Which is true of a third heart sound (S3)?
A) It marks atrial contraction.
B) It reflects normal compliance of the left ventricle.
C) It is caused by rapid deceleration of blood against the ventricular wall.
D) It is not heard in atrial fibrillation.
C) It is caused by rapid deceleration of blood against the ventricular wall.
The S3 gallop is caused by rapid deceleration of blood against the ventricular wall. S4 is heard with atrial contraction and is absent in atrial fibrillation for this reason. It usually indicates a stiff or thickened left ventricle as in hypertension or left ventricular hypertrophy.
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The patient is experiencing shortness of breath and chest discomfort. On the basis of this information, how would the nurse evaluate the patient's preload status? a. The patient is hypovolemic and has too little preload. b. The patient is experiencing CHF and has too little preload. c. The patient is experiencing heart failure and has too much preload. d. The patient is hypertensive and the preload is not a factor.
The nurse anticipates spermatogenesis will:
A) occur when spermatids stored in the prostate gland are transformed into sperm. B) occur only if the temperature in the testes is 3F higher than body temperature. C) produce sperm that contain 46 chromosomes in 23 pairs. D) begin at puberty under the influence of follicle-stimulating hormone (FSH).
The nurse assumes care of a patient who has myasthenia gravis and notes that a dose of neostigmine (Prostigmin) due 1 hour prior was not given. The nurse will anticipate the patient to exhibit which symptoms?
a. Excessive salivation b. Muscle spasms c. Muscle weakness d. Respiratory paralysis
The microscopic examination of scrapings from the cervix, endocervix, or other mucous membranes to detect premalignant or malignant cells is called:
a. Bimanual palpation. c. A Papanicolaou (Pap) test. b. Rectovaginal palpation. d. A four As procedure.