Which of the following ECG characteristics is usually seen when a patient’s serum potassium level is low? a) U wave The U wave is an ECG waveform characteristic that may reflect Purkinje fiber repolarization. It is usually seen when a patient’s serum potassium level is low. b) T wave The T wave is an ECG characteristic reflecting repolarization of the ventricles. It may become tall or “peaked” if a patient’s serum potassium level is high. c) P wave The P wave is an ECG characteristic reflecting conduction of an electrical impulse through the atria. d) QT interval The QT interval is an ECG characteristic reflecting the time from ventricular depolarization to repolarization.

Which of the following ECG characteristics is usually seen when
a patient’s serum potassium level is low?
a) U wave
The U wave is an ECG waveform characteristic that may reflect
Purkinje fiber repolarization. It is usually seen when a patient’s serum
potassium level is low.
b) T wave
The T wave is an ECG characteristic reflecting repolarization of the
ventricles. It may become tall or “peaked” if a patient’s serum
potassium level is high.
c) P wave
The P wave is an ECG characteristic reflecting conduction of an
electrical impulse through the atria.
d) QT interval
The QT interval is an ECG characteristic reflecting the time from
ventricular depolarization to repolarization.
by

1 Answer

Answer :

a) U wave
The U wave is an ECG waveform characteristic that may reflect
Purkinje fiber repolarization. It is usually seen when a patient’s serum
potassium level is low.
by

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Which of the following factors are associated with increased fluid requirements in the management of patients with burn injury? a) Inhalation injuries Factors associated with increased fluid requirements include inhalation injuries, delayed resuscitation, scald burn injuries, high-voltage electrical injuries, hyperglycemia, alcohol intoxification and chronic diuretic therapy.

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The time interval that a waveform is high (or low) is the ___ of the signal.

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Last Answer : a) hallux valgus. Hallux valgus is commonly referred to as a bunion.

For individuals known to be dying by virtue of age and/or diagnoses, which of the following signs indicate approaching death: a) Increased restlessness As the oxygen supply to the brain decreases, the patient may become restless. b) Increased wakefulness As the body weakens, the patient will sleep more and begin to detach from the environment. c) Increased eating For many patients, refusal of food is an indication that they are ready to die. d) Increased urinary output Based upon decreased intake, urinary output generally decreases in amount and frequency.

Description : For individuals known to be dying by virtue of age and/or diagnoses, which of the following signs indicate approaching death: a) Increased restlessness As the oxygen supply to the ... Increased urinary output Based upon decreased intake, urinary output generally decreases in amount and frequency.

Last Answer : a) Increased restlessness As the oxygen supply to the brain decreases, the patient may become restless.

The nurse recognizes which of the following statements as accurately reflecting a risk factor for breast cancer? a) Mother affected by cancer before 60 years of age Risk for breast cancer increases twofold if first-degree female relatives (sister, mother, or daughter) had breast cancer.

Description : The nurse recognizes which of the following statements as accurately reflecting a risk factor for breast cancer? a) Mother affected by cancer before 60 years of age Risk for breast cancer increases ... in women who consume even one drink daily and doubles among women drinking three drinks daily.

Last Answer : a) Mother affected by cancer before 60 years of age Risk for breast cancer increases twofold if first-degree female relatives (sister, mother, or daughter) had breast cancer.

The most significant feature of the antiarrhythmic action of lignocaine is: A. Suppression of phase-4 depolarization in ventricular ectopic foci B. Prolongation of action potential duration C. Prolongation of effective refractory period D. Depression of membrane responsiveness

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Last Answer : A. Suppression of phase-4 depolarization in ventricular ectopic foci

Assertion `:` During diastole, ventricles receives blood from auricles. Reason `:` During ventricular diastole (stage of rapid inflow) the pressure in

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What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL ? (a) 125 beats per minute (b) 50 beats per minute (c) 75 beats per minute (d) 100 beats per minute

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Last Answer : (d) 100 beats per minute

Through which of the following activities does the patient learn to consciously contract excretory sphincters and control voiding cues? a) Biofeedback Cognitively intact patients who have stress or urge incontinence may gain bladder control through biofeedback. b) Kegel exercises Kegel exercises are pelvic floor exercises that strengthen the pubococcygeus muscle. c) Habit training Habit training is used to try to keep the patient dry by strictly adhering to a toileting schedule and may be successful with stress, urge, or functional incontinence. d) Bladder training Habit training is a type of bladder training.

Description : Through which of the following activities does the patient learn to consciously contract excretory sphincters and control voiding cues? a) Biofeedback Cognitively intact patients who have stress or urge ... functional incontinence. d) Bladder training Habit training is a type of bladder training.

Last Answer : a) Biofeedback Cognitively intact patients who have stress or urge incontinence may gain bladder control through biofeedback.