HiHi there. I'm 6'4" tall and approx. 300 lbs. I regularly donate plasma to supplement my income, but lately, more often than not, I have been deferred for 24 hour periods due to my pulse being > 100bpm. In the past, I have been cleared for donation by the nurse at the plasma center, who auscultated my heart rate and noted that I have a regular rate and rhythm. I've also received clearance in the past from my personal physician and a cardiologist, both of whom say I'm okay to donate. This plasma center does not honor that, so I'm wondering: What can I do (besides eating well, not smoking, and avoiding caffeine) to lower my heart rate just while they are checking it in the screening room?
                                                        
                                                     
                                                    
                                                        
                                                            
                                                            
                                                            
                                                                posted on
                                                            
                                                                Fri, 14 Mar 2014 
                                                            
                                                            
                                                            
                                                            
                                                                
                                                                    
                                                                    
                                                                    Tue, 26 May 2015
                                                                    
                                                                    
  Answered on 
                                                                 
                                                                
                                                                    
                                                                    
                                                                    Tue, 26 May 2015
                                                                    
                                                                    
  Last reviewed on