Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
|
Define the Intrinsic heart rate.
|
the heart rate that prevails after complete autonomic blockade, ~100 beats/min
|
|
|
What are Baroreceptors?
|
stretch receptors present in the walls of blood vessels and heart chambers respond to distension due to increased BP.
Acute changes in arterial BP reflexly elicit inverse changes in HR via the baroreceptors in the carotid sinus and aortic arch |
|
|
What percentage of total blood volume is present in the venous capacitance vessels?
|
up to 75% !
|
|
|
What are the risk factors
for development of bradycardia in non-obstetrical population having a spinal? |
1-baseline heart rate (HR) < 60
beats·min–1, 2-ASA I, 3-use of beta blockers, 3-prolonged PR interval on electrocardiogram, 4-and block height >T5 |
|
|
What are the risk factors for hypotension in non-obstetrical
populations having a spinal? |
1-block height > T5,
2-age > 40 yr, 3-baseline systolic blood pressure (SBP) < 120 mmHg, 4-and spinal puncture above L3 / 4. |
