Cardiology (Literature) Flashcards
- What level does cTnI typically not exceed in:
1. Primary cardiac disease
2. Congestive heart failure
- 1 ng/mL
- 2 ng/ mL
Also: there is a lot of overlap in these concentrations with healthy animals.
How many times more likely are unwell dogs with increased troponin to die?
Up to 4x
What is the target heart rate for AF rate control and what is the impact of survival in dogs with AF in MMVD with CHF?
<160bpm
Controlling the rate below this value improved MST from 61 to 171 days.
https://paperpile.com/app/p/761e7ba5-e91e-0de6-901e-58aefc0cd843
What proportion of dogs with AVB having pacemaker implantation may have a change (progression/regression) of the original rhythm at follow up?
Around 1/3
https://paperpile.com/app/p/2ecf3351-85a9-0b33-bfc2-d6055055e825
What was the OR of Dance CKCS having a murmur following introduction of a breeding program aimed at reducing incidence of cardiac disease?
0.27 (73% reduction in risk).
https://paperpile.com/app/p/1d7af771-a9c1-0d63-9440-c603638fe8a6
What is right ventricular tei index and what is its relevance to MMVD?
RVTX = IVCT+IVRT/Ejection Time
It has been shown to independently predict death from MMVD within a year in one study.
n.b it seems that the higher the index the better the RV function if you think about how the values might change to indicate dysfunction.
https://paperpile.com/app/p/b9660945-e531-0843-82d3-b183aa1a7a8f
What implant has been shown to be suitable for treatment of PDA via. femoral artery catheterisation in small dogs?
Amplatzer vascular plug-4. (AVP-4). This was placed in several dogs with a femoral artery diameter <2mm. A complication that did occur was embolisation of the device.
https://paperpile.com/app/p/fb6361c2-855a-0483-aa61-67767d6e28c4
What survival times have been reported for dogs undergoing stenting for non-haemangiosarcoma heart-base masses that are obstructing the CVC?
5 - 37 months. (3 dogs only)
https://paperpile.com/app/p/b1ddeab1-f832-054e-b81d-73f79afd2aea
What increase in LA:Ao in cats with RCM phenotype was associated with what increase in HR of death?
0.5 increase in LA:Ao associated with 2.5x increased HR of cardiac death
https://paperpile.com/app/p/cc7221b7-273f-012e-a363-265131d35589
What is the usefulness of POC and ELISA testing of NT-proBNP on plasma or pleural effusion for differentiating casues of pleural effusion?
POC or ELISA good on plasma and the ELISA on pleural effusion but POC not so good on pleural effusion (with lower sensitivity).
Good diagnostic accuracy in determining cardiac vs. non-cardiac pleural effusion for ELISA:
- Plasma: Sensitivity 95.2%, specificity 82.4%
- Pleural fluid: Sensitivity 100%, Specificity 76.5%
POC Test:
- Plasma: Sensitivity 95.2% and specificity 87.5%
- Pleural fluid: Sensitivity 100%, specificity 64.7%
Conclusion is that using plasma for the ELISA or POC test is useful but only plasma for the POC test.
https://paperpile.com/app/p/8e5f090e-1907-0780-bcac-cf19d3d47b0a
What echocardiographic measurement may be most useful to obtain in the diagnosis of pulmonary hypertension if a TR velocity cannot be obtained?
right pulmonary artery distensibiliy index (RPAD)
https://paperpile.com/app/p/a781e586-143c-00e8-9e75-4a182ea47b29
Which drugs have been shown to be effective in monotherapy at delaying CHF or sudden death in Irish Wolfhounds with DCM, AF or both?
Pimobendan treated dogs had a longer time to primary endpoint (CHF or SD) which was 1,991 days, compared to methyldigoxin (1,263 days) or benazapril (997 days).
What echocardiographic technique may be most appropriate for assessing cardiac contractlity in dogs with PDA?
Speckle tracking echocardiography
Effects of PDA percutaneous closure on systolic function - what are the echocardiographic manifestations of this.
The effect of closure of PDA on systolic function is that it generally reduces systolic function. Specifically this may manifest as a reduced end-diastoic volume index and fractional shortening. Strain and strain rate are note affected.
Predictors of sudden cardiac death in Doberman’s with DCM and probability od SCD with increase in LVEDV/BSA?
- Left ventricular volume overload as assessed by left ventricular end-diastolic volume indexxed to BWT (LVEDVBSA) was the best variable
- Ventricular tachycardia
- Increased cTnI
- Fastest rate of VPCs >260 bpm
8.5-fold (CI 0.95 = 0.8–35.3) for every 50 mL/m²-unit increment in LVEDV/BSA
What drug may be used to reduce heart rate of cats undergoing echocardiography to help facilitate assessment of diastolic function?
Timolol maleate reduces heart rate by 25bpm on average and seperates e/a waves in 62% of cats that have it administered.
https://paperpile.com/app/p/04aea4f7-34df-0d64-99a9-2b5854020146
In general, what is the relationship between serum leptin and adiponectin in dogs with MMVD?
- Dogs with MMVD have higher leptin and lower adiponecin than healthy dogs
- ISACHC class 3 dogs have higher leptin than class 1 or 2
- ISACHC class 3 dogs had higher adiponectin than dogs with class 1
- ISACHC class 1 dogs had lower adiponectin than healthy controls
What happens to echocardiographic measurements in cats with increasing bodyweight?
