An abnormal (i.e., pathologic) Q wave indicates the presence of dead myocardial tissue
Indicate whether the statement is true or false
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An abnormal (i.e., pathologic) Q wave is more than 0.04 seconds in duration or more than one third the height of the following R wave in that lead. Myocardial infarction is one possible cause of abnormal Q waves. In the early hours of infarction, an abnormal Q wave may not have developed to its full width or amplitude. Therefore a single ECG tracing might not identify an abnormal Q wave. In a patient with a suspected myocardial infarction, be sure to look at Q waves closely. Even if the initial ECG tracings do not show Q waves that are more than 0.04 seconds in duration or equal to or more than one third of the amplitude of the QRS complex, pathology must be considered if the Q waves become wider or deeper in each subsequent tracing.
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The nurse is providing care to a patient who has just undergone an electrophysiologic (EP) study. The patient states that she is nervous about "things going wrong" during the procedure. What is the nurse's best response?
A) "This is basically a risk-free procedure." B) "Thousands of patients undergo EP every year." C) "Remember that this is a step that will bring you closer to enjoying good health." D) "The whole team will be monitoring you very closely for the entire procedure."
A 4-year-old girl has acute nasopharyngitis (a common cold). Which of the following measures would you want to teach her parents?
A) Healthy children rarely have more than one cold per year. B) Typically the child will pull her ear when a cold is present. C) A cough that accompanies a cold should rarely be suppressed. D) An antibiotic is prescribed for children under 5 years of age.
Medical asepsis refers to
A. absence of all germs from the environment. B. practices that limit the spread of pathogens. C. barriers that confine pathogens to a single patient room. D. sterilizing instruments that could spread pathogens.
A patient on mechanical ventilation with an endotracheal tube requires suctioning. A closed in-line catheter is in place. Which action by the nurse is appropriate?
a. Use manual ventilation to hyperoxygenate the patient with 100% oxygen via Ambu bag. b. Push the catheter and slide the plastic sleeve back when the patient exhales. c. Push the catheter in until resistance is felt or the patient coughs. d. Apply suction for no longer than 30 seconds as you remove the catheter.