Related by context. All words. (Click for frequent words.) 46 prescribed statins 44 cholesterol lowering medicines 43 kidney transplant recipients 43 LVADs 43 Caesarean deliveries 43 noncardiac surgery 42 TandemHeart 42 aortic dissections 42 Insulin pumps 42 Drug coated stents 42 coronary blockages 42 implanted pacemakers 42 invasive catheterization 42 pacemakers implanted 42 angiographies 42 MDR tuberculosis 42 glaucoma sufferers 42 implantable cardiac devices 42 ICDs implanted 42 Kidney transplants 42 immunosuppressive therapies 42 implantable cardiac 41 catheterization labs 41 PCIs 41 clot busters 41 VTE prophylaxis 41 cardiologists 41 cath labs 41 prescribed statin 41 Peritoneal dialysis 41 angioplasty procedures 41 CardioQ 40 carotid stent 40 hemodialysis patients 40 coronary artery bypass grafts 40 aneuploidy screening 40 Inspra 40 dialyze 40 resynchronization devices 40 implantations 40 patients 40 slice CT scanners 40 ICD implants 40 carotid stents 40 pacemakers defibrillators 40 ultrasound scanners 40 liver transplant recipients 40 bowel cancers 40 implant stents 39 VADs 39 CT scanners 39 drug eluting coronary stents 39 HCV infections 39 onset atrial fibrillation 39 crossmatch 39 atrial fibrillation ablation 39 HeartMate 39 nocturnal hemodialysis 39 cardiac catheterizations 39 clot busting drugs 39 Cypher stents 39 transplantations 39 Implanted defibrillators 39 fatal arrhythmias 39 stents 39 liver transplants 39 unclog arteries 39 abnormal heartbeats 39 computed tomography CT scanners 39 colonoscopy screenings 39 rhythm abnormalities 39 InSync Sentry 39 laparoscopic surgeries 39 nocturnal dialysis 39 lung resection 38 kidney transplantations 38 aortic valve replacements 38 drug coated stents 38 lung transplants 38 AngelMed Guardian 38 aortic stenosis 38 VentrAssist 38 CPAP machines 38 CABG surgeries 38 nonsurgical treatments 38 bypass grafting 38 bypass surgeries 38 liver transplantation 38 EKG screening 38 Taxus stents 38 peritoneal dialysis 38 Hip replacements 38 LDL apheresis 38 CHDs 38 spine fusions 38 aortic valves 38 anticoagulation therapy 38 cardiac defibrillators 38 biliary stent 38 preventive mastectomies 38 biventricular pacemakers 38 Transplant surgeons 38 ICDs 38 BIOTRONIK Home 37 Heartmate II 37 transcatheter aortic valve implantation 37 kidney transplants 37 ECGs 37 implantable cardioverter defibrillators 37 caesarean births 37 stents pacemakers 37 bariatric surgeries 37 cardiac resynchronization 37 implantable cardioverter defibrillators ICD 37 hepatectomy 37 nonischemic cardiomyopathy 37 Multaq 37 pancreases 37 superbug gene 37 immunosuppressive medications 37 magnetic resonance imagers 37 transplants 37 thoracic aortic aneurysms 37 Malignant tumors 37 TAXUS Liberte stent 37 uncontrolled epilepsy 37 abnormal rhythms 37 angioplasties 37 Thoratec HeartMate II 37 implantable cardioverter defibrillators ICDs 37 coated stents 37 atrial fibrillation 37 percutaneous coronary interventions 37 angiograms 37 slice CT scanner 37 electrocardiograms 37 bypass grafts 37 coronary angiograms 37 MELD score 37 clinical trials 36 transplanted kidneys 36 implantable cardiac defibrillators ICDs 36 sentinel node biopsy 36 medicated stents 36 cardiac surgery 36 underwent bariatric surgery 36 microsurgery techniques 36 aortic aneurysms 36 ofpatients 36 nephrectomies 36 invasive catheter 36 autologous SCT 36 LQTS 36 Colorectal cancer screening 36 pig islets 36 ionization alarms 36 stem cell transplants 36 warfarin therapy 36 defibrillator pacemaker 36 irregular heartbeats 36 undergoing CABG 36 electrocardiographs 36 catheterization laboratories 36 abnormal mammograms 36 