They pretty much all increase. However, HR decreases
https://paperpile.com/app/p/e984665f-1312-0aee-98e5-d2fc14f1bd95
What is the relationship between IRIS stages and ACVIM heart failure class?
They are associated. Dogs with CKD and MMVD have a shorter survival time than dogs with MMVD only.
https://paperpile.com/app/p/6e52ec50-7cd5-0b6e-b66e-7515334f85f7
What is the relationship between MYBPC3 A31P mutation in cats and platelet activity?
These cats seem to have a higher platelet activation which can be attenuated with clopidogrel. This study evaluated cats without evidence of HCM which is interesting.
https://paperpile.com/app/p/4a2966b1-fa62-0a72-bb71-fb5ce9a31ab6
What is the relationship between blood pressure and potassium concentrations in cats?
Cats with tiger blood pressure at diagnosis of hypertension seem to have lower potassium concentrations?
https://paperpile.com/app/p/3b92ef10-4bc5-02a4-9969-3af78903a50c
What factors influence the ability of amlodipine to decreased blood pressure in cats?
Blood pressure at diagnosis
Plasma amlodipine concentration
Not bodyweight
https://paperpile.com/app/p/3b92ef10-4bc5-02a4-9969-3af78903a50c
HR for entry to CHF of dogs with MMVD treated with pimobendan compared to untreated
0.64
https://paperpile.com/app/p/d2b5744a-e13a-0e74-a43f-e0e41745b75e
What factors are associated with an increased risk of higher blood pressures in apparently healthy cats? (5 points)
Age
Male
Increased nervousness
Neutering
History of being a stray
What is the association between stages of MMVD and markers of oxidative stress (malondialdehydye, oxidised LDLs and vitamin E)?
None, although these markers were all positively associated with serum cholesterol concentrations
https://paperpile.com/app/p/a834b208-60ea-0ab4-ad6d-51b0fdf98d91
Successfullness of balloon valvuloplasty in dogs with tricuspid stenosis?
- Overall initial success was 75% (3/4 dogs in which procedure was completed
- Procedure completed in 4/5 dogs
- 2/4 dogs had sustained clinical improvement (2/4) but the remainder experience recurrance of clinical signs
https://paperpile.com/app/p/8c7be2fc-ec16-07bb-8e18-4083b2cf9c93
What is the relationship between LA strain measured by speckle tracking echocardiography in dogs with MMVD and disease stage? Which indices best predicts CHF?
LA strain markers lower in dogs with C/D compared to B1/B2. Longitudinal left atrial strain was the best predictor of the presence or history of CHF
https://paperpile.com/app/p/f162e515-8114-0978-8bf6-c27db9eb6ee3
Is NTproBNP useful in distinguishing innocent from pathologic murmurs in young dogs? What disease is this not useful in?
Yes, exept for dogs with pulmonic stenosis.
https://paperpile.com/app/p/7458c46a-6401-041f-ad6c-3d3d7c47a9e4
What phonocardiogram findings may predict an innocent compared to a murmur associated with congenital crdiac disease in young dogs?
Innocent murmurs have a shorter murmur-to-systole ratio and lower murmur-to-systole amplitude on phonocardiography
https://paperpile.com/app/p/7458c46a-6401-041f-ad6c-3d3d7c47a9e4
What is the relationship of RV size and function in cats with HCM?
RV size increased and function decreased in cats with HCM and CHF or pleural effusion. however, only RVFWd increased in cats with subclinical HCM
https://paperpile.com/app/p/a4c01b0f-aeb5-0e1a-af6f-0d5e2e19d618
Relationship of proBNP for cats with CHF and survival
Greater percentage decrease in NT-proBNP associated with longer survival.
https://paperpile.com/app/p/f4f9616c-1705-0e7d-af2f-3aa07856472e
What tye of shunting is expected in older dogs with a PDDA?
Left to right
https://paperpile.com/app/p/0f3f9529-07bc-0988-8b8f-74c7ef5dd3fb
Sensitivity, specificity, PPV and NPV of lung ultrasound for detection of pulmonary oedema in dogs with MMVD.
- Lung ultrasound predicted pulmonary oedema with a sensitivirty of 90% and specificity of 93%
- PPV 85.7% and NPV 95.2%
https://paperpile.com/app/p/55aeaf05-3935-0159-a527-ef77386a752a
Sensitivity and specificity of POC proBNP ELISA on serum of cats for differentiation of cardiac disease vs. non-cardiac disease
-Sensitivity of POC ELISA 65.4% and specificity of 100% for diffentiation of cats with cardiac disease vs. those without
Effect of MR severityt and LVIDSn in predicting cardiac death in CKCS
- Increased MR in male dogs predicted cardiac death but the same was found in females
- LVIDSn increases also predictive of HR of cardiac death
https://paperpile.com/app/p/e2dea591-80f5-0f77-902a-bf17953f0ab2
Risk reduction of torasemide in MMVD in reaching end point of cardiac death
2 fold reduction
https://paperpile.com/app/p/d60d7fbd-1052-0fd6-ab26-bbabb3441e71