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- University
- Politecnico di Milano
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- Biomedical Engineering
- Subject
- Bioengineering of Physiological Control Systems
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- Notes · By topic
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Respiratory Sinus Arrhythmia
Study material for Bioengineering of Physiological Control Systems, shared by the Studwiz community and reviewed by moderators.
Bioengineering of Physiological Control SystemsBy topic
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Study material for Bioengineering of Physiological Control Systems, shared by the Studwiz community and reviewed by moderators.
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RESPIRATORYSINUSARRHYTHMIA RSAistheHEARTRATEVARIABILITYinSynchronywithRESPIRA-110N Interactionbetween RESPIRATORYandCARDIAC CentersinMeduna RR- PERIOD HR VAGALACTIVITYSYMPATHETICACTIVITY ESPIRA-110N ' , tACTIVE INHIBIT INSPIRATION a ^ INHIBIT +ACTIVE PHRENICNERVEiswhat triggersRESPIRA-110N: Phrenic PhrenicActivity Innibition ✓ un Mechanisms involvedinRSA feedforwardrespiratoryaction r Medalla RESPIRATORY VAGAL 9 HRCENTERS CENTERS ✓ Ann INTRATHORACICPRESSORE 9LUNGVOLUME(or Pieuralpressore) MANYPATHWAYSINVOLVEDin CARDIOPULMONARYINTERACTION. - ✓ *DirectmodulationfromRESPIRATORYCenterstoVenausReturn gBAINBRIDGEREFLEX CARDIACCenters . BainbridgeresponsetoINCREASEin bloodvolume(TVR)thanksto LOWPRESSORERECEPTORSINRIGHTATRIUMarteriaPressore > BAROREFLEX • BAROREFUEXRESPONSEtotSAP thankstoHIGHPRESSORERECEPTORS intheAORTKARCH RR- LUNGVOLUME EXPERIMENI &RESPIRATORYCENTERS •INPVI: BroadbandRESPIRA-110N, i.e. highlyvariablebreathingrate How?TheyaskedSubjectstobrattiwuentriggeredbyadigitalclick. ThisclickwasperformedaccordingtoaPoissonDistribution ,thatMearnsatRANDOMtimeinteroalsma Randonebreathingnate ! LIMITEDPoissondistribution: at>0anddt«+ao toPhysiologielimitsoftimewithin 2breathingcyclesNottoFAST, mortaRARELY •PROTOCOLSformeasun.mgseparately VAGALACTIVITY: supineposition(RELAXATION)+ symphatheticactivityimhibitiondngs SYMPATHETICACTIVITY: Standing(Active)+ parasymphatheticactivityimhibitiondngs •OBSERVATIONS ! Conclusions previouslyobtainedINVASNELYondogs, areCONFIRMEDbytheObservationofRsa BROADBAND chamgesin LUNGVOLUME BROADBANDSINUSRESPONSE NARROWBANDSINUSRESPONSE SHARPlow- PASSFILTERING MILDLOW- PASSFILTERING STRAIGHTEDCURVES Icutofffrequency IN- PHASE +me . """.. |,+HR= SmollerRR DELAY(=LINEAR) → delay!! ⊥IN- PHASE✓ SINUSFREQUENCYRESPONSE LUNGVOLUMEOranges >…
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