JP6603324B2 - 埋込型心臓モニタリング装置において洞不全症候群を識別するための装置 - Google Patents
埋込型心臓モニタリング装置において洞不全症候群を識別するための装置 Download PDFInfo
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Description
別の実施形態において、本発明は前述の心臓モニタリング装置であって、皮下電極が心臓モニタリング装置の頂部側に配置される。
別の実施形態において、本発明は前述の心臓モニタリング装置であって、第1および第2の皮下電極が心臓モニタリング装置の頂部の近位側と遠位側に配置される。
本明細書に記載の方法は、埋込型医療装置または外部医療装置におけるソフトウェア、ハードウェアまたはファームウェアにおいて具現化され得る。そのような装置の例として心臓EGM/ECGモニタリング能力および関連するEGM/ECG感知電極を有する埋込型モニタリング装置が挙げられ、電極は心臓内電極、心外膜電極、または皮下電極であってもよい。そのような装置は、少なくとも2つの電極、複数の電極、少なくとも複数の電極もしくは2つの電極を有してよい。
AF証拠=不規則性証拠−原初カウント−PAC証拠
によって定義され得、式中、「不規則性証拠」は、ローレンツプロット区域の原点を中心に定義されるゼロセグメント外での占有状態のヒストグラムビンの数を指す。正常洞調律または高度に規則的な心房頻脈の間、連続するRRI間での差が比較的小さく、一貫していることから、ほぼすべてのポイントがゼロセグメントに該当する。したがって、ゼロセグメント外での占有状態ヒストグラムビンの数が多いと、これはAFの肯定的証拠である。
項目1.患者の洞不全症候群状態の発生を判定する方法であって、
心臓信号を感知するステップと、
感知された心臓信号に応じてRR間隔変動セッション中にRR間隔変動性を判定するステップと、
RR間隔変動セッション中のP波の発生の有無を判定するステップと、
P波の発生に応じて洞不全指標に該当するか否かを判定するステップと、
洞不全指標に該当することに応じて洞不全カウントをインクリメントするステップと、
洞不全カウントのインクリメントに応じて洞不全負担に該当するか否かを判定するステップと、
洞不全負担に該当することに応じて洞不全症候群の発生を判定するステップと
を含む、方法。
洞不全カウントに関連する所定の期間の割合を判定するステップと、
所定の期間の割合を洞不全負担閾値と比較するステップと、
比較に応じて洞不全閾値に該当するか否かを判定するステップ
をさらに含む、方法。
RR間隔変動性がRR変動性閾値を超えるか否かを判定するステップと、
RR間隔変動性がRR変動性閾値を超えていないことに応じて正常洞カウントをインクリメントするステップと、
洞不全カウントと正常洞カウントとの比率に応じて洞不全負担に該当するか否かを判定するステップ
をさらに含む、方法。
洞不全カウントに関連する所定の期間の割合を判定するステップと、
所定の期間の割合を洞不全負担閾値と比較するステップと、
比較と洞不全指標に該当することに応じて洞不全閾値に該当するか否かを判定するステップ
をさらに含む、方法。
RR間隔変動性セッションにおける1つのRR間隔に関連する間隔率が間隔率閾値よりも小さいか否かを判定するステップと、
RR間隔変動性セッションにおける1つのRR間隔に関連する間隔率が間隔率閾値よりも小さいことに応じて洞不全指標に該当すると判定するステップ
をさらに含む、方法。
RR間隔変動性セッションにおける所定の数のRR間隔に関連する間隔率が間隔率閾値よりも小さいか否かを判定するステップと、
RR間隔変動性セッションにおける所定の数のRR間隔に関連する間隔率が間隔率閾値よりも小さいことに応じて洞不全指標に該当すると判定するステップ
をさらに含む、方法。
患者指標が既に有効化されているか否かを判定するステップと、
