To properly identify a cardiac rhythm, the nurse will obtain the following factors. (SELECT ALL THAT APPLY)
if there is a QRS complex after each p wave
the rate using only a 3- second strip
the duration of the u waves
if the p waves are present
If the P-P and R-R distances are equal
Correct Answer : A,D,E
A) If there is a QRS complex after each P wave:
This is an important consideration when identifying a cardiac rhythm. The P wave represents atrial depolarization, and the QRS complex represents ventricular depolarization. In a normal sinus rhythm, every P wave is followed by a QRS complex, which confirms that the impulse originating in the SA node is being conducted properly through the atrioventricular (AV) node and into the ventricles. The presence of a QRS after every P wave helps confirm normal conduction and rhythm.
B) The rate using only a 3-second strip:
While the heart rate is an essential part of the rhythm assessment, using only a 3-second strip is not the most accurate method for determining the rate. Typically, a 6-second strip is used to estimate the rate, multiplying the number of R-R intervals by 10 to obtain the heart rate. A 3-second strip can be used for quick estimates but may lead to inaccurate calculations of the heart rate.
C) The duration of the U waves:
The U wave is often a normal variant seen in the ECG and is not always present. If it is visible, its duration is typically not a primary focus in rhythm interpretation unless there are concerns about electrolyte imbalances, such as hypokalemia. The U wave is not a core factor to consider when identifying the overall rhythm.
D) If the P waves are present:
The presence of P waves is important for identifying the rhythm, particularly when differentiating between sinus rhythms (normal) and non-sinus rhythms (such as atrial arrhythmias). In normal sinus rhythm, P waves should be present, reflecting atrial depolarization initiated by the SA node. The absence of P waves can indicate atrial fibrillation, atrial flutter, or other arrhythmias.
E) If the P-P and R-R distances are equal:
This is crucial in identifying a regular rhythm. The P-P interval refers to the distance between successive P waves (atrial depolarization), and the R-R interval refers to the distance between successive R waves (ventricular depolarization). In normal sinus rhythm or regular rhythms, both the P-P and R-R intervals should be equal, indicating that the atrial and ventricular rhythms are consistent. If they are unequal, it suggests an irregular rhythm (e.g., atrial fibrillation).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Includes the head-to-toe anterior and posterior assessment:
While a head-to-toe physical assessment is important in trauma care, it is not the first priority. The primary assessment focuses on immediate life-threatening conditions, and the head-to-toe assessment would come after the initial stabilization of the patient's airway, breathing, circulation, and disability. A comprehensive physical examination is crucial but secondary to addressing urgent life threats.
B) Focuses on the ABCDE's to identify life-threatening problems:
The ABCDE's (Airway, Breathing, Circulation, Disability, Exposure) are the primary framework for assessing and stabilizing a trauma patient. This approach is used to identify and prioritize life-threatening problems. It ensures that the most critical issues, such as airway obstruction, respiratory failure, shock, and neurological deficits, are addressed first. This protocol is the gold standard in trauma care and is the most appropriate initial assessment in major trauma.
C) Includes the use of a standard pain scale and past medical/surgical history:
While it is important to assess pain and gather a medical history in the trauma patient, these are secondary considerations after addressing immediate threats to life. Pain management and obtaining a full history are crucial, but they are not as urgent as addressing airway, breathing, and circulation issues. These should be part of a more detailed secondary assessment once the patient is stable.
D) Consists of analyzing the results of the diagnostic testing:
Diagnostic testing, such as imaging studies and lab work, are important but are not the first priority. The primary assessment should focus on the ABCDE's. Diagnostic results are typically analyzed after the patient is stabilized, as they provide additional information but do not address immediate survival needs.
Correct Answer is A
Explanation
A) Be placed in isolation to prevent radiation exposure to others:
Radioactive iodine (I-131) is commonly used to treat thyroid cancer because it targets and destroys thyroid tissue, including any remaining cancerous cells. This treatment involves the administration of a radioactive substance that can be excreted through saliva, urine, and sweat. To minimize radiation exposure to others, patients are often placed in isolation, particularly in a hospital setting, for a period following administration.
B) Avoid consuming any food or fluids for 24 hours prior to the treatment:
While it’s essential for patients to follow specific instructions regarding food and fluid intake, such as avoiding certain foods or fluids that may interfere with absorption or increase the risk of side effects (like dairy products), the patient does not need to avoid all food and fluids for 24 hours after receiving radioactive iodine.
C) Avoid all physical activity for six weeks after the treatment:
While some precautions, such as avoiding close contact with others for a short period of time, may be necessary, avoiding physical activity for six weeks is not usually required. Patients may be advised to take it easy during the initial recovery phase, but they can typically resume normal activities once the initial isolation period is complete and their radiation exposure is below safety thresholds.
D) Discontinue all other medications for a week before treatment:
However, certain medications that affect thyroid function (such as thyroid hormones or antithyroid medications) may need to be adjusted or stopped before treatment to ensure the effectiveness of the radioactive iodine. The specifics would depend on the patient’s condition and the healthcare provider’s instructions.
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