undergoing spinal fusion 36 lung transplantations 36 platelet transfusions 36 cardiac resynchronisation therapy 36 stenting procedures 36 ACE inhibitor 36 coronary bypass 36 MRI scans 36 pediatric liver transplants 36 Angioplasties 36 implanted pacemaker 36 spiral CT scan 36 Enlite Sensor 36 Kidney transplantation 36 MTWA testing 36 drug eluting stents 36 transplanted stem cells 36 biventricular pacing 35 ultrasound examinations 35 implantable cardioverter defibrillator ICD 35 implantable devices 35 HeartMate II 35 metastatic lung cancer 35 StatLock 35 CT scans MRIs 35 cardioverter defibrillator 35 echocardiograms 35 rhesus negative 35 implanting pacemaker 35 cardiac resynchronization therapy 35 Immunosuppressive drugs 35 ICD therapy 35 defibrillators 35 transplant recipients 35 embryo transfers 35 peritoneal cancer 35 electrophysiology procedures 35 Cholesterol lowering statin 35 Implantable cardioverter defibrillators 35 bariatric surgeries performed 35 islet transplants 35 catheterization lab 35 abdominal surgeries 35 hepatologists 35 chemotherapeutic regimens 35 Spectranetics laser 35 LifePak 35 CMV infection 35 awaiting kidney transplants 35 Newborn screening 35 breast cancer gene mutations 35 stem cell transplantations 35 implantable defibrillator 35 Implantable Cardioverter Defibrillator ICD 35 arterial blockages 35 domino transplant 35 acute STEMI 35 donor liver transplantation 35 Cardiac resynchronization therapy 35 cardiac catherization 35 preemies 35 antiretroviral ARV treatment 35 pacemaker implantation 35 prostate biopsies 35 ThinkPad notebook computers 35 Novacor 35 heart arrhythmias 35 catherization 35 invasive cervical cancer 35 STEMIs 35 STEMI patients 35 scalpel vasectomy 35 cT3 prostate cancer 35 Hip resurfacing 35 laparoscopic hysterectomy 35 Moyamoya disease 35 Rheos System 35 MTWA 35 colonoscopes 35 caesarean deliveries 35 organ transplants 34 oximeters 34 MRI scanners 34 electrocardiograms ECG 34 catheterization 34 coronary interventions 34 metal mesh tubes 34 Caesarean births 34 CardioWest artificial heart 34 bone marrow transplants 34 LDLT 34 pulmonary artery catheters 34 drug depresses breathing 34 intravascular ultrasound 34 Organ transplants 34 cesarean sections 34 neurostimulators 34 antiretroviral therapy ART 34 sudden cardiac death 34 allogeneic HSCT 34 patients undergoing CABG 34 invasive biopsies 34 cesareans 34 defibrillator implantation 34 Cataract surgery 34 screening colonoscopies 34 vascular surgeries 34 bone marrow stem cell 34 Ventricular Assist Device VAD 34 Xience 34 receiving antiretroviral therapy 34 latent TB infection 34 elective angioplasties 34 corded window coverings 34 pulmonary artery catheterization 34 catheterisation 34 MitraClip 34 revascularization procedures 34 corneal transplantation 34 Biotronik 34 Implantable defibrillators 34 pancreas transplants 34 transfusions 34 curative therapy 34 defibrillators pacemakers 34 balloon sinuplasty 34 gastric bypasses 34 transfusion syndrome 34 orthopedic surgeries 34 ruptured aneurysms 34 retransplantation 34 belatacept 34 electrocardiogram EKG 34 extracorporeal membrane oxygenation ECMO 34 renal transplant 34 CABG surgery 34 implantable pacemaker 34 arrhythmias 34 immunosuppressant medications 34 undergo bariatric surgery 34 latent TB 34 TAXUS Stents 34 cardiac 34 Thermage procedure 34 gallbladders removed 34 Paradigm Veo 34 LVAD 34 fingerprint scanners 34 awaiting organ transplants 34 IVF cycles 34 Nihon Kohden 34 drug coated stent 34 lung transplantation 34 Bairey Merz 34 Cystic fibrosis affects 34 mechanical ventilators 34 clot busting medications 34 lumbar fusions 34 EKGs 34 