RR間隔変動性セッションにおける1つのRR間隔に関連する間隔率が間隔率閾値よりも小さいか否かを判定するステップと、
RR間隔変動性セッションにおける所定の数のRR間隔に関連する間隔率が間隔率閾値よりも小さいか否かを判定するステップと、
有効化されている患者指標と、RR間隔変動性セッションにおける1つのRR間隔に関連する間隔率およびRR間隔変動性セッションにおける所定の数のRR間隔に関連する間隔率の片方または両方が間隔率閾値よりも小さいことに応じて洞不全指標に該当すると判定するステップ
をさらに含む、方法。
RR間隔変動性がRR変動性閾値を超えるか否かを判定するステップと、
RR間隔変動性がRR変動性閾値を超えていないことに応じて正常洞カウントをインクリメントするステップと、
洞不全カウントと正常洞カウントとの比率に応じて洞不全負担に該当するか否かを判定するステップ
をさらに含む、方法。
[形態1]
患者の洞不全症候群状態の発生を判定するための心臓モニタリング装置であって、
心臓信号を感知する電極と、
感知された心臓信号を受信するための回路機構を内蔵する前記電極に電気的に連結された感知モジュールと、
前記感知モジュールに連結され、前記感知された心臓信号に応じてRR間隔変動セッション中にRR間隔変動性を判定し、前記RR間隔変動セッション中のP波の発生の有無を判定し、P波の発生に応じて洞不全指標に該当するか否かを判定し、前記洞不全指標に該当することに応じて洞不全カウントをインクリメントし、前記洞不全カウントのインクリメントに応じて洞不全負担に該当するか否かを判定し、前記洞不全負担に該当することに応じて洞不全症候群の発生を判定するように構成されたプロセッサーと
を含む、装置。
[形態2]
形態1に記載の心臓モニタリング装置において、前記プロセッサーが、前記洞不全カウントに関連する所定の期間の割合を判定し、前記所定の期間の前記割合を洞不全負担閾値と比較し、前記比較に応じて洞不全閾値に該当するか否かを判定するように構成された、装置。
[形態3]
形態2に記載の心臓モニタリング装置において、前記所定の期間が1日を含み、前記洞不全負担閾値は、前記洞不全カウントが1日当たり50パーセントであることを含む、装置。
[形態4]
形態1から3のいずれか一項に記載の心臓モニタリング装置において、前記プロセッサーが、前記RR間隔変動性がRR変動性閾値を超えるか否かを判定し、前記RR間隔変動性が前記RR変動性閾値を超えていないことに応じて正常洞カウントをインクリメントし、前記洞不全カウントと前記正常洞カウントとの比率に応じて前記洞不全負担に該当するか否かを判定する、装置。
[形態5]
形態1から4のいずれか一項に記載の心臓モニタリング装置において、前記プロセッサーが、前記洞不全カウントに関連する所定の期間の割合を判定し、前記所定の期間の前記割合を洞不全負担閾値と比較し、前記比較と前記洞不全指標に該当することに応じて洞不全閾値に該当するか否かを判定するように構成された、装置。
[形態6]
形態5に記載の心臓モニタリング装置において、前記所定の期間が1日を含み、患者の洞不全指標が該当しない場合は前記洞不全負担閾値が第1の1日当たり割合値を含み、前記患者の洞不全指標が該当する場合は前記洞不全負担閾値が第2の1日当たり割合値を含み、前記第2の割合値が前記第1の割合値よりも小さい、装置。
[形態7]
形態1から6のいずれか一項に記載の心臓モニタリング装置において、前記プロセッサーが、前記RR間隔変動性セッションにおける1つのRR間隔に関連する間隔率が間隔率閾値よりも小さいか否かを判定し、前記RR間隔変動性セッションにおける1つのRR間隔に関連する間隔率が前記間隔率閾値よりも小さいことに応じて前記洞不全指標に該当すると判定するように構成された、装置。
[形態8]
