Explain the events that are occurring in the heart during each phase of an EKG (PQRST) and explain why a person can have an EKG showing a normal rhythm and still be having a heart attack. What distinguishes a heart attack from heart failure? What is the most serious consequence of an ac...
Adrenaline is a hormone produced in high-stress situations. An extremely powerful hormone, too much adrenaline can cause serious...
Is ECG enough to detect heart problems? Electrocardiogram (ECG or EKG) to assess the heart rate and rhythm. This test can oftendetect heart disease, heart attack, an enlarged heart, or abnormal heart rhythms that may cause heart failure. Is myocarditis hard to diagnose? Thoughmyocarditis can b...
Along with an abnormal EKG, being male gender, having history of coronary artery disease (CAD) were both significantly more sensitive than a positive troponin in detecting AMI. Although the utility of troponins in patients with syncope and normal EKGs looking for AMI is limited, a troponin may...
Atrial fibrillation (Afib) and ventricular fibrillation (Vfib) are both a type of abnormal heart rhythm (arrhythmia). Atrial fibrillation is caused by irregular electrical impulses in the atria and ventricular fibrillation is caused by irregular electric
Commotio cordis is a medical condition that happens when your heart suddenly stops beating (known as cardiac arrest). It usually happens due to a serious blow or injury to the chest that causes abnormal electrical activity in the heart. ...
How does the ECG vary and what is occurring during these conditions: junctional rhythm, second-degree heart block, and ventricular fibrillation? ECG: The ECG variation can be represented by the reduced or increased amplitude of T-waves...
For example, with dramatically elevated calcium, abnormal electrical impulses in the heart and arrhythmias (abnormal heart rhythms) can occur. In fact, there is a specific pattern on an electrocardiogram (EKG) associated with high levels of calcium. Because the clinical findings were seen in ...
(AFib) is an abnormal heart rhythm orarrhythmiathat can cause the heart to beat irregularly, and can lead to serious complications such asstrokeandheart failure. Normally, the heart beats in an orderly fashion, starting with the heart’s top chamber (atrium), followed by the heart’s bottom...
(who do not have the disease) will appear to be positive for that test. For that 10%, their "abnormal" findings are a misleadingfalse-positiveresult. When it is necessary to confirm a diagnosis that requires dangerous therapy, a test's specificity is one of the crucial indicators. A ...