CardioWest 34 BRCA mutations 34 umbilical cord stem cell 34 bariatric procedures 34 HeartMate XVE 34 arterial stents 34 implanted defibrillators 34 MAPCs 33 organ transplantations 33 colonscopy 33 recurrent miscarriages 33 Knee replacements 33 axillary dissection 33 sinus node disease 33 antiretroviral ARV therapy 33 aprotinin 33 Taxus stent 33 reopen clogged arteries 33 abdominal aortic aneurysms 33 HeartMate II pump 33 undergo spinal fusion 33 heart zapping defibrillators 33 Neoral 33 Rh negative blood 33 IVC filters 33 tonsillectomies 33 cardiac pacemakers 33 Aortic stenosis 33 LIFEPAK 33 transcatheter aortic valve 33 glioblastomas 33 islet transplant 33 cadaver transplants 33 tonsil tissue 33 hysterectomies performed 33 daily insulin injections 33 external defibrillators 33 Ecmo 33 pulse oximeter 33 gastric banding surgery 33 ovary transplants 33 gastric banding 33 HLA markers 33 organ rejection 33 sickle cell disease 33 LATITUDE Patient Management 33 Liver transplants 33 VeriMed 33 herpes infection 33 CT scans 33 cardiac catheterisation 33 Immune suppressing drugs 33 spinal fusion procedures 33 Hib vaccination 33 duodenal switch 33 rhythm disturbances 33 bariatric ambulances 33 autologous transplants 33 cerebrovascular events 33 Sedasys 33 cardiac catheterization labs 33 colonoscopies 33 hepatitis C infection 33 paclitaxel eluting coronary stent 33 neuro stimulation 33 solid organ transplantation 33 amniocentesis 33 mitral valve replacement 33 donated corneas 33 implantable cardiac device 33 Transfusions 33 implantable cardiac defibrillators 33 Hemodialysis 33 immunosuppressant drugs 33 antiretroviral medication 33 diaphragm pacing 33 heart zapping defibrillator 33 gastric bypass surgeries 33 lung lobe 33 MYO VAD 33 elective caesarean sections 33 stents implanted 33 curative therapies 33 APOL1 32 kidney transplantation 32 NovoSeven 32 stent grafts 32 stem cell therapy 32 cerebral angiography 32 Medtronic CareLink Network 32 pulse oximeters 32 spinal fusions 32 coronary stents 32 Vitality AVT 32 cell transplantation 32 pacemakers stents 32 donor corneas 32 coronary intervention 32 neurostimulation devices 32 severe aortic stenosis 32 pancreatectomy 32 defibrillator CRT D 32 MRSA bloodstream infections 32 preoperative chemotherapy 32 caesarean sections 32 plasma transfusions 32 transplantation 32 allogeneic bone marrow 32 bone marrow biopsies 32 cardiac cath lab 32 carotid endarterectomy 32 hip replacements 32 bariatric surgical 32 MADIT II 32 radical prostatectomies 32 HLA typing 32 Impella 32 neurological complications 32 cardiovascular 32 hyperbaric oxygen treatments 32 biventricular pacemaker 32 regulate heartbeats 32 nonsurgical procedures 32 CMV disease 32 hepatorenal syndrome 32 STEMI 32 cardiac stents 32 DaVinci robot 32 chlamydia infections 32 diagnostic angiography 32 nerve stimulators 32 implanted cardiac defibrillators 32 TAH t 32 External defibrillators 32 surgeries 32 transplant ASCT 32 Natrecor 32 angioplasty stents 32 elective angioplasty 32 bone marrow stem cells 32 AneuRx 32 assisted reproductive 32 coronary artery bypass grafting 32 carotid surgery 32 antiretroviral therapy 32 severely immunocompromised 32 spinal fusion surgeries 32 Eon Mini neurostimulator 32 erratic heartbeats 32 pacemakers 32 clot busting medication 32 lung liver pancreas 32 mitral valve repair 32 renal transplants 32 defibrillator implant 32 electrocardiography 32 glucose monitoring 32 interventional catheterization 32 appendectomies 32 angioplasty 32 chronic ITP 32 leukemia aplastic anemia 32 Coronary artery bypass 32 Hematopoietic stem cell 32 liver biopsies 32 Coronary artery bypass