形態1から7のいずれか一項に記載の心臓モニタリング装置において、前記プロセッサーが、前記RR間隔変動性セッションにおける所定の数のRR間隔に関連する間隔率が間隔率閾値よりも小さいか否かを判定し、前記RR間隔変動性セッションにおける前記所定の数のRR間隔に関連する間隔率が前記間隔率閾値よりも小さいことに応じて洞不全指標に該当すると判定するように構成された、装置。
[形態9]
形態1から8のいずれか一項に記載の心臓モニタリング装置において、前記プロセッサーが、患者指標が既に有効化されているか否かを判定し、前記RR間隔変動性セッションにおける1つのRR間隔に関連する間隔率が間隔率閾値よりも小さいか否かを判定し、前記RR間隔変動性セッションにおける所定の数のRR間隔に関連する間隔率が前記間隔率閾値よりも小さいか否かを判定し、前記有効化されている患者指標と、前記RR間隔変動性セッションにおける1つのRR間隔に関連する前記間隔率および前記RR間隔変動性セッションにおける所定の数のRR間隔に関連する間隔率の片方または両方が前記間隔率閾値よりも小さいことに応じて前記洞不全指標に該当すると判定するように構成された、装置。
[形態10]
形態9に記載の心臓モニタリング装置において、前記プロセッサーが、前記RR間隔変動性がRR変動性閾値を超えるか否かを判定し、前記RR間隔変動性が前記RR変動性閾値を超えていないことに応じて正常洞カウントをインクリメントし、前記洞不全カウントと前記正常洞カウントとの比率に応じて前記洞不全負担に該当するか否かを判定する、装置。
[形態11]
形態1から10のいずれか一項に記載の心臓モニタリング装置において、前記心臓モニタリング装置が皮下電極を備える、装置。
[形態12]
形態11に記載の心臓モニタリング装置において、前記皮下電極が前記心臓モニタリング装置の頂部側に配置される、装置。
[形態13]
形態12に記載の心臓モニタリング装置において、前記皮下電極が第1の皮下電極と第2の皮下電極とを含む、装置。
[形態14]
形態13に記載の心臓モニタリング装置において、前記第1および第2の皮下電極が前記心臓モニタリング装置の頂部の近位側と遠位側に配置される、装置。
[形態15]
形態11に記載の心臓モニタリング装置において、少なくとも2つの電極を備えた、装置。
Claims (4)
- 患者の洞不全症候群状態の発生を判定するための心臓モニタリング装置であって、
心臓信号を感知する電極と、
感知された心臓信号を受信するための回路機構を内蔵する前記電極に電気的に連結された感知モジュールと、
前記感知モジュールに連結され、前記感知された心臓信号に応じてRR間隔変動セッション中に所定の時間間隔におけるRR間隔変動がAF検出閾値よりも大きいか否かを判定することによりRR間隔変動性を判定し、前記所定の時間間隔における前記RR間隔変動が前記AF検出閾値よりも大きい場合に、前記RR間隔変動セッション中のP波の発生の有無を判定し、P波の発生に応じて洞不全指標に該当するか否かを判定し、前記洞不全指標に該当することに応じて洞不全カウントをインクリメントし、前記洞不全カウントのインクリメントに応じて、所定の期間における前記洞不全カウントに関連する前記所定の時間間隔が占める割合を判定し、前記割合が洞不全負担閾値を超えることに応じて洞不全症候群の発生を判定するように構成されたプロセッサーと
を含む、装置。 - 請求項1に記載の心臓モニタリング装置において、前記所定の期間が1日を含み、前記洞不全負担閾値は、前記洞不全カウントが1日当たり50パーセントであることを含む、装置。
- 請求項1又は2に記載の心臓モニタリング装置において、前記心臓モニタリング装置が皮下電極を備え、前記皮下電極が第1の皮下電極と第2の皮下電極とを含む、装置。
- 請求項3に記載の心臓モニタリング装置において、前記第1および第2の皮下電極が前記心臓モニタリング装置の頂部の近位側と遠位側に配置される、装置。
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