Normal resting heart rates range from 60â100 bpm. Bradycardia is defined as a resting heart rate below 60 bpm. However, heart rates from 50 to 60 bpm are common among healthy people and do not necessarily require special attention.achycardia is a fast heart rate, defined as above 100 bpm at rest. Bradycardia is a slow heart rate, defined as below 60 bpm at rest. During sleep a slow heartbeat with rates around 40â50 BPM is common and is considered normal.
The adrenergic receptors (or adrenoceptors) are a class of G protein-coupled receptors that are targets of the catecholamines, especially norepinephrine (noradrenaline) and epinephrine (adrenaline).
Norepinephrine should be regarded as the first line vasopressor in the treatment of septic shock. Citation: Avni T, Lador A, Lev S, Leibovici L, Paul M, Grossman A (2015) Vasopressors for the Treatment of Septic Shock: Systematic Review and Meta-Analysis. PLoS ONE 10(8): e0129305. doi:10.1371/journal.pone.0129305.