graft 32 stem cell transplantation 32 CardioPass 32 shockable rhythms 32 stem cell transplant 32 ICD implantation 32 laparoscopic hysterectomies 32 AutoPulse 32 Welch Allyn Connex 32 Automatic external defibrillators 32 dialyses 32 AbioCor 32 prescribed CRESTOR 32 defibrillators CRT Ds 32 biventricular 32 Chronic myeloid leukemia CML 32 marrow donors 32 cardioverter defibrillators 32 HeartWare HVAD 32 IVF clinics 32 coronary artery revascularization 32 pediatric cardiologists 31 Cardiac Defibrillators 31 pancreatic resection 31 donor kidney transplantation 31 breast biopsies 31 IVF pregnancies 31 artificial joints 31 dialyzed 31 ovulation induction 31 prostatectomies 31 coronary angioplasty 31 HIV infected 31 complex fusions 31 HeartStart 31 Amniocentesis 31 Nellcor OxiMax 31 blocked coronary arteries 31 ECMO 31 Implantable Cardioverter Defibrillator 31 transplant 31 stent 31 radioiodine therapy 31 electrocardiograph 31 Intuitive da Vinci 31 fertility treatments 31 nonsurgical procedure 31 test FOBT 31 kidney dialysis machine 31 Lucentis injections 31 CRT Ds 31 kidney pancreas transplant 31 kidney dialysis 31 CMV seropositive 31 basiliximab 31 stent implants 31 hemodialysis 31 hepatitis B vaccination 31 lower extremity amputations 31 femur fractures 31 Kidney dialysis 31 ARV therapy 31 neurosurgical procedures 31 dialysis 31 invasive procedures 31 automatic cardiac defibrillators 31 HSCT 31 Colleague pumps 31 revascularization procedure 31 hip resurfacing 31 stomach stapling surgeries 31 liver resections 31 undergoing bariatric surgery 31 devices 31 Cochlear implants 31 kidneys transplanted 31 ventricular assist 31 tissue transplants 31 ventricular assist devices 31 CABG procedures 31 thalassemic 31 umbilical cord stem cells 31 thalassemia 31 diagnostic catheterizations 31 minimally invasive interventional 31 coronary bypass surgery 31 gall bladder removals 31 preventive mastectomy 31 lifesaving antiretroviral treatment 31 colectomy 31 related bloodstream infections 31 Donated organs 31 COR Analyzer 31 caesarean delivery 31 robotic prostatectomies 31 ICU beds 31 bone marrow biopsy 31 Medicare enrollee 31 kidney pancreas transplants 31 caths 31 Echocardiograms 31 salpingo oophorectomy 31 carotid endarterectomies 31 digital mammography 31 hepatitis C 31 Bone marrow transplant 31 defibrillator ICD 31 implant defibrillator 31 haematopoietic stem cell 31 VATS lobectomy 31 electrophysiology labs 31 AngioJet 31 cardiac cath labs 31 thoracic surgeries 31 NYHA 31 cath lab 31 propoxyphene 31 fibrillation 31 artificial corneas 31 implantable pacemakers 31 Total Artificial Heart 31 bariatric procedure 31 liver transplantations 31 intravenous catheters 31 blood glucose monitors 31 colon cancer 31 mechanical circulatory 31 extracorporeal membrane oxygenation 30 prophylactic mastectomies 30 biopsies 30 Transplant Recipients 30 liver cancer 30 EnRhythm 30 cardiac telemetry 30 chronic GVHD 30 Renal Registry 30 upper chambers atria 30 ICD shocks 30 vitro fertilization IVF 30 dialyse 30 Coronary Artery Bypass Graft 30 reoperations 30 immuno suppressive drugs 30 lifesaving organ transplants 30 Defibtech AEDs 30 LASIK procedures 30 ECMO machine 30 implanted cardiac 30 LipiScan IVUS 30 tissue grafts 30 Cath Lab 30 Cordis Cypher stent 30 HeartSaver 30 renal disease 30 catheterizations 30 Gastric bypass surgery 30 perioperative mortality 30 islet transplantation 30 abdominal ultrasounds 30 neural prostheses 30 nerve stimulator 30 IVF 30 donor nephrectomy 30 elective procedures 30 reinterventions 30 electrosurgical devices 30 prescribed CPAP 30 antirejection drugs 30 Taxus 30 endovascular procedures 30 