Essentials of Critical Care

Normal heart beats in adults is

• 50 to 60 beats/ min

• 60 to 80 beats/ min

• 80 to 100 beats/ min

• 100 to 120 beats/ min

Vasomotor center consist of:

• Vasoconstrictive area

• Vasodilatory area

• Sensory area

• All of the above

Parasympathetic fibers reach to the heart through:

• Facial nerve

• Vagus nerve

• Glossophyrengeal nerve

• None of above

Sympathetic fibers reach to the heart through

• T1 - T4

• T4 - T8

• T8 - T12

• C1 - C4

Heart rate increase by:

• Pain

• Temperature

• Anxiety

• All of above

P-wave in ECG shows:

• Atrial contraction

• Ventricular contraction

• Both a and b

• None of above

T-wave denotes

• Atrial depolarization

• Atrial repolarization

• Ventrical depolarization

• Ventrical Repolarization

Large square in ECG duration:

• 0.04

• 0.1

• 00.8

• 0.20

In normal ECG there are 3 large square in between two R wave what is the normal heart rate:

• 50

• 100

• 150

• 200

1 small square in ECG equals to:

• 1mm

• 2mm

• 4mm

• 5mm