout ur ekg, especially if you were kinda hyped up about it before hand. its discordant in extremity leads or negative in chest leads. This Is a low-fat diet really that heart healthy after all? It can be depressed by ischemia low potassium depressed and rounded in ST abnormality, possible digitalis effect Abnormal ECG To give some perspective on the EKG output: Arrhythmia is a fast and/or irregular heartbeat. Thus, digoxin causes false-positive ST depression detected by ambulatory monitoring. In this example, the ST segment is depressed in a downsloping manner with a gradually increasing depression and more rapid return of the depressed segment to the baseline. By using this Site you agree to the following, By using this Site you agree to the following. Even more than a few doctors get things wrong and there was an interesting paper written a few years ago by a specialist proving this. The T-wave may diminish in amplitude (flat T-waves), become negative (T-wave inversion) or Nonspecific ST abnormality, probably digitalis effect - anyone else encountered this. I do not believe that is correct. Factors affecting the ST-T and U wave configuration include: Intrinsic myocardial disease (e.g., myocarditis, ischemia, infarction, infiltrative or myopathic processes) Drugs (e.g., digoxin, quinidine, tricyclics, and many others) Electrolyte abnormalities of potassium, magnesium, calcium. The site may continue to function, but may not display properly. Thus the term, nonspecific ST-T wave I am sorry, but this site is only supported in an strict HTML compliant browser. Doctors typically provide answers within 24 hours. James D. Nicolantonio, PharmD, urges us to reconsider decades-long dietary guidelines. Web68 causes of T wave, ST segment abnormalities | Learn the Heart - Healio Registered users can save articles, searches, and manage email alerts. Thank you! These st abnormalities are seen in multiple leads. To learn more, please visit our, "abnormal" because there are non-specific changes which are not specific enough to meet a true diagnosis, but not normal enough to say normal, so somewhat of a soft call or indecisive read, but very common and does not necessarily mean anything. By using this Site you agree to the following, By using this Site you agree to the following, ST abnormalities - possible digitalis effect, The Best IOL for 2022 RXSight Light Adjusted Lens, Will refractive surgery such as LASIK keep me out of glasses all my life. Online Marketing For Your Business st abnormality possible digitalis effect WebDigitalis has effects on the ECG, including depression of the PR and sagging of the ST segments, decrease in T-wave amplitude, shortening of the QT interval, Hypomagnesemia reduces the activity of membrane Na + ,K + -ATPase and may increase kaliuresis and cause hypokalemia. Vent 82, pr 134, qrs 80 WebFactors affecting the ST-T and U wave configuration include: Intrinsic myocardial disease (e.g., myocarditis, ischemia, infarction, infiltrative or myopathic processes) Drugs (e.g., digoxin, quinidine, tricyclics, and many others) Electrolyte abnormalities of potassium, magnesium, calcium. Ekg says abnormal ekg, st abnormality, possible digitalis effect. Commonly associated with new ECG changes (ST elevation or T wave inversion) or moderate troponin rise. does not mean that the ECG changes are unimportant! Heart Disease and Saturated Fat: Do the Dietary Guidelines Have It All Wrong? ST depression and T-wave inversion in the lateral leads V5-6. Therefore, digoxin side effects can be avoided by keeping blood levels within the therapeutic level. In this example, the ST segment is depressed in a downsloping manner with a gradually increasing depression and more rapid return of the depressed segment to the baseline. If you are having a lot of anxiety over it, definitely give your doctor a call or go in to discuss it further. I have heart palpitations. There is reciprocal ST depression and PR elevation in leads aVR and V1. Nonspecific ST abnormality, probably digitalis effect - anyone else encountered this. i went to the er which had said a left atrial hypertropthy right ventricular enlargement and normal sinus rythym but the doc said it was fine and my pcp said it was perfect, the only reason it lists some of these other things for me was becuase my heart rate was going at a 120 bpm from a panic attack! #mc-embedded-subscribe-form .mc_fieldset { So last week, when my doctor received this, she called me in and put me on a beta blocker. Ask our community of thousands of members your health questions, and learn from others experiences. There has been no response to vagal stimulation. ST segment deviation (elevation, depression) is measured as the height difference (in millimeters) between the J point and the baseline (the PR segment). what does this mean and is it serious? There are many causes of that only one of which is digitalis which obviously isn't it if you've never taken that medication. Ischemia affects the plateau phase (phase 2) and the rapid repolarization phase (phase 3), which is why ischemia causes changes to the ST segment and T-wave (ST-T changes). width: auto; Three subjects (6%) had ST depression that was detected on the ambulatory recording only at times other than during the stress test. The ST Segment represents the interval between ventricular depolarization and repolarization. Ekg says normal sinus rhythm, nonspecific st abnormality, abnormal ecg, what does this mean?