implantable cardioverter 30 GlaxoSmithKline Avandia 30 AbioCor artificial heart 30 capnography 30 corneal transplants 30 disposable catheter 30 kidney disease 30 HCV infected 30 hip implants 30 cardiothoracic surgeons 30 performed laparoscopically 30 immunosuppression therapy 30 stem cell engraftment 30 donor kidney transplants 30 Option Ultrasound 30 EKG machines 30 invasive procedure 30 mismatched bone marrow 30 electrocardiogram ECG 30 ECD kidneys 30 surgical procedures 30 da Vinci surgical 30 chronic renal failure 30 bypass surgery 30 elective orthopedic 30 bone marrow registries 30 kidney dialysis machines 30 MRx 30 interventional cardiac 30 artificial hips 30 ectopic pregnancies 30 Automated external defibrillators 30 sleeve gastrectomy 30 cadaveric donors 30 balloon angioplasties 30 immunosuppressant medication 30 echocardiogram 30 cataract surgeries 30 defibrillation leads 30 CONTAK RENEWAL 30 geriatricians 30 cadaver transplant 30 transplant co ordinators 30 ICSI cycles 30 cardiac pacemaker 30 Defibrillators 30 EKG machine 30 Ventricular Assist Devices 30 transplanted islets 30 artificial respirators 30 Thalassaemia 30 da Vinci robotic 30 Hemolung 30 Morbidly obese patients 30 Enteryx 30 cystectomy 30 pancreatic transplantation 30 donor pancreases 30 blood transfusions 30 portable defibrillators 30 immuno suppressant drugs 30 screening colonoscopy 30 Medtronic implantable 30 Guidant implantable 29 kidney dialysis treatments 29 Thermage Fraxel 29 corneal blindness 29 detect HAIs 29 ASR hip 29 births 29 cystic fibrosis sufferers 29 ventricular tachycardia 29 adrenalectomy 29 Abiomed Impella 29 inhospital 29 Access CardioSystems 29 IVF treatments 29 organ transplantation 29 neurostimulation 29 implantable defibrillators 29 undergone radical prostatectomy 29 Gruessner 29 liver grafts 29 postoperative complications 29 islet cell 29 ovary transplant 29 kidneys livers 29 DSAEK 29 ASR XL 29 HeartStart Home 29 NESS L# 29 defibrillator implants 29 surgeons 29 Ventak Prizm 29 Medtronic defibrillator 29 defibrillators implanted 29 antiretroviral drugs 29 gallbladder removal 29 coronary artery bypass 29 liver resection 29 Renal Data 29 cardiac catheterization laboratory 29 underwent CABG 29 Acute renal failure 29 colorectal cancer screenings 29 hepatic resection 29 immunosuppressive drugs 29 esophagectomy 29 MELD scores 29 bariatric surgery 29 pregnancy terminations 29 dengue haemorrhagic fever 29 nasal feeding tube 29 donor liver transplants 29 vitro fertilization IVF cycles 29 hysterectomies 29 liver disease 29 pulse oximetry 29 implantable device 29 HGH Finchem 29 caesarian sections 29 electrophysiology lab 29 ACCULINK 29 bystander CPR 29 laparoscopic colectomy 29 angioplasties stents 29 donor marrow 29 ARV treatment 29 Tzakis 29 Aquilion ONE 29 transplantation HSCT 29 coated coronary stents 29 thalassaemic 29 insulin pumps 29 Blood transfusions 29 Power Infuser 29 Gastric banding 29 cataract surgery 29 endoscopies 29 stomach stapling surgery 29 neurovascular procedures 29 Ventricular Assist Device 29 Myelodysplastic syndromes 29 CRT 29 engineered bladders 29 TKAs 29 implantable cardiac pacemakers 29 thymectomy 29 catheter ablation 29 IVF treatment 29 fecal transplants 29 caesareans 29 pelvic lymphadenectomy 29 da Vinci robot 29 MELD 29 artificial sphincter 29 allogenic 29 implantation 29 automatic external defibrillators 29 pancreas transplant 29 allogeneic transplants 29 orthopedic surgery 28 Cypher stent 28 Propaq MD 28 Clogged arteries cause 28 marrow transplant 28 Européenne Mark 28 AEDs 28 laparoscopic nephrectomy 28 Guidant defibrillators 28 electrode pads 28 kidney pancreas 28 nonsurgical cosmetic procedures 28 heart catheterizations 28 perioperative complications 28 undergone hysterectomy 28 colonoscopy 28 BIOTRONIK 28 ROBOT Rx 28 pleural mesothelioma 28 Nothing Wadden 28 nebulizers 28 radical retropubic prostatectomy 28 Cardiac Resynchronization Therapy 28 laparoscopic procedure 28 chronic hemodialysis 28 ECG 28 grafts 28 threatening arrhythmias 28 transfused 28 Polyheme 28 Celebrex painkiller 28 anti retroviral therapy 28 aortic stent grafts 28 neurosurgical procedure 28 mechanical ventilator 28 cardiac electrophysiology 28 Thoratec 28 coronary bypasses 28 bone marrow transplant 28 transesophageal echocardiography TEE 28 limb lengthening 28 VT VF 28 therapeutic hypothermia 28 deadly irregular heartbeats 28 RBC transfusions 28 LASIK surgeries 28 cochlear implants 28 transplantation HCT 28 artery bypass 28 resections 28 standard immunosuppressive therapies 28 Ventilators 28 Hepatitis C infections 28 AbioCor implants 28 partial nephrectomies 28 vagus nerve stimulator 28 Stents 28 ovarian hyperstimulation 28 platelet transfusion 28 elective surgeries 28 gynecological surgeries 28 clogged carotid arteries 28 Cardiopulmonary Resuscitation 28 undergoing IVF 28 kidney function 28 vascular surgeons 28 organ transplant 28 explanted 28 USRDS 28 laparoscopically assisted 28 Liver transplantation 28 craniectomy 28 kidney failure 28 Lifepak 28 immobilizers 28 lumbar fusion surgery 28 INTERMACS 28 surgical interventions 28 laminectomies 28 Bluhm Cardiovascular Institute 28 hyperbaric treatments 28 small keyhole incisions 28 OPOs 28 heroin overdoses 28 endovascular specialists 28 invasive cardiology 28 invitro fertilization 28 presumed consent 28 HeRO 28 Bariatric surgery 28 Corneal transplants 28 Edwards Lifesciences Corp. 28 inhalers 28 removed laparoscopically 28 hyperbaric therapy 27 awaiting liver transplants 27 MIRT 27 implanted defibrillator 27 implantable cardiac defibrillator 27 hip implant 27 vitro fertilization 27 intravenous chemotherapy 27 devicemaker 27 defibrillation shock 27 ACL reconstructions 27 renal failure 27 radical nephrectomy 27 hysterectomy 27 Isolaz procedures 27 electrical stimulators 27 nephrosis 27 sinus surgeries 27 diabetes pill Avandia 27 transplanted organs 27 bone marrow transplantations 27 bleeding ulcers 27 nephrologists 27 Narayana Hrudayalaya 27 arrythmia 27 ventilators 27 autologous transplant 27 transfusion 27 surrogacies 27 breast cancer recurrences 27 SmartVest ® Airway Clearance 27 marrow transplants 27 unblock arteries 27 anti retroviral treatment 27 implantable cardioverter defibrillator 27 bone marrow donors 27 cardiac defibrillator 27 islet cells 27 uterine cancer 27 abdominal hysterectomies 27 Powerheart 27 renal transplantation 27 vena cava filters 27 inpatient surgeries 27 transplanting organs 27 vasectomy reversals 27 Chest compressions 27 outpatient surgeries 27 carotid artery stents 27 pacemaker ICD 27 liver biopsy 27 sleeve lobectomy 27 laparoscopically 27 defibrilator 27 kidney liver pancreas 27 caesarians 27 vaginal births 27 implantable 27 multi dose vials 27 ruptured brain aneurysms 27 vaginal hysterectomies 27 kidney transplant 27 cardiac stent 27 pancreatic islet cell 27 cataract removal 27 ABO incompatible 27 Guidant Corp. GDT.N 27 NexStent 27 Bone marrow donors 27 Assist Device 27 pancreatic transplants 27 cadaver donor 27 Cardiac Care 27 cleft surgeries 27 stents catheters 27 pacemaker 27 InSpectra StO2 27 chronic kidney 27 rehospitalized 27 Implantable cardioverter defibrillators ICDs 27 Philips HeartStart 27 UPPP 27 LVRS 27 ventricular arrhythmias 27 gall bladder removal 27